In an embodiment, a processor-readable medium stores code representing instructions that when executed by a processor cause the processor to access a list of print jobs for printing. The processor further determines a healthy area of a transfer media. For each job in the list, the processor calculates an image risk area (IRA) based on the healthy area, and ranks each job in a print order according to its IRA.
G03G 15/16 - Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern
adding a second liquid carrier to the concentrated composition to form a final liquid electrostatic ink composition. Also disclosed herein is a liquid electrostatic ink composition producible according to the method.
Apparatus to apply a fluid to a substrate, the apparatus includes a first roller to rotate about an axis and apply a fluid to a first side of the substrate. The first roller includes an outlet to provide gas to the substrate to guide the movement of the substrate subsequent to the application of fluid to the substrate.
B41F 21/00 - Devices for conveying sheets through printing apparatus or machines
B41F 23/00 - Devices for treating the surfaces of sheets, webs or other articles in connection with printing
B41F 23/04 - Devices for treating the surfaces of sheets, webs or other articles in connection with printing by heat drying, by cooling, by applying powders
An electrophotographic varnish composition that comprises, in a liquid carrier, a polymeric resin; an epoxy-based cross-linking agent, a mono-epoxy diluent and a metal catalyst and/or a photo-initiator. Also described herein is a method for making such electrophotographic varnish composition.
Provided in one example herein is a liquid electrophotographic ink composition. The composition comprises a charge director; a non-polar carrier fluid comprising a polymer; and ink particles each comprising a polymeric resin mixture comprising a first polymeric resin having a first melting temperature and a second polymeric resin having a second melting temperature. The second polymeric resin may be a UV-curable polymer that is solid at room temperature, and the second melting temperature is lower than the first melting temperature.
C09D 11/101 - Inks specially adapted for printing processes involving curing by wave energy or particle radiation, e.g. with UV-curing following the printing
An electrostatic printer comprises a charging unit, a photoconductor member, an imaging unit, a developer unit and a controller, The charging unit is to charge the photoconductor member to a charged voltage. The imaging unit is to generate a latent electrostatic image on the photoconductor member by discharging areas of the charged photoconductor member. The developer unit is to develop a toner image on the photoconductor member using a developer voltage. The controller is to change the developer voltage, and to change the charged voltage dependent on the change of the developer voltage.
G03G 15/02 - Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices
G03G 15/06 - Apparatus for electrographic processes using a charge pattern for developing
Certain examples of seals that can move along a slit are disclosed. The seals (60) comprise a first leaf (61), a second leaf (63), and a biasing member (69) to push the first leaf (61) away from the second leaf (63). An apparatus (100) for applying a fluid and printing systems are described.
B41F 19/00 - Apparatus or machines for carrying out printing operations combined with other operations
B05C 5/02 - Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work from an outlet device in contact, or almost in contact, with the work
B41F 31/02 - Ducts, containers, supply or metering devices
Methods of measuring colours, methods of calibrating printers and printing systems for implementing the methods are disclosed. Calibration maps are printed on print media. The calibration maps have intertwined contiguous printed and non-printed areas. One or more colour signals are measured on contiguous printed areas. One or more noise signals are measured on non- printed areas that are adjacent to the contiguous printed areas. Clear colour signals are generated by removing the one or more measured noise signals from the one or more measured colour signals.
An example device is provided in accordance with the present disclosure, which may be used for example for producing printed articles from printed sheets (S) on which are imposed multiple pages of a printed article to be produced. The example device comprises a sheet feeder (10), a sheet path (P) for the advance of a plurality of printed sheets (S) fed by the sheet feeder, a cutter (11) on the sheet path to cut the printed sheets in a direction perpendicular to the sheet advance direction (A), to form at least two sheet portions (SP1, SP2), and a folder (12) on the sheet path downstream of the cutter, to fold the sheet portions.
B65H 35/06 - Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with transverse cutters or perforators from or with blade, e.g. shear-blade, cutters or perforators
B65H 35/08 - Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with transverse cutters or perforators from or with revolving, e.g. cylinder, cutters or perforators
B65H 29/62 - Article switches or diverters diverting faulty articles from the main stream
B65H 37/04 - Article or web delivery apparatus incorporating devices for performing specified auxiliary operations for securing together articles or webs, e.g. by adhesive, stitching, or stapling
B65H 39/10 - Associating articles from a single source, e.g. to form a writing pad
Herein is disclosed a cyan electrostatic ink composition, the cyan electrostatic ink composition comprising: a cyan pigment, a basic dispersant, a phthalocyanine having acid groups, a resin and a charge director.
A method for determining coat weight of a transparent primer coating for liquid electrophotographic printing processes is described, in which an optical brightening agent is added to an aqueous transparent primer composition in an amount of less than 0.1 wt.% based on the total solids content of the primer composition to produce a test composition, the test composition is applied onto a test substrate to produce a transparent primer coating,the fluorescence of the transparent primer coating is measured, and the coat weight of the transparent primer coating based on the fluorescence of the transparent primer coating is determined.
A liquid electrophotographic composition is described, which comprises a carrier liquid, a polymer resin comprising a copolymer of an alkylene monomer and a monomer selected from acrylic acid and methacrylic acid, and at least 5 wt.% of an optical brightening agent based on the total solids content of the composition.
Herein is disclosed a method of electrostatic printing and glossing comprising: forming a first toner image on a print substrate by electrostatically printing an electrostatic ink comprising a first resin component comprising an ethylene acrylic acid resin, an ethylene methacrylic acid resin or combinations thereof; forming a second toner image disposed on the first toner image on the print substrate by electrostatically printing a liquid electro photographic (LEP) printing composition comprising a first resin component comprising an ethylene acrylic acid resin, an ethylene methacrylic acid resin or combinations thereof,and a second resin component present in an amount of about 20% to about 80% by weight of total solids content of the LEP printing composition, the second resin component having a melting point of from about 50º C to about 75º C, which is below the melting point of the first resin component, or from about 140ºC to about 180º C,which is above the melting point of the first resin component; heating the print substrate to at least partially melt the first or second toner image.
