US2015023706A1PendingUtilityA1

Fixing pressure roller and fixing device

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Assignee: SYNZTEC CO LTDPriority: Jul 17, 2013Filed: Jul 17, 2014Published: Jan 22, 2015
Est. expiryJul 17, 2033(~7 yrs left)· nominal 20-yr term from priority
Inventors:Masaya SuzukiAkira NishidaShingo Sugiyama
G03G 15/2089B29K 2105/045G03G 15/206B29L 2031/767B29C 35/0233B29K 2083/005
57
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Claims

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.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A fixing pressure roller 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 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. 
     
     
         2 . A fixing pressure roller according to  claim 1 , wherein the pressure is water pressure. 
     
     
         3 . A fixing pressure roller according to  claim 1 , wherein the elastic layer has thereon a release layer. 
     
     
         4 . A fixing pressure roller according to  claim 2 , wherein the elastic layer has thereon a release layer. 
     
     
         5 . A fixing device comprising a fixing pressure roller as recited in  claim 1 . 
     
     
         6 . A fixing device comprising a fixing pressure roller as recited in  claim 2 . 
     
     
         7 . A fixing device comprising a fixing pressure roller as recited in  claim 3 . 
     
     
         8 . A fixing device comprising a fixing pressure roller as recited in  claim 4 .

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