Electrophotographic photoreceptor
First Claim
1. An electrophotographic photoreceptor having a photosensitive layer containing a binder resin on an electroconductive substrate, wherein at least a part of the binder resin in the photosensitive layer is a polycarbonate resin having a structure of the following formula (1) as main repeating units and a structure of the following formula (2) at one or each terminal and having a viscosity-average molecular weight of from 10,000 to 300,000:
- ##STR14## where, in the formula (1), each of Y1 to Y8 which are independent of one another, is a hydrogen atom, a C1-10 saturated aliphatic hydrocarbon group, a C3-10 unsaturated aliphatic hydrocarbon group, a halogen atom, a halogenated alkyl group, a C1-10 alkoxy group or a C6-20 aromatic hydrocarbon group which may be substituted, X1 is ##STR15## an aromatic ring, a single bond, a lactone or fluorene, each of R1 to R7 which are independent of one another, is a hydrogen atom, a C1-10 saturated aliphatic hydrocarbon group which may have a substituent, a C3-10 unsaturated aliphatic hydrocarbon group which may have a substituent, a halogen atom, an alkoxy group or a C6-20 aromatic hydrocarbon group which may have a substituent, Z is a C3-20 substituted or unsubstituted aliphatic hydrocarbon group, a is an integer of from 0 to 4, l is an integer of from 1 to 6, and m is an integer of from 2 to 20, and, in the formula (2), R13 is an aliphatic and/or aromatic bivalent organic residue, W is a single bond, O, CO, COO, NH, NHCO, S, SO or SO2, each of R8 to R12 which are independent of one another, is a C1-10 saturated aliphatic hydrocarbon group which may have a substituent or a C6-20 aromatic hydrocarbon group which may have a substituent, and n is an integer of from 1 to 500.
3 Assignments
0 Petitions
Accused Products
Abstract
An electrophotographic photoreceptor having a photosensitive layer containing a binder resin on an electroconductive substrate, wherein at least a part of the binder resin in the photosensitive layer is a polycarbonate resin having a structure of the following formula (1) as main repeating units and a structure of the following formula (2) at one or each terminal and having a viscosity-average molecular weight of from 10,000 to 300,000: ##STR1## where, in the formula (1), each of Y1 to Y8 which are independent of one another, is a hydrogen atom, a C1-10 saturated aliphatic hydrocarbon group, a C3-10 unsaturated aliphatic hydrocarbon group, a halogen atom, a halogenated alkyl group, a C1-10 alkoxy group or a C6-20 aromatic hydrocarbon group which may be substituted, X1 is ##STR2## an aromatic ring, a single bond, a lactone or fluorene, each of R1 to R7 which are independent of one another, is a hydrogen atom, a C1-10 saturated aliphatic hydrocarbon group which may have a substituent, a C3-10 unsaturated aliphatic hydrocarbon group which may have a substituent, a halogen atom, an alkoxy group or a C6-20 aromatic hydrocarbon group which may have a substituent, Z is a C3-20 substituted or unsubstituted aliphatic hydrocarbon group, a is an integer of from 0 to 4, l is an integer of from 1 to 6, and m is an integer of from 2 to 20, and, in the formula (2), R13 is an aliphatic and/or aromatic bivalent organic residue, W is a single bond, O, CO, COO, NH, NHCO, S, SO or SO2, each of R8 to R12 which are independent of one another, is a C1-10 saturated aliphatic hydrocarbon group which may have a substituent or a C6-20 aromatic hydrocarbon group which may have a substituent, and n is an integer of from 1 to 500.
19 Citations
11 Claims
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1. An electrophotographic photoreceptor having a photosensitive layer containing a binder resin on an electroconductive substrate, wherein at least a part of the binder resin in the photosensitive layer is a polycarbonate resin having a structure of the following formula (1) as main repeating units and a structure of the following formula (2) at one or each terminal and having a viscosity-average molecular weight of from 10,000 to 300,000:
- ##STR14## where, in the formula (1), each of Y1 to Y8 which are independent of one another, is a hydrogen atom, a C1-10 saturated aliphatic hydrocarbon group, a C3-10 unsaturated aliphatic hydrocarbon group, a halogen atom, a halogenated alkyl group, a C1-10 alkoxy group or a C6-20 aromatic hydrocarbon group which may be substituted, X1 is ##STR15## an aromatic ring, a single bond, a lactone or fluorene, each of R1 to R7 which are independent of one another, is a hydrogen atom, a C1-10 saturated aliphatic hydrocarbon group which may have a substituent, a C3-10 unsaturated aliphatic hydrocarbon group which may have a substituent, a halogen atom, an alkoxy group or a C6-20 aromatic hydrocarbon group which may have a substituent, Z is a C3-20 substituted or unsubstituted aliphatic hydrocarbon group, a is an integer of from 0 to 4, l is an integer of from 1 to 6, and m is an integer of from 2 to 20, and, in the formula (2), R13 is an aliphatic and/or aromatic bivalent organic residue, W is a single bond, O, CO, COO, NH, NHCO, S, SO or SO2, each of R8 to R12 which are independent of one another, is a C1-10 saturated aliphatic hydrocarbon group which may have a substituent or a C6-20 aromatic hydrocarbon group which may have a substituent, and n is an integer of from 1 to 500.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
Specification