Lexmark International, Inc.

United States of America

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G03G 15/08 - Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer 305
G03G 15/00 - Apparatus for electrographic processes using a charge pattern 212
G03G 21/16 - Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements 167
G03G 21/18 - Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements using a processing cartridge 129
G03G 15/20 - Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat 107
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1.

Printer

      
Application Number 29771818
Grant Number D1029930
Status In Force
Filing Date 2021-02-25
First Publication Date 2024-06-04
Grant Date 2024-06-04
Owner LEXMARK INTERNATIONAL, INC. (USA)
Inventor
  • Schoedinger, Kevin Dean
  • Triplett, Edward Lynn
  • Navarrete, Neilson Gutay

2.

Methods and Systems for Determining the Authenticity of a Component

      
Application Number 18102539
Status Pending
Filing Date 2023-01-27
First Publication Date 2024-05-02
Owner Lexmark International, Inc. (USA)
Inventor
  • Davidson, Samuel
  • Ellis, James Howard
  • Fister, Zachary Nathan
  • Rademacher, Timothy John
  • Williams, Jennifer Topmiller

Abstract

An imaging device comprising a controller, a prover supply item and a verifier supply item, where the imaging device is configured to authenticate the prover supply item by: sending a challenge response from the prover supply item to the verifier supply item, and determining a status of the challenge response. When the verifier supply item determines that the received challenge response is a correct output of an algorithm when challenge data is input to the algorithm, the status is determined as verified. A supply item configured to be operable as a prover supply item when installed in an imaging device. The prover supply item is configured to receive an indication of an algorithm to be performed and receive challenge data, perform the algorithm using the challenge data as input to determine a challenge response, and send the challenge response to a verifier supply item.

IPC Classes  ?

3.

Methods and Systems for Determining the Authenticity of a Component

      
Application Number 18102516
Status Pending
Filing Date 2023-01-27
First Publication Date 2024-05-02
Owner Lexmark International, Inc. (USA)
Inventor
  • Davidson, Samuel
  • Ellis, James Howard
  • Fister, Zachary Nathan
  • Rademacher, Timothy John
  • Williams, Jennifer Topmiller

Abstract

A method of authenticating a supply item in an imaging device, wherein the supply item is designated as a prover supply item, and a second supply item installed in the imaging device is designated as a verifier supply item. The method comprises: receiving a challenge response from the prover supply item and determining a status of the challenge response. When the verifier supply item determines that the received challenge response is a correct output of an algorithm when challenge data is input to the algorithm, the status is determined as verified. The verifier supply item is disclosed, configured to receive a challenge response from a prover supply item installed in the imaging device, and determine a status of the challenge response. When the verifier supply item determines that the received challenge response is a correct output of an algorithm, the status is determined as verified.

IPC Classes  ?

  • G06F 21/73 - Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure computing or processing of information by creating or determining hardware identification, e.g. serial numbers
  • H04N 1/44 - Secrecy systems

4.

Methods and Systems for Determining the Authenticity of a Component

      
Application Number 18102530
Status Pending
Filing Date 2023-01-27
First Publication Date 2024-05-02
Owner Lexmark International, Inc. (USA)
Inventor
  • Davidson, Samuel
  • Ellis, James Howard
  • Fister, Zachary Nathan
  • Rademacher, Timothy John
  • Williams, Jennifer Topmiller

Abstract

A method of determining trust in a supply item in an imaging device for verifying other supply items installed in the imaging device via an algorithm, wherein the imaging device has a plurality of installed supply items. The method comprises: sending challenge data and an indication of the algorithm to a candidate supply item, receiving a challenge response from the candidate supply item, and determining, by the controller, a status of the challenge response, the status being verified or unverified. When the controller determines that the received challenge response is a correct output of the algorithm when the challenge data is input to the algorithm, the status is determined as verified. Further, an imaging device configured to determine trust in a supply item installed in the imaging device for verifying other supply items installed in the imaging device via an algorithm.

IPC Classes  ?

  • G06F 21/44 - Program or device authentication
  • H04N 1/00 - PICTORIAL COMMUNICATION, e.g. TELEVISION - Details thereof

5.

HAIR IRON HAVING A CERAMIC HEATER

      
Application Number 18401932
Status Pending
Filing Date 2024-01-02
First Publication Date 2024-04-25
Owner LEXMARK INTERNATIONAL, INC. (USA)
Inventor
  • Bayerle, Peter Alden
  • Lucas, Russell Edward
  • Smith, Jerry Wayne

Abstract

A hair iron according to one example embodiment includes a first arm and a second arm movable relative to each other between an open position and a closed position. A contact surface is positioned on an exterior of the first arm for contacting hair during use. The hair iron includes a heater having a ceramic substrate and an electrical resistor material thick film printed on a surface of the ceramic substrate. The heater generates heat by applying an electric current to the electrical resistor material. The heater is positioned to supply heat to the contact surface.

IPC Classes  ?

  • A45D 1/04 - Curling-tongs, i.e. tongs for use when hot; Curling-irons, i.e. irons for use when hot; Accessories therefor with means for internal heating, e.g. by liquid fuel by electricity
  • A45D 1/06 - Curling-tongs, i.e. tongs for use when hot; Curling-irons, i.e. irons for use when hot; Accessories therefor with two or more jaws

6.

Tray Insertion Velocity Limiting Mechanism

      
Application Number 17962117
Status Pending
Filing Date 2022-10-07
First Publication Date 2024-04-11
Owner LEXMARK INTERNATIONAL, INC. (USA)
Inventor
  • Ransom, Patrick Lawrence
  • Reynolds, Brandon Christopher

Abstract

When a media tray is inserted into a printer with the leading edge of the printed page going into the printer first, multiple sheets of media may slide off the media stack (“shingle”) into the paper path if the primary input tray is inserted too aggressively. This may result in double feeds and/or paper jams for the user. Disclosed is a mechanism that is transparent to the user for slow speed tray insertions but provides force feedback to the user indicating tray insertion at too high of speed. If the user inserts the tray below the speed threshold, then the result is a normal tray insertion. If the user inserts the paper tray above the speed threshold, then there is a feedback to the user to slow the tray insertion to an acceptable velocity.

IPC Classes  ?

  • B65H 1/26 - Supports or magazines for piles from which articles are to be separated with auxiliary supports to facilitate introduction or renewal of the pile

7.

Cleaner assembly with fabric seal for removing waste toner within an image forming device

      
Application Number 18095584
Grant Number 11947303
Status In Force
Filing Date 2023-01-11
First Publication Date 2024-04-02
Grant Date 2024-04-02
Owner Lexmark International, Inc. (USA)
Inventor Goin, Richard Louis

Abstract

A cleaner assembly includes a cleaner blade having a cleaning edge in contact with a photoconductive drum for removing toner therefrom. An elongated seal extends along a length of the cleaner blade such that an opening for capturing toner removed from the photoconductive drum is formed between the cleaning edge and the elongated seal. The elongated seal includes a tab projecting across a longitudinal end section of the cleaner blade such that the tab is positioned between the cleaning edge and the photoconductive drum preventing contact between the cleaning edge and the photoconductive drum. A fabric seal is positioned in a portion of the opening formed between the cleaning edge and the elongated seal at the longitudinal end section of the cleaner blade. At least a portion of the fabric seal is positioned inboard of the tab of the elongated seal along the length of the cleaner blade.

IPC Classes  ?

  • G03G 21/00 - Arrangements not provided for by groups , e.g. cleaning, elimination of residual charge

8.

TONER CONTAINER HANDLE

      
Application Number 17961093
Status Pending
Filing Date 2022-10-06
First Publication Date 2024-03-21
Owner LEXMARK INTERNATIONAL, INC. (USA)
Inventor
  • Adams, Emily Stefano
  • Boettcher, Brian Lester
  • Ransom, Patrick Lawrence

Abstract

A toner container according to one example embodiment includes a pivotable handle. The handle includes a front segment extending along a front of a body of the toner container when the handle is in a first position for contacting a corresponding pry surface in an image forming device when the handle moves from the first position to a second position. The handle includes a rear segment extending along a rear of the body when the handle is in the first position permitting a user to actuate the rear segment to move the handle from the first position to the second position. The handle includes a first side segment extending along the first side of the body and a second side segment extending along the second side of the body. The first and second side segments connect the front segment and the rear segment.

IPC Classes  ?

  • G03G 15/08 - Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer

9.

METHODS FOR RESTRICTING READ ACCESS TO SUPPLY CHIPS

      
Application Number 18519587
Status Pending
Filing Date 2023-11-27
First Publication Date 2024-03-21
Owner Lexmark International, Inc. (USA)
Inventor
  • Bush, Stephen Porter
  • Williams, Jennifer Topmiller

Abstract

An example method for restricting read access to content in the component circuitry and securing data in the supply item is disclosed. The method identifies the status of a read command, and depending upon whether the status disabled or enabled, either blocks the accessing of encrypted data stored in the supply chip or allows the accessing of the encrypted data stored in the supply chip.

IPC Classes  ?

  • G06F 3/06 - Digital input from, or digital output to, record carriers
  • G06F 11/07 - Responding to the occurrence of a fault, e.g. fault tolerance
  • G06F 21/62 - Protecting access to data via a platform, e.g. using keys or access control rules
  • G06F 21/71 - Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure computing or processing of information
  • G11C 29/14 - Implementation of control logic, e.g. test mode decoders

10.

TONER CONTAINER HAVING AN ANGLED ELECTRICAL CONNECTOR

      
Application Number 18381762
Status Pending
Filing Date 2023-10-19
First Publication Date 2024-02-29
Owner LEXMARK INTERNATIONAL, INC. (USA)
Inventor
  • Adams, Emily Stefano
  • Boettcher, Brian Lester
  • Merrifield, David Lee

Abstract

A toner container according to one example embodiment includes a plurality of electrical contacts for contacting corresponding electrical contacts in an image forming device when the toner container is installed in the image forming device. The electrical contacts of the toner container are accessible from below at the bottom of the body by the corresponding electrical contacts in the image forming device when the toner container is installed in the image forming device. The electrical contacts of the toner container are spaced from each other along a horizontal dimension that is orthogonal to a vertical dimension of the toner container. A nominal position of the horizontal dimension along which the electrical contacts are spaced from each other is angled relative to a front-to-rear dimension of the toner container and a side-to-side dimension of the toner container.

IPC Classes  ?

  • G03G 15/08 - Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
  • G03G 15/00 - Apparatus for electrographic processes using a charge pattern
  • G03G 21/16 - Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements

11.

TONER CONTAINERS HAVING ELECTRICAL CONNECTORS OF DIFFERENT POSITIONS

      
Application Number 17894595
Status Pending
Filing Date 2022-08-24
First Publication Date 2024-02-29
Owner LEXMARK INTERNATIONAL, INC. (USA)
Inventor
  • Adams, Emily Stefano
  • Boettcher, Brian Lester
  • Merrifield, David Lee

Abstract

A toner container for use in an image forming device according to one example embodiment includes a body having a reservoir for holding toner. The toner container includes an electrical connector having an electrical contact for contacting a corresponding electrical contact in the image forming device when the toner container is installed in the image forming device. The electrical connector is positioned in one of a plurality of predetermined positions relative to the body corresponding to at least one of a toner color and a toner type of the toner container for limiting installation of the toner container to one of a plurality of toner container receptacles in the image forming device corresponding to at least one of the toner color and the toner type of the toner container.

IPC Classes  ?

  • G03G 21/16 - Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
  • G03G 15/01 - Apparatus for electrographic processes using a charge pattern for producing multicoloured copies
  • G03G 15/08 - Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer

12.

TONER CONTAINERS HAVING ELECTRICAL CONNECTORS IN DIFFERENT ORIENTATIONS AND TONER CONTAINER RECEPTACLES HAVING CORRESPONDING ELECTRICAL CONNECTORS WITH CORRESPONDING POSITIONS

      
Application Number 17894612
Status Pending
Filing Date 2022-08-24
First Publication Date 2024-02-29
Owner LEXMARK INTERNATIONAL, INC. (USA)
Inventor
  • Boettcher, Brian Lester
  • Merrifield, David Lee

Abstract

A system for use in an image forming device according to one example embodiment includes a plurality of toner containers having substantially the same construction. Each of the plurality of toner containers includes a respective first electrical connector having a first electrical contact. Each first electrical connector of the plurality of toner containers is positioned in a different orientation relative to the other first electrical connectors of the plurality of toner containers. A plurality of toner container receptacles are each configured to receive a corresponding toner container. Each of the plurality of toner container receptacles includes a respective second electrical connector having a second electrical contact. The second electrical connector of each of the plurality of toner container receptacles is oriented to mate with a corresponding first electrical connector of one of the plurality of toner containers for establishing an electrical connection between the respective first and second electrical contacts.