Herein is disclosed a liquid electro photographic (LEP) printing composition comprising: a first resin component comprising an ethylene acrylic acid resin, an ethylene methacrylic acid resin or combinations thereof; and a second resin component present in an amount of about 20% to about 80% by weight of total solids content of the composition, the second resin component having a melting point of from about 50˚C to about 75˚C, which is below the melting point of the first resin component, or from about 140˚C to about 180˚C, which is above the melting point of the first resin component.
C09D 11/10 - Printing inks based on artificial resins
C09D 11/106 - Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
A method determines an identification value of a rotatable element having a plurality of mirror facets. The identification value is determined based on a facet scan duration obtained of the mirror facets or based on a prismatic error of the mirror facets.
G03G 15/04 - Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material
G02B 26/12 - Scanning systems using multifaceted mirrors
G04F 13/02 - Apparatus for measuring unknown time intervals by means not provided for in groups using optical means
G03G 15/043 - Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material with means for controlling illumination or exposure
In some examples, an apparatus can include a light transmitter, a light sensor aligned along a light transmittance axis of the light transmitter, an impeller positioned between the light transmitter and the light sensor. The impeller can in some examples include a blade to pass through the light transmittance axis during rotation of the impeller. The blade can in some examples be translucent to permit calibration of the light sensor based on a comparison of a first light sensor reading when the blade intersects the light transmittance axis and a second light sensor reading when the blade does not intersect the light transmittance axis.
G01N 21/27 - Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection
A method for determining coat weight of a printed transparent electrophotographic composition is described, in which a calibration composition is added to a transparent liquid electrophotographic composition to produce a test composition, the calibration composition comprising a carrier liquid, a polymer resin, and at least 5 wt.% of an optical brightening agent based on the total solids content of the calibration composition. The test composition is electrophotographically printed onto a test substrate to produce the printed transparent electrophotographic ink composition; the fluorescence of the printed transparent electrophotographic composition is measured; and the coat weight of the printed transparent electrophotographic composition is determine based on the fluorescence of the printed transparent electrophotographic composition.
A liquid electrophotographic varnish composition comprising: a polymer resin; an epoxy-based cross-linking agent; a solid catalyst comprising at least one amine group; and a carrier liquid.
Herein is disclosed a method of electrostatic printing and foiling comprising: forming a coloured toner image on a print substrate by electrostatically printing an electrostatic ink comprising a first resin component comprising an ethylene acrylic acid resin, an ethylene methacrylic acid resin or combinations thereof; forming an adhesive toner image disposed on the coloured toner image on the print substrate by electrostatically printing a liquid electro photographic (LEP) printing composition comprising a first resin component comprising an ethylene acrylic acid resin, an ethylene methacrylic acid resin or combinations thereof, and a second resin component present in an amount of about 20% to about 80% by weight of total solids content of the LEP printing composition, the second resin component having a melting point of from about 50°C to about 75°C, which is below the melting point of the first resin component; and forming a foiled image disposed on the adhesive toner image by heating the print substrate to at least partially melt the adhesive toner image and applying a foiling material to the print substrate such that the foiling material adheres to the at least partially molten adhesive toner image
The present disclosure relates to a liquid electrophotographic composition comprising: a polymer resin comprising a side group comprising a cross-linkable moiety; and a carrier liquid.
An apparatus for separating liquid and gas comprises a first pipe (10) having a gas outlet (18) at an upper first portion thereof and a liquid outlet (20) at a lower second portion thereof. The apparatus further comprises a second pipe (12) extending at least partly along the first pipe (10) and comprising an inlet (16) for a mix of liquid and gas. A plurality of holes (22) fluidically connects an interior of the second pipe (12) to the interior of the first pipe (10) between the first portion and the second portion of the first pipe.
A roller arrangement (100) for printing apparatus comprises a first roller (101). The first roller (101) comprises a plurality of cells (103, 103a). Each of the plurality of cells (103, 103a) receives an amount of a coating material. The roller arrangement (100) further comprises an extractor (117) to remove at least a portion of the coating material from a selected set of the plurality of the cells (103, 103a).
According to one example, there is provided an imaging system that comprises a housing, a rotatable polygon comprising multiple mirrored facets located in the housing, a laser to generate a laser beam to shine onto the polygon mirror and to reflect onto a target, and wherein, in use, the density of gas within the housing is such that turbulence-related optical distortion within the housing is not greater than a predetermined limit.
G03G 15/04 - Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material
An oil routing system has a first fluid transport device to transport clean oil from an oil recycling apparatus of an imaging system to a first storage tank, the oil having been recycled after use in the imaging system by the recycling apparatus, a second fluid transport device to transport clean oil to a second storage tank, and a third fluid transport device. The clean oil is to be stored in the first storage tank and second storage tank as clean oil, and the third fluid transport device to return clean oil from the first storage tank to the imaging system for reuse, wherein of the first and second storage tanks, the oil routing system routes clean oil to the imaging system for reuse only from the first storage tank.
A method is described in which a spectrum of a surface of a photoconductor member is obtained using optical spectroscopy; and an extent of oxidation of the surface is determined based on the obtained spectrum.
G01N 21/3563 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing solids; Preparation of samples therefor
G03G 15/00 - Apparatus for electrographic processes using a charge pattern
G03G 21/00 - Arrangements not provided for by groups , e.g. cleaning, elimination of residual charge
G01N 21/35 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
26.
