Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus
AssigneeCanon Kabushiki Kaisha
InventorsHideharu Shimozawa, Tsutomu Nishida, Atsushi Okuda, Yuka Ishiduka, Kenichi Kaku, Nobuhiro Nakamura, Hiroyuki Watanabe
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Abstract
The present disclosure provides an electrophotographic photosensitive member that suppresses electric potential fluctuations in repeated use. The electrophotographic photosensitive member includes a support, a photosensitive layer and a protective layer, in this order, wherein the photosensitive layer includes a compound having a structure represented by formula (1), and the protective layer includes a resin having a structure represented by formula (2) and a structure represented by formula (3).
Claims8
An electrophotographic photosensitive member, comprising:
- a support, a photosensitive layer and a protective layer, in this order;
- the photosensitive layer comprising a compound represented by formula (1)
- where R1 to R10 independently represent a hydrogen atom or a methyl group;
- and
- the protective layer being a cured film that is a polymerized product of a composition comprising radical polymerizable compounds consisting of a compound represented by formula (4) and a compound represented by formula (5)
- where R31 to R34 and R41 to R45 independently represent a hydrogen atom, a methyl group or an ethyl group, m is 2 to 5 and n is 2 to 5, wherein
- the only radical polymerizable compounds in the composition are the compound represented by formula (4) and the compound represented by formula (5).
A process cartridge that is detachably attachable to a main body of an electrophotographic image forming apparatus, the process cartridge comprising:
- an electrophotographic photosensitive member comprising a support, a photosensitive layer and a protective layer in this order;
- and
- at least one member selected from the group consisting of a charging member, a developing member and a cleaning member;
- the photosensitive layer comprising a compound represented by formula (1)
- where R1 to R10 independently represent a hydrogen atom or a methyl group;
- and
- the protective layer being a cured film that is a polymerized product of a composition comprising radical polymerizable compounds consisting of a compound represented by formula (4) and a compound represented by formula (5)
- where R31 to R34 and R41 to R45 independently represent a hydrogen atom, a methyl group or an ethyl group, m is 2 to 5, and n is 2 to 5, wherein
- the only radical polymerizable compounds in the composition are the compound represented by formula (4) and the compound represented by formula (5).
An electrophotographic apparatus, comprising:
- an electrophotographic photosensitive member, a charging apparatus, an exposure apparatus and a developing apparatus;
- the electrophotographic photosensitive member comprising a support, a photosensitive layer and a protective layer in this order;
- the photosensitive layer comprising a compound represented by formula (1)
- where R1 to R10 independently represent a hydrogen atom or a methyl group;
- and
- the protective layer being a cured film that is a polymerized product of a composition comprising radical polymerizable compounds consisting of a compound represented by formula (4) and a compound represented by formula (5)
- where R31 to R34 and R41 to R45 independently represent a hydrogen atom, a methyl group or an ethyl group, m is 2 to 5 and n is 2 to 5, wherein
- the only radical polymerizable compounds in the composition are the compound represented by formula (4) and the compound represented by formula (5).
Dependencies are inferred from the claim text.