IPC Classes  ?

  • G03G 15/08 - Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
  • G03G 15/00 - Apparatus for electrographic processes using a charge pattern

13.

AUTHENTICATION USING MAGNETIC FIELD BASED ON CURRENT DRAWN BY SECURITY DEVICE

      
Application Number 17863745
Status Pending
Filing Date 2022-07-13
First Publication Date 2023-12-21
Owner LEXMARK INTERNATIONAL, INC. (USA)
Inventor
  • Ellis, Jr., James Howard
  • Rademacher, Timothy John

Abstract

Systems and methods for determining authenticity of a security device of a component in an imaging device includes receiving, by the security device, an authentication challenge including one or more commands and executing, by the security device, the one or more commands in response to receiving the authentication challenge. A magnetic field profile is generated based on current drawn by the security device from a power source while the security device is executing the one or more commands, the generated magnetic field profile indicating an authentication response of the security device to the authentication challenge for use in determining authenticity of the security device.

IPC Classes  ?

14.

AUTHENTICATION USING MAGNETIC FIELD BASED ON CURRENT DRAWN BY SECURITY DEVICE

      
Application Number 17866962
Status Pending
Filing Date 2022-07-18
First Publication Date 2023-12-21
Owner LEXMARK INTERNATIONAL, INC. (USA)
Inventor
  • Ellis, Jr., James Howard
  • Rademacher, Timothy John

Abstract

Systems and methods for determining authenticity of a security device of a component in an imaging device includes receiving, by the security device, an authentication challenge including one or more commands and executing, by the security device, the one or more commands in response to receiving the authentication challenge. A magnetic field profile is generated based on current drawn by the security device from a power source while the security device is executing the one or more commands, the generated magnetic field profile indicating an authentication response of the security device to the authentication challenge for use in determining authenticity of the security device.

IPC Classes  ?

15.

AUTHENTICATION USING MAGNETIC FIELD BASED ON CURRENT DRAWN BY SECURITY DEVICE

      
Application Number 17861850
Status Pending
Filing Date 2022-07-11
First Publication Date 2023-12-21
Owner LEXMARK INTERNATIONAL, INC. (USA)
Inventor
  • Ellis, Jr., James Howard
  • Rademacher, Timothy John

Abstract

Systems and methods for determining authenticity of a security device of a component in an imaging device includes receiving, by the security device, an authentication challenge including one or more commands and executing, by the security device, the one or more commands in response to receiving the authentication challenge. A magnetic field profile is generated based on current drawn by the security device from a power source while the security device is executing the one or more commands, the generated magnetic field profile indicating an authentication response of the security device to the authentication challenge for use in determining authenticity of the security device.

IPC Classes  ?

16.

AUTHENTICATION USING MAGNETIC FIELD BASED ON CURRENT DRAWN BY SECURITY DEVICE

      
Application Number 17846281
Status Pending
Filing Date 2022-06-22
First Publication Date 2023-12-21
Owner LEXMARK INTERNATIONAL, INC. (USA)
Inventor
  • Ellis, Jr., James Howard
  • Rademacher, Timothy John

Abstract

A method for determining authenticity of a security device of a component in an imaging device includes receiving, by the security device, an authentication challenge including one or more commands and executing, by the security device, the one or more commands in response to receiving the authentication challenge. A magnetic field profile is generated based on current drawn by the security device from a power source while the security device is executing the one or more commands, the generated magnetic field profile indicating an authentication response of the security device to the authentication challenge for use in determining authenticity of the security device.

IPC Classes  ?

  • G06F 21/34 - User authentication involving the use of external additional devices, e.g. dongles or smart cards
  • G01R 33/02 - Measuring direction or magnitude of magnetic fields or magnetic flux

17.

Toner container having an angled electrical connector

      
Application Number 17894576
Grant Number 11829085
Status In Force
Filing Date 2022-08-24
First Publication Date 2023-11-28
Grant Date 2023-11-28
Owner LEXMARK INTERNATIONAL, INC. (USA)
Inventor
  • Adams, Emily Stefano
  • Boettcher, Brian Lester
  • Merrifield, David Lee

Abstract

A toner container according to one example embodiment includes a plurality of electrical contacts for contacting corresponding electrical contacts in an image forming device when the toner container is installed in the image forming device. The electrical contacts of the toner container are accessible from below at the bottom of the body by the corresponding electrical contacts in the image forming device when the toner container is installed in the image forming device. The electrical contacts of the toner container are spaced from each other along a horizontal dimension that is orthogonal to a vertical dimension of the toner container. A nominal position of the horizontal dimension along which the electrical contacts are spaced from each other is angled relative to a front-to-rear dimension of the toner container and a side-to-side dimension of the toner container.

IPC Classes  ?

  • G03G 15/08 - Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
  • G03G 21/16 - Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
  • G03G 15/00 - Apparatus for electrographic processes using a charge pattern

18.

ENVIRONMENTALLY FRIENDLY PROCESS TO OPTIMIZE COPPER DISSOLUTION AND RECOVER COPPER AND GOLD FROM ELECTRONIC WASTE

      
Application Number 17746132
Status Pending
Filing Date 2022-05-17
First Publication Date 2023-11-23
Owner LEXMARK INTERNATIONAL, INC. (USA)
Inventor
  • Tyagi, Dinesh
  • Luo, Weimei
  • Bellino, Mark Thomas

Abstract

The present invention is related generally to recovering metals from waste electronics, and more particularly to a process to recover copper and gold commonly found in waste printed circuit boards using a lixiviant containing a weak acid such as citric acid or acetic acid, a particular concentration of table salt and an oxidizer. By using this lixiviant, the copper found in the printed circuit board reacts to form copper salts and gold becomes detached. Importantly this recovery method of copper and gold found in waste PCBs is fast, does not pose environmental hazards and is economically feasible.

IPC Classes  ?

19.

AUTHENTICATION USING ANALOG SIGNAL CHALLENGE

      
Application Number 17852946
Status Pending
Filing Date 2022-06-29
First Publication Date 2023-11-16
Owner LEXMARK INTERNATIONAL, INC. (USA)
Inventor
  • Ellis, Jr., James Howard
  • Rademacher, Timothy John
  • Williams, Jennifer Topmiller

Abstract

Determining authenticity of a component in an imaging device includes generating an analog signal as an authentication challenge to the component. The component then generates a response to the authentication challenge by converting the analog signal into one or more digital values and capturing a derivative of the one or more digital values as the response. Authenticity of the component is determined by comparing the response with an expected response.

IPC Classes  ?

  • G06F 21/44 - Program or device authentication
  • G03G 15/08 - Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer

20.

AUTHENTICATION USING ANALOG SIGNAL CHALLENGE

      
Application Number 17847312
Status Pending
Filing Date 2022-06-23
First Publication Date 2023-11-16
Owner LEXMARK INTERNATIONAL, INC. (USA)
Inventor
  • Ellis, Jr., James Howard
  • Rademacher, Timothy John
  • Williams, Jennifer Topmiller

Abstract

A method of determining authenticity of a component in an imaging device includes generating an analog signal as an authentication challenge to the component. The method further includes generating, by the component, a response to the authentication challenge by converting the analog signal into one or more digital values and capturing a derivative of the one or more digital values as the response. Authenticity of the component is determined by comparing the response with an expected response.

IPC Classes  ?

  • G06F 21/44 - Program or device authentication
  • G03G 15/08 - Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer

21.

AUTHENTICATION USING ANALOG SIGNAL CHALLENGE

      
Application Number 17850032
Status Pending
Filing Date 2022-06-27
First Publication Date 2023-11-16
Owner LEXMARK INTERNATIONAL, INC. (USA)
Inventor
  • Ellis, Jr., James Howard
  • Rademacher, Timothy John
  • Williams, Jennifer Topmiller

Abstract

Determining authenticity of a component in an imaging device includes generating an analog signal as an authentication challenge to the component. The component then generates a response to the authentication challenge by converting the analog signal into one or more digital values and capturing a derivative of the one or more digital values as the response. Authenticity of the component is determined by comparing the response with an expected response.

IPC Classes  ?

  • G06F 21/44 - Program or device authentication
  • G03G 15/08 - Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer

22.

AUTHENTICATION USING ANALOG SIGNAL CHALLENGE

      
Application Number 17866646
Status Pending
Filing Date 2022-07-18
First Publication Date 2023-11-16
Owner LEXMARK INTERNATIONAL, INC. (USA)
Inventor
  • Ellis, Jr., James Howard
  • Rademacher, Timothy John
  • Williams, Jennifer Topmiller

Abstract

Determining authenticity of a component in an imaging device includes generating an analog signal as an authentication challenge to the component. The component then generates a response to the authentication challenge by converting the analog signal into one or more digital values and capturing a derivative of the one or more digital values as the response. Authenticity of the component is determined by comparing the response with an expected response.

IPC Classes  ?

  • G06F 21/44 - Program or device authentication
  • G03G 15/08 - Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer

23.

ICE MAKER HEATER ASSEMBLIES

      
Application Number 18195585
Status Pending
Filing Date 2023-05-10
First Publication Date 2023-11-02
Owner LEXMARK INTERNATIONAL, INC. (USA)
Inventor
  • Smith, Jerry Wayne
  • Lucas, Russell Edward
  • Murphy, Calvin Dale
  • Bayerle, Peter Alden

Abstract

An ice maker includes an ice mold having an inner surface and an outer surface. The inner surface of the ice mold is configured to retain water for forming ice cubes in the ice mold. The ice mold includes a plurality of ice lobes each shaped to form a respective ice cube in the ice mold. A heater assembly is positioned on the outer surface of the ice mold. In some embodiments, each of a plurality of heating elements of the heater assembly is aligned with a corresponding lobe of the plurality of lobes for supplying heat to ice cubes formed in the lobes for releasing the ice cubes from the ice mold. In some embodiments, the heater assembly includes a heater having a ceramic substrate and one or more electrically resistive traces and electrically conductive traces thick film printed on the ceramic substrate.

IPC Classes  ?

  • F25C 5/08 - Apparatus for disintegrating, removing or harvesting ice without the use of saws by heating bodies in contact with the ice

24.

IMAGING DOCUMENTS WITH MEDIA BUNDLED AND USED IN PACKAGING MATERIALS

      
Application Number 18211390
Status Pending
Filing Date 2023-06-19
First Publication Date 2023-10-19
Owner LEXMARK INTERNATIONAL, INC. (USA)
Inventor
  • Schoedinger, Kevin Dean
  • Triplett, Edward Lynn
  • Kendall, Scott Allan

Abstract

A business method includes imaging documents with an imaging device placed at a location. Media usage is monitored over a cellular network. Upon the media reaching a predetermined level, workers provide additional media. Workers exist in the “gig” economy and have preplaced media. No longer do users change or swap media in media trays. Packaging materials bundle the media. For use, only a portion of the packaging materials is opened thereby revealing an end of the media. Both the packaging materials and the exposed media are inserted into a reusable media shell in a manner making the media available for picking by the imaging device. Other embodiments are envisioned.

IPC Classes  ?

  • H04N 1/00 - PICTORIAL COMMUNICATION, e.g. TELEVISION - Details thereof
  • G03G 15/00 - Apparatus for electrographic processes using a charge pattern
  • H04N 1/034 - PICTORIAL COMMUNICATION, e.g. TELEVISION - Details thereof - Details of scanning heads for picture-information reproduction using ink, e.g. ink-jet heads

25.

TONER CARTRIDGE LATCHING

      
Application Number 18211470
Status Pending
Filing Date 2023-06-19
First Publication Date 2023-10-19
Owner LEXMARK INTERNATIONAL, INC. (USA)
Inventor Williamson, Randal Scott

Abstract

A first replaceable unit is provided for use with a second replaceable unit in an electrophotographic image forming device. The first replaceable unit includes a latch movable between a latching position for latching the first replaceable unit to the second replaceable unit and an unlatching position for permitting the first replaceable unit to separate from the second replaceable unit. The latch is positioned to contact a latch catch on the second replaceable unit in order to prevent the first replaceable unit from separating from the second replaceable unit when the first replaceable unit is mated with the second replaceable unit and the latch is in the latching position. The latch includes a cam follower surface for contacting a camming surface on the second replaceable unit during mating of the first replaceable unit with the second replaceable unit to cause the latch to move toward the latching or unlatching position.

IPC Classes  ?

  • G03G 21/16 - Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
  • G03G 21/18 - Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements using a processing cartridge

26.

