Electrophotographic photosensitive member, and electrophotographic apparatus and device unit employing the same
First Claim
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1. An electrophotographic photosensitive member comprising an electroconductive support and a photosensitive layer formed thereon:
- the surface layer of the electrophotographic photosensitive member containing a first copolymer having a first construction unit represented by Formula (1) and a second construction unit represented by Formula (2), and a second copolymer having a third construction unit represented by Formula (3) and a fourth construction unit represented by Formula (4);
##STR45## wherein A is a group of alkylidene, arylene, arylenedialkylidene, --O--, --S--, --CO--, --SO--, or --SO2 --, and R1-1 to R1-8 are independently a hydrogen atom, an alkyl group, an aryl group, or a halogen atom;
##STR46## wherein R2-1 is an alkylene group or an alkylidene group, and R2-2 to R2-5 are independently a hydrogen atom, an alkyl group, or an aryl group, and n is an integer of 1 to 200;
##STR47## wherein R3-1 to R3-8 are independently a hydrogen atom, an alkyl group, an aryl group, or a halogen atom;
##STR48## wherein B is an alkylidene group, an arylene group, and an arylenedialkylidene group, and R4-1 to R4-8 are independently a hydrogen atom, an alkyl group, an aryl group, or a halogen atom.
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Abstract
The present invention relates to an electrophotographic photosensitive member comprising an electroconductive support and a photosensitive layer formed thereon: the surface layer of the electrophotographic photosensitive member containing a first copolymer of a first construction unit represented by Formula (1) and a second construction unit represented by Formula (2), and a second copolymer of a third construction unit represented by Formula (3) and a fourth construction unit represented by Formula (4): ##STR1##
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12 Claims
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1. An electrophotographic photosensitive member comprising an electroconductive support and a photosensitive layer formed thereon:
- the surface layer of the electrophotographic photosensitive member containing a first copolymer having a first construction unit represented by Formula (1) and a second construction unit represented by Formula (2), and a second copolymer having a third construction unit represented by Formula (3) and a fourth construction unit represented by Formula (4);
##STR45## wherein A is a group of alkylidene, arylene, arylenedialkylidene, --O--, --S--, --CO--, --SO--, or --SO2 --, and R1-1 to R1-8 are independently a hydrogen atom, an alkyl group, an aryl group, or a halogen atom;
##STR46## wherein R2-1 is an alkylene group or an alkylidene group, and R2-2 to R2-5 are independently a hydrogen atom, an alkyl group, or an aryl group, and n is an integer of 1 to 200;
##STR47## wherein R3-1 to R3-8 are independently a hydrogen atom, an alkyl group, an aryl group, or a halogen atom;
##STR48## wherein B is an alkylidene group, an arylene group, and an arylenedialkylidene group, and R4-1 to R4-8 are independently a hydrogen atom, an alkyl group, an aryl group, or a halogen atom. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
- the surface layer of the electrophotographic photosensitive member containing a first copolymer having a first construction unit represented by Formula (1) and a second construction unit represented by Formula (2), and a second copolymer having a third construction unit represented by Formula (3) and a fourth construction unit represented by Formula (4);
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11. An electrophotographic apparatus, comprising an electrophotographic photosensitive member, an image-forming means for forming an electrostatic latent image, a developing means for developing the formed latent image, and a transferring means for transferring the developed image to an image-receiving material;
- said electrophotographic photosensitive member comprising an electroconductive support and a photosensitive layer formed thereon;
the surface layer of the electrophotographic photosensitive member containing a first copolymer having a first construction unit represented by Formula (1) and a second construction unit represented by Formula (2), and a second copolymer having a third construction unit represented by Formula (3) and a fourth construction unit represented by Formula (4);
##STR50## wherein A is a group of alkylidene, arylene, arylenedialkylidene, --O--, --S--, --CO--, --SO--, or --SO2 --, and R1-1 to R1-8 are independently a hydrogen atom, an alkyl group, an aryl group, or a halogen atom;
##STR51## wherein R2-1 is an alkylene group or an alkylidene group, and R2-2 to R2-5 are independently a hydrogen atom, an alkyl group, or an aryl group, and n is an integer of 1 to 200;
##STR52## wherein R3-1 to R3-8 are independently a hydrogen atom, an alkyl group, an aryl group, or a halogen atom;
##STR53## wherein B is an alkylidene group, an arylene group, and an arylenedialkylidene group, and R4-1 to R4-8 are independently a hydrogen atom, an alkyl group, an aryl group, or a halogen atom.
- said electrophotographic photosensitive member comprising an electroconductive support and a photosensitive layer formed thereon;
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12. A device unit, comprising an electrophotographic photosensitive member, and at least one means selected from the group consisting of a charging means, a developing means, and a cleaning means;
- said electrophotographic photosensitive member comprising an electroconductive support and a photosensitive layer formed thereon;
the surface layer of the electrophotographic photosensitive member containing a first copolymer having a first construction unit represented by Formula (1) and a second construction unit represented by Formula (2), and a second copolymer having a third construction unit represented by Formula (3) and a fourth construction unit represented by Formula (4);
##STR54## wherein A is a group of alkylidene, arylene, arylenedialkylidene, --O--, --S--, --CO--, --SO--, or --SO2 --, and R1-1 to R1-8 are independently a hydrogen atom, an alkyl group, an aryl group, or a halogen atom;
##STR55## wherein R2-1 is an alkylene group or an alkylidiene group, and R2-2 to R2-5 are independently a hydrogen atom, an alkyl group, or an aryl group, and n is an integer of 1 to 200;
##STR56## wherein R3-1 to R3-8 are independently a hydrogen atom, an alkyl group, an aryl group or a halogen atom;
##STR57## wherein B is an alkylidene group, an arylene group, and an arylenedialkylidene group, and R4-1 to R4-8 are independently a hydrogen atom, an alkyl group, an aryl group, or a halogen atom; and
said unit supporting integrally the electrophotographic photosensitive member and said at least one of the charging means, the developing means, and the cleaning means, and being removable from the main body of an electrophotographic apparatus.
- said electrophotographic photosensitive member comprising an electroconductive support and a photosensitive layer formed thereon;
Specification