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:
May. 06, 2014
Filed:
Aug. 06, 2012
Shuichi Egawa, Kasugai, JP;
Masanari Umeda, Kani-gun, JP;
Yousuke Hayashi, Kasugai, JP;
Tokai Rubber Industries, Ltd., Aichi, JP;
Abstract
A development roll for electrophotographic equipment includes a shaft body, a rubber elastic layer formed by molding on an outer circumference of the shaft body and having many convex portions formed by transfer molding on the outer circumferential surface thereof, and a coating layer disposed on an outer circumference of the rubber elastic layer. The coating layer is composed of a cured body of a coating material containing (A) a thermoplastic urethane having a number-average molecular weight in the range of 50,000 to 200,000, (B) a polyol having a number-average molecular weight in the range of 500 to 4,000, and (C) a curing agent. The mass percentages a, b, and c of the components (A), (B), and (C) satisfy the following expressions: a+b+c=100, 40≦a≦75, 5≦b≦20, and 20≦c.