Electrophotographic photosensitive member, and apparatus and process cartridge provided with the same
First Claim
1. An electrophotographic photosensitive member comprising:
- a substrate and a photosensitive layer formed thereon, a surface layer of the photosensitive layer containing at least one resin selected from the group consisting of (a) a polyarylate resin having a structural unit represented by the following general formula (1) and (b) a polycarbonate resin having a structural unit represented by the following general formula (2);
##STR16## wherein, X1 and X2 are each single bond, --O--, --S-- or substituted or unsubstituted alkylene and are the same or different, R1 to R8 and R11 to R14 are each hydrogen, halogen, or substituted or unsubstituted alkyl or substituted or unsubstituted aryl and are the same or different, and R9 and R10 are each hydrogen, halogen, or substituted or unsubstituted silyl, substituted or unsubstituted alkyl or substituted or unsubstituted aryl and are the same or different, and n is an integer of 2 or more;
##STR17## wherein X3 and X4 are each single bond, --O--, --S-- or substituted or unsubstituted alkylene and are the same or different, R15 to R22 are each hydrogen, halogen, substituted or unsubstituted alkyl or substituted or unsubstituted aryl and are the same or different, R23 and R24 are each hydrogen, halogen, substituted or unsubstituted silyl, substituted or unsubstituted alkyl or substituted or unsubstituted aryl and are the same or different, and m is an integer of 2 or more.
1 Assignment
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Accused Products
Abstract
A surface layer of a photosensitive layer contains at least one resin selected from the group consisting of (a) a polyarylate resin having a structural unit represented by the following general formula (1) and (b) a polycarbonate resin having a structural unit represented by the following general formula (2): ##STR1## wherein, X1 and X2 are each single bond, --O--, --S-- or substituted or unsubstituted alkylene and are the same or different, R1 to R8 and R11 to R14 are each hydrogen, halogen, or substituted or unsubstituted alkyl or aryl and are the same or different, and R9 and R10 are each hydrogen, halogen, or substituted or unsubstituted silyl, alkyl or aryl and are the same or different, and n is an integer of 2 or more; ##STR2## wherein X3 and X4 are each single bond, --O--, --S-- or substituted or unsubstituted alkylene and are the same or different, R15 to R22 are each hydrogen, halogen, substituted or unsubstituted alkyl or aryl and are the same or different, R23 and R24 are each hydrogen, halogen, substituted or unsubstituted silyl, alkyl or aryl and are the same or different, and m is an integer of 2 or more.
14 Citations
21 Claims
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1. An electrophotographic photosensitive member comprising:
- a substrate and a photosensitive layer formed thereon, a surface layer of the photosensitive layer containing at least one resin selected from the group consisting of (a) a polyarylate resin having a structural unit represented by the following general formula (1) and (b) a polycarbonate resin having a structural unit represented by the following general formula (2);
##STR16## wherein, X1 and X2 are each single bond, --O--, --S-- or substituted or unsubstituted alkylene and are the same or different, R1 to R8 and R11 to R14 are each hydrogen, halogen, or substituted or unsubstituted alkyl or substituted or unsubstituted aryl and are the same or different, and R9 and R10 are each hydrogen, halogen, or substituted or unsubstituted silyl, substituted or unsubstituted alkyl or substituted or unsubstituted aryl and are the same or different, and n is an integer of 2 or more;
##STR17## wherein X3 and X4 are each single bond, --O--, --S-- or substituted or unsubstituted alkylene and are the same or different, R15 to R22 are each hydrogen, halogen, substituted or unsubstituted alkyl or substituted or unsubstituted aryl and are the same or different, R23 and R24 are each hydrogen, halogen, substituted or unsubstituted silyl, substituted or unsubstituted alkyl or substituted or unsubstituted aryl and are the same or different, and m is an integer of 2 or more. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
- a substrate and a photosensitive layer formed thereon, a surface layer of the photosensitive layer containing at least one resin selected from the group consisting of (a) a polyarylate resin having a structural unit represented by the following general formula (1) and (b) a polycarbonate resin having a structural unit represented by the following general formula (2);
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14. A process cartridge, 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 and said at least one means being integrally supported and detachable from an electrophotographic apparatus main body, said electrophotographic photosensitive member comprising;
a substrate and a photosensitive layer formed thereon, a surface layer of the photosensitive layer containing at least one resin selected from the group consisting of (a) a polyarylate resin having a structural unit represented by the following general formula (1) and (b) a polycarbonate resin having a structural unit represented by the following general formula (2);
##STR23## wherein, X1 and X2 are each single bond, --O--, --S-- or substituted or unsubstituted alkylene and are the same or different, R1 to R8 and R11 to R14 are each hydrogen, halogen, or substituted or unsubstituted alkyl or substituted or unsubstituted aryl and are the same or different, and R9 and R10 are each hydrogen, halogen, or substituted or unsubstituted silyl, substituted or unsubstituted alkyl or substituted or unsubstituted aryl and are the same or different, and n is an integer of 2 or more;
##STR24## wherein X3 and X4 are each single bond, --O--, --S-- or substituted or unsubstituted alkylene and are the same or different, R15 to R22 are each hydrogen, halogen, substituted or unsubstituted alkyl or substituted or unsubstituted aryl and are the same or different, R23 and R24 are each hydrogen, halogen, substituted or unsubstituted silyl, substituted or unsubstituted alkyl or substituted or unsubstituted aryl and are the same or different, and m is an integer of 2 or more. - View Dependent Claims (15, 16, 17)
- 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 and said at least one means being integrally supported and detachable from an electrophotographic apparatus main body, said electrophotographic photosensitive member comprising;
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18. An electrophotographic apparatus, comprising:
- an electrophotographic photosensitive member, a charging means, an exposure means, a developing means and a cleaning means, said electrophotographic photosensitive member comprising a substrate and a photosensitive layer formed thereon, a surface layer of the photosensitive layer containing at least one resin selected from the group consisting of (a) a polyarylate resin having a structural unit represented by the following general formula (1) and (b) a polycarbonate resin having a structural unit represented by the following general formula (2);
##STR25## wherein, X1 and X2 are each single bond, --O--, --S-- or substituted or unsubstituted alkylene and are the same or different, R1 to R8 and R11 to R14 are each hydrogen, halogen, or substituted or unsubstituted alkyl or substituted or unsubstituted aryl and are the same or different, and R9 and R10 are each hydrogen, halogen, or substituted or unsubstituted silyl, substituted or unsubstituted alkyl or substituted or unsubstituted aryl and are the same or different, and n is an integer of 2 or more;
##STR26## wherein X3 and X4 are each single bond, --O--, --S-- or substituted or unsubstituted alkylene and are the same or different, R15 to R22 are each hydrogen, halogen, substituted or unsubstituted alkyl or substituted or unsubstituted aryl and are the same or different, R23 and R24 are each hydrogen, halogen, substituted or unsubstituted silyl, substituted or unsubstituted alkyl or substituted or unsubstituted aryl and are the same or different, and m is an integer of 2 or more. - View Dependent Claims (19, 20, 21)
- an electrophotographic photosensitive member, a charging means, an exposure means, a developing means and a cleaning means, said electrophotographic photosensitive member comprising a substrate and a photosensitive layer formed thereon, a surface layer of the photosensitive layer containing at least one resin selected from the group consisting of (a) a polyarylate resin having a structural unit represented by the following general formula (1) and (b) a polycarbonate resin having a structural unit represented by the following general formula (2);
Specification