TONER CARTRIDGE ELECTRICAL CONTACTS

      
Application Number 18210363
Status Pending
Filing Date 2023-06-15
First Publication Date 2023-10-12
Owner LEXMARK INTERNATIONAL, INC. (USA)
Inventor
  • Amann, Mark William
  • Boettcher, Brian Lester
  • Carter, Ii, James Anthany
  • Devore, Benjamin Charles
  • Gettelfinger, Darin Michael

Abstract

A toner cartridge according to one example embodiment includes a housing having a reservoir for holding toner. A first electrical contact and a second electrical contact are positioned on a first longitudinal end of the housing. The first electrical contact is electrically connected to processing circuitry positioned on the housing. The second electrical contact is electrically connected to an imaging component positioned on the housing. The first electrical contact is positioned higher than the second electrical contact. A first drive coupler and a second drive coupler are positioned on a second longitudinal end of the housing. The first electrical contact and the second electrical contact are positioned higher than a first rotational axis of the first drive coupler. The first electrical contact is positioned higher than a second rotational axis of the second drive coupler and the second electrical contact is positioned lower than the second rotational axis.

IPC Classes  ?

  • G03G 15/00 - Apparatus for electrographic processes using a charge pattern
  • G03G 15/08 - Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
  • G03G 21/16 - Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements

27.

Toner level sensing using toner container vibration

      
Application Number 17701758
Grant Number 11947282
Status In Force
Filing Date 2022-03-23
First Publication Date 2023-09-28
Grant Date 2024-04-02
Owner Lexmark International, Inc. (USA)
Inventor
  • Chapman, Alexander Lloyd
  • Maxino, Clare Cabahug
  • Navarrete, Neilson Gutay
  • Phillips, Michael Todd
  • Reeves, Scott Daniel
  • Thomas, Daniel Lee

Abstract

A system for an electrophotographic image forming device includes a toner container having a reservoir for storing toner and an impact member configured to selectively impart an impulse force on the toner container to cause vibration of the toner container. A sensor is configured to sense the vibration of the toner container upon the impact member imparting the impulse force on the toner container. Processing circuitry in communication with the sensor is configured to determine an estimate of an amount of toner in the reservoir based on the sensed vibration of the toner container.

IPC Classes  ?

  • G03G 15/08 - Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
  • G03G 15/00 - Apparatus for electrographic processes using a charge pattern
  • G03G 21/10 - Collecting or recycling waste developer
  • G03G 21/12 - Toner waste containers

28.

Material sensing using container vibration

      
Application Number 17701762
Grant Number 11947279
Status In Force
Filing Date 2022-03-23
First Publication Date 2023-09-28
Grant Date 2024-04-02
Owner Lexmark International, Inc. (USA)
Inventor
  • Chapman, Alexander Lloyd
  • Maxino, Clare Cabahug
  • Navarrete, Neilson Gutay
  • Phillips, Michael Todd
  • Reeves, Scott Daniel
  • Thomas, Daniel Lee

Abstract

A system for sensing material within a container includes a container having a reservoir for storing material and an impact member configured to selectively impart an impulse force on the container to cause vibration of the container. A sensor is configured to sense the vibration of the container upon the impact member imparting the impulse force on the container. Processing circuitry in communication with the sensor is configured to determine an estimate of an amount of the material in the container based on the sensed vibration of the container.

IPC Classes  ?

  • G03G 15/00 - Apparatus for electrographic processes using a charge pattern
  • G01F 23/00 - Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
  • G01F 23/296 - Acoustic waves
  • G03G 15/08 - Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer

29.

COOKING DEVICE HAVING A MODULAR CERAMIC HEATER

      
Application Number 18203209
Status Pending
Filing Date 2023-05-30
First Publication Date 2023-09-21
Owner LEXMARK INTERNATIONAL, INC. (USA)
Inventor
  • Smith, Jerry Wayne
  • Schneider, David Anthony
  • Cao, Jichang

Abstract

A cooking device according to one example embodiment includes a plurality of modular heaters. Each modular heater includes a ceramic substrate and an electrically resistive trace positioned on the ceramic substrate. Each modular heater is configured to generate heat when an electric current is supplied to the electrically resistive trace. The cooking device includes a thermally conductive heating plate. The plurality of modular heaters are positioned against a bottom surface of the heating plate. The heating plate includes a top surface positioned to transfer heat provided by the plurality of modular heaters to a cooking vessel for cooking an item held by the cooking vessel.

IPC Classes  ?

  • H05B 3/14 - Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
  • H05B 3/28 - Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor embedded in insulating material
  • H05B 3/26 - Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor mounted on insulating base
  • H05B 3/74 - Non-metallic plates

30.

Collectable Resale Protection

      
Application Number 17692871
Status Pending
Filing Date 2022-03-11
First Publication Date 2023-09-14
Owner Lexmark International, Inc. (USA)
Inventor
  • Castle, Scott R.
  • Fischer, Steve B.
  • Giuliani, Kate O.
  • Thomas, Daniel L.

Abstract

To better protect collectible cards, a better tamper evident case is needed, one that counterfeiters cannot replicate. Disclosed is a collectible card case where each edge is physical unclonable function (“PUF”) material that counterfeiters cannot replicate. Further disclosed is a thermally sealed bag with an integrated PUF material where each bag is unique and unclonable, and a device for sealing and measuring the magnetic and optical properties of the PUF material. Finally, a reusable hard case is disclosed with features that allow for a one-time use PUF security clip.

IPC Classes  ?

  • A63F 1/06 - Card game appurtenances
  • A63F 1/02 - Cards; Special shapes of cards
  • G01R 33/12 - Measuring magnetic properties of articles or specimens of solids or fluids
  • H04L 9/32 - Arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system

31.

THICK FILM PRINTED HEAT SPREADER FOR LOW THERMAL MASS HEATING SOLUTIONS

      
Application Number 18116009
Status Pending
Filing Date 2023-03-01
First Publication Date 2023-09-07
Owner LEXMARK INTERNATIONAL, INC. (USA)
Inventor
  • Lucas, Russell Edward
  • Smith, Jerry Wayne

Abstract

Methods and apparatus include a hair iron having a ceramic heater between first and second arms movable relative to each other between open and closed positions. The ceramic heater has resistive traces that heat up hair during use upon being connected to a power source. On a side of the ceramic heater opposite the resistive traces, a layer of metal is formed to spread out during use the heat from the resistive traces. The metal may be formed as a single or multiple layers. The composition of the metal can be, representatively, pure or alloys of silver, copper, or aluminum with platinum or palladium. The shape of the metal varies as does its coverage on a surface area of the ceramic heater.

IPC Classes  ?

  • H05K 3/12 - Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using printing techniques to apply the conductive material

32.

THICK FILM PRINTED HEAT SPREADER FOR LOW THERMAL MASS HEATING SOLUTIONS

      
Application Number 18116002
Status Pending
Filing Date 2023-03-01
First Publication Date 2023-09-07
Owner LEXMARK INTERNATIONAL, INC. (USA)
Inventor
  • Lucas, Russell Edward
  • Smith, Jerry Wayne

Abstract

Methods and apparatus include a hair iron having a ceramic heater between first and second arms movable relative to each other between open and closed positions. The ceramic heater has resistive traces that heat up hair during use upon being connected to a power source. On a side of the ceramic heater opposite the resistive traces, a layer of metal is formed to spread out during use the heat from the resistive traces. The metal may be formed as a single or multiple layers. The composition of the metal can be, representatively, pure or alloys of silver, copper, or aluminum with platinum or palladium. The shape of the metal varies as does its coverage on a surface area of the ceramic heater.

IPC Classes  ?

  • A45D 2/00 - Hair-curling or hair-waving appliances
  • F28F 21/08 - Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
  • B32B 15/04 - Layered products essentially comprising metal comprising metal as the main or only constituent of a layer, next to another layer of a specific substance
  • B32B 9/04 - Layered products essentially comprising a particular substance not covered by groups comprising such substance as the main or only constituent of a layer, next to another layer of a specific substance
  • B32B 9/00 - Layered products essentially comprising a particular substance not covered by groups

33.

Methods and Systems for Maintaining a Time Measurement on an Electronic Device

      
Application Number 18196166
Status Pending
Filing Date 2023-05-11
First Publication Date 2023-09-07
Owner Lexmark International, Inc. (USA)
Inventor Williams, Jennifer Topmiller

Abstract

An imaging device supply item comprising a memory, the memory storing a supply item manufacturing time stamp. The supply item is configured to send the supply item manufacturing time stamp to an imaging device. A method performed by an imaging device supply item, the method comprising: storing a supply item manufacturing time stamp on a memory of the supply item, and sending the supply item manufacturing time stamp to an imaging device. An imaging device comprising: a memory, the memory storing a time measurement, wherein the imaging device is configured to maintain the time measurement by: updating the time measurement of the imaging device, based on a supply item manufacturing time stamp indicative of a manufacturing time of a supply item installed in the imaging device.

IPC Classes  ?

  • H04N 1/00 - PICTORIAL COMMUNICATION, e.g. TELEVISION - Details thereof
  • H04N 1/44 - Secrecy systems

34.

SEALING ASSEMBLY FOR AN ELECTROPHOTOGRAPHIC IMAGE FORMING DEVICE

      
Application Number 18195087
Status Pending
Filing Date 2023-05-09
First Publication Date 2023-08-31
Owner LEXMARK INTERNATIONAL, INC. (USA)
Inventor
  • Amann, Mark William
  • Goin, Richard Louis
  • Williamson, Randal Scott

Abstract

A sealing assembly according to one example embodiment includes a housing and an imaging component positioned on the housing. A seal has opposed first and second edges extending along a longitudinal dimension of the seal. A lateral dimension of the seal is perpendicular to the longitudinal dimension and extends in a direction from the first edge to the second edge. The seal is attached to the housing along the first edge and contacts the imaging component along the second edge. Upon attachment to the housing, the seal is elastically deformed from an unassembled state in which the second edge has a first profile that varies in the lateral dimension along the longitudinal dimension to an assembled state in which the second edge is deformed relative to the first profile to a second profile having less variation in the lateral dimension along the longitudinal dimension than the first profile.

IPC Classes  ?

  • G03G 15/08 - Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
  • G03G 21/18 - Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements using a processing cartridge

35.

REPLACEABLE UNIT FOR AN ELECTROPHOTOGRAPHIC IMAGE FORMING DEVICE HAVING POSITIONING FEATURES FOR ELECTRICAL CONTACTS

      
Application Number 18139640
Status Pending
Filing Date 2023-04-26
First Publication Date 2023-08-17
Owner LEXMARK INTERNATIONAL, INC. (USA)
Inventor
  • Payne, Jeremy Keith
  • Triplett, Edward Lynn

Abstract

A replaceable unit for an electrophotographic image forming device according to one example embodiment includes an electrical contact positioned on a first side of a housing of the replaceable unit for contacting an electrical contact in the image forming device. A guide on the first side of the housing is positioned closer to a front of the housing than the electrical contact and leads rearward toward the electrical contact. The guide includes an inside surface that faces inward sideways toward a second side of the housing. At least a portion of the inside surface is angled inward sideways from front to rear permitting contact between the inside surface and an electrical connector in the image forming device to draw the electrical connector in the image forming device inward sideways relative to the replaceable unit during insertion of the replaceable unit into the image forming device.

IPC Classes  ?

  • G03G 21/16 - Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
  • G03G 21/18 - Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements using a processing cartridge
  • G03G 15/08 - Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer

36.

Cooking device having a cooking vessel and a ceramic heater

      
Application Number 18139658
Grant Number 11998133
Status In Force
Filing Date 2023-04-26
First Publication Date 2023-08-17
Grant Date 2024-06-04
Owner Lexmark International, Inc. (USA)
Inventor Smith, Jerry Wayne

Abstract

A cooking vessel according to one example embodiment includes a food receptacle for holding food during cooking. The cooking vessel includes an inner shell and an outer shell. An outside surface of the inner shell forms the food receptacle. A portion of an inside surface of the inner shell is spaced from a portion of an inside surface of the outer shell forming a sealed volume between the inner shell and the outer shell. A heat pipe is positioned within the sealed volume between the inner shell and the outer shell for distributing heat through the sealed volume between the inner shell and the outer shell. Embodiments include those wherein each of the inner shell and the outer shell includes a respective bottom wall and a respective side wall.

IPC Classes  ?

  • A47J 36/04 - Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay the materials being non-metallic
  • A47J 27/00 - Cooking-vessels
  • A47J 27/02 - Cooking-vessels with enlarged heating surfaces
  • F24C 15/00 - DOMESTIC STOVES OR RANGES; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION - Details
  • F24C 15/32 - Arrangements of ducts for hot gases, e.g. in or around baking ovens
  • F28D 15/02 - Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls in which the medium condenses and evaporates, e.g. heat-pipes
  • H05B 3/14 - Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
  • H05B 3/26 - Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor mounted on insulating base
  • F24C 7/06 - Arrangement or mounting of electric heating elements
  • H05B 1/02 - Automatic switching arrangements specially adapted to heating apparatus
  • H05B 3/76 - Plates with spirally-wound heating tubes

37.