BINARY INK DEVELOPER ASSEMBLY INCLUDING A GUARD MEMBER INCLUDING A CONFORMING END HAVING A CONCAVE SHAPE
An example binary ink developer (BID) assembly includes a housing, a developer roller, a squeegee roller, and a guard member. The developer roller receives ink and transfers a portion of the ink to a photoconductive member. The squeegee roller rotates and regulates a film thickness of ink on the developer roller. The squeegee roller includes a curved circumference. The guard member includes a conforming end disposed across from the squeegee roller. Further, the conforming end has a concave shape corresponding to a portion of the curved circumference of the squeegee roller.
Examples disclosed herein relate to application of a coating fluid (155). Examples include an apparatus (100) including a first coating applicator (150) to apply a coating fluid (155) to a plurality of first rollers (130, 140); a first transfer roller (120) in contact with the plurality of first rollers (130, 140) to receive coating fluid (155); and a media path to apply coating fluid (155) from the first transfer roller (120) to a first side of a media (190), wherein the plurality of first rollers (130, 140) are shorter than the first transfer roller (120) and are individually movable along their longitudinal axes such that they may positioned to apply a variable width of coating fluid (155) onto the first transfer roller (120).
B41F 19/00 - Apparatus or machines for carrying out printing operations combined with other operations
B05C 1/08 - Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller
B41F 23/00 - Devices for treating the surfaces of sheets, webs or other articles in connection with printing
B41F 23/08 - Print-finishing devices, e.g. for glossing prints
B41J 11/00 - Devices or arrangements for supporting or handling copy material in sheet or web form
G03G 15/16 - Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern
28.
INK COMPOSITION WITH PIGMENT PARTICLES HAVING A HYDROPHOBIC SURFACE
Provided in one example herein is a liquid electrophotographic ink composition. The composition comprises: a carrier fluid comprising a polymer; ink particles each comprising a non-aqueous polymeric resin and pigment particles distributed in the polymeric resin; and a charge director. The pigment particles comprise a metal oxide and have a hydrophobic surface. The hydrophobic surface comprises at least one of the following: (i) nanoparticles attached to each of the pigment particles, the nanoparticles comprising at least one of an oxide, a phosphate, and a nitrate; (ii) a coating disposed over each of the pigment particles, the coating comprising at least one of an oxide, a phosphate, and a nitrate; and (iii) a coating disposed over each of the pigment particles, the coating comprising at least one of a polymer and an oligomer.
Example implementations relate to a printing an image on a substrate and printing an ultraviolet-sensitive finishing mark on the substrate using ultraviolet-sensitive ink. The ultraviolet-sensitive finishing mark can be visible under ultraviolet light.
According to one example, there is provided an electrostatic printer. The printer comprises a photoconductor member, an imaging unit to generate a latent electrostatic image on the photoconductor member, an interface to receive a developer unit comprising a colored toner, the developer unit to develop a colored toner image on the photoconductor member using an associated base developer voltage, and a controller. The controller is to obtain image data comprising color separation data representing a variant of the colored toner, to control the imaging unit to generate a latent electrostatic image on the photoconductor member in accordance with the obtained color separation data, to determine a variant developer voltage corresponding to the variant of the colored toner, and to control the developer unit to develop a toner image on the photoconductor member using the variant developer voltage to develop a toner image corresponding to the variant of the colored toner.
In an example implementation, a method of rosette-free printing includes, in a printing device whose color plane misregistration is less than 15 percent of a screen ruling of a halftone screen, printing multiple color planes of a multicolor image using the halftone screen.
In one implementation, an image forming apparatus may include a photoconductive unit and a refresh unit. The photoconductive unit may include a photoconductive layer. The photoconductive layer may have a first polarity during a print routine. The refresh unit may apply a voltage to the photoconductive layer to electrically bias the photoconductive layer to have a second polarity during a refresh routine.
G03G 21/00 - Arrangements not provided for by groups , e.g. cleaning, elimination of residual charge
G03G 15/02 - Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices
A computer-implemented method of controlling the creation of a printed document includes the steps of: retrieving print information for generating a print job, said print information specifying characteristics of a document to be printed; retrieving at least one attribute of a print finishing device, said attribute defining a constraint imposed on the print job for printing said document, when the printed document is processed in said print finishing device; and generating a print job based on said print information and said constraint. In one example, retrieving said at least one attribute of a print finishing device includes establishing a communication link to said print finishing device and prompting the print finishing device to transmit the at least one attribute. Said communication link can be established and used on-line at the time of generating the print job or in advance.
According to an example, a printing system may include a web layout module to access a set of images and generate a web layout of the set of images, in which the web layout is arranged in columns of same sized images, each column being arranged in sorted order of image size. The module may further add at least one of advertising material, a coupon, and customer information on a space of a column on which images do not extend a width of the web layout. The printing system may also include a print engine to print the set of images and the at least one of the advertising material, coupon, and customer information on a web of substrate in the generated print layout.
Flexible packaging materials with electrophotographically printed images or information, and processes for preparing such flexible packaging materials are disclosed.
B32B 15/08 - Layered products essentially comprising metal comprising metal as the main or only constituent of a layer, next to another layer of a specific substance of synthetic resin
B32B 27/08 - Layered products essentially comprising synthetic resin as the main or only constituent of a layer next to another layer of a specific substance of synthetic resin of a different kind
B32B 27/10 - Layered products essentially comprising synthetic resin as the main or only constituent of a layer next to another layer of a specific substance of paper or cardboard
B32B 37/15 - Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state
B32B 38/00 - Ancillary operations in connection with laminating processes
36.
