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. 19, 2008
Filed:
Nov. 30, 2005
Eiji Shimojo, Tokyo, JP;
Haruji Mizuishi, Tokyo, JP;
Tokuya Ojimi, Kanagawa, JP;
Masanori Kawasumi, Kanagawa, JP;
Takuzi Yoneda, Tokyo, JP;
Ken Amemiya, Tokyo, JP;
Takatsugu Fujishiro, Tokyo, JP;
Hiroshi Ono, Tokyo, JP;
Toshio Koike, Kanagawa, JP;
Masami Tomita, Shizuoka, JP;
Yuji Arai, Kanagawa, JP;
Takeshi Uchitani, Kanagawa, JP;
Eiji Shimojo, Tokyo, JP;
Haruji Mizuishi, Tokyo, JP;
Tokuya Ojimi, Kanagawa, JP;
Masanori Kawasumi, Kanagawa, JP;
Takuzi Yoneda, Tokyo, JP;
Ken Amemiya, Tokyo, JP;
Takatsugu Fujishiro, Tokyo, JP;
Hiroshi Ono, Tokyo, JP;
Toshio Koike, Kanagawa, JP;
Masami Tomita, Shizuoka, JP;
Yuji Arai, Kanagawa, JP;
Takeshi Uchitani, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A charge apparatus charges by uniformly superimposing an alternate current bias voltage with a fixed frequency over a direct current bias voltage as the charge bias voltage on a photosensitive member. An exposure apparatus exposes the surface of the charged photosensitive member based on image data, and writes a latent image, and a developing apparatus supplies toner to and makes visible the latent image formed on the surface of the photosensitive member. A transfer apparatus transfers the visible image on the photosensitive member to a transfer medium, and a cleaning apparatus cleans the surface of the photosensitive member after transfer.