Authentication Using Current Drawn by Security Device

      
Application Number 18136113
Status Pending
Filing Date 2023-04-18
First Publication Date 2023-08-10
Owner LEXMARK INTERNATIONAL, INC. (USA)
Inventor
  • Ellis, James Howard
  • Fister, Zachary Nathan
  • Rademacher, Timothy John
  • Williams, Jennifer Topmiller

Abstract

A method for determining authenticity of a component in an imaging device is disclosed. Embodiments of the present disclosure provide for a method for a device to use an electronic authentication scheme to authenticate a second device while overcoming vulnerabilities associated with sending data over a communication bus when performing authentication, by using information other than that transmitted over the shared bus as authentication parameters. Embodiments utilize the current drawn by a chip from a power source when the chip performs an operation in response to a command as an authentication parameter.

IPC Classes  ?

  • G06F 21/60 - Protecting data
  • G06F 21/64 - Protecting data integrity, e.g. using checksums, certificates or signatures
  • G06F 21/73 - Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure computing or processing of information by creating or determining hardware identification, e.g. serial numbers
  • G06F 21/79 - Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure storage of data in semiconductor storage media, e.g. directly-addressable memories

38.

Grooming device holder

      
Application Number 29766484
Grant Number D0990914
Status In Force
Filing Date 2021-01-15
First Publication Date 2023-07-04
Grant Date 2023-07-04
Owner Lexmark International, Inc. (USA)
Inventor Pangburn, Thomas Eugene

39.

LOAD-DEPENDENT POWER CONTROL FOR HAIR IRON HAVING CERAMIC HEATERS

      
Application Number 18071975
Status Pending
Filing Date 2022-11-30
First Publication Date 2023-06-22
Owner LEXMARK INTERNATIONAL, INC. (USA)
Inventor
  • Lucas, Russell Edward
  • Menk, Jr., William Alan
  • Smith, Jerry Wayne
  • Zagorski, Eryk

Abstract

Methods and apparatus include a hair iron having a controller and a heater between first and second arms movable relative to each other between open and closed positions. The controller connects or not the heater to a line voltage to heat hair when placed between the arms during use. A proportional-integral-derivative (PID) controller communicates with a thermistor measuring a current temperature of the heater and makes requests of the controller to operate the heater at a setpoint temperature. In various embodiments, the heater heats to full power during warm-up and operates thereafter at lower temperatures based on a reading of the line voltage and a time to adjust the current temperature to the desired setpoint temperature.

IPC Classes  ?

  • G05D 23/24 - Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element having a resistance varying with temperature, e.g. thermistor
  • H02J 3/12 - Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
  • A45D 1/28 - Curling-tongs, i.e. tongs for use when hot; Curling-irons, i.e. irons for use when hot; Accessories therefor with means for controlling or indicating the temperature
  • H05B 1/02 - Automatic switching arrangements specially adapted to heating apparatus

40.

LOAD-DEPENDENT POWER CONTROL FOR HAIR IRON HAVING CERAMIC HEATERS

      
Application Number 18071959
Status Pending
Filing Date 2022-11-30
First Publication Date 2023-06-22
Owner LEXMARK INTERNATIONAL, INC. (USA)
Inventor
  • Lucas, Russell Edward
  • Menk, Jr., William Alan
  • Smith, Jerry Wayne
  • Zagorski, Eryk

Abstract

Methods and apparatus include a hair iron having a controller and a heater between first and second arms movable relative to each other between open and closed positions. The controller connects or not the heater to a line voltage to heat hair when placed between the arms during use. A proportional-integral-derivative (PID) controller communicates with a thermistor measuring a current temperature of the heater and makes requests of the controller to operate the heater at a setpoint temperature. In various embodiments, the heater heats to full power during warm-up and operates thereafter at lower temperatures based on a reading of the line voltage and a time to adjust the current temperature to the desired setpoint temperature.

IPC Classes  ?

  • H05B 1/02 - Automatic switching arrangements specially adapted to heating apparatus
  • A45D 2/00 - Hair-curling or hair-waving appliances
  • G05D 23/24 - Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element having a resistance varying with temperature, e.g. thermistor

41.

Drive coupler actuation via replaceable unit insertion in an image forming device

      
Application Number 17973098
Grant Number 11914322
Status In Force
Filing Date 2022-10-25
First Publication Date 2023-06-15
Grant Date 2024-02-27
Owner Lexmark International, Inc. (USA)
Inventor
  • Gould, Ii, Bartley Charles
  • Shanor, Michael James

Abstract

An assembly for an electrophotographic image forming device includes a drive coupler movable along an axial direction between a retracted position and an extended position. In the retracted position the drive coupler is disengaged from a drive interface of a first replaceable unit when the first replaceable unit is installed in the image forming device. In the extended position the drive coupler is engaged with the drive interface of the first replaceable unit when the first replaceable unit is installed in the image forming device for providing a rotational force to the drive interface of the first replaceable unit. A lever is operatively connected to the drive coupler such that the lever causes the drive coupler to move from the retracted position to the extended position upon the lever receiving an actuation force from insertion of a second replaceable unit that is toward the drive coupler along the axial direction.

IPC Classes  ?

  • G03G 15/00 - Apparatus for electrographic processes using a charge pattern
  • G03G 21/16 - Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
  • G03G 21/18 - Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements using a processing cartridge

42.

Reusable media packaging for imaging device

      
Application Number 18103009
Grant Number 11852992
Status In Force
Filing Date 2023-01-30
First Publication Date 2023-06-08
Grant Date 2023-12-26
Owner LEXMARK INTERNATIONAL, INC. (USA)
Inventor
  • Triplett, Edward Lynn
  • Schoedinger, Kevin Dean
  • Quinn, Todd Allison

Abstract

A reusable media shell has a frame to hold sheets of media in an interior. A removable cap connects to the frame and its manipulation unveils the media for picking by an imaging device. The cap resides on a terminal end of the frame so the frame covers a majority of the media. A lift plate in the interior forces upward the sheets for picking. Two magnets on the frame magnetically secure the frame to magnets in a base of the imaging device and position the sheets in the base. Upstanding walls, a lid and bottom define the interior of the frame. Inserts attached to the walls allow adjustment to accommodate various sizes of the media.

IPC Classes  ?

  • G03G 15/00 - Apparatus for electrographic processes using a charge pattern
  • G03G 21/16 - Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
  • G03G 15/08 - Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
  • G03G 21/12 - Toner waste containers
  • B65H 1/02 - Supports or magazines for piles from which articles are to be separated adapted to support articles on edge
  • B65H 1/26 - Supports or magazines for piles from which articles are to be separated with auxiliary supports to facilitate introduction or renewal of the pile

43.

Methods for Updating an Electronic Device

      
Application Number 17829874
Status Pending
Filing Date 2022-06-01
First Publication Date 2023-05-18
Owner LEXMARK INTERNATIONAL, INC. (Andorra)
Inventor
  • Bush, Stephen Porter
  • Rademacher, Timothy John
  • Williams, Jennifer Topmiller

Abstract

A method for updating an imaging device is described comprising, receiving update information comprising a compatibility update filter indicating which generations of supply item are compatible with the imaging device, and updating a compatibility filter of the imaging device based on the update information, the compatibility filter configured to control which generations of supply item are classified as compatible with the imaging device. An imaging device is also described that comprises firmware and a memory, the memory storing a compatibility filter configured to control which generations of supply item are classified as compatible, wherein the firmware is configured to read the compatibility filter, and the imaging device is configured to update the compatibility filter. Finally, an imaging device supply item is also described.

IPC Classes  ?

  • G06F 8/654 - Updates using techniques specially adapted for alterable solid state memories, e.g. for EEPROM or flash memories
  • G06F 21/44 - Program or device authentication
  • G06F 21/57 - Certifying or maintaining trusted computer platforms, e.g. secure boots or power-downs, version controls, system software checks, secure updates or assessing vulnerabilities

44.

COOKING DEVICE HAVING A COOKING VESSEL AND A CERAMIC HEATER

      
Application Number 18097803
Status Pending
Filing Date 2023-01-17
First Publication Date 2023-05-18
Owner LEXMARK INTERNATIONAL, INC. (USA)
Inventor
  • Cao, Jichang
  • Schneider, David Anthony
  • Smith, Jerry Wayne

Abstract

A cooking device according to one example embodiment includes a base having a top surface positioned to contact a cooking vessel configured to hold food during cooking. The base includes a heater having a ceramic substrate and an electrically resistive trace on an exterior surface of the ceramic substrate. The heater is positioned to supply heat generated by applying an electric current to the electrically resistive trace to the top surface of the base for heating the cooking vessel to heat food in the cooking vessel. In some embodiments, the electrically resistive trace includes an electrical resistor material thick film printed on the exterior surface of the ceramic substrate. In some embodiments, the electrically resistive trace is positioned on a top surface of the ceramic substrate that faces upward toward the top surface of the base.

IPC Classes  ?

  • A47J 27/00 - Cooking-vessels
  • H05B 3/14 - Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
  • A47J 36/04 - Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay the materials being non-metallic
  • H05B 3/26 - Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor mounted on insulating base
  • A47J 27/02 - Cooking-vessels with enlarged heating surfaces
  • F24C 15/00 - DOMESTIC STOVES OR RANGES; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION - Details
  • F24C 15/32 - Arrangements of ducts for hot gases, e.g. in or around baking ovens
  • F28D 15/02 - Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls in which the medium condenses and evaporates, e.g. heat-pipes

45.

Making an aluminum nitride heater

      
Application Number 18096275
Grant Number 11862366
Status In Force
Filing Date 2023-01-12
First Publication Date 2023-05-18
Grant Date 2024-01-02
Owner LEXMARK INTERNATIONAL, INC. (USA)
Inventor
  • Aoki, Makoto
  • Smith, Jerry Wayne

Abstract

A method of making a heater includes an aluminum nitride base having equal to or less than 1% impurities, particularly one embodiment having none of polybrominated biphenyl, polybrominated diphenyl ether, hexabromocyclododecane, polyvinyl chloride, chlorinated paraffin, phthalate, cadmium, hexavalent chromium, lead, and mercury. The base is fired in a heating unit before any layering. Thereafter, on a topside and backside of the base a conductor layer is layered and allowed to settle and dry before firing. Next, a resistive layer is layered on the base from a resistor paste such that the resistive layer connects to the conductor layer on the topside. The resistor paste is allowed to settle and dry and then the base with the conductor and resistor layers is fired. At least four layers of glass are layered next over the resistive layer, each instance thereof including layering a glass, drying the glass and firing.

IPC Classes  ?

  • H01C 17/30 - Apparatus or processes specially adapted for manufacturing resistors adapted for baking
  • H05B 3/28 - Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor embedded in insulating material
  • G03G 15/20 - Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat
  • H05B 3/02 - Ohmic-resistance heating - Details
  • H05B 3/12 - Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material

46.

Methods for Updating an Electronic Device

      
Application Number 17727741
Status Pending
Filing Date 2022-04-23
First Publication Date 2023-04-20
Owner LEXMARK INTERNATIONAL, INC. (USA)
Inventor
  • Bush, Stephen Porter
  • Rademacher, Timothy John
  • Williams, Jennifer Topmiller

Abstract

A method for updating an imaging device is described. The method comprises: receiving update information from a memory of a supply item, the update information comprising an update value, and updating a firmware variable of the imaging device based on the update information. An imaging device is also described that comprises firmware and memory, the memory storing a firmware variable, wherein the firmware is configured to read the firmware variable, and the imaging device is configured to update the firmware variable, by: receiving update information from a memory of a supply item, the update information comprising an update value, and updating the firmware variable of the imaging device based on the update information. An imaging device supply item is also described. The supply item comprises a memory, the memory storing update information, the update information comprising an update value, and the supply item being configured to send the update information.

IPC Classes  ?

  • G06F 8/654 - Updates using techniques specially adapted for alterable solid state memories, e.g. for EEPROM or flash memories
  • G06F 21/57 - Certifying or maintaining trusted computer platforms, e.g. secure boots or power-downs, version controls, system software checks, secure updates or assessing vulnerabilities
  • G06F 21/44 - Program or device authentication

47.

Methods and Systems for Maintaining a Time Measurement on an Electronic Device

      
Application Number 17727744
Status Pending
Filing Date 2022-04-23
First Publication Date 2023-04-20
Owner LEXMARK INTERNATIONAL, INC. (USA)
Inventor Williams, Jennifer Topmiller

Abstract

A method of maintaining a time measurement stored on an electronic device. The method comprises: receiving, by the electronic device, a supply item manufacturing time stamp from a supply item connected to the electronic device, comparing the supply item manufacturing time stamp with the time measurement of the electronic device, and updating, by the electronic device, the time measurement of the electronic device, based on the supply item manufacturing time stamp. An electronic device comprising a memory, the memory storing a time measurement, wherein the electronic device is configured to maintain the time measurement by: receiving a supply item manufacturing time stamp from a supply item connected to the electronic device, and updating the time measurement of the electronic device, based on the supply item manufacturing time stamp. An electronic device supply item, the supply item comprising a memory, the memory storing a supply item manufacturing time stamp, and the supply item being configured to send the supply item manufacturing time stamp to an electronic device.