Ranking print jobs based on transfer media healthy area
In an embodiment, a processor-readable medium stores code representing instructions that when executed by a processor cause the processor to access a list of print jobs for printing. The processor further determines a healthy area of a transfer media. For each job in the list, the processor calculates an image risk area (IRA) based on the healthy area, and ranks each job in a print order according to its IRA.
G03G 15/16 - Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern
Flexible packaging materials with electrophotographically printed images or information, and processes for preparing such flexible packaging materials are disclosed.
B32B 7/12 - Interconnection of layers using interposed adhesives or interposed materials with bonding properties
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 15/082 - Layered products essentially comprising metal comprising metal as the main or only constituent of a layer, next to another layer of a specific substance of synthetic resin comprising acrylic resins
B32B 15/085 - Layered products essentially comprising metal comprising metal as the main or only constituent of a layer, next to another layer of a specific substance of synthetic resin comprising polyolefins
B32B 15/20 - Layered products essentially comprising metal comprising aluminium or copper
B32B 27/08 - Layered products essentially comprising synthetic resin as the main or only constituent of a layer next to another layer of a specific substance of synthetic resin of a different kind
Flexible packaging materials with electrophotographically printed images or information, and processes for preparing such flexible packaging materials are disclosed.
B32B 15/08 - Layered products essentially comprising metal comprising metal as the main or only constituent of a layer, next to another layer of a specific substance of synthetic resin
B32B 27/08 - Layered products essentially comprising synthetic resin as the main or only constituent of a layer next to another layer of a specific substance of synthetic resin of a different kind
B32B 27/10 - Layered products essentially comprising synthetic resin as the main or only constituent of a layer next to another layer of a specific substance of paper or cardboard
B32B 37/15 - Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state
B32B 38/00 - Ancillary operations in connection with laminating processes
A colorless varnish for digital printing includes a colorless paste, which is made up of anon-polar carrier fluid and a resin swollen in the non-polar carrier fluid. The resin is present in the paste in an amount ranging from about 20% (w/w) to about 50% (w/w). A solid polar compound is dispersed in the resin. The solid polar compound is present in an amount up to 60 wt. % of solids in the colorless paste.
Printers comprising a plurality of imaging units are described. In an example, each imaging unit selectively deposits at least one printing substance and an intermediate transfer member cooperates with the imaging units such that, in use of the printer, a printable image may be formed thereon, the printable image comprising printing substance from at least two imaging units.
Provided is a method of manufacturing an embossing die (12, 14). The method comprises mounting a drum or a plate on a support (36), providing information on a shape of the embossing die, printing a multitude of photopolymer drops with inkjet print heads (30) forming a photopolymer layer upon the drum or the plate based on the provided information, and curing the printed photopolymer layer, e.g. with a UV light source (28). The method may be carried out inline in an embossing apparatus (28).
Electrostatic printing apparatus and intermediate transfer members Herein is disclosed an intermediate transfer member for use in an electrostatic printing process, the intermediate transfer member having an outer release layer comprising a polysiloxane that has been cross-linked using an addition cure process such that it contains Si-R-Si bonds, wherein R is an alkylene moiety, and a monoalkenylsiloxane has been reacted with and incorporated into the polysiloxane. An electrostatic printing apparatus comprising the intermediate transfer member is also disclosed.
G03G 15/16 - Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern
43.
ELECTROSTATIC PRINTING APPARATUS AND INTERMEDIATE TRANSFER MEMBERS
Herein is disclosed an electrostatic printing apparatus comprising: a photoconductive member having a surface on which can be created a latent electrostatic image; an intermediate transfer member comprising: a supportive portion; and an outer release layer disposed on the supportive portion comprising a base polymer matrix and an additive selected from carbon nanotubes and carbon black nanoparticles. The carbon black nanoparticles have a BET surface area of 700 m2/g or greater, the additive is dispersed in the base polymer matrix, and the base polymer is a silicone polymer. The electrostatic printing apparatus is adapted, in use, on contacting the surface of the photoconductive member with an electrostatic ink composition to form a developed toner image on the surface of the latent electrostatic image, then transfer the developed toner image to the outer release layer of intermediate transfer member, and then transfer the developed toner image from the outer release layer of the intermediate transfer member to a print substrate.
G03G 15/16 - Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern
An ink transfer element for a printing apparatus, the ink transfer element comprising a surface for transferring ink applied thereto to at least one further ink transfer element, wherein the surface is configured to, when an ink comprising pigment particles and a liquid vehicle is applied to the surface, at least partly separate the liquid vehicle from the pigment particles, through the surface. The ink transfer element further relates to printing apparatus and a method of printing.
G03G 15/16 - Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern
A transparent electrophotographic varnish composition comprises a charge adjuvant and inorganic filler particles. A method of manufacturing an electrophotographic varnish composition comprises heating a thermoplastic resin mixture until the resin has melted; cooling the resin mixture to form resin particles; contacting the resin particles with a charge adjuvant and inorganic filler particles to form composite particles or a mixture of particles; and combining the composite particles or particulate mixture with a carrier fluid to form the electrophotographic varnish composition. A liquid electrophotographic printing system and a print substrate are also provided.
Blanket replacement systems and methods useable with an image forming apparatus are provided herein. The blanket replacement system removes the blanket from the image transfer member and attaches the blanket to the image transfer member. The blanket replacement system includes a frame member, an engagement motor, and a rotation motor. The frame member holds a blanket having a lead edge portion on one edge and a trail edge portion on an opposing edge. The frame member further includes a lead edge clamp unit and a trail edge clamp unit that holds the lead edge and trail edge portions of the blanket and engages with an image transfer member. The engagement motor engages with the frame member and moves the frame member laterally in relation to the engagement motor. The rotation motor is connected to the engagement motor and rotates the engagement motor and the frame member.
