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:
Mar. 01, 2005
Filed:
Dec. 19, 2002
Kohji Kamiya, Tokyo, JP;
Kyoichi Ashikawa, Tokyo, JP;
Norihiko Aze, Tokyo, JP;
Minoru Matsuo, Tokyo, JP;
Nozomu Takahata, Tokyo, JP;
Kohji Kamiya, Tokyo, JP;
Kyoichi Ashikawa, Tokyo, JP;
Norihiko Aze, Tokyo, JP;
Minoru Matsuo, Tokyo, JP;
Nozomu Takahata, Tokyo, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
Disclosed are a fixing belt and a method for evaluating it in which an occurrence of crumple can be prevented by means of accurate evaluation whether a surface of the fixing belt has a appropriate flexibility or not. In this method for evaluating, a universal hardness test is achieved for the fixing belt in which an elastic layer and a mold releasing layer are laminated on a substrate, the fixing belt is judged as an acceptable product if a creep value Cis included within a range of 0.40≦C≦3.50(%) when a creep value Cwhich is measured from the mold releasing layer side is defined by a formula below.=()/×100(%)where his a pushed depth (mm) when a test load reaches a predetermined value which is kept for a predetermined period of time, and