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:
Feb. 03, 2004
Filed:
Aug. 16, 2002
Applicant:
Inventor:
Naka Hirayama, Tokyo, JP;
Assignee:
Nitto Kogyo Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
B23P 1/500 ;
U.S. Cl.
CPC ...
B23P 1/500 ;
Abstract
A developing roller has a roller core, an electrically conductive layer provided on a circumferential surface of the roller core, and a covering layer provided on the outer circumferential surface of the conductive layer. The covering layer is formed by subjecting a reaction mixture containing a fluorine-containing polyol, a reactive silicone oil having an active hydrogen, and an isocyanate compound, to a reaction condition for reacting the fluorine-containing polyol and the reactive silicone oil with the isocyanate compound.