ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, ELECTROPHOTOGRAPHIC APPARATUS AND METHOD OF MANUFACTURING THE ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER
First Claim
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1. An electrophotographic photosensitive member, comprising:
- a support,a charge-generating layer which is provided on the support and comprises a charge-generating substance, anda charge-transporting layer which is provided on the charge-generating layer and is a surface layer of the electrophotographic photosensitive member;
wherein the charge-transporting layer has a matrix-domain structure having;
a domain which comprises the constituent α
, anda matrix which comprises the constituent β and
a charge-transporting substance;
wherein the constituent α
is a polycarbonate resin A having a repeating structural unit represented by the following formula (A), a repeating structural unit represented by the following formula (B) and a repeating structural unit represented by the following formula (C),the content of a siloxane moiety in the polycarbonate resin A is not less than 5% by mass and not more than 40% by mass relative to the total mass of the polycarbonate resin A, the content of the repeating the structural unit represented by the formula (B) is not less than 10% by mass and not more than 30% by mass relative to the total mass of the polycarbonate resin A, and the content of the repeating the structural unit represented by the formula (C) is not less than 25% by mass and less than 85% by mass relative to the total mass of the polycarbonate resin A;
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Abstract
A charge-transporting layer, which is a surface layer of an electrophotographic photosensitive member, has a matrix-domain structure having a matrix containing constituent β (a polyester resin having a predetermined repeating structural unit) and a charge-transporting substance, and a domain containing constituent α (a polycarbonate resin having a repeating structural unit having a predetermined siloxane moiety).
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5 Claims
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1. An electrophotographic photosensitive member, comprising:
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a support, a charge-generating layer which is provided on the support and comprises a charge-generating substance, and a charge-transporting layer which is provided on the charge-generating layer and is a surface layer of the electrophotographic photosensitive member; wherein the charge-transporting layer has a matrix-domain structure having; a domain which comprises the constituent α
, anda matrix which comprises the constituent β and
a charge-transporting substance;wherein the constituent α
is a polycarbonate resin A having a repeating structural unit represented by the following formula (A), a repeating structural unit represented by the following formula (B) and a repeating structural unit represented by the following formula (C),the content of a siloxane moiety in the polycarbonate resin A is not less than 5% by mass and not more than 40% by mass relative to the total mass of the polycarbonate resin A, the content of the repeating the structural unit represented by the formula (B) is not less than 10% by mass and not more than 30% by mass relative to the total mass of the polycarbonate resin A, and the content of the repeating the structural unit represented by the formula (C) is not less than 25% by mass and less than 85% by mass relative to the total mass of the polycarbonate resin A; - View Dependent Claims (2, 3, 4, 5)
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Specification