The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 27, 2011
Filed:
Dec. 03, 2008
Yuki Nishizawa, Susono, JP;
Ken Nakagawa, Mishima, JP;
Takaaki Akamatsu, Suntou-gun, JP;
Shuuichi Tetsuno, Numazu, JP;
Yuichi Yajima, Susono, JP;
Yuki Nishizawa, Susono, JP;
Ken Nakagawa, Mishima, JP;
Takaaki Akamatsu, Suntou-gun, JP;
Shuuichi Tetsuno, Numazu, JP;
Yuichi Yajima, Susono, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
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.