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:
Dec. 08, 2009
Filed:
Apr. 30, 2007
Yasuhisa Ehara, Kamakura, JP;
Kazuhiko Kobayashi, Tokyo, JP;
Joh Ebara, Kamakura, JP;
Seiichi Handa, Tokyo, JP;
Noriaki Funamoto, Tokyo, JP;
Toshiyuki Uchida, Kawasaki, JP;
Keisuke Sugiyama, Yokohama, JP;
