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:
Nov. 17, 2009
Filed:
Mar. 24, 2006
Shouji Inoue, Tsukuba, JP;
Taku Hatanaka, Moriya, JP;
Kenichi Mochizuki, Ushiku, JP;
Mayuko Kodama, Ushiku, JP;
Shouji Inoue, Tsukuba, JP;
Taku Hatanaka, Moriya, JP;
Kenichi Mochizuki, Ushiku, JP;
Mayuko Kodama, Ushiku, JP;
Canon Kasei Kabushiki Kaisha, Tsukuba-Shi, Ibaraki-Ken, JP;
Abstract
A blade for electrophotographic apparatus which has a blade member formed of a polyurethane resin, wherein the polyurethane resin is a resin produced by using a polyurethane raw-material composition containing at least the following components (A) to (E): (A) a polyisocyanate; (B) a polyol having a number average molecular weight of 2,000 or more and 4,000 or less; (C) a chain extender having a molecular weight of 200 or less: (D) a polyol having a number average molecular weight which is smaller than the number average molecular weight of the component-(B) polyol and is larger than the molecular weight of the component-(C) chain extender; and (E) a urethane curing catalyst.