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. 02, 2008
Filed:
May. 20, 2004
Takahiro Suzuki, Kodaira, JP;
Kunio Machida, Kodaira, JP;
Youichi Nishimuro, Kodaira, JP;
Bridgestone Corporation, Tokyo, JP;
Abstract
A cylindrical base for a photosensitive drum composed of a conductive resin composition containing a resin base material and a conductive material mainly containing carbon black, on which base a solvent-using photosensitive layer is directly formed, is characterized in that the resin base material mainly contains a mixed resin wherein (A) a polyester resin and (B) a polycarbonate resin is blended at a ratio (weight ratio) of (A)/(B)=50/50 to 90/10. The base for a photosensitive drum is excellent in chemical resistance, formability, dimensional accuracy, and adhesion to the photosensitive layer, while being excellent in dimensional stability. A photosensitive drum using such a base exhibits good printing performance and excellent durability.