Process cartridge and electrophotographic apparatus
First Claim
Patent Images
1. A process cartridge, comprising:
- a charging member; and
an electrophotographic photosensitive member configured to be charged by being in contact with the charging member, said electrophotographic photosensitive member comprising a support and a photosensitive layer in this order,the charging member having an electroconductive substrate and a conductive elastic layer as a surface layer,the elastic layer containing a binder and a bowl-shaped resin particle having an opening, the opening being exposed on a surface of the charging member,a surface of the elastic layer comprising a concave portion derived from the opening and a convex portion derived from an edge of the opening, whereina surface layer of the electrophotographic photosensitive member contains a charge transport material and a polycarbonate resin having structures represented by formulae (I) and (II), where formula (I) is
1 Assignment
0 Petitions
Accused Products
Abstract
Provided is a process cartridge having a charging member and an electrophotographic photosensitive member to be charged by being in contact with the charging member, wherein the electrophotographic photosensitive member has a support and a photosensitive layer in this order, and a surface layer of the electrophotographic photosensitive member has a Martens hardness of 230 N/mm2 or less.
88 Citations
14 Claims
-
1. A process cartridge, comprising:
-
a charging member; and an electrophotographic photosensitive member configured to be charged by being in contact with the charging member, said electrophotographic photosensitive member comprising a support and a photosensitive layer in this order, the charging member having an electroconductive substrate and a conductive elastic layer as a surface layer, the elastic layer containing a binder and a bowl-shaped resin particle having an opening, the opening being exposed on a surface of the charging member, a surface of the elastic layer comprising a concave portion derived from the opening and a convex portion derived from an edge of the opening, wherein a surface layer of the electrophotographic photosensitive member contains a charge transport material and a polycarbonate resin having structures represented by formulae (I) and (II), where formula (I) is - View Dependent Claims (3, 4, 5, 6, 7)
-
-
2. A process cartridge, comprising:
-
a charging member; and an electrophotographic photosensitive member configured to be charged by being in contact with the charging member, the electrophotographic photosensitive member comprising a support and a photosensitive layer in this order, the charging member having an electroconductive substrate and a conductive elastic layer as a surface layer, a surface of the elastic layer containing an insulating hollow particle and an insulating binder, the hollow particle forming a convex portion exposed on the surface of the elastic layer, the hollow particle having a recess at the apex part of the convex portion, wherein a surface layer of the electrophotographic photosensitive member contains a charge transport material and a polycarbonate resin having structures represented by formulae (I) and (II), where formula (I) is - View Dependent Claims (9, 10, 11, 12, 13)
-
-
8. An electrophotographic apparatus, comprising:
-
at least one of a charging unit and an exposing unit; and a process cartridge, the process cartridge comprising a charging member and an electrophotographic photosensitive member configured to be charged by being in contact with the charging member, the electrophotographic photosensitive member comprising a support and a photosensitive layer in this order, the charging member having an electroconductive substrate, and a conductive elastic layer as a surface layer, the elastic layer containing a binder and a bowl-shaped resin particle having an opening, the opening being exposed on a surface of the charging member, a surface of the elastic layer comprising a concave portion derived from the opening and a convex portion derived from an edge of the opening, wherein a surface layer of the electrophotographic photosensitive member contains a charge transport material and a polycarbonate resin having structures represented by formulae (I) and (II), where formula (I) is
-
-
14. An electrophotographic apparatus, comprising:
-
at least one of a charging unit and an exposing unit; and a process cartridge, the process cartridge comprising a charging member and an electrophotographic photosensitive member configured to be charged by being in contact with the charging member, the electrophotographic photosensitive member comprising a support and a photosensitive layer in this order, the charging member having an electroconductive substrate, and a conductive elastic layer as a surface layer, a surface of the elastic layer containing an insulating hollow particle and an insulating binder, the hollow particle forming a convex portion exposed on the surface of the elastic layer, the hollow particle having a recess at the apex part of the convex portion, wherein a surface layer of the electrophotographic photosensitive member contains a charge transport material and a polycarbonate resin having structures represented by formulae (I) and (II), where formula (I) is
-
Specification