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:
Oct. 28, 2008
Filed:
Jun. 13, 2003
Yasuo Suzuki, Shizuoka, JP;
Satoshi Igari, Kanagawa, JP;
Katsuaki Miyawaki, Kanagawa, JP;
Yasushi Nakazato, Tokyo, JP;
Takeo Suda, Tokyo, JP;
Tetsuroh Miura, Tokyo, JP;
Takeshi Saitou, Tokyo, JP;
Yasuo Suzuki, Shizuoka, JP;
Satoshi Igari, Kanagawa, JP;
Katsuaki Miyawaki, Kanagawa, JP;
Yasushi Nakazato, Tokyo, JP;
Takeo Suda, Tokyo, JP;
Tetsuroh Miura, Tokyo, JP;
Takeshi Saitou, Tokyo, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An electrophotographic image forming apparatus of the present invention includes a frame, a photoconductive drum disposed in the frame, and an air conditioning device for removing moisture around the drum inside the frame. The drum has a wear-resistant, durable surface layer that wears by an amount of 0.05 μm to 0.5 μm for 100,000 rotations.