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:
Nov. 25, 2008
Filed:
Aug. 05, 2005
Tadashi Kasai, Tokyo, JP;
Hideki Kimura, Kanagawa, JP;
Tsuyoshi Imanura, Kanagawa, JP;
Katsumi Masuda, Tokyo, JP;
Hideo Yoshizawa, Saitama, JP;
Kiyotaka Sakai, Kanagawa, JP;
Tadashi Kasai, Tokyo, JP;
Hideki Kimura, Kanagawa, JP;
Tsuyoshi Imanura, Kanagawa, JP;
Katsumi Masuda, Tokyo, JP;
Hideo Yoshizawa, Saitama, JP;
Kiyotaka Sakai, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
It is an object of the present invention to provide a process unit and an image forming apparatus in which generation of loss of image density due to flying off of developer and the edge effect occurring as a side-effect under developing conditions aimed at improving development performance can be reduced, even when a DC bias development system is adopted, and which can suppress developing density unevenness caused by impact occurring on contact of the teeth of gears in the drive system.