Electrophotographic photosensitive material
First Claim
1. An electrophotographic photosensitive member comprising, in sequence:
- (a) an electroconductive support; and
(b) a photosensitive layer wherein an outer surface of said photosensitive member contains a binder resin, a silicon denatured polycarbonate copolymer present in amounts from 1 to 30% by weight based on the weight of said binder resin and a silicon-containing graft polymer present in amounts from 0.02 to 10% by weight based on the weight of solids in the outer surface, wherein said silicon denatured polycarbonate copolymer has a structure of the following formula (I);
##STR24## wherein A is a straight chain, branched chain or cyclic alkylidene group, an aryl-substituted alkylene group, a substituted or unsubstituted arylene group, --O--, --S--, --SO--, --SO2 --, or --CO--, R1 to R16 are hydrogen atoms, halogen atoms, substituted or unsubstituted alkyl groups, or substituted or unsubstituted aryl groups, R17 to R20 are substituted or unsubstituted alkyl groups or substituted or unsubstituted phenyl groups, l, m and n are integers larger than 1, and the sum of X and Y is 100 wherein X;
Y is from 99.5;
0.5 to 10;
90 and wherein said silicon-containing graft polymer includes, as a component thereof, a polymerizable monomer incorporating a side chain having a silicon atom.
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Abstract
An electrophotographic photosensitive member according to the present invention includes: a photosensitive layer formed on an electroconductive support member thereof, wherein a surface layer of the photosensitive member contains a silicon denatured polycarbonate copolymer and a silicon-type graft polymer. An electrophotographic photosensitive apparatus according to the present invention includes: an electrophotographic photosensitive member, the surface layer of which contains a silicon denatured polycarbonate copolymer and a silicon-type graft polymer; a latent image forming unit for forming an electrostatic latent image on the electrophotographic photosensitive member; a developing unit for forming a toner image by developing the electrophotographic photosensitive member, on which the electrostatic image has been formed, with a toner; and, optimally, a cleaning unit for cleaning the electrophotographic photosensitive member.
10 Citations
7 Claims
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1. An electrophotographic photosensitive member comprising, in sequence:
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(a) an electroconductive support; and (b) a photosensitive layer wherein an outer surface of said photosensitive member contains a binder resin, a silicon denatured polycarbonate copolymer present in amounts from 1 to 30% by weight based on the weight of said binder resin and a silicon-containing graft polymer present in amounts from 0.02 to 10% by weight based on the weight of solids in the outer surface, wherein said silicon denatured polycarbonate copolymer has a structure of the following formula (I);
##STR24## wherein A is a straight chain, branched chain or cyclic alkylidene group, an aryl-substituted alkylene group, a substituted or unsubstituted arylene group, --O--, --S--, --SO--, --SO2 --, or --CO--, R1 to R16 are hydrogen atoms, halogen atoms, substituted or unsubstituted alkyl groups, or substituted or unsubstituted aryl groups, R17 to R20 are substituted or unsubstituted alkyl groups or substituted or unsubstituted phenyl groups, l, m and n are integers larger than 1, and the sum of X and Y is 100 wherein X;
Y is from 99.5;
0.5 to 10;
90 and wherein said silicon-containing graft polymer includes, as a component thereof, a polymerizable monomer incorporating a side chain having a silicon atom. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An electrophotographic photosensitive member according to claim 8, wherein said polycarbonate polymer has a structure of the following formula:
- ##STR26##
Specification