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:
Jun. 16, 2009
Filed:
Mar. 22, 2007
Shin Hasegawa, Zama, JP;
Shinji Kato, Kawasaki, JP;
Hitoshi Ishibashi, Kamakura, JP;
Kohta Fujimori, Yokohama, JP;
Naoto Watanabe, Atsugi, JP;
Osamu Ariizumi, Yokohama, JP;
Nobutaka Takeuchi, Yokohama, JP;
Kayoko Tanaka, Tokyo, JP;
Yushi Hirayama, Sagamihara, JP;
Shinji Kobayashi, Atsugi, JP;
Takashi Enami, Chigasaki, JP;
Kazumi Kobayashi, Yokohama, JP;
Fukutoshi Uchida, Kawasaki, JP;
Ryohta Morimoto, Ebina, JP;
Shin Hasegawa, Zama, JP;
Shinji Kato, Kawasaki, JP;
Hitoshi Ishibashi, Kamakura, JP;
Kohta Fujimori, Yokohama, JP;
Naoto Watanabe, Atsugi, JP;
Osamu Ariizumi, Yokohama, JP;
Nobutaka Takeuchi, Yokohama, JP;
Kayoko Tanaka, Tokyo, JP;
Yushi Hirayama, Sagamihara, JP;
Shinji Kobayashi, Atsugi, JP;
Takashi Enami, Chigasaki, JP;
Kazumi Kobayashi, Yokohama, JP;
Fukutoshi Uchida, Kawasaki, JP;
Ryohta Morimoto, Ebina, JP;
Ricoh Co., Ltd., Tokyo, JP;
Abstract
An image forming apparatus includes at least one image bearing member, an intermediate transfer member, a secondary transfer member, and at least one optical sensor. In the image forming apparatus, it is determined that output values of the respective amounts of toner detected by the at least one optical sensor are affected by an impact caused due to a separation of the secondary transfer member from the intermediate transfer member and the output values are ignored as image adjustment input information, when the secondary transfer member separates from the intermediate transfer member during any of writing, developing, and transferring the plurality of image adjustment patterns, if the output values fall outside a given range and an interval between the output values of adjacent image bearing members is substantially equal to a distance between the two adjacent image bearing members for the primary transfer.