Sliding member, sliding member for fixing device, fixing device, image formation apparatus, and method for producing sliding member

Patent metadata

Field	Value
Publication number	US-2017139360-A1
Application number	US-201615336292-A
Country	US
Kind code	A1
Filing date	Oct 27, 2016
Priority date	Nov 18, 2015
Publication date	May 18, 2017
Grant date	—

Abstract

A sliding member comprises: siloxane having a reactive substituent; and a holding member having a group which can react with the substituent and bonds to the substituent to hold the siloxane.

First claim

What is claimed is:

1 . A sliding member comprising:
siloxane having a reactive substituent; and a holding member having a group which can react with the substituent and bonds to the substituent to hold the siloxane.

2 . The sliding member according to claim 1 , wherein the holding member includes a heat-resistant fiber which has either one or both of a free amino group and a free carbonyl group.

3 . The sliding member according to claim 2 , wherein the heat-resistant fiber is aramid fiber.

4 . The sliding member according to claim 1 , wherein the holding member is a nonwoven fabric composed of aramid fiber.

5 . The sliding member according to claim 1 , wherein the reactive substituent is one or more types selected from a free amino group, a free epoxy group, and a free carbonyl group.

6 . A sliding member recited in claim 1 and used for a fixing device, the fixing device including
a roller and an endless belt rotating together in contact with each other, and
a pressing member disposed at an inner circumferential side of the endless belt, and pressing an inner circumferential surface of the endless belt toward the roller and thus cooperating with the roller to sandwich the endless belt,
the sliding member being disposed between the endless belt and the pressing member or as a portion of the pressing member.

7 . A fixing device comprising:
a roller and an endless belt rotating together in contact with each other; a pressing member disposed at an inner circumferential side of the endless belt, and pressing an inner circumferential surface of the endless belt toward the roller and thus cooperating with the roller to sandwich the endless belt; and a sliding member recited in claim 1 and disposed between the endless belt and the pressing member or as a portion of the pressing member, a base material included in the inner circumferential surface of the endless belt having at least one of a free amino group and a free carbonyl group.

8 . The fixing device according to claim 7 , wherein the base material is polyimide resin.

9 . The fixing device according to claim 7 , wherein the base material includes siloxane having the reactive substituent.

10 . The fixing device according to claim 7 , wherein:
the pressing member has a nip forming portion and a high-pressure sliding portion; the nip forming portion is disposed at an inner circumferential side of the endless belt adjacent to the roller, and, as the sliding member or via the sliding member, presses the inner circumferential surface of the endless belt and thus cooperates with the roller to pressure-feed a sheet; and the high-pressure sliding portion is disposed on a side to which the sheet is pressure-fed from the nip forming portion, and as the sliding member or via the sliding member, applies pressure to separate the sheet from the roller.

11 . The fixing device according to claim 10 , wherein the high-pressure sliding portion has a curved surface having a curvature K of 0.15 or more and 1 or less.

12 . The fixing device according to claim 7 , comprising a heater to heat at least one of the roller and the endless belt.

13 . An image formation apparatus comprising the fixing device according to claim 7 .

14 . A method for producing a sliding member comprising a holding member, comprising:
impregnating the holding member with siloxane having a reactive substituent; and heating and firing the holding member that is impregnated with the siloxane to cause the holding member to hold the siloxane.

Assignees

• Konica Minolta Inc

Inventors

• Nagai Yasuki

Classifications

• G03G15/2075 Primary

  Physics · mapped topic

• G03G2215/2009

  Pressure belt · CPC title

• G03G15/2089

  Physics · mapped topic

• G03G15/206 Primary

  Structural details or chemical composition of the pressure elements and layers thereof · CPC title

• G03G2215/2035

  the fixing nip having a stationary belt support member opposing a pressure member · CPC title