IPC Classes  ?

  • H04N 1/00 - PICTORIAL COMMUNICATION, e.g. TELEVISION - Details thereof
  • H04N 1/44 - Secrecy systems

48.

Methods and systems for maintaining a time measurement on an electronic device

      
Application Number 17727743
Grant Number 11665298
Status In Force
Filing Date 2022-04-23
First Publication Date 2023-04-20
Grant Date 2023-05-30
Owner Lexmark International Inc. (USA)
Inventor Williams, Jennifer Topmiller

Abstract

A method of maintaining a time measurement stored on an imaging device. The method comprises: receiving, by the imaging device, a supply item manufacturing time stamp from a supply item connected to the imaging device, comparing the supply item manufacturing time stamp with the time measurement of the imaging device, and updating, by the imaging device, the time measurement of the imaging device, based on the supply item manufacturing time stamp. An imaging device comprising a memory, the memory storing a time measurement, wherein the imaging device is configured to maintain the time measurement by: receiving a supply item manufacturing time stamp from a supply item connected to the imaging device, and updating the time measurement of the imaging device, based on the supply item manufacturing time stamp. An imaging device supply item, the supply item comprising a memory, the memory storing a supply item manufacturing time stamp, and the supply item being configured to send the supply item manufacturing time stamp to an imaging device.

IPC Classes  ?

  • G06F 3/12 - Digital output to print unit
  • H04N 1/00 - PICTORIAL COMMUNICATION, e.g. TELEVISION - Details thereof

49.

Methods and Systems for Determining the Authenticity of a Component Using Elliptic-Curve Cryptography

      
Application Number 17498433
Status Pending
Filing Date 2021-10-11
First Publication Date 2023-04-13
Owner Lexmark International, Inc. (USA)
Inventor Rademacher, Timothy John

Abstract

Method of determining authenticity of an item using an elliptic curve E defined over a finite field Fq, where q is an integer, the method comprising: generating a random integer j, where the random integer j is in the interval of one to the integer q; calculating a point T=j S, where point S is a point on elliptic curve E(Fq); calculating a binary value k which is equal to the binary random integer j with a bitmask m applied thereto; sending point T and binary value k to the item; and the item iteratively calculating point U=n·S for different values of integer n, where for each iterative calculation integer n takes different values, wherein for each iteration: the bits of binary integer n corresponding to the unmasked bits of bitmask m are the same as the corresponding bits of binary random integer j; and the bits of binary integer n corresponding to the masked bits of bitmask m are varied in each iteration.

IPC Classes  ?

  • G06Q 30/00 - Commerce
  • H04L 9/30 - Public key, i.e. encryption algorithm being computationally infeasible to invert and users' encryption keys not requiring secrecy
  • G06F 7/58 - Random or pseudo-random number generators

50.

POWER CONTROL FOR HAIR IRON HAVING CERAMIC HEATERS

      
Application Number 17494941
Status Pending
Filing Date 2021-10-06
First Publication Date 2023-04-06
Owner LEXMARK INTERNATIONAL, INC. (USA)
Inventor
  • Cao, Jichang
  • Day, Michael Charles
  • Menk, William Alan

Abstract

A hair iron includes two longitudinally extending arms each having a ceramic heater. Users place hair between the heaters during use. A controller coordinates heating conditions of the heaters. If a line voltage supplied to the hair iron is a high voltage, the controller is configured to alternate heating between the heaters whereby only heating of one heater occurs at one time. To reduce flicker and harmonics, the controller supplies heating current so that one heater remains off for consecutive half-cycles of alternating current while the other heater is powered on variously. The controller then switches the heating. The hair iron further includes a line voltage detector to detect whether a line voltage supplied through a cord to the hair iron is either low voltage or high voltage. During such time, the controller limits heating power to the two heaters.

IPC Classes  ?

  • A45D 1/28 - Curling-tongs, i.e. tongs for use when hot; Curling-irons, i.e. irons for use when hot; Accessories therefor with means for controlling or indicating the temperature
  • A45D 1/04 - Curling-tongs, i.e. tongs for use when hot; Curling-irons, i.e. irons for use when hot; Accessories therefor with means for internal heating, e.g. by liquid fuel by electricity

51.

POWER CONTROL FOR HAIR IRON HAVING CERAMIC HEATERS

      
Application Number 17494946
Status Pending
Filing Date 2021-10-06
First Publication Date 2023-04-06
Owner LEXMARK INTERNATIONAL, INC. (USA)
Inventor
  • Cao, Jichang
  • Day, Michael Charles
  • Menk, William Alan

Abstract

A hair iron includes two longitudinally extending arms each having a ceramic heater. Users place hair between the heaters during use. A controller coordinates timing and voltage conditions to heat the heaters to avoid light flicker and power harmonics. Thermistors provide current heater temperatures of the heaters and a controller calculates a desired heating power. The heating power includes application to the heaters of various half-cycles of AC power from an external AC line voltage.

IPC Classes  ?

  • A45D 1/28 - Curling-tongs, i.e. tongs for use when hot; Curling-irons, i.e. irons for use when hot; Accessories therefor with means for controlling or indicating the temperature
  • A45D 1/04 - Curling-tongs, i.e. tongs for use when hot; Curling-irons, i.e. irons for use when hot; Accessories therefor with means for internal heating, e.g. by liquid fuel by electricity

52.

Toner cartridge having positioning features

      
Application Number 17968051
Grant Number 11982970
Status In Force
Filing Date 2022-10-18
First Publication Date 2023-02-02
Grant Date 2024-05-14
Owner Lexmark International, Inc. (USA)
Inventor
  • Amann, Mark William
  • Boettcher, Brian Lester
  • Carter, Ii, James Anthany

Abstract

A toner cartridge according to one example embodiment includes a housing having a reservoir for holding toner. A first latch-receiving shelf is positioned on a first longitudinal end of the housing and a second latch-receiving shelf is positioned on a second longitudinal end of the housing. Contact surfaces on top portions of the first and second latch-receiving shelves are positioned to contact corresponding first and second latches in an image forming device. The contact surface of the first latch-receiving shelf is positioned lower than a first rotational axis of a first drive coupler of the toner cartridge and higher than a second drive coupler of the toner cartridge. The contact surface of the second latch-receiving shelf is positioned lower than at least a portion of a first electrical contact of the toner cartridge and higher than at least a portion of a second electrical contact of the toner cartridge.

IPC Classes  ?

  • G03G 21/16 - Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
  • G03G 15/08 - Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
  • G03G 21/18 - Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements using a processing cartridge

53.

Electrical contact between a rotatable shaft and a stationary bushing

      
Application Number 17573982
Grant Number 11567443
Status In Force
Filing Date 2022-01-12
First Publication Date 2023-01-31
Grant Date 2023-01-31
Owner Lexmark International, Inc. (USA)
Inventor
  • Boettcher, Brian Lester
  • Gould, Ii, Bartley Charles

Abstract

An electrical contact according to one example embodiment includes a body composed of an electrically conductive material. The body has an axially inboard side and an axially outboard side. An opening through the body is configured to closely receive a shaft of a rotatable component. A mounting tab extends from the axially outboard side of the body for attaching the body to a rotatable gear to rotatably couple the electrical contact to the gear. A contact arm extends in a cantilevered manner from the axially inboard side of the body for contacting a bushing that rotatably supports the shaft to provide an electrical connection between the bushing and the shaft.

IPC Classes  ?

  • G03G 21/16 - Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements

54.

Grooved photoconductive drum end cap

      
Application Number 17573989
Grant Number 11599056
Status In Force
Filing Date 2022-01-12
First Publication Date 2023-01-26
Grant Date 2023-03-07
Owner Lexmark International, Inc. (USA)
Inventor
  • Fahmy, Alfred Louis
  • Freels, Kyle Benjamin
  • Mccoy, Jody Evan

Abstract

A photoconductive drum for an electrophotographic image forming device according to one example embodiment includes a cylindrical drum member. A shaft defines a rotational axis of the photoconductive drum. An end cap is positioned at an axial end of the drum member. An electrical contact is positioned against an axially inboard side of the end cap. The electrical contact electrically connects the shaft to the drum member. The electrical contact includes a plurality of projections that contact an inner circumferential surface of the drum member. A plurality of grooves are formed in an outer circumferential surface of the end cap.

IPC Classes  ?

  • G03G 15/00 - Apparatus for electrographic processes using a charge pattern
  • G03G 21/16 - Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements

55.

Methods and Systems for Determining the Authenticity of a Component

      
Application Number 17876120
Status Pending
Filing Date 2022-07-28
First Publication Date 2023-01-26
Owner Lexmark International, Inc. (USA)
Inventor
  • Fister, Zachary Nathan
  • Foley, Nathan Wayne
  • Rademacher, Timothy John
  • Williams, Jennifer Topmiller

Abstract

A method for determining the authenticity of a component in an electronic device, the method comprising: receiving a seed by a component in the electronic device; storing the seed in a block of non-volatile memory in the component; calculating, by the component, the output of a cryptographic function with the input based on the seed and storing the output in the block of non-volatile memory; iteratively calculating, by the component, the outputs of the cryptographic function wherein for each iteration the input for the cryptographic function is based on the seed and all previous outputs, and for each iteration storing the output in the block of non-volatile memory; and determining the authenticity of the component based on a selected output of the cryptographic function F, the selected output being one of the outputs stored in the block of non-volatile memory.

IPC Classes  ?

  • G06Q 30/00 - Commerce
  • H04L 9/32 - Arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system
  • G06Q 10/08 - Logistics, e.g. warehousing, loading or distribution; Inventory or stock management
  • H04L 9/08 - Key distribution
  • G06T 7/00 - Image analysis

56.

Methods and systems for determining the authenticity of a component

      
Application Number 17371211
Grant Number 11989737
Status In Force
Filing Date 2021-07-09
First Publication Date 2023-01-19
Grant Date 2024-05-21
Owner LEXMARK INTERNATIONAL, INC. (USA)
Inventor
  • Fister, Zachary Nathan
  • Foley, Nathan Wayne
  • Rademacher, Timothy John
  • Williams, Jennifer Topmiller

Abstract

A method for determining the authenticity of an item, the method comprising: receiving, by an item, a seed; storing the seed in a block of non-volatile memory in the supply item follower component; calculating, by the item follower component, an output of a cryptographic function with the input based on the seed and storing the output in the block of non-volatile memory; iteratively calculating, by the item, the outputs of the cryptographic function wherein for each iteration the input for the cryptographic function is based on the seed and all previous outputs, and for each iteration storing the output in the block of non-volatile memory; and determining the authenticity of the item based on a selected output of the cryptographic function of the item, the selected output being one of the outputs stored in the block of non-volatile memory.

IPC Classes  ?

  • G06Q 10/10 - Office automation; Time management
  • G06Q 10/06 - Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
  • G06Q 10/0875 - Itemisation or classification of parts, supplies or services, e.g. bill of materials
  • G06Q 30/018 - Certifying business or products
  • G06Q 30/02 - Marketing; Price estimation or determination; Fundraising
  • G06Q 30/06 - Buying, selling or leasing transactions
  • G06T 7/00 - Image analysis
  • H04L 9/08 - Key distribution
  • H04L 9/32 - Arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system
  • H04L 9/00 - Arrangements for secret or secure communications; Network security protocols

57.

Replaceable unit for an image forming device having a retractable encoded member

      
Application Number 17574006
Grant Number 11550258
Status In Force
Filing Date 2022-01-12
First Publication Date 2023-01-10
Grant Date 2023-01-10
Owner Lexmark International, Inc. (USA)
Inventor
  • Johnson, Jr., Virgil
  • Carter, Daniel Lee
  • Mlejnek, Daniel George

Abstract

A replaceable unit includes a rotatable gear positioned on a housing of the replaceable unit and an encoded member encoded with identifying information of the replaceable unit. The encoded member is positioned on an axially outboard face of the gear such that the encoded member is rotatable with the gear for communicating the identifying information of the replaceable unit to a sensor of an image forming device when the replaceable unit is installed in the image forming device. The encoded member is configured to move axially outward relative to a rotational axis of the gear upon rotation of the gear in a first rotational direction for communicating the identifying information of the replaceable unit to the sensor. The encoded member is configured to move axially inward relative to the rotational axis of the gear upon rotation of the gear in a second rotational direction opposite the first rotational direction.

