US 2016/0085192 A1 · METHOD FOR PRODUCING A FIXING PRESSURE ROLLER

Abstract

The present invention provides a fixing pressure roller exhibiting excellent compression set and having low hardness and low heat capacity, as well as a fixing device including the fixing pressure roller. A pressure roller employed in a fixing unit of a fixing device includes a core, and an elastic layer provided around the core, wherein the elastic layer is formed of a silicone rubber product produced by mixing a silicone rubber raw material with resin microballoons and water, and then curing the silicone rubber raw material; and the silicone rubber product includes therein voids provided by breakage of the resin microballoons through application of pressure, and voids provided through evaporation of the water.

Claims4

Dependent claims

A method for producing a fixing pressure roller for being employed in a fixing unit of a fixing device, the fixing pressure roller comprising a core, and an elastic layer provided around the core, wherein the method comprises steps of:

mixing a silicone rubber raw material with resin microballoons and water to thereby prepare a silicone rubber composition;
charging the silicone rubber composition around the core placed in a mold;
curing the silicone rubber composition to form a silicone rubber product containing voids provided through evaporation of the water:
and
applying pressure to the silicone rubber product in such a manner that the silicone rubber product includes therein voids to form the elastic layer provided around the core.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

14/953,035Filed 27 Nov 2015

Priority

JP 2013-14893817 Jul 2013

Published

24 Mar 2016

Term ends

Not estimatedThe source records don’t support an estimate.

Classification9 codes

B29C 35/0233
Using pressure vessels, e.g. autoclaves, vulcanising pans: the curing continuing after removal from the mould
G03G 15/206
Using contact heat: structural details or chemical composition of the pressure elements and layers thereof
B29K 2083/005
Use of polymers having silicon, with or without sulfur, nitrogen, oxygen, or carbon only, in the main chain, as moulding material: lSR, i.e.…
B29K 2105/045
Cellular or porous: with open cells

Method for producing a fixing pressure roller

Life of this patent

Method for producing a fixing pressure roller

Life of this patent

Abstract

Claims4