Electrophotographic photosensitive member, and electrophotographic apparatus, device unit and facsimile machine having the photosensitive member

An electrophotographic apparatus comprising an electrophotographic photosensitive member, an electrostatic latent image forming means, a means for developing the electrostatic latent image formed, and a means for transferring the developed image to a transfer medium;

• said electrophotographic photosensitive member comprising a conductive support and a photosensitive layer provided thereon, wherein the surface layer of said electrophotographic photosensitive member contains a polymer having a component unit represented by the following Formula (1) and a polymer having a component unit represented by the following Formula (2) and a component unit represented by the following Formula (3) ##STR72## wherein A is a straight-chain, branched or cyclic alkylidene group having 1 to 15 carbon atoms, an aryl-substituted alkylidene group, an arylenedialkylidene group, or --O--, --S--, --CO--, --SO-- or --SO.sub.2 --;
• and R.sub.11 to R.sub.18 each is a hydrogen atom, a halogen atom, an alkyl group having 1 to 4 carbon atoms, an alkenyl group having 2 to 4 carbons, or an aryl group ##STR73## wherein B is a straight-chain, branched or cyclic alkylidene group having 1 to 10 carbon atoms, an aryl-substituted alkylidene group, an arylenedialkylidene group, or --O--, --S--, --CO--, --SO-- or --SO.sub.2 --;
• and R.sub.21 to R.sub.28 each is a hydrogen atom, a halogen atom, an alkyl group having 1 to 4 carbon atoms or an alkenyl group having 2 to 4 carbons ##STR74## wherein R.sub.31 is an alkylene group or alkylidene group having 2 to 6 carbon atoms;
• R.sub.32 to R.sub.35 each is an alkyl group having 1 to 3 carbon atoms, a phenyl group or a substituted phenyl group;
• and n represents an integer of 1 to 200.

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 a conductive support and a photosensitive layer provided thereon, wherein the surface layer of said electrophotographic photosensitive member contains a polymer having a component unit represented by the following Formula (1) and a polymer having a component unit represented by the following Formula (2) and a component unit represented by the following Formula (3) ##STR75## wherein A is a straight-chain, branched or cyclic alkylidene group having 1 to 15 carbon atoms, an aryl-substituted alkylidene group, an arylenedialkylidene group, or --O--, --S--, --CO--, --SO-- or --SO.sub.2 --;
• and R.sub.11 to R.sub.18 each is a hydrogen atom, a halogen atom, an alkyl group having 1 to 4 carbon atoms, an alkenyl group having 2 to 4 carbons or an aryl group ##STR76## wherein B is a straight-chain, branched or cyclic alkylidene group having 1 to 10 carbon atoms, an aryl-substituted alkylidene group, an arylenedialkylidene group, or --O--, --S--, --CO--, --SO-- or --SO.sub.2 --;
• and R.sub.21 to R.sub.28 each is a hydrogen atom, a halogen atom, an alkyl group having 1 to 4 carbon atoms or an alkenyl group having 2 to 4 carbons ##STR77## wherein R.sub.31 is an alkylene group or alkylidene group having 2 to 6 carbon atoms;
• R.sub.32 to R.sub.35 each is an alkyl group having 1 to 3 carbon atoms, a phenyl group or a substituted phenyl group;
• and n represents an integer of 1 to 200;
• and
• said device unit holding as one unit said electrophoto-graphic photosensitive member and at least one means selected from the group consisting of the charging means, the developing means and the cleaning means, and said unit being detachably provided in the body of an electrophotographic apparatus.

A facsimile machine comprising an electrophotographic apparatus and a receiver means for receiving image information from a remote terminal;

• said electrophotographic apparatus comprising an electrophotographic photosensitive member;
• and
• said electrophotographic photosensitive member comprising a conductive support and a photosensitive layer provided thereon, wherein the surface layer of said electrophotographic photosensitive member contains a polymer having a component unit represented by the following Formula (1) and a polymer having a component unit represented by the following Formula (2) and a component unit represented by the following Formula (3) ##STR78## wherein A is a straight-chain, branched or cyclic alkylidene group having 1 to 15 carbon atoms, an aryl-substituted alkylidene group, an arylenedialkylidene group, or --O--, --S--, --CO--, --SO-- or --SO.sub.2 --;
• and R.sub.11 to R.sub.18 each is a hydrogen atom, a halogen atom, an alkyl group having 1 to 4 carbon atoms, an alkenyl group having 2 to 4 carbons, or an aryl group ##STR79## wherein B is a straight-chain, branched or cyclic alkylidene group having 1 to 10 carbon atoms, an aryl-substituted alkylidene group, an arylenedialkylidene group, or --O--, --S--, --CO--, --SO-- or --SO.sub.2 --;
• and R.sub.21 to R.sub.28 each is a hydrogen atom, a halogen atom, an alkyl group having 1 to 4 carbon atoms or an alkenyl group having 2 to 4 carbons ##STR80## wherein R.sub.31 is an alkylene group or alkylidene group having 2 to 6 carbon atoms;
• R.sub.32 to R.sub.35 each is an alkyl group having 1 to 3 carbon atoms, a phenyl group or a substituted phenyl group;
• and n represents an integer of 1 to 200.