Electrophotographic member, process cartridge and electrophotographic image forming apparatus

Patent metadata

Field	Value
Publication number	US-9977353-B2
Application number	US-201514709155-A
Country	US
Kind code	B2
Filing date	May 11, 2015
Priority date	May 15, 2014
Publication date	May 22, 2018
Grant date	May 22, 2018

Abstract

The present invention provides an electrophotographic electro-conductive member containing an ion-exchange group structure in an electro-conductive layer, whereby the bleeding of an ionic conductive agent to the surface of the electro-conductive layer is suppressed and reduction in electro-conductivity caused by electrification is low. For this purpose, the electrophotographic member of the present invention is an electrophotographic member having an electro-conductive mandrel and an electro-conductive layer, wherein the electro-conductive layer contains a resin having any one or more of partial structures represented by the specific formulas (1) to (7) in the molecule, and an anion.

First claim

What is claimed is:

1. An electrophotographic member comprising an electro-conductive mandrel and an electro-conductive layer, wherein
the electro-conductive layer comprises an anion and a polymeric binder resin having at least one partial structure selected from the group consisting of partial structures represented by formulae (1) to (7) in a molecule of the polymeric binder resin:

wherein R 101 represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, R 102 represents C m H 2m (wherein m is 2 to 16) or (C 2 H 4 O) 1 C 2 H 4 (wherein 1 is 1 to 8), and A represents the following structural formula:

wherein R 103 to R 109 each independently represent an alkyl group having 1 to 18 carbon atoms, n represents 1 or 2, and B′ represents a methylene group or an oxygen atom;

wherein R 201 and R 202 each independently represent a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, R 203 and R 204 each independently represent C m H 2m (wherein m is 2 to 16) or (C 2 H 4 O) 1 C 2 H 4 (wherein 1 is 1 to 8), and C′ represents the following structural formula:

wherein R 205 and R 206 each independently represent an alkyl group having 1 to 18 carbon atoms, n represents 1 or 2, and D represents a methylene group or an oxygen atom;

wherein R 301 to R 303 each independently represent a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, R 304 to R 306 each independently represent C m H 2m (wherein m is 2 to 16) or (C 2 H 4 O) L C 2 H 4 (wherein 1 is 1 to 8), and R 307 represents an alkyl group having 1 to 18 carbon atoms;

wherein R 401 to R 404 each independently represent a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, and R 405 to R 408 each independently represent C m H 2m (wherein m is 2 to 16) or (C 2 H 4 O) 1 C 2 H 4 (wherein 1 is 1 to 8);

wherein R 501 and R 502 each independently represent a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, R 503 to R 505 each independently represent C m H 2m (wherein m is 2 to 16) or (C 2 H 4 O) L C 2 H 4 (wherein 1 is 1 to 8), G represents a nitrogen atom or a methine group, and F′ represents the following structural formula:

wherein R 506 to R 512 each independently represent an alkyl group having 1 to 18 carbon atoms, n represents 1 or 2, and H′ represents a methylene group or an oxygen atom;

wherein R 601 to R 603 each independently represent a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, R 604 to R 607 each independently represent C m H 2m (wherein m is 2 to 16) or (C 2 H 4 O) 1 C 2 H 4 (wherein 1 is 1 to 8), I′ represents a nitrogen cation or a carbon atom, and J represents the following structural formula:

wherein R 608 to R 614 each independently represent an alkyl group having 1 to 18 carbon atoms, n represents 1 or 2, and K′ represents a methylene group or an oxygen atom; and

wherein R 701 to R 704 each independently represent a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, R 705 to R 710 each independently represent C m H 2m (wherein m is 2 to 16) or (C 2 H 4 O) 1 C 2 H 4 (wherein 1 is 1 to 8), L and L′ each represent a nitrogen atom or a methine group, and M represents the following structural formula:

wherein R 711 and R 712 each independently represent an alkyl group having 1 to 16 carbon atoms, n represents 1 or 2, and P′ represents a methylene group or an oxygen atom.

2. The electrophotographic member according to claim 1 , wherein the partial structure represented by formulae (1) to (7) is bonded to a molecular chain of the polymeric binder resin via a structure represented by formulae (8) or (9):

wherein Q and R each independently represent any of the structures of formulae (1) to (7).

3. The electrophotographic member according to claim 1 , wherein the polymeric binder resin has an alkylene oxide structure.

4. The electrophotographic member according to claim 1 , wherein anion in the electro-conductive layer comprises a perfluorosulfonylimide anion.

Assignees

• Canon Kk

Inventors

• Nishioka Satoru
• Yamauchi Kazuhiro
• Yamada Masaki
• Yamaguchi Sosuke
• Shintou Taichi

Classifications

• G03G5/0567

  Other polycondensates comprising oxygen atoms in the main chain; Phenol resins · CPC title

• G03G15/0806

  on a donor element, e.g. belt, roller (complete developer unit G03G15/0896) · CPC title

• G03G5/0575

  Other polycondensates comprising nitrogen atoms with or without oxygen atoms in the main chain · CPC title

• G03G15/0216 Primary

  by bringing a charging member into contact with the member to be charged, e.g. roller, brush chargers · CPC title

• G03G5/043 Primary

  Photoconductive layers characterised by having two or more layers or characterised by their composite structure · CPC title