Electrophotographic photoreceptor, and process cartridge and image forming apparatus using the photoreceptor
AssigneeRicoh Company, Ltd.
InventorsHiroshi Tamura, Hidetoshi Kami, Katsuichi Ohta, Tetsuro Suzuki, Tatsuya Niimi, Narihito Kojima
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Abstract
An electrophotographic photoreceptor which includes an electroconductive substrate, and a photosensitive layer which is formed overlying the substrate, wherein the photosensitive layer includes a charge generation material, a charge transport polymer material including triarylamine structure and a soft segment in a main chain thereof, and a filler.
Claims18
An electrophotographic photoreceptor comprising an electroconductive substrate and a photosensitive layer which is formed overlying the substrate, wherein said photosensitive layer comprises a charge generation material, a charge transport polymer material comprising triarylamine structure and having a soft segment in a main chain thereof, and a filler.
An image forming apparatus comprising:
- a photoreceptor;
- a charging device which charges the photoreceptor;
- an imagewise light irradiating device which irradiates the charged photoreceptor with imagewise light to form an electrostatic latent image on the photoreceptor;
- a developing device which develops the electrostatic latent image with a toner to form a toner image on the photoreceptor;
- and
- a transfer device which transfers the toner image onto a receiving material,
- wherein the photoreceptor comprises an electroconductive substrate and a photosensitive layer which is formed overlying the substrate, and wherein the photosensitive layer comprises a charge generation material, a charge transport polymer material comprising triarylamine structure and having a soft segment in a main chain thereof, and a filler.
A process cartridge comprising;
- a photoreceptor;
- and
- at least one of a charging device which charges the photoreceptor, a developing device which develops an electrostatic latent image formed on the photoreceptor, and a cleaning device which cleans a surface of the photoreceptor, wherein the process cartridge is capable of being attached to and detached from an image forming apparatus, wherein the photoreceptor comprises an electroconductive substrate, and a photosensitive layer which is formed overlying the substrate, and wherein the photosensitive layer comprises a charge generation material, a charge transport polymer material comprising triarylamine structure and having a soft segment in a main chain thereof, and a filler.
An image forming method comprising:
- providing a photoreceptor comprising an electroconductive substrate, and a photosensitive layer which is formed overlying the substrate, wherein the photosensitive layer comprises a charge generation material, a charge transport polymer material comprising triarylamine structure and a soft segment in a main chain thereof, and a filler;
- charging the photoreceptor;
- irradiating the charged photoreceptor with imagewise light to form an electrostatic latent image thereon;
- developing the latent image with a toner to form a toner image on the photoreceptor;
- and
- transferring the toner image to a receiving material.
Dependencies are inferred from the claim text.