G01G 15/00 - Arrangements for check-weighing of materials dispensed into removable containers
G03G 21/18 - Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements using a processing cartridge
G03G 15/16 - Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern
G03G 21/16 - Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
B23P 19/04 - Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
A colorless digital primer for digital printing includes a colorless paste. The colorless paste includes a non-polar carrier fluid, and a resin swollen in the non-polar carrier fluid. The resin is present in the paste in an amount ranging from about 20% (w/w) to about 50% (w/w). A solid polar compound is dispersed in the resin. The solid polar compound is selected from the group consisting of a cellulose microcrystalline powder, dextrin, maltose monohydrate, polyacrylic acid, polyvinyl alcohol, a styrene maleic anhydride copolymer, a bismaleimide oligomer, sucrose, sucrose octaacetate, sucrose benzoate, and combinations thereof. The solid polar compound is present in an amount up to 60 wt. % of solids in the colorless paste.
G03G 5/00 - Recording-members for original recording by exposure e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
G03G 5/14 - Inert intermediate or cover layers for charge- receiving layers
G03G 7/00 - Selection of materials for use in image-receiving members, i.e. for reversal by physical contact; Manufacture thereof
G03G 9/125 - Developers with toner particles in liquid developer mixtures characterised by the liquid
G03G 9/13 - Developers with toner particles in liquid developer mixtures characterised by polymer components
G03G 9/135 - Developers with toner particles in liquid developer mixtures characterised by stabiliser or charge-controlling agents
C09D 11/033 - Printing inks characterised by features other than the chemical nature of the binder characterised by the solvent
C09D 11/106 - Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
A method includes forming a second set of printing dots on a photosensitive member by a printing dot applicator corresponding to image data of second portions of the image adjacent to first portions of the image. The second set of printing dots are formed on the photosensitive member after the first set of printing dots have been transferred from the photosensitive member. Thus, a merging of adjacent printing dots due to an electrical interaction there between on the photosensitive member is reduced.
A liquid toner for printing conductive traces is provided. The liquid toner includes a carrier liquid and toner particles dispersed in the carrier liquid. The toner particles include a low symmetry electrically conducting material dispersed in a pigment.
In an example implementation, a method of providing image registration information in a digital printing press includes imaging a printed page on an impression drum of a digital printing press, determining image registration information from printed content on the page, and displaying a graphical visualization of the image registration information on a user interface screen of the digital printing press.
In an example implementation, a method of cleaning a silicon photoconductor includes contacting the silicon photoconductor with a base-peroxide solution, rinsing the silicon photoconductor with a liquid, and heating the silicon photoconductor to evaporate the liquid.
G03G 5/00 - Recording-members for original recording by exposure e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
G03G 21/00 - Arrangements not provided for by groups , e.g. cleaning, elimination of residual charge
A printing apparatus comprising a plurality of base color ink containers, each for containing a different base color ink, and a custom color ink container for containing a custom color ink, the printing apparatus being configured to print any of the custom color ink and the different base color inks, from the custom color ink container and the plurality of base color ink containers, respectively, to a print medium. The printing apparatus is configured to mix a custom color ink for the custom color ink container using a combination of any of the base color inks.
In an example implementation, a method of iterative calibration includes, in a first iteration, measuring first values of a calibration parameter, and determining first corrections for the measured first values. The method includes, in a next iteration, measuring next values of the calibration parameter that incorporate the first corrections. The first corrections are omitted from the next iteration measurements to provide pseudo iteration measurements, and the first iteration measurements are averaged with the pseudo iteration measurements. Second corrections are then determined based on the averaging.
Provided is a lay-flat book block production apparatus. The apparatus comprises a glue dispenser, the glue dispenser to transition between an active state in which glue is to be provided to one side of the web which is to be guided past the glue dispenser and an inactive state in which glue is not to be provided to the web which is to be guided past the glue dispenser. The apparatus further comprises a folding unit, wherein the folding unit is to fold the web along a plurality of crease lines wherein each of a plurality of flat portions of a side of the folded web faces another of the plurality of flat portions of a same side.
In an example, a method of wetting a print blanket includes receiving a null cycle trigger during a printing session. The method also includes maintaining printing voltages on a forecast BID (binary ink developer) that has been prepared to print a next color separation onto a photoreceptor, and applying wet null voltages to a non-forecast BID. The method then includes engaging the non- forecast BID with the photoreceptor to transfer fluid other than ink to the photoreceptor during the null cycle.
A method for coating pigment particles is provided, the method comprising heating a polymer resin in a carrier fluid to dissolve the polymer resin; suspending in the carrier fluid white pigment particles to be coated; and cooling the carrier fluid at a rate of 2 °C/hr or less to effect precipitation of the polymer resin from the carrier fluid such that a coating of the resin is formed on the pigment particles, thereby producing the white liquid electrophotographic ink composition.
A method for coating pigment particles is provided, the method comprising heating a polymer resin in a carrier fluid to dissolve the polymer resin; suspending in the carrier fluid white pigment particles to be coated; cooling the carrier fluid to effect precipitation of the polymer resin from the carrier fluid such that a coating of the resin is at least partially formed on the pigment particles; reheating the suspension of partially coated white pigment particles in the carrier fluid; and cooling the carrier fluid at a controlled rate to effect precipitation of the polymer resin from the carrier fluid such that a coating of the resin is formed on the pigment particles,thereby producing the white liquid electrophotographic ink composition.
