Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus
AssigneeCanon Kabushiki Kaisha
InventorsKouichi Nakata, Yosuke Morikawa, Kimihiro Yoshimura, Hiroshi Saito
Life of this patent
Estimating the term…
Abstract
An electrophotographic photosensitive member exhibiting a good durability and stable electrophotographic performances regardless of environmental change is provided by coating the photosensitive layer with a specific protective layer. The protective layer comprises a cured phenolic resin and a charge-transporting compound having at least one group selected from the group consisting of hydroxyalkyl groups, hydroxyalkoxy groups and hydroxyphenyl groups capable of having a substituent.
Claims13
An electrophotographic photosensitive member, comprising:
- a support, a photosensitive layer and a protective layer in this order;
- wherein said protective layer comprises a cured product of a resole-type phenolic resin and a charge-transporting compound having at least one group selected from the group consisting of hydroxyalkyl groups, hydroxyalkoxy groups and hydroxyphenyl groups capable of having a substituent.
A process cartridge, comprising:
- an electrophotographic photosensitive member and at least one means selected from the group consisting of charging means, developing means and cleaning means;
- said electrophotographic photosensitive member and said at least one means being integrally supported and detachably mountable to a main assembly of an electrophotographic apparatus, wherein said electrophotographic photosensitive member comprises an electrophotographic photosensitive member, comprising:
- a support, a photosensitive layer and a protective layer in this order;
- wherein said protective layer comprises a cured product of a resole-type phenolic resin and a charge-transporting compound having at least one group selected from the group consisting of hydroxyalkyl groups, hydroxyalkoxy groups and hydroxyphenyl groups capable of having a substituent.
An electrophotographic apparatus, comprising:
- an electrophotographic photosensitive member, and charging means, developing means and transfer means respectively disposed opposite to the electrophotographic photosensitive member, wherein said electrophotographic photosensitive member comprises an electrophotographic photosensitive member, comprising:
- a support, a photosensitive layer and a protective layer in this order;
- wherein said protective layer comprises a cured product of a resole-type phenolic resin and a charge-transporting compound having at least one group selected from the group consisting of hydroxyalkyl groups, hydroxyalkoxy groups and hydroxyphenyl groups capable of having a substituent.
Dependencies are inferred from the claim text.