US Patent 7374527 Rubber roller for image-forming apparatus
Patent 7374527 was granted and assigned to Sumitomo Rubber Industries on May, 2008 by the United States Patent and Trademark Office.
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Patent abstract
A rubber roller, for use in an image-forming apparatus, which is formed by molding a rubber composition into the shape of a roller. In the rubber roller, a complex elastic modulus E* of rubber and a surface roughness Rz of the rubber roller satisfy a relationship indicated by an equation (1) shown below; and a hardness change of the rubber is set to not more than five points when the rubber ages at 70° C. for eight days:7×Ln E*−0.12×Rz+3.0≦10. Equation (1)
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US Patent 07374527 Rubber roller for image-forming apparatus US Patent 7374527 Rubber roller for image-forming apparatus
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Patent Number
0737452700
Patent Number
737452700
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Official Website
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Infobox
Is a
Current Assignee
Patent Jurisdiction
Patent Number
073745270
Date of Patent
May 20, 2008
0Patent Application Number
117142570
Date Filed
March 6, 2007
0Official Website
Patent Primary Examiner
Edits on 26 Sep, 2022
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Infobox
Is a
Current Assignee
Patent Jurisdiction
Patent Number
073745270
Date of Patent
May 20, 2008
0Patent Application Number
117142570
Date Filed
March 6, 2007
0Official Website
Patent Primary Examiner
Edits on 17 Jun, 2022
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US Patent 07374527 Rubber roller for image-forming apparatus
Infobox
Is a
Current assignee
Patent jurisdiction
Patent number
07374527
Date of patent
May 20, 2008
Patent application number
11714257
Date Filed
March 6, 2007
Patent primary examiner
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