A method and system for performing color print quality monitoring for a color printing process, the method includes determining a calibration distance (ZCAL) between a Spectrophotometer (140) and an associated calibration patch (310) that provides a maximum luminescence value (LMAX) detected by the Spectrophotometer. The Spectrophotometer (140) is calibrated at the calibration distance by taking a color reading. A first color patch distance (Zl) between the Spectrophotometer and a color calibration patch (320) printed on a sheet (155) is determined from a first maximum color patch luminescence value (LI). A first color reading of the color calibration patch is taken and a second color patch distance (Z2) between the Spectrophotometer and a different area of the color calibration patch (320) is determined to provide a second maximum color patch luminescence value (L2). A second color reading of the color calibration patch is taken and compared with the first color reading to determine if the printing process needs adjusting.
B41F 33/00 - Indicating, counting, warning, control or safety devices
G01N 21/27 - Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection
A method for coating pigment particles is provided, the method comprising heating a polymer resin in a carrier fluid to dissolve the polymer resin, suspending in the carrier fluid the pigment particles to be coated; and effecting precipitation of the polymer resin from the carrier fluid, such that a coating of the resin is formed on the pigment particles.
An apparatus to concentrate electro fluid. The apparatus comprising an electrically grounded drum, a fluid feed to provide electro fluid to the surface of the drum and a roller. The roller comprising a metal core to be electrically biased and a ceramic coating around the metal core.
A developing section for a digital printing press includes a controller to control a development unit such that a configuration of the development unit is to be in a first state or a second state based on a determination by the controller comparing a location of a portion of the surface of a photo imaging member presented to the development unit with a location of a transition between an image portion and a portion of the surface of the photo imaging member not in the image portion.
There is provided a method of cleaning an amorphous silicon electrophotographic printing drum. the method comprises contacting the amorphous silicon of the drum with a base and an oxidising agent; and then rinsing the amorphous silicon with a liquid.
The invention relates to a method for adjusting a gap in a printing system in which a first roller and a second roller are provided, wherein at least one of said first roller and said second roller comprises a seam, said seam corresponding to a variation of the diameter of said first roller and said second roller, respectively, along a circumference thereof. An interaction zone is provided, wherein said second roller is in rolling contact with said first roller under pressure, said interaction zone defining a gap for inserting a media to be printed. A size of said gap is controlled by varying a relative position of said first roller and said second roller when said at least one seam passes through said interaction zone, and said gap is adjusted in accordance with a length of said media to be printed and/or in accordance with a length of an image to be printed.
G03G 15/16 - Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern
B41F 13/193 - Transfer cylinders; Offset cylinders
There is provided an electrostatic ink composition comprising chargeable particles comprising a resin and a conductive pigment; a charge director comprising a sulfosuccinate salt of the general formula MAn, wherein M is a metal, n is the valence of M, and A is an ion of the general formula [R1-O-C(O)CH2CH(SO3)C(O)-O-R2] wherein each of R1 and R2 is an a IkyI group; and a dispersant being or comprising a succinimide linked to a basic group. A method of manufacturing an electrostatic ink composition and a print medium are also described.
C09D 11/03 - Printing inks characterised by features other than the chemical nature of the binder
C09D 11/106 - Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
A press load balancer automatically balances the printing load over a number of presses by taking into account the load on each press and the substrates (i.e., paper types) and inks installed on the presses to improve throughput while minimizing load on the press operators.
In an example, a method of controlling voltage applied to a print blanket within a printing device includes printing a print job. During the printing, a null cycle trigger is received. In response to the trigger, a print blanket bias voltage is reduced from a print bias level to a null bias level.
G03G 15/16 - Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern
In an example, a method of controlling the temperature of a print blanket within a printing device includes printing a print job. During the printing, a pause phase start trigger is sensed. In response to sensing the pause phase start trigger, a set-point of a print blanket heating lamp is changed from a print set- point to a pause set-point to control the print blanket temperature during the pause phase.
G03G 15/16 - Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern
B41F 27/00 - Devices for attaching printing elements or formes to supports
69.
CONTACT CONTROL OF PRINT BLANKET TO IMPRESSION DRUM
In an example, a method of controlling pressure applied to a print blanket (124) within a printing device includes printing a print job. During the printing, a null cycle trigger is received. In response to the trigger, contact between a print blanket and an impression drum (128) is reduced.
G03G 15/16 - Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern
Herein is disclosed a magenta liquid electrostatic ink composition comprising chargeable particles comprising a resin, a pigment, a liquid carrier in which the chargeable particles are dispersed, and a charge director, wherein the resin is formable from polymerising alkylene monomers and methacrylic or acrylic acid monomers, the pigment is selected from pigment violet 19 type αI pigment violet 19 type αII pigment violet 19 type β, pigment violet 19 type γ, pigment red 177, pigment red 208, pigment red 122 and pigment violet 32, and the liquid electrostatic ink composition lacks any other types of pigment. Also disclosed herein is a method of electrostatic printing and a print substrate having printed thereon the magenta liquid electrostatic ink composition.
Multiple packages are manufactured by defining a package template, with at least one individualized image area, and selecting at least one image seed. For each package, an index key is selected and, based on the selected index key, a plurality of image attribute modifications are determined from within applicable ranges of image attribute modifications. The determined image attribute modifications are applied to the image seed or seeds to generate respective images, and the image or images are applied to the respective individualized image area of the package.
G06Q 50/28 - Logistics, e.g. warehousing, loading, distribution or shipping
G06K 15/02 - Arrangements for producing a permanent visual presentation of the output data using printers
B41J 3/407 - Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
B42D 15/00 - Printed matter of special format or style not otherwise provided for
In one example, a web press includes a web press station (610) and a convertible buffer (600) near the web press station, the convertible buffer being configured to convert to a platform (630) for accessing the web press station. A method for performing web press maintenance is also disclosed.
