ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC APPARATUS
First Claim
1. An electrophotographic photosensitive member comprising a support, a charge generation layer provided on the support and a charge transport layer containing a charge transporting material and a resin formed on the charge generation layer, the charge transport layer serving as a surface layer of the electrophotographic photosensitive member, wherein:
- the charge transport layer contains a charge transporting material, a polyester resin A having a repeating structural unit represented by the following formula (1) and a repeating structural unit represented by the following formula (2), and at least one of polyester resin C having a repeating structural unit represented by the following formula (C) and polycarbonate resin D having a structural unit represented by the following formula (D);
the content of a siloxane moiety in the polyester resin A is not less than 10% by mass and not more than 40% by mass relative to the total mass of the polyester resin A; and
the charge transport layer has a matrix-domain structure having a matrix formed of the charge transporting material and at least one of the polyester resin C and the polycarbonate resin D, and a domain formed of the polyester resin A in the matrix,
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Accused Products
Abstract
A charge transport layer serving as a surface layer of an electrophotographic photosensitive member contains a charge transporting material, polyester resin A containing a siloxane moiety and at least one of polyester resin C and polycarbonate resin D. The content of a siloxane moiety in polyester resin A is not less than 10% by mass and not more than 40% by mass relative to the total mass of polyester resin A. The charge transport layer has a matrix-domain structure having a matrix formed of the charge transporting material and at least one of polyester resin C and polycarbonate resin D and a domain formed of polyester resin A in the matrix.
29 Citations
9 Claims
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1. An electrophotographic photosensitive member comprising a support, a charge generation layer provided on the support and a charge transport layer containing a charge transporting material and a resin formed on the charge generation layer, the charge transport layer serving as a surface layer of the electrophotographic photosensitive member, wherein:
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the charge transport layer contains a charge transporting material, a polyester resin A having a repeating structural unit represented by the following formula (1) and a repeating structural unit represented by the following formula (2), and at least one of polyester resin C having a repeating structural unit represented by the following formula (C) and polycarbonate resin D having a structural unit represented by the following formula (D); the content of a siloxane moiety in the polyester resin A is not less than 10% by mass and not more than 40% by mass relative to the total mass of the polyester resin A; and the charge transport layer has a matrix-domain structure having a matrix formed of the charge transporting material and at least one of the polyester resin C and the polycarbonate resin D, and a domain formed of the polyester resin A in the matrix, - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification