Abstract

Provided is an image forming sheet for electrophotography, in which the generation of blister is suppressed. The image forming sheet for electrophotography includes a substrate 110 and an image receiving layer having a pigment 122 coated on the substrate, particles 124 interspersed among the pigments 122, and a binding resin, a volume average particle diameter of the particles being larger than a thickness of a portion of the image receiving layer where the particles do not exist.

IPC Classes  ?

• G03G 7/00 - Selection of materials for use in image-receiving members, i.e. for reversal by physical contact; Manufacture thereof

Abstract

The invention provides an image-forming apparatus, having an electrophotographic photoreceptor, a charging unit, a light-exposure unit, a development unit, a transfer unit, and a controller that controls the traveling speed of the peripheral surface of the electrophotographic photoreceptor and that thus makes a period from charging to development variable, wherein: the electrophotographic photoreceptor has an undercoat layer and a photosensitive layer; and the undercoat layer contains metal oxide fine particles with an acceptor compound added thereto; and an image is formed by charging, light exposure, development and transfer while causing the peripheral surface of the electrophotographic photoreceptor to travel in a predetermined direction; and a process cartridge that is detachable from the image forming apparatus.

IPC Classes  ?

• G03G 5/04 - Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor
• G03G 5/05 - Organic bonding materials; Methods for coating a substrate with a photoconductive layer; Inert supplements for use in photoconductive layers
• G03G 5/10 - Bases for charge-receiving or other layers
• G03G 15/22 - Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups

Abstract

An electrophotographic photoreceptor including at least an undercoat layer and a photosensitive layer on a conductive substrate, in which the undercoat layer includes metal oxide fine particles to which an electron acceptor compound is attached.

IPC Classes  ?

• G03G 5/10 - Bases for charge-receiving or other layers
• G03G 15/05 - Apparatus for electrographic processes using a charge pattern for imagewise charging, e.g. photoconductive control screen, optically activated charging means
• G03G 15/14 - Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base

Abstract

An image forming apparatus comprising an electrophotographic photoreceptor, a charging unit, an exposure unit, a development unit, and a transfer unit, wherein the image forming apparatus conducts charging, exposure, development, and transfer while moving a circumferential surface of the electrophotographic photoreceptor in a predetermined direction, the image forming apparatus further comprises a controlling unit which controls a moving velocity of the circumferential surface of the electrophotographic photoreceptor so that a time required for processes from charging to development is changeable, the electrophotographic photoreceptor includes an undercoat layer and a photosensitive layer, and the undercoat layer includes a metal oxide particle and an acceptor compound having a group capable of reacting with the metal oxide particle.

IPC Classes  ?

• G03G 15/22 - Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups

Abstract

An electrophotographic photoreceptor comprising: an electrophotographic photoreceptor having at least an undercoat layer and a photosensitive layer formed on a conductive substrate, wherein the undercoat layer contains metal oxide fine particles and an electron acceptor compound having a group reactive with the metal oxide fine particles. A process cartridge and an electrophotographic apparatus using the electrophotographic photoreceptor are also provided.

IPC Classes  ?

• G03G 5/04 - Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor
• G03G 5/05 - Organic bonding materials; Methods for coating a substrate with a photoconductive layer; Inert supplements for use in photoconductive layers
• G03G 5/10 - Bases for charge-receiving or other layers
• G03G 15/22 - Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups