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:
Apr. 08, 2003
Filed:
Feb. 08, 2001
Masumi Sato, Kanagawa-ken, JP;
Hiroshi Yoshinaga, Chiba-ken, JP;
Yukiko Iwasaki, Kanagawa-ken, JP;
Hitoshi Ishibashi, Tokyo, JP;
Takatsugu Fujishiro, Tokyo, JP;
Masami Hiramatsu, Kanagawa-ken, JP;
Hiroko Hirano, Tokyo, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A charge roller that includes a metal core, an elastic member configured wrapped around the metal core, and film members is disclosed. Each of the film members is wrapped around each end of the elastic member in a circumferential direction of the metal core such that at least a part of each of the film members exists at every position around the ends of the elastic member in an axial direction of the metal core. Portions of the film members do not overlap each other in an radial direction of the metal core.