IPC Classes  ?

  • G03G 21/16 - Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
  • G03G 21/18 - Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements using a processing cartridge
  • G06K 15/00 - Arrangements for producing a permanent visual presentation of the output data

58.

Image forming device having a replaceable unit including a retractable encoded member

      
Application Number 17574012
Grant Number 11550259
Status In Force
Filing Date 2022-01-12
First Publication Date 2023-01-10
Grant Date 2023-01-10
Owner Lexmark International, Inc. (USA)
Inventor
  • Johnson, Jr., Virgil
  • Carter, Daniel Lee
  • Mlejnek, Daniel George

Abstract

A system includes a drive gear and a sensor mounted in an image forming device and a replaceable unit removably installable in the image forming device. The replaceable unit includes a gear for receiving rotational force from the drive gear. The system includes an encoded member encoded with identifying information of the replaceable unit and operatively connected to the gear such that rotation of the gear causes movement of the encoded member for communicating the identifying information of the replaceable unit to the sensor. The encoded member is configured to move toward the sensor upon rotation of the gear of the replaceable unit in a first rotational direction for communicating the identifying information of the replaceable unit to the sensor. The encoded member is configured to move away from the sensor upon rotation of the gear of the replaceable unit in a second rotational direction opposite the first rotational direction.

IPC Classes  ?

  • G03G 21/18 - Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements using a processing cartridge
  • G06K 15/00 - Arrangements for producing a permanent visual presentation of the output data

59.

Electrical connector assembly for an image forming device

      
Application Number 17942585
Grant Number 11762327
Status In Force
Filing Date 2022-09-12
First Publication Date 2023-01-05
Grant Date 2023-09-19
Owner Lexmark International, Inc. (USA)
Inventor
  • Johnson, Jr., Virgil
  • Keese, Darren Adam
  • Leemhuis, James Richard

Abstract

An assembly for an image forming device includes an access door movable between an open position permitting replacement of a replaceable unit and a closed position. An electrical connector in the image forming device is movable between a retracted position and an extended position. In the retracted position the electrical connector is disengaged from a corresponding electrical connector of the replaceable unit when the replaceable unit is installed in the image forming device. In the extended position the electrical connector is engaged with the corresponding electrical connector of the replaceable unit. The electrical connector is operatively connected to the access door such that movement of the access door from the closed to the open position moves the electrical connector from the extended to the retracted position and movement of the access door from the open to the closed position moves the electrical connector from the retracted to the extended position.

IPC Classes  ?

  • G03G 15/00 - Apparatus for electrographic processes using a charge pattern
  • G03G 21/16 - Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
  • G03G 15/08 - Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer

60.

Replaceable unit for an electrophotographic image forming device having a movable electrical connector

      
Application Number 17942398
Grant Number 11927911
Status In Force
Filing Date 2022-09-12
First Publication Date 2023-01-05
Grant Date 2024-03-12
Owner Lexmark International, Inc. (USA)
Inventor
  • Leemhuis, James Richard
  • Martin, Kyle Bradley

Abstract

A replaceable unit for an electrophotographic image forming device includes a housing having a reservoir for holding toner. An electrical connector is positioned on a first side of the housing. The electrical connector includes an electrical contact for contacting a corresponding electrical contact in the image forming device. The electrical contact of the replaceable unit is electrically connected to processing circuitry mounted on the housing. The electrical connector is movable between a first position and a second position. The electrical contact of the replaceable unit moves outward from the first side of the housing along a side-to-side dimension of the housing when the electrical connector moves from the first position to the second position. The electrical contact of the replaceable unit faces downward when the electrical connector is in the second position permitting the corresponding electrical contact to contact the electrical contact of the replaceable unit from below.

IPC Classes  ?

  • G03G 21/16 - Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
  • G03G 15/00 - Apparatus for electrographic processes using a charge pattern
  • G03G 21/18 - Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements using a processing cartridge

61.

Grooming device

      
Application Number 29766495
Grant Number D0974656
Status In Force
Filing Date 2021-01-15
First Publication Date 2023-01-03
Grant Date 2023-01-03
Owner LEXMARK INTERNATIONAL, INC. (USA)
Inventor Pangburn, Thomas Eugene

62.

TRADING CARD SORTER AND METHODS

      
Application Number 17893704
Status Pending
Filing Date 2022-08-23
First Publication Date 2022-12-29
Owner LEXMARK INTERNATIONAL, INC. (USA)
Inventor
  • Hurst, Bradley Austin
  • Day, Michael Charles
  • Thomas, Daniel Lee
  • Turpyn, Michael Richard
  • Wesley, Casey Matthew
  • Keese, Darren Adam
  • Payne, Jeremy Keith

Abstract

A sorter processes trading cards in an affordable, accurate, and easy-to-use manner. The sorter includes an input and output bin. A transport path moves cards between the bins and has two scan bars, one above and one below the path. The scan bars capture an image of a top and bottom surface of ones of the cards. A controller coordinates movement of the cards along the path and receives the image for processing. Users interact with the controller by way of an interface to influence the processing. The sorter also includes a coil to detect metal foil on the cards. Other embodiments are envisioned.

IPC Classes  ?

  • H04N 1/00 - PICTORIAL COMMUNICATION, e.g. TELEVISION - Details thereof
  • B07C 5/36 - Sorting apparatus characterised by the means used for distribution
  • B07C 5/342 - Sorting according to other particular properties according to optical properties, e.g. colour

63.

Shutter for imaging device fuser assembly triggered by cartridge

      
Application Number 17896642
Grant Number 11714376
Status In Force
Filing Date 2022-08-26
First Publication Date 2022-12-29
Grant Date 2023-08-01
Owner LEXMARK INTERNATIONAL, INC. (USA)
Inventor Johnson, Jr., Virgil

Abstract

An imaging device has a fuser assembly and a removably insertable cartridge with an activation device. The fuser assembly has a fusing nip that heats during use. A shutter moves between a fully opened and fully closed position to allow or block access to the fusing nip. A frame has an opening to allow passage of the activation device of the cartridge. During use, the shutter blocks access to the fusing nip until the activation device of the cartridge passes through the opening of the frame and contacts a corresponding activation surface, whereby the shutter begins opening and travels through a range of movement until reaching the fully opened position when the cartridge is fully inserted into the imaging device. Removal of the cartridge reverses the action of the shutter.

IPC Classes  ?

  • G03G 21/16 - Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
  • G03G 15/00 - Apparatus for electrographic processes using a charge pattern

64.

Magnetic PUF with predetermined information layer

      
Application Number 17902779
Grant Number 11951759
Status In Force
Filing Date 2022-09-02
First Publication Date 2022-12-29
Grant Date 2024-04-09
Owner LEXMARK INTERNATIONAL, INC. (USA)
Inventor Hardin, Keith Bryan

Abstract

The invention adds a Physical Information Layer (“PIL”) to the magnetic particles within a matrix that creates an unclonable physical unclonable function “object.” The PIL assists in searching to find the combination that matches a pre-determined enrolled combination with additional information that includes a search index, which limits the range of data required to search in order to find a match in the enrolled database. The index could be a predetermined value that associates the random magnetic profile values to a list of enrolled values in a database. The additional information may include product or general information that needs to be easily communicated to a user of the PUF.

IPC Classes  ?

  • B42D 25/45 - Associating two or more layers
  • B42D 25/369 - Magnetised or magnetisable materials
  • B42D 25/373 - Metallic materials
  • G06K 19/06 - Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
  • G06K 19/08 - Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means

65.

AUTHENTICATION USING MAGNETIC FIELD BASED ON CURRENT DRAWN BY SECURITY DEVICE

      
Application Number 17840979
Status Pending
Filing Date 2022-06-15
First Publication Date 2022-12-29
Owner LEXMARK INTERNATIONAL, INC. (USA)
Inventor
  • Ellis, Jr., James Howard
  • Rademacher, Timothy John

Abstract

A method for determining authenticity of a security device of a component in an imaging device includes receiving, by the security device, an authentication challenge including one or more commands and executing, by the security device, the one or more commands in response to receiving the authentication challenge. A magnetic field profile is generated based on current drawn by the security device from a power source while the security device is executing the one or more commands, the generated magnetic field profile indicating an authentication response of the security device to the authentication challenge for use in determining authenticity of the security device.

IPC Classes  ?

66.

TRADING CARD SORTER AND METHODS

      
Application Number 17894473
Status Pending
Filing Date 2022-08-24
First Publication Date 2022-12-22
Owner LEXMARK INTERNATIONAL, INC. (USA)
Inventor
  • Hurst, Bradley Austin
  • Day, Michael Charles
  • Thomas, Daniel Lee
  • Turpyn, Michael Richard
  • Wesley, Casey Matthew
  • Keese, Darren Adam
  • Payne, Jeremy Keith

Abstract

A sorter processes trading cards in an affordable, accurate, and easy-to-use manner. The sorter includes an input and output bin. A transport path moves cards between the bins and has two scan bars, one above and one below the path. The scan bars capture an image of a top and bottom surface of ones of the cards. A controller coordinates movement of the cards along the path and receives the image for processing. Users interact with the controller by way of an interface to influence the processing. The sorter also includes a coil to detect metal foil on the cards. Other embodiments are envisioned.

IPC Classes  ?

  • H04N 1/00 - PICTORIAL COMMUNICATION, e.g. TELEVISION - Details thereof
  • B07C 5/36 - Sorting apparatus characterised by the means used for distribution
  • B07C 5/342 - Sorting according to other particular properties according to optical properties, e.g. colour

67.

PRINT RELEASE TO IMAGING DEVICE FROM MOBILE COMPUTING DEVICE

      
Application Number 17892333
Status Pending
Filing Date 2022-08-22
First Publication Date 2022-12-15
Owner LEXMARK INTERNATIONAL, INC. (USA)
Inventor
  • Caño, Larraine Belleza
  • Enriquez, Richmond Fajardo
  • Guioguio, Jr., Froilan Balaga
  • Rabor, Ralph Lester Borces
  • Santos, Christopher Gerald Gamboa

Abstract

A system includes a spool directory accessible by a mobile computing device and an imaging device. A user selects for imaging on the imaging device a file accessible by the mobile computing device. The mobile computing device saves the file on the spool directory with a unique name. Upon the user accessing the imaging device for imaging, the imaging device generates a unique quick response code. The user captures the code with a camera of the mobile computing device and the code is used by the mobile computing device to rename the file on the spool directory. That the imaging device knows the quick response code, the imaging device accesses and prints the file on media for the user.

IPC Classes  ?

  • G06F 3/12 - Digital output to print unit
  • G06K 19/06 - Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code

68.

Display screen portion with icon

      
Application Number 29773548
Grant Number D0972600
Status In Force
Filing Date 2021-03-10
First Publication Date 2022-12-13
Grant Date 2022-12-13
Owner LEXMARK INTERNATIONAL, INC. (USA)
Inventor
  • Beck, Jacqueline Karrick
  • Grant, Hayley Bryn
  • Troop, Jessica Raye

69.

AUTHENTICATION USING ANALOG SIGNAL CHALLENGE

      
Application Number 17740476
Status Pending
Filing Date 2022-05-10
First Publication Date 2022-12-01
Owner LEXMARK INTERNATIONAL, INC. (USA)
Inventor
  • Ellis, Jr., James Howard
  • Rademacher, Timothy John
  • Williams, Jennifer Topmiller

Abstract

A method of determining authenticity of a component in an imaging device includes generating an analog signal as an authentication challenge to the component. The method further includes generating, by the component, a response to the authentication challenge by converting the analog signal into one or more digital values and capturing a derivative of the one or more digital values as the response. Authenticity of the component is determined by comparing the response with an expected response.

IPC Classes  ?

  • G06F 21/44 - Program or device authentication
  • G03G 15/08 - Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer

70.

Seal for an electrophotograhic image forming device

      
Application Number 17850426
Grant Number 11561489
Status In Force
Filing Date 2022-06-27
First Publication Date 2022-11-03
Grant Date 2023-01-24
Owner Lexmark International, Inc. (USA)
Inventor
  • Boettcher, Brian Lester
  • Merrifield, David Lee

Abstract

A toner sealing system is described including a seal having first and second alignment features. The seal is selectably installable on one of a first toner container of a first type and a second toner container of a second type. The first alignment feature is matable with a first corresponding alignment feature on the first toner container when the seal is installed on the first toner container for aligning the seal to the first toner container. The second alignment feature is matable with a second corresponding alignment feature on the second toner container when the seal is installed on the second toner container for aligning the seal to the second toner container. Embodiments include those wherein the first alignment feature does not align the seal to the second toner container, and the second alignment feature does not align the seal to the first toner container.

IPC Classes  ?

  • G03G 15/08 - Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer

71.