G03G 15/16 - Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern
G03G 15/01 - Apparatus for electrographic processes using a charge pattern for producing multicoloured copies
G03G 15/10 - Apparatus for electrographic processes using a charge pattern for developing using a liquid developer
Herein is disclosed an electrostatic ink composition, wherein the composition is formable by combining: chargeable particles comprising a resin, a charge director comprising a sulfosuccinate salt, and a non-polymeric, non-fatty acid having a pKa, when measured in water at 20°C, of at least 1. Also disclosed herein is a method of forming an electrostatic ink composition, and a method of electrostatic printing.
Methods and apparatus to measure the thickness of a transparent material layer printed on a substrate are described. In one example, the material is illuminated, and the intensity of light received from a first and second portion of material is measured. An average value related to attenuation is used to determine a thickness of the material layer.
Herein is disclosed method of producing an electrostatic ink composition, the method comprising: mixing a pigment and a dispersant to form a pigment dispersion; wherein the pigment is acidic and the dispersant is basic or the pigment is basic and the dispersant is acidic; and then grinding the pigment dispersion with a resin, and wherein a charge director is combined with the pigment and dispersant before, during or after the grinding of the pigment dispersion with the resin to form the electrostatic ink composition.
Color image data is compressed by determining the number of colors within a cell of an input image, each cell comprising an N×M array of pixels; in response to determining that the number of colors is greater than a first predetermined threshold, compress the cell using lossy compression; and in response to determining that the number of colors is less than the first predetermined threshold, reduce the number of colors.
H04N 19/182 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being a pixel
H04N 19/186 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being a colour or a chrominance component
H04N 1/64 - Colour picture communication systems - Details therefor, e.g. coding or decoding means therefor
According to one example, there is provided a printing system. The printing system comprises a printhead receiver to receive a printhead, the printhead to eject printing fluid drops from an array of printhead nozzles to a first printing fluid receiving zone. The printing system further comprises an electrostatic imaging member to store a latent image comprising charged and non-charged portions representing an image to be printed. Part of the electrostatic imaging member is arranged in close proximity to the array of nozzles such that ejected printing fluid drops are electrostatically deflected by charged portions of the electrostatic imaging member to a second printing fluid receiving zone.
An apparatus to calibrate a printer. The apparatus comprises a controller to: control deposition of white printing material on media, the white printing material having an opacity of at least 55%; control deposition of non-white printing material on the white printing material;receive data for at least one sensed characteristic of the non-white printing material; and calibrate the printer using the received data for the at least one sensed characteristic of the non-white printing material.
An ink transfer element for a printing apparatus, the ink transfer element comprising a surface for transferring ink applied thereto to at least one further ink transfer element, wherein the surface is configured to, when an ink comprising pigment particles and a liquid vehicle is applied to the surface, at least partly separate the liquid vehicle from the pigment particles, through the surface. The ink transfer element further relates to printing apparatus and a method of printing.
B41J 2/005 - Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
Coating apparatus including a spray to provide a coating, a controller to control the spray to vary a spraying width of the spray, and a first roller to receive the coating and to smear the coating on a substrate.
B05D 1/02 - Processes for applying liquids or other fluent materials performed by spraying
B05C 1/04 - Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
B41J 11/00 - Devices or arrangements for supporting or handling copy material in sheet or web form
B05C 1/08 - Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller
B05D 1/28 - Processes for applying liquids or other fluent materials performed by transfer from the surfaces of elements carrying the liquid or other fluent material, e.g. brushes, pads, rollers
B05C 11/10 - Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
B05B 12/02 - Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling time, or sequence, of delivery
B05B 1/30 - Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
B05B 12/12 - Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material discharged, of ambient medium or of target responsive to conditions of ambient medium or target, e.g. humidity, temperature
B05B 15/04 - Control of spray area, e.g. masking, side shields; Means for collection or re-use of excess material (B05B 1/28 takes precedence)
B05B 15/08 - Means for adjusting position of spray heads
83.
Methods of printing and electrostatic ink compositions
Methods of Printing and Electrostatic Ink Compositions Herein are disclosed electrostatic ink compositions, methods of printing and printed substrates. In some examples, the electrostatic ink composition comprises a carrier liquid, particles comprising a graft co-polymer comprising an acrylate polymer backbone onto which has been grafted polysiloxane side chains, wherein the particles are dispersed in the carrier liquid.
B41J 2/06 - Ink jet characterised by the jet generation process generating single droplets or particles on demand by electric or magnetic field
B41J 2/41 - Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective supply of electric current or selective application of magnetism to a printing or impression-transfer material for electrostatic printing
According to one example, there is provided apparatus for detecting a fault in a printing system. The apparatus comprises a monitoring module to determine the length of a portion of an imaging member (200) as the imaging member rotates; and indicate a fault condition when the determined length is different to a reference length.
Media treatment apparatus to apply liquid treatment to media, the media treatment apparatus including a roller to receive liquid treatment and to transfer the liquid treatment, and a drop ejector to apply liquid treatment to the roller to transfer liquid treatment to an object.
B41J 2/15 - Arrangement thereof for serial printing
B41J 11/00 - Devices or arrangements for supporting or handling copy material in sheet or web form
B41J 23/08 - Mechanical power drives with driven mechanism arranged to be clutched to continuously-operating power source by one-revolution or part-revolution clutches
Certain examples of an apparatus, a printing system and a method are described that may be used for applying a fluid. In certain cases, an apparatus has a chamber arranged to receive fluid, the chamber being sealed at one or more ends by one or more respective end seals. In one case, at least one end seal is moveable along an axis of the chamber to adjust at least a volume of the chamber.
