Electroconductive member for electrophotography and quaternary ammonium salt

Patent metadata

Field	Value
Publication number	US-10280148-B2
Application number	US-201515328262-A
Country	US
Kind code	B2
Filing date	Sep 4, 2015
Priority date	Sep 10, 2014
Publication date	May 7, 2019
Grant date	May 7, 2019

Abstract

Provided is an electroconductive member for electrophotography in which movement of a quaternary ammonium salt toward the surface of a binder resin is suppressed and which exhibits a less reduction in electroconductivity through electrification. The electroconductive member for electrophotography comprises an electroconductive shaft core and a resin layer, and the resin layer comprises a binder resin and at least one selected from quaternary ammonium salts having structures represented by the formulae (1) to (8).

First claim

The invention claimed is:

1. An electroconductive member for electrophotography, comprising:
an electroconductive shaft core; and
a resin layer-comprising a binder resin and at least one quaternary ammonium salt having a structure represented by one of formulae (1) to (8):

where n1 represents 2 or 3, X A represents a group having a structure represented by formula (9), and X B represents an electron-donating group or a hydrogen atom;

where R 1 to R 3 independently represent a hydrogen atom or a methyl group, R 4 and R 5 independently represent a methyl group, an ethyl group or a glycidyl group, X − represents an anion, and “a” represents 0 or 1;

where n2 represents 2 or 3, and X C represents a group having a structure represented by formula (10);

where R 6 to R 8 independently represent a hydrogen atom or a methyl group, R 9 and R 10 independently represent a methyl group, an ethyl group or a glycidyl group, X − represents an anion, and “b” represents 0 or 1;

where n3 and n5 independently represent 1 or 2, n4 represents 1 or 2, and X D and X E independently represent a group having a structure represented by formula (11);

where R 11 to R 13 independently represent a hydrogen atom or a methyl group, R 14 and R 15 independently represent a methyl group, an ethyl group or a glycidyl group, X − represents an anion, and “c” represents 0 or 1;

where n6 and n8 independently represent 1 or 2, n7 represents 1 or 2, and X F and X G independently represent a group having a structure represented by formula (12);

where R 16 to R 18 independently represent a hydrogen atom or a methyl group, R 19 and R 20 independently represent a methyl group, an ethyl group or a glycidyl group, X − represents an anion, and “d” represents 0 or 1;

where “e” represents 1 or 2, and X H and X I independently represent a group having a structure represented by formula (13);

where R 21 to R 23 independently represent a hydrogen atom or a methyl group, R 24 and R 25 independently represent a methyl group, an ethyl group or a glycidyl group, X − represents an anion, and “f” represents 2 or 3;

where “g” and “h” independently represent 2 or 3, and X J and X K independently represent a group having a structure represented by formula (14);

where R 26 to R 28 independently represent a hydrogen atom or a methyl group, R 29 represents a methyl group, an ethyl group or a glycidyl group, and X − represents an anion;

where “i”, “j”, and “k” independently represent 2 or 3, and X L and X M independently represent a group having a structure represented by formula (15);

where R 30 to R 32 independently represent a hydrogen atom or a methyl group, and X − represents an anion;

where R 33 to R 35 and R 40 to R 42 independently represent a hydrogen atom or a methyl group, R 36 to R 39 independently represent a methyl group, an ethyl group or a glycidyl group, “1” represents an integer of 2 to 12, and X − represents an anion.

2. An electroconductive member for electrophotography, comprising:
an electroconductive shaft core; and
a resin layer comprising a binder resin to which a quaternary ammonium salt is fixed, the binder resin being obtained from (i) a compound having at least two functional groups selected from the group consisting of a hydroxyl group, a mercapto group, an amino group and an acid anhydride group, and (ii) at least one quaternary ammonium salt having a structure represented by one of formulae (1) to (8), said quaternary ammonium salt being fixed by a reaction between the functional group in compound (i) and an epoxy group in quaternary ammonium salt (ii):

where n1 represents 2 or 3, X A represents a group having a structure represented by formula (9), and X B represents an electron-donating group or a hydrogen atom;

where R 1 to R 3 independently represent a hydrogen atom or a methyl group, R 4 and R 5 independently represent a methyl group, an ethyl group or a glycidyl group, X − represents an anion, and “a” represents 0 or 1;

where n2 represents 2 or 3, and X C represents a group having a structure represented by formula (10);

where R 6 to R 8 independently represent a hydrogen atom or a methyl group, R 9 and R 10 independently represent a methyl group, an ethyl group or a glycidyl group, X − represents an anion, and “b” represents 0 or 1;

where n3 and n5 independently represent 1 or 2, n4 represents 1 or 2, and X D and X E independently represent a group having a structure represented by formula (11);

where R 11 to R 13 independently represent a hydrogen atom or a methyl group, R 14 and R 15 independently represent a methyl group, an ethyl group or a glycidyl group, X − represents an anion, and “c” represents 0 or 1;

where n6 and n8 independently represent 1 or 2, n7 represents 1 or 2, and X F and X G independently represent a group having a structure represented by formula (12);

where R 16 to R 18 independently represent a hydrogen atom or a methyl group, R 19 and R 20 independently represent a methyl group, an ethyl group or a glycidyl group, X − represents an anion, and “d” represents 0 or 1;

where “e” represents 1 or 2, and X H and X I independently represent a group having a struct

Assignees

• Canon Kk

Inventors

• Nishioka Satoru
• Yamada Satoru
• Yamauchi Kazuhiro
• Kikuchi Yuichi

Classifications

• G03G15/0233

  Structure, details of the charging member, e.g. chemical composition, surface properties · CPC title

• G03G15/1685

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

• G03G15/0216

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

• C08K2201/001

  Conductive additives · CPC title

• C08K5/19

  Quaternary ammonium compounds · CPC title