Electrophotography – Image formation – Fixing
Reexamination Certificate
2008-12-03
2011-12-27
Gray, David (Department: 2852)
Electrophotography
Image formation
Fixing
Reexamination Certificate
active
08086160
ABSTRACT:
A fixing roller has a base layer, a rubber layer formed on the base layer and a surface layer formed of a fluororesin tube, and a heater disposed inside the roller. The surface layer of the roller is formed by covering the fluororesin tube on the rubber layer in a condition where the fluororesin tube is pulled in a radial direction of the fluororesin tube, the fluororesin tube has an internal diameter less than an outer diameter of the roller and a thickness of 20 microns or smaller and a crystallization degree of the fluororesin tube being 50% or smaller. The roller is made by expanding the fluororesin tube is in a radial direction and drawing the fluororesin tube in a generatrix direction thereof, wherein a drawing ratio of the fluororesin tube in the drawing the fluororesin tube in the generatrix direction is 5% or smaller.
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Akamatsu Takaaki
Nakagawa Ken
Nishizawa Yuki
Tetsuno Shuuichi
Yajima Yuichi
Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
Gray David
Roth Laura
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