Electrophotographic photosensitive member, production method therefor, process cartridge, and electrophotographic image-forming apparatus
AssigneeCanon Kabushiki Kaisha
InventorsHaruki Mori, Masaki Nonaka, Eileen Takeuchi
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Abstract
Provided is an electrophotographic photosensitive member that can achieve both of satisfactory wear resistance and the suppression of an image streak at the time of its repeated use. The electrophotographic photosensitive member includes a support and a photosensitive layer. The surface layer of the electrophotographic photosensitive member contains: a polymer of a hole-transportable compound having a chain-polymerizable functional group; and an ester compound having specific alkyl groups.
Claims11
An electrophotographic photosensitive member comprising:
- a support;
- and
- a photosensitive layer,
- wherein a surface layer of the electrophotographic photosensitive member contains:
- a polymer of a hole-transportable compound having a chain-polymerizable functional group;
- and a compound represented by the following formula (1):
- in the formula (1), one of R11 and R12 represents a linear alkyl group having 7 or more carbon atoms, and another thereof represents a linear alkyl group having 1 or more and 4 or less carbon atoms.
A production method for an electrophotographic photosensitive member including a support and a photosensitive layer, the production method comprising:
- preparing a coating liquid for a surface layer containing a composition containing a hole-transportable compound having a chain-polymerizable functional group and a compound represented by the following formula (1);
- forming a coat of the coating liquid for a surface layer;
- and
- curing the coat to form a surface layer:
- in the formula (1), one of R11 and R12 represents a linear alkyl group having 7 or more carbon atoms, and another thereof represents a linear alkyl group having 1 or more and 4 or less carbon atoms.
A process cartridge comprising:
- an electrophotographic photosensitive member;
- and
- at least one unit selected from the group consisting of a charging unit, a developing unit, and a cleaning unit,
- the process cartridge integrally supporting the electrophotographic photosensitive member and the at least one unit, and being removably mounted onto a main body of an electrophotographic apparatus,
- wherein the electrophotographic photosensitive member comprises an electrophotographic photosensitive member including a support and a photosensitive layer, the electrophotographic photosensitive member including a surface layer containing:
- a polymer of a hole-transportable compound having a chain-polymerizable functional group;
- and a compound represented by the following formula (1):
- in the formula (1), one of R11 and R12 represents a linear alkyl group having 7 or more carbon atoms, and another thereof represents a linear alkyl group having 1 or more and 4 or less carbon atoms.
An electrophotographic image-forming apparatus comprising:
- an electrophotographic photosensitive member;
- and
- at least one unit selected from the group consisting of a charging unit, an exposing unit, a developing unit, and a transferring unit,
- wherein the electrophotographic photosensitive member comprises an electrophotographic photosensitive member including a support and a photosensitive layer, the electrophotographic photosensitive member including a surface layer containing:
- a polymer of a hole-transportable compound having a chain-polymerizable functional group;
- and a compound represented by the following formula (1):
- in the formula (1), one of R11 and R12 represents a linear alkyl group having 7 or more carbon atoms, and another thereof represents a linear alkyl group having 1 or more and 4 or less carbon atoms.
Dependencies are inferred from the claim text.