Security Device Computation Matching

      
Application Number 17498230
Status Pending
Filing Date 2021-10-11
First Publication Date 2022-09-22
Owner Lexmark International, Inc. (USA)
Inventor
  • Fister, Zachary Nathan
  • Rademacher, Timothy John
  • Williams, Jennifer Topmiller

Abstract

A method for determining authenticity of a supply item for an imaging system, the method comprising: performing a cryptographic algorithm on the imaging system, starting with a first algorithm input, performing the cryptographic algorithm on the supply item, starting with the first algorithm input, determining authenticity of the supply item based on an imaging system run time and a supply item run time, wherein the imaging system run time is a run time of the cryptographic algorithm on the imaging system from input of the first algorithm input until a result output is generated, and the supply item run time is a run time of the cryptographic algorithm on the supply item from input of the first algorithm input until the result output is generated.

IPC Classes  ?

  • H04L 9/32 - Arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system
  • H04L 9/08 - Key distribution
  • H04L 9/14 - Arrangements for secret or secure communications; Network security protocols using a plurality of keys or algorithms

72.

Methods and Systems for Selectively Preventing Operation of a Component

      
Application Number 17498494
Status Pending
Filing Date 2021-10-11
First Publication Date 2022-09-22
Owner Lexmark International, Inc. (USA)
Inventor
  • Bush, Stephen Porter
  • Rademacher, Timothy John

Abstract

An imaging system comprising: a system control component having host firmware stored thereon, the system control component comprising a print head operation module actuatable by the host firmware to transmit signals to a print head of the imaging system, the signals configured to cause the print head to operate; and a monitor-enforce module, the monitor-enforce module comprising: a monitor interface configured to receive security information from a security device of the imaging system, and an enforce module, the enforce module being configured to selectively interrupt said signals transmitted by the print head operation module, based on the security information.

IPC Classes  ?

  • G06K 15/00 - Arrangements for producing a permanent visual presentation of the output data

73.

Reusable media packaging for imaging device

      
Application Number 17696950
Grant Number 11675290
Status In Force
Filing Date 2022-03-17
First Publication Date 2022-09-22
Grant Date 2023-06-13
Owner LEXMARK INTERNATIONAL, INC. (USA)
Inventor
  • Triplett, Edward Lynn
  • Schoedinger, Kevin Dean
  • Quinn, Todd Allison

Abstract

A reusable media shell has a frame to hold sheets of media in an interior. A removable cap connects to the frame and its manipulation unveils the media for picking by an imaging device. The cap resides on a terminal end of the frame so the frame covers a majority of the media. A lift plate in the interior forces upward the sheets for picking. Two magnets on the frame magnetically secure the frame to magnets in a base of the imaging device and position the sheets in the base. Upstanding walls, a lid and bottom define the interior of the frame. Inserts attached to the walls allow adjustment to accommodate various sizes of the media.

IPC Classes  ?

  • G03G 15/00 - Apparatus for electrographic processes using a charge pattern
  • G03G 21/16 - Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
  • B65H 1/00 - Supports or magazines for piles from which articles are to be separated
  • G03G 15/08 - Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
  • G03G 21/12 - Toner waste containers
  • B65H 1/02 - Supports or magazines for piles from which articles are to be separated adapted to support articles on edge
  • B65H 1/26 - Supports or magazines for piles from which articles are to be separated with auxiliary supports to facilitate introduction or renewal of the pile

74.

TRADING CARD SORTER AND METHODS

      
Application Number 17683809
Status Pending
Filing Date 2022-03-01
First Publication Date 2022-09-08
Owner LEXMARK INTERNATIONAL, INC. (USA)
Inventor
  • Hurst, Bradley Austin
  • Day, Michael Charles
  • Thomas, Daniel Lee
  • Turpyn, Michael Richard
  • Wesley, Casey Matthew
  • Keese, Darren Adam
  • Payne, Jeremy Keith

Abstract

A sorter processes trading cards in an affordable, accurate, and easy-to-use manner. The sorter includes an input and output bin. A transport path moves cards between the bins and has two scan bars, one above and one below the path. The scan bars capture an image of a top and bottom surface of ones of the cards. A controller coordinates movement of the cards along the path and receives the image for processing. Users interact with the controller by way of an interface to influence the processing. The sorter also includes a coil to detect metal foil on the cards. Other embodiments are envisioned.

IPC Classes  ?

  • H04N 1/00 - PICTORIAL COMMUNICATION, e.g. TELEVISION - Details thereof
  • B07C 5/342 - Sorting according to other particular properties according to optical properties, e.g. colour
  • B07C 5/36 - Sorting apparatus characterised by the means used for distribution

75.

Toner cartridge electrical contacts

      
Application Number 17750799
Grant Number 11635706
Status In Force
Filing Date 2022-05-23
First Publication Date 2022-09-08
Grant Date 2023-04-25
Owner Lexmark International, Inc. (USA)
Inventor
  • Carpenter, Brian Scott
  • Cavill, Gregory Alan
  • Tonges, Jeffrey Lawrence

Abstract

A toner cartridge according to one example embodiment includes a reservoir for holding toner. An outlet is positioned on a front of the toner cartridge for exiting toner from the toner cartridge. First, second and third electrical contacts are positioned on a first side of the toner cartridge for contacting corresponding first, second and third electrical contacts in an image forming device. Each of the first, second and third electrical contacts of the toner cartridge is electrically connected to a respective imaging component positioned on the toner cartridge. The first, second and third electrical contacts of the toner cartridge are positioned such that an imaginary line that angles downward in a direction from a rear of the toner cartridge toward the front of the toner cartridge passes through the first, second and third electrical contacts of the toner cartridge.

IPC Classes  ?

  • G03G 15/08 - Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
  • G03G 21/16 - Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements

76.

Toner cartridge having positioning features including guides extending outward from sides of the toner cartridge

      
Application Number 17726016
Grant Number 11754969
Status In Force
Filing Date 2022-04-21
First Publication Date 2022-08-04
Grant Date 2023-09-12
Owner Lexmark International, Inc. (USA)
Inventor
  • Carpenter, Brian Scott
  • Cavill, Gregory Alan
  • Leemhuis, James Richard
  • Tonges, Jeffrey Lawrence

Abstract

A toner cartridge according to one example includes first and second alignment guides that extend outward from a first side and a second side of the toner cartridge, respectively, for positioning the toner cartridge. The first and second alignment guides define a pivot axis about which the toner cartridge is pivotable relative to an imaging unit when the toner cartridge is installed on the imaging unit. An engagement member is positioned on a rear of the toner cartridge for receiving a bias force for biasing the toner cartridge about the pivot axis when the toner cartridge is installed on the imaging unit. The engagement member is positioned next to the bottom of the housing. The engagement member includes an angled contact surface that faces upward and rearward for contacting a corresponding hold-down on the imaging unit when the toner cartridge is installed on the imaging unit.

IPC Classes  ?

  • G03G 21/18 - Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements using a processing cartridge
  • G03G 15/08 - Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
  • G03G 21/16 - Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements

77.

Drive and seal assembly for an electrophotographic image forming device

      
Application Number 17717543
Grant Number 11703777
Status In Force
Filing Date 2022-04-11
First Publication Date 2022-07-28
Grant Date 2023-07-18
Owner Lexmark International, Inc. (USA)
Inventor
  • Boettcher, Brian Lester
  • Hawes, Brian Lee
  • Merrifield, David Lee

Abstract

An assembly for use in an electrophotographic image forming device includes a housing having a reservoir for holding toner. The housing includes a wall having an inner surface forming a boundary of the reservoir and an outer surface opposite the inner surface. A toner agitator is positioned in the reservoir and has a rotatable shaft. The shaft includes an end portion that passes through an opening in the wall. A gear is mounted on the end portion of the shaft outside of the reservoir and is rotatably coupled to the shaft. An annular seal encircles and is in contact with an outer circumferential surface of the shaft. The annular seal is positioned between an inner axial face of the gear and the outer surface of the wall. The inner axial face of the gear contacts the annular seal and presses the annular seal against the outer surface of the wall.

IPC Classes  ?

  • G03G 15/08 - Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer

78.

Replaceable unit for an electrophotographic image forming device having positioning features for electrical contacts

      
Application Number 17691298
Grant Number 11669040
Status In Force
Filing Date 2022-03-10
First Publication Date 2022-06-23
Grant Date 2023-06-06
Owner Lexmark International, Inc. (USA)
Inventor
  • Payne, Jeremy Keith
  • Triplett, Edward Lynn

Abstract

A replaceable unit for an electrophotographic image forming device according to one example embodiment includes an electrical contact positioned on a first side of a housing of the replaceable unit for contacting an electrical contact in the image forming device. A guide on the first side of the housing is positioned closer to a front of the housing than the electrical contact and leads rearward toward the electrical contact. The guide includes an inside surface that faces inward sideways toward a second side of the housing. At least a portion of the inside surface is angled inward sideways from front to rear permitting contact between the inside surface and an electrical connector in the image forming device to draw the electrical connector in the image forming device inward sideways relative to the replaceable unit during insertion of the replaceable unit into the image forming device.

IPC Classes  ?

  • G03G 21/16 - Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
  • G03G 21/18 - Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements using a processing cartridge
  • G03G 15/08 - Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer

79.

Imaging documents with media bundled and used in packaging materials

      
Application Number 17130660
Grant Number 11962724
Status In Force
Filing Date 2020-12-22
First Publication Date 2022-06-23
Grant Date 2024-04-16
Owner LEXMARK INTERNATIONAL, INC. (USA)
Inventor
  • Schoedinger, Kevin Dean
  • Triplett, Edward Lynn
  • Kendall, Scott Allan

Abstract

A business method includes imaging documents with an imaging device placed at a location. Media usage is monitored over a cellular network. Upon the media reaching a predetermined level, workers provide additional media. Workers exist in the “gig” economy and have preplaced media. No longer do users change or swap media in media trays. Packaging materials bundle the media. For use, only a portion of the packaging materials is opened thereby revealing an end of the media. Both the packaging materials and the exposed media are inserted into a reusable media shell in a manner making the media available for picking by the imaging device. Other embodiments are envisioned.

IPC Classes  ?

  • H04N 1/00 - PICTORIAL COMMUNICATION, e.g. TELEVISION - Details thereof
  • G03G 15/00 - Apparatus for electrographic processes using a charge pattern
  • G06Q 10/0631 - Resource planning, allocation, distributing or scheduling for enterprises or organisations
  • G06Q 10/20 - Administration of product repair or maintenance
  • G06Q 30/0283 - Price estimation or determination
  • H04N 1/034 - PICTORIAL COMMUNICATION, e.g. TELEVISION - Details thereof - Details of scanning heads for picture-information reproduction using ink, e.g. ink-jet heads

80.

Toner cartridge

      
Application Number 29728195
Grant Number D0955472
Status In Force
Filing Date 2020-03-17
First Publication Date 2022-06-21
Grant Date 2022-06-21
Owner Lexmark International, Inc. (USA)
Inventor
  • Johnson, Jr., Virgil
  • Williamson, Randal Scott

81.

Front printer paper tray panel

      
Application Number 29697974
Grant Number D0955474
Status In Force
Filing Date 2019-07-12
First Publication Date 2022-06-21
Grant Date 2022-06-21
Owner Lexmark International, Inc. (USA)
Inventor Pangburn, Thomas Eugene

82.

Front scanner paper feed panel

      
Application Number 29697965
Grant Number D0955473
Status In Force
Filing Date 2019-07-12
First Publication Date 2022-06-21
Grant Date 2022-06-21
Owner Lexmark International, Inc. (USA)
Inventor
  • Pangburn, Thomas Eugene
  • Siekmann, Jay Scott

83.

Toner cartridge latching

      
Application Number 17674303
Grant Number 11720048
Status In Force
Filing Date 2022-02-17
First Publication Date 2022-06-02
Grant Date 2023-08-08
Owner Lexmark International, Inc. (USA)
Inventor Williamson, Randal Scott

Abstract

A first replaceable unit is provided for use with a second replaceable unit in an electrophotographic image forming device. The first replaceable unit includes a latch movable between a latching position for latching the first replaceable unit to the second replaceable unit and an unlatching position for permitting the first replaceable unit to separate from the second replaceable unit. The latch is positioned to contact a latch catch on the second replaceable unit in order to prevent the first replaceable unit from separating from the second replaceable unit when the first replaceable unit is mated with the second replaceable unit and the latch is in the latching position. The latch includes a cam follower surface for contacting a camming surface on the second replaceable unit during mating of the first replaceable unit with the second replaceable unit to cause the latch to move toward the latching or unlatching position.

IPC Classes  ?

  • G03G 21/16 - Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
  • G03G 21/18 - Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements using a processing cartridge

84.

