Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus
First Claim
1. An electrophotographic apparatus comprising an electrophotographic photosensitive member, a charging means, an exposure means, a developing means, and a transferring means,wherein the exposure means is for irradiating the electrophotographic photosensitive member with light having a wavelength of 380 to 450 nm as exposure light,wherein the electrophotographic photosensitive member comprises a support, a charge generation layer provided on the support, and a charge transport layer provided on the charge generation layer,wherein the charge transport layer is a surface layer of the electrophotographic photosensitive member, and contains a binder resin and a charge transport material,wherein the charge transport material consists of a triarylamine compound,wherein the binder resin consists of an aliphatic dicarboxylic acid polyester resin having repeating structural units consisting of repeating structural units each represented by formula (1):
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Abstract
An object of the present invention is to provide an electrophotographic photosensitive member having high durability and hardly causing sensitivity decrease even if short wavelength light, particularly light having a wavelength of 380 to 450 nm is used as exposure light, and a process cartridge and an electrophotographic apparatus having the electrophotographic photosensitive member. The present invention includes an electrophotographic photosensitive member comprising a support and a photosensitive layer which is provided on the support and contains a charge generation material and a charge transport material, characterized in that the surface layer of the electrophotographic photosensitive member contains an aliphatic dicarboxylic acid polyester resin with a weight average molecular weight of 80,000 or more having a specific repeating structural unit, and a process cartridge and an electrophotographic apparatus having the electrophotographic photosensitive member.
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2 Claims
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1. An electrophotographic apparatus comprising an electrophotographic photosensitive member, a charging means, an exposure means, a developing means, and a transferring means,
wherein the exposure means is for irradiating the electrophotographic photosensitive member with light having a wavelength of 380 to 450 nm as exposure light, wherein the electrophotographic photosensitive member comprises a support, a charge generation layer provided on the support, and a charge transport layer provided on the charge generation layer, wherein the charge transport layer is a surface layer of the electrophotographic photosensitive member, and contains a binder resin and a charge transport material, wherein the charge transport material consists of a triarylamine compound, wherein the binder resin consists of an aliphatic dicarboxylic acid polyester resin having repeating structural units consisting of repeating structural units each represented by formula (1):
Specification