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US 2006/0040192 A1Published application
Electrophotographic photoreceptor, and electrophotographic apparatus, process cartridge and method using the photoreceptor
AssigneeRicoh Company, Ltd.
InventorsHiroshi Ikuno, Takeo Tsukamoto
Life of this patent
Estimating the term…
Abstract
An electrophotographic photoreceptor including an electroconductive substrate, a charge generation layer overlying the electroconductive substrate to generate a first charge to form an electrostatic latent image when exposed to a first light, and a charge generation and transport layer overlying the charge generation layer to generate a second charge when exposed to second light and to transport the first and second charges to a surface of the photoreceptor.
Claims9
1-8. (canceled)
An image forming apparatus comprising:
- an electrophotographic photoreceptor;
- a charger configured to charge the electrophotographic photoreceptor with light irradiation and bias application;
- an irradiator configured to irradiate the electrophotographic photoreceptor with imagewise light to form an electrostatic latent image thereon;
- an image developer configured to develop the electrostatic latent image with a developer including a toner to form a toner image thereon;
- and
- a transferer configured to transfer the toner image on to a transfer sheet,
- wherein the electrophotographic photoreceptor includes,
- an electroconductive substrate,
- a charge generation layer overlying the electroconductive substrate and configured to generate a first charge to form an electrostatic latent image when exposed to a first light, and
- a charge generation and transport layer overlying the charge generation layer and configured to generate a second charge when exposed to a second light and to transport the first and second charges to a surface of the photoreceptor.
7 more elements
A process cartridge comprising:
- an electrophotographic photoreceptor;
- and
- a charger configured to charge the electrophotographic photoreceptor with light irradiation and bias application,
- wherein the electrophotographic photoreceptor includes,
- an electroconductive substrate,
- a charge generation layer overlying the electroconductive substrate and configured to generate a first charge to form an electrostatic latent image when exposed to a first light, and
- a charge generation and transport layer overlying the charge generation layer and configured to generate a second charge when exposed to a second light and to transport the first and second charges to a surface of the photoreceptor.
4 more elements
An image forming method comprising:
- charging an electrophotographic photoreceptor while irradiating the photoreceptor with light and applying a bias thereto;
- irradiating the electrophotographic photoreceptor with imagewise light to form an electrostatic latent image thereon;
- developing the electrostatic latent image with a developer including a toner to form a toner image thereon;
- and
- transferring the toner image onto a transfer sheet,
- wherein the electrophotographic photoreceptor includes,
- an electroconductive substrate,
- a charge generation layer overlying the electroconductive substrate and configured to generate a first charge to form an electrostatic latent image when exposed to a first light, and
- a charge generation and transport layer overlying the charge generation layer and configured to generate a second charge when exposed to a second light and to transport the first and second charges to a surface of the photoreceptor.
6 more elements
12-21. (canceled)
An image forming apparatus comprising:
- an electrophotographic photoreceptor;
- a charger configured to charge the electrophotographic photoreceptor with light irradiation and bias application;
- an irradiator configured to irradiate the electrophotographic photoreceptor with imagewise light to form an electrostatic latent image thereon;
- an image developer configured to develop the electrostatic latent image with a developer including a toner to form a toner image thereon;
- and
- a transferer configured to transfer the toner image on to a transfer sheet,
- wherein the electrophotographic photoreceptor includes,
- an electroconductive substrate,
- a first charge generation layer overlying the electroconductive substrate and configured to generate a first charge to form an electrostatic latent image when exposed to a first light, said first charge generation layer including a first charge generation material, a charge transport layer overlying the first charge generation layer, and
- a second charge generation layer overlying the charge transport layer and configured to generate a second charge when exposed to a second light, said second charge generation layer including a second charge generation material, and
- wherein the charge transport layer transports the first charge to the second charge generation layer.
8 more elements
A process cartridge comprising:
- an electrophotographic photoreceptor;
- and
- a charger configured to charge the electrophotographic photoreceptor with light irradiation and bias application,
- wherein the electrophotographic photoreceptor includes,
- an electroconductive substrate,
- a first charge generation layer overlying the electroconductive substrate and configured to generate a first charge to form an electrostatic latent image when exposed to a first light, said first charge generation layer including a first charge generation material,
- a charge transport layer overlying the first charge generation layer, and
- a second charge generation layer overlying the charge transport layer and configured to generate a second charge when exposed to a second light, said second charge generation layer including a second charge generation material, and
- wherein the charge transport layer transports the first charge to the second charge generation layer.
6 more elements
An image forming method comprising:
- charging an electrophotographic photoreceptor while irradiating the photoreceptor with light and applying a bias thereto;
- irradiating the electrophotographic photoreceptor with imagewise light to form an electrostatic latent image thereon;
- developing the electrostatic latent image with a developer including a toner to form a toner image thereon;
- and
- transferring the toner image on to a transfer sheet,
- wherein the electrophotographic photoreceptor includes,
- an electroconductive substrate,
- a first charge generation layer overlying the electroconductive substrate and configured to generate a first charge to form an electrostatic latent image when exposed to a first light, said first charge generation layer including a first charge generation material,
- a charge transport layer overlying the first charge generation layer, and
- a second charge generation layer overlying the charge transport layer and configured to generate a second charge when exposed to a second light, said second charge generation layer including a second charge generation material, and
- wherein the charge transport layer transports the first charge to the second charge generation layer.
8 more elements
25-26. (canceled)
Dependencies are inferred from the claim text.