B05C 5/02 - Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work from an outlet device in contact, or almost in contact, with the work
B41J 3/00 - Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
Herein is disclosed a liquid electrophotographic varnish composition comprising: a polymer resin; an epoxy-based cross-linking agent; a metal catalyst and/or a photo-initiator for catalysing the cross-linking; and a carrier liquid.
Apparatus is described which, in use, applies a thin film of a wetting agent, such as water or a water-based solution, onto paper or other print medium before applying a liquid toner. The wetting agent is applied at a predetermined distance from an image transfer area. The wetting agent acts to promote adhesion of the liquid toner to the print medium. The adhesion of the liquid toner to the print medium is further improved by supplying the wetting agent at a temperature higher than room temperature.
The present disclosure relates to a docking station whereby an underwater robot can be maintained, repaired and managed all the time. According to one aspect of the present disclosure, a docking station can be provided that may comprise: a receiving unit configured to receive an underwater robot therein and positioned under a surface of water; a maintenance unit provided on the receiving unit and positioned above the surface of the water; and a conveyor unit configured to convey the underwater robot from the receiving unit to the maintenance unit.
In an example implementation, a processor-readable medium stores code representing instructions that when executed by a processor cause a plurality of patches to be printed onto a substrate. Each patch comprises a first colored line and a second colored line that are parallel to one another and separated by a distance X. For each patch, a measured reflection value is received and mapped to a curve as a function of X. A color plane registration value is then estimated by interpolating a maximum reflection value between the two highest measured reflection values on the curve.
Herein is disclosed an electrostatic ink composition, wherein the composition is formable by combining: chargeable particles comprising a resin comprising a polymer having acidic side groups, and a cyclic anhydride. Also disclosed herein is a method of forming an electrostatic ink composition, and a method of electrostatic printing.
An example method of controlling a printing process in accordance with aspects of the present disclosure includes controlling an optical density of a printed image such that the optical density is increased for a predetermined portion of a leading edge of a page.
A method of controlling a print engine, the method comprising: printing a first test image including a number of scans of printing components at a first setting of the array of printing components; printing at least a second test image by a number of scans of the printing components at a modified setting of the array of printing components, the modified setting being different from the first setting, wherein the modified setting provides a modified setting for each one of the printing components which is varied according to the position of the respective printing component in the array; optically scanning the printed test images and determining the distinctiveness of a scan band within the printed test images for each one of the test images; and deriving an optimum setting of the array of printing components from a comparison of the determined distinctiveness.
B41J 2/47 - Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of radiation to a printing material or impression-transfer material using the combination of scanning and modulation of light
B41C 1/10 - Forme preparation for lithographic printing; Master sheets for transferring a lithographic image to the forme
B41J 29/393 - Devices for controlling or analysing the entire machine
G06K 15/02 - Arrangements for producing a permanent visual presentation of the output data using printers
An example device for sealing an ink developer unit in accordance with aspects of the present disclosure includes a rigid plate. The device also includes a first compliant sealing member disposed on a first side of the rigid plate to form a seal between the number of rollers of the ink developer unit and the rigid plate. The device also includes a second compliant sealing member disposed on a second side of the rigid plate to form a seal between the rigid plate and an end cap of the ink developer unit. The first compliant sealing member, the second compliant sealing member, or combinations thereof include a developer roller arm aligned with an interior portion of a developer roller face and to allow ink to contact the developer roller face.
Liquid electrophotographic compositions, methods of manufacturing liquid electrophotographic compositions, methods of printing using liquid electrophotographic compositions and printed articles are disclosed.
A valve comprises an orifice plate (1) having one or more orifices (4) through which a fluid may flow, and one or more piezoelectric elements (2). Each element (2) has a face positioned to contact the orifice plate at an orifice. Each element has a first state in which it abuts the plate to prevent flow of fluid through the associated orifice and a second state in which the face is spaced from the plate to allow flow through the associated orifice. A controller (50) selectively applies a first voltage to an elements to cause it to adopt the first state and applies a second voltage to the one or more elements to cause the elements to adopt the second state.
Providing for workflow and finishing solutions for printing are disclosed herein. By way of example, disclosed workflow provides grouping and managing a stream(s) of digital images across a substrate width, for maximizing print productivity and profitability. Digital images are re-sized according to print instructions and oriented into a print stream. Multiple print streams can be organized onto the substrate width, to improve substrate packing. Moreover, disclosed finishing solutions provide for outputting streams of prints according to an output format, in conjunction with rendering the digital images in physical form.
The present disclosure relates to a method for concentrating a substance, which may be an electrostatic printing ink. An apparatus for concentrating a substance is also described.
Herein is disclosed an electrostatic ink composition comprising: a) chargeable particles comprising a resin; b) a charge director comprising a sulfosuccinate salt of the general formula M'Am, wherein M' is a metal, m is the valence of M', and A is an ion of the general formula (I): (I) [R3-O-C(O)CH2CH(SO3)C(O)-O-R4]- wherein each of R3 and R4 is an alkyl group; and c) an optionally substituted naphthalene-sulfonate moiety. Also disclosed is a method of manufacturing an electrostatic ink composition and a printed medium having printed thereon an electrostatic ink composition.
Herein is disclosed a method for processing a liquid electrostatic ink composition, the method comprising: providing an initial liquid electrostatic ink composition comprising chargeable toner particles dispersed in a first liquid carrier, removing at least some of the liquid carrier from the initial liquid electrostatic ink composition using supercritical fluid extraction to provide a concentrated composition comprising the chargeable toner particles, adding a second liquid carrier to the concentrated composition to form a final liquid electrostatic ink composition. Also disclosed herein is a liquid electrostatic ink composition producible according to the method.
patents
