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. 17, 2009
Filed:
Aug. 03, 2006
Nobutaka Takeuchi, Kanagawa, JP;
Shin Hasegawa, Kanagawa, JP;
Kohta Fujimori, Kanagawa, JP;
Kayoko Tanaka, Tokyo, JP;
Yushi Hirayama, Kanagawa, JP;
Hitoshi Ishibashi, Kanagawa, JP;
Osamu Ariizumi, Kanagawa, JP;
Naoto Watanabe, Kanagawa, JP;
Shinji Kato, Kanagawa, JP;
Shinji Kobayashi, Kanagawa, JP;
Kazumi Kobayashi, Tokyo, JP;
Takashi Enami, Kanagawa, JP;
Fukutoshi Uchida, Kanagawa, JP;
Ryohta Morimoto, Kanagawa, JP;
Nobutaka Takeuchi, Kanagawa, JP;
Shin Hasegawa, Kanagawa, JP;
Kohta Fujimori, Kanagawa, JP;
Kayoko Tanaka, Tokyo, JP;
Yushi Hirayama, Kanagawa, JP;
Hitoshi Ishibashi, Kanagawa, JP;
Osamu Ariizumi, Kanagawa, JP;
Naoto Watanabe, Kanagawa, JP;
Shinji Kato, Kanagawa, JP;
Shinji Kobayashi, Kanagawa, JP;
Kazumi Kobayashi, Tokyo, JP;
Takashi Enami, Kanagawa, JP;
Fukutoshi Uchida, Kanagawa, JP;
Ryohta Morimoto, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
The image forming apparatus includes a developing device that holds a two-component developer to develop an image, a detecting unit that outputs a reference output value and a second output value when the two-component developer is stirred and carried at a stirring/carrying speed corresponding to a second image forming mode, a stirring/carrying member that stirs and carries the two-component developer, and a controlling unit that controls the toner concentration based on the reference output value when forming an image in a first image forming mode, and controls the toner concentration, when forming an image in the second image forming mode, a corrected output value obtained by correcting an output value in the second image forming mode with a difference value between the reference output value and the second output value.