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 provided on the charge generation layer, the charge transport layer being a surface layer of the electrophotographic photosensitive member, whereinthe 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 a polyester resin C having a repeating structural unit represented by the following formula (C) and a polycarbonate resin D having a repeating structural unit represented by the following formula (D);
the polyester resin A contains a siloxane moiety in an amount of from 5% by mass or more to 30% by mass or less based on the total mass of the polyester resin A; and
the charge transport layer has a matrix-domain structure comprising a matrix made of the charge transporting material and at least one of the polyester resin C and the polycarbonate resin D, and a domain made of the polyester resin A and formed in the matrix;
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Abstract
A charge transport layer, which is the surface layer of an electrophotographic photosensitive member, contains a charge transporting material, and a polyester resin A having a repeating structural unit including a specific siloxane moiety and at least one of a polyester resin C having a specific structure and a polycarbonate resin D having a specific structure as a binder resin. The content of the siloxane moiety in the polyester resin A is from 5% by mass or more to 30% by mass or less based on the total mass of the polyester resin A. The charge transport layer includes a domain made of the polyester resin A in a matrix made of the charge transporting material and at least one of the polyester resin C and the polycarbonate resin D.
35 Citations
5 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 provided on the charge generation layer, the charge transport layer being 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 a polyester resin C having a repeating structural unit represented by the following formula (C) and a polycarbonate resin D having a repeating structural unit represented by the following formula (D); the polyester resin A contains a siloxane moiety in an amount of from 5% by mass or more to 30% by mass or less based on the total mass of the polyester resin A; and the charge transport layer has a matrix-domain structure comprising a matrix made of the charge transporting material and at least one of the polyester resin C and the polycarbonate resin D, and a domain made of the polyester resin A and formed in the matrix; - View Dependent Claims (2, 3, 4, 5)
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Specification