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. 10, 2009
Filed:
Apr. 11, 2007
Shinji Kato, Kanagawa, JP;
Shin Hasegawa, Kanagawa, JP;
Hitoshi Ishibashi, Kanagawa, JP;
Kohta Fujimori, Kanagawa, JP;
Nobutaka Takeuchi, Kanagawa, JP;
Osamu Ariizumi, Kanagawa, JP;
Naoto Watanabe, Kanagawa, JP;
Kayoko Tanaka, Tokyo, JP;
Yushi Hirayama, Kanagawa, JP;
Kazumi Kobayashi, Kanagawa, JP;
Shinji Kobayashi, Kanagawa, JP;
Fukutoshi Uchida, Kanagawa, JP;
Takashi Enami, Kanagawa, JP;
Ryohta Morimoto, Kanagawa, JP;
Shinji Kato, Kanagawa, JP;
Shin Hasegawa, Kanagawa, JP;
Hitoshi Ishibashi, Kanagawa, JP;
Kohta Fujimori, Kanagawa, JP;
Nobutaka Takeuchi, Kanagawa, JP;
Osamu Ariizumi, Kanagawa, JP;
Naoto Watanabe, Kanagawa, JP;
Kayoko Tanaka, Tokyo, JP;
Yushi Hirayama, Kanagawa, JP;
Kazumi Kobayashi, Kanagawa, JP;
Shinji Kobayashi, Kanagawa, JP;
Fukutoshi Uchida, Kanagawa, JP;
Takashi Enami, Kanagawa, JP;
Ryohta Morimoto, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
In an image forming apparatus, a toner image formed on a photosensitive drum is primarily transferred onto an intermediate transfer belt. The toner image on the intermediate transfer belt is secondarily transferred onto a transfer material by a secondary transfer roller in contact with the intermediate transfer belt. A relation A>B>C is satisfied, where A is a width of the intermediate transfer member, B is a width of the secondary transfer member, and C is a width of the transfer material. The intermediate transfer member includes a patch-pattern forming area that is not contacted by the secondary transfer member. The image forming apparatus includes a reflection-type photosensor that detects a patch pattern formed in the patch-pattern forming area.