Toner cartridge

      
Application Number 29710459
Grant Number D0952030
Status In Force
Filing Date 2019-10-23
First Publication Date 2022-05-17
Grant Date 2022-05-17
Owner Lexmark International, Inc. (USA)
Inventor
  • Carpenter, Brian Scott
  • Cavill, Gregory Alan
  • Leemhuis, James Richard
  • Martin, Kyle Bradley
  • Siekmann, Jay Scott
  • Tonges, Jeffrey Lawrence
  • Williamson, Randal Scott
  • Gilliam, Trey Dustin

85.

Authentication Using Current Drawn by Security Device

      
Application Number 17469601
Status Pending
Filing Date 2021-09-08
First Publication Date 2022-04-14
Owner LEXMARK INTERNATIONAL, INC. (USA)
Inventor
  • Ellis, Jr., James Howard
  • Fister, Zachary Nathan
  • Rademacher, Timothy John
  • Williams, Jennifer Topmiller

Abstract

A method for determining authenticity of a component in an imaging device is disclosed. Embodiments of the present disclosure provide for a method for a device to use an electronic authentication scheme to authenticate a second device while overcoming vulnerabilities associated with sending data over a communication bus when performing authentication, by using information other than that transmitted over the shared bus as authentication parameters. Embodiments utilize the current drawn by a chip from a power source when the chip performs an operation in response to a command as an authentication parameter.

IPC Classes  ?

  • G06F 21/60 - Protecting data
  • G06F 21/64 - Protecting data integrity, e.g. using checksums, certificates or signatures
  • G06F 21/79 - Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure storage of data in semiconductor storage media, e.g. directly-addressable memories
  • G06F 21/73 - Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure computing or processing of information by creating or determining hardware identification, e.g. serial numbers

86.

Toner cartridge

      
Application Number 29719266
Grant Number D0947937
Status In Force
Filing Date 2020-01-02
First Publication Date 2022-04-05
Grant Date 2022-04-05
Owner Lexmark International, Inc. (USA)
Inventor
  • Carpenter, Brian Scott
  • Cavill, Gregory Alan
  • Siekmann, Jay Scott

87.

Toner cartridge

      
Application Number 29719259
Grant Number D0947936
Status In Force
Filing Date 2020-01-02
First Publication Date 2022-04-05
Grant Date 2022-04-05
Owner Lexmark International, Inc. (USA)
Inventor
  • Carpenter, Brian Scott
  • Cavill, Gregory Alan
  • Siekmann, Jay Scott

88.

Toner cartridge

      
Application Number 29719282
Grant Number D0947938
Status In Force
Filing Date 2020-01-02
First Publication Date 2022-04-05
Grant Date 2022-04-05
Owner Lexmark International, Inc. (USA)
Inventor
  • Carpenter, Brian Scott
  • Cavill, Gregory Alan
  • Tonges, Jeffrey Lawrence

89.

Toner container having a common input gear for a toner agitator assembly and an encoded member

      
Application Number 17543045
Grant Number 11656561
Status In Force
Filing Date 2021-12-06
First Publication Date 2022-03-24
Grant Date 2023-05-23
Owner Lexmark International, Inc. (USA)
Inventor
  • Williamson, Randal Scott
  • Johnson, Jr., Virgil

Abstract

A toner container includes a housing having a toner reservoir. An input gear is positioned on the housing for mating with a corresponding output gear in an image forming device when the toner container is installed in the image forming device. A toner agitator is movably positioned in the reservoir. The toner agitator is operatively connected to the input gear such that rotation of the input gear in a first rotational direction causes movement of the toner agitator for agitating toner in the reservoir. An encoded member is encoded with authentication information of the toner container and is operatively connected to the input gear such that rotation of the input gear in a second rotational direction causes movement of the encoded member for communicating the authentication information of the toner container to a controller of the image forming device when the toner container is installed in the image forming device.

IPC Classes  ?

  • G03G 15/08 - Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
  • G03G 21/18 - Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements using a processing cartridge

90.

Physical unclonable function encoder

      
Application Number 17541003
Grant Number 11632256
Status In Force
Filing Date 2021-12-02
First Publication Date 2022-03-24
Grant Date 2023-04-18
Owner Lexmark International, Inc. (USA)
Inventor
  • Castle, Scott Richard
  • Denton, Gary Allen
  • Muyskens, Robert Henry
  • Rhodus, Samuel Leo

Abstract

The use of a magnetic particle based “PUF” (Physically Unclonable Function) disk, when read by magnetic sensor(s), as a positional encoder is described. It is often necessary to include a linear or rotary encoder within a device for tracking motor movements, or to enable a closed-loop control algorithm on the motor system. These randomly dispersed magnetic particle disks can be used as a positional encoder, where the speed of movement and the direction of movement may be monitored.

IPC Classes  ?

  • H04L 9/32 - Arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system
  • B41J 2/175 - Ink supply systems
  • G01R 33/20 - Arrangements or instruments for measuring magnetic variables involving magnetic resonance
  • H01F 1/055 - Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
  • H04L 9/08 - Key distribution

91.

Combination magnetic and capacitive sensor

      
Application Number 17465593
Grant Number 11686754
Status In Force
Filing Date 2021-09-02
First Publication Date 2022-03-03
Grant Date 2023-06-27
Owner Lexmark International, Inc. (USA)
Inventor
  • Ellis, Jr., James Howard
  • Hardin, Keith Bryan

Abstract

Described is an invention that adds capacitive sensing ability with a single magnetic field sensor location or distributed within an array of surfaces of the sensor. The capacitive sensing can be achieved by modifying a classic Hall effect sensor or putting separate capacitive sensor plates in close proximity to the hall effect sensor.

IPC Classes  ?

  • G01R 27/26 - Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants
  • G01R 33/07 - Hall-effect devices

92.

Shutter for imaging device fuser assembly triggered by cartridge

      
Application Number 17501214
Grant Number 11460800
Status In Force
Filing Date 2021-10-14
First Publication Date 2022-03-03
Grant Date 2022-10-04
Owner LEXMARK INTERNATIONAL, INC. (USA)
Inventor Johnson, Jr., Virgil

Abstract

An imaging device has a fuser assembly and a removably insertable cartridge with an activation device. The fuser assembly has a fusing nip that heats during use. A shutter moves between a fully opened and fully closed position to allow or block access to the fusing nip. A frame has an opening to allow passage of the activation device of the cartridge. During use, the shutter blocks access to the fusing nip until the activation device of the cartridge passes through the opening of the frame and contacts a corresponding activation surface, whereby the shutter begins opening and travels through a range of movement until reaching the fully opened position when the cartridge is fully inserted into the imaging device. Removal of the cartridge reverses the action of the shutter.

IPC Classes  ?

  • G03G 21/16 - Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
  • G03G 15/00 - Apparatus for electrographic processes using a charge pattern

93.

Systems, methods, and apparatus for print release to an image device from a mobile computing device

      
Application Number 17503534
Grant Number 11609726
Status In Force
Filing Date 2021-10-18
First Publication Date 2022-02-17
Grant Date 2023-03-21
Owner LEXMARK INTERNATIONAL, INC. (USA)
Inventor
  • Caño, Larraine Belleza
  • Enriquez, Richmond Fajardo
  • Guioguio, Jr., Froilan Balaga
  • Rabor, Ralph Lester Borces
  • Santos, Christopher Gerald Gamboa

Abstract

A system includes a spool directory accessible by a mobile computing device and an imaging device. A user selects for imaging on the imaging device a file accessible by the mobile computing device. The mobile computing device saves the file on the spool directory with a unique name Upon the user accessing the imaging device for imaging, the imaging device generates a unique quick response code. The user captures the code with a camera of the mobile computing device and the code is used by the mobile computing device to rename the file on the spool directory. That the imaging device knows the quick response code, the imaging device accesses and prints the file on media for the user.

IPC Classes  ?

  • G06F 3/12 - Digital output to print unit
  • G06K 19/06 - Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code

94.

Replaceable units of an electrophotographic image forming device having a shipping or storage separator

      
Application Number 17503749
Grant Number 11520282
Status In Force
Filing Date 2021-10-18
First Publication Date 2022-02-03
Grant Date 2022-12-06
Owner Lexmark International, Inc. (USA)
Inventor
  • Cavill, Gregory Alan
  • Williamson, Randal Scott

Abstract

A toner cartridge according to one embodiment includes a body having a reservoir for storing toner and a rotatable developer roll mounted on the body and in fluid communication with the reservoir. A portion of an outer surface of the developer roll is exposed along a front of the body for supplying toner from the reservoir to a corresponding photoconductive drum on an imaging unit when the toner cartridge is installed on the imaging unit in an operative position of the toner cartridge relative to the imaging unit. A first engagement member positioned on a rear of the body is configured to engage a corresponding second engagement member on the imaging unit when the toner cartridge is installed on the imaging unit to retain the toner cartridge in a storage position of the toner cartridge relative to the imaging unit with the developer roll spaced away from the photoconductive drum.

IPC Classes  ?

  • G03G 21/16 - Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
  • G03G 21/18 - Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements using a processing cartridge
  • G03G 15/08 - Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer

95.

Toner cartridge

      
Application Number 29687982
Grant Number D0941389
Status In Force
Filing Date 2019-04-17
First Publication Date 2022-01-18
Grant Date 2022-01-18
Owner Lexmark International, Inc. (USA)
Inventor
  • Amann, Mark William
  • Boettcher, Brian Lester

96.

Magnetic sensor array device optimization

      
Application Number 17465617
Grant Number 11543472
Status In Force
Filing Date 2021-09-02
First Publication Date 2021-12-23
Grant Date 2023-01-03
Owner LEXMARK INTERNATIONAL, INC. (USA)
Inventor
  • Ellis, Jr., James Howard
  • Hardin, Keith Bryan

Abstract

A magnetic sensor array device is comprised of an array of magnetic sensors arranged on a common semiconductor substrate to measure the multi-axis magnetic field of an arbitrary sized region at high speed with high spatial resolution and high magnetic resolution. This invention further improves a multi-axis magnetic sensor array device fabricated on a common semiconductor substrate with additional optimizations to provide for variable spatial resolution, variable magnetic resolution, and a novel secret key derivation.

IPC Classes  ?

  • G01R 33/12 - Measuring magnetic properties of articles or specimens of solids or fluids
  • G01R 33/00 - Arrangements or instruments for measuring magnetic variables
  • H04L 9/08 - Key distribution
  • G01R 33/07 - Hall-effect devices

97.

Replaceable unit for an electrophotographic image forming device having a magnetic sensor

      
Application Number 17398132
Grant Number 11353824
Status In Force
Filing Date 2021-08-10
First Publication Date 2021-11-25
Grant Date 2022-06-07
Owner Lexmark International, Inc. (USA)
Inventor
  • Leemhuis, James Richard
  • Williamson, Randal Scott

Abstract

A replaceable unit for an electrophotographic image forming device includes a housing having a reservoir for holding toner. An electrical connector is positioned on a first side of the housing. The electrical connector includes an electrical contact for contacting a corresponding electrical contact in the image forming device and a magnetic sensor electrically connected to the electrical contact. The electrical connector is movable between a first position and a second position. When the electrical connector moves from the first position to the second position, the electrical contact of the replaceable unit moves from a retracted position to an operative position. When the electrical connector moves from the first position to the second position, the magnetic sensor moves from a misaligned position to an aligned position with a point in a path of movement of a magnet for sensing a magnetic field of the magnet.

IPC Classes  ?

  • G03G 21/00 - Arrangements not provided for by groups , e.g. cleaning, elimination of residual charge
  • G03G 21/18 - Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements using a processing cartridge
  • G03G 15/00 - Apparatus for electrographic processes using a charge pattern
  • G03G 21/16 - Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
  • G03G 15/08 - Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer

98.

Toner cartridge

      
Application Number 29687971
Grant Number D0936137
Status In Force
Filing Date 2019-04-17
First Publication Date 2021-11-16
Grant Date 2021-11-16
Owner Lexmark International, Inc. (USA)
Inventor
  • Amann, Mark William
  • Boettcher, Brian Lester
  • Carter, Ii, James Anthany
  • Siekmann, Jay Scott

99.

Toner cartridge

      
Application Number 29719275
Grant Number D0936138
Status In Force
Filing Date 2020-01-02
First Publication Date 2021-11-16
Grant Date 2021-11-16
Owner Lexmark International, Inc. (USA)
Inventor
  • Siekmann, Jay Scott
  • Williamson, Randal Scott

100.

Product packaging element

      
Application Number 29711378
Grant Number D0934675
Status In Force
Filing Date 2019-10-30
First Publication Date 2021-11-02
Grant Date 2021-11-02
Owner Lexmark International, Inc. (USA)
Inventor
  • Kim, Hyeob
  • Pangburn, Thomas Eugene
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