Electrophotographic member, process cartridge, and electrophotographic apparatus

Patent metadata

Field	Value
Publication number	US-9964914-B2
Application number	US-201514710579-A
Country	US
Kind code	B2
Filing date	May 12, 2015
Priority date	May 16, 2014
Publication date	May 8, 2018
Grant date	May 8, 2018

Abstract

Provided is an electrophotographic member that has a high excessive charging-suppressing effect under a low-temperature and low-humidity environment, and has high charge-providing performance under a high-temperature and high-humidity environment, and a process cartridge and an electrophotographic apparatus each including the electrophotographic member. The electrophotographic member is an electrophotographic member including an electro-conductive substrate and an electro-conductive resin layer, the electro-conductive resin layer contains a cation and at least one anion selected from the group consisting of anions represented by the following formulae (1) to (5):

where X represents an arbitrary halogen atom, n in the structural formula (4) represents an integer of from 2 to 6, and n in the structural formula (5) represents an integer of 2 or 3.

First claim

What is claimed is:

1. An electrophotographic member, comprising:
an electro-conductive substrate; and
an electro-conductive resin layer, the electro-conductive resin layer containing an ion conducting agent consisting of a cation and an anion according to formula (5),
the cation being a binder resin of the electro-conductive resin layer, wherein a cationic group is bound to the binder resin
(CN) n X 3-n CSO 3 −   (5)

where X represents a halogen atom and n represents an integer of 2 or 3.

2. A process cartridge, which is removably mounted onto a main body of an electrophotographic apparatus, the process cartridge comprising at least one of a charging member, a developer carrying member, and a developer layer thickness regulating member, wherein
at least one of the charging member, the developer carrying member, and the developer layer thickness regulating member comprises the electrophotographic member of claim 1 .

3. An electrophotographic apparatus, comprising:
an electrophotographic photosensitive member; and
at least one of a charging member, a developer carrying member, and a developer layer thickness regulating member, wherein
at least one of the charging member, the developer carrying member, and the developer layer thickness regulating member comprises the electrophotographic member of claim 1 .

4. The electrophotographic member according to claim 1 , wherein the cation is a monovalent cation compound containing a monovalent phosphonium group or a monovalent nitrogen containing heterocyclic group.

5. The electrophotographic member according to claim 4 , wherein the monovalent cationic group is at least one member selected from the group consisting of formulae (6), (7), (10), (11), (12) and (14):

6. The electrophotographic member according to claim 1 , wherein the binder resin has a structure derived from a monovalent cationic compound containing a monovalent phosphonium group or a monovalent nitrogen containing heterocyclic group.

7. The electrophotographic member according to claim 6 , wherein the monovalent cationic group is at least one member selected from the group consisting of formulae (6), (7), (10), (11), (12) and (14):

8. An electrophotographic member, comprising:
an electro-conductive substrate; and
an electro-conductive resin layer, wherein
the electro-conductive resin layer contains a resin, a cation and an anion according to formula (5):
(CN) n X 3-n CSO 3 −   (5)

where X represents a halogen atom and n represents an integer of 2 or 3.

Assignees

• Canon Kk

Inventors

• Arimura Hideya
• Yamada Masaki
• Yamaguchi Sosuke
• Yamauchi Kazuhiro
• Nishioka Satoru

Classifications

• G03G15/1685

  Structure, details of the transfer member, e.g. chemical composition · CPC title

• G03G21/0017 Primary

  Details relating to the internal structure or chemical composition of the blades · CPC title

• B32B27/10

  of paper or cardboard · CPC title

• B32B2255/00

  Coating on the layer surface · CPC title

• G03G15/06

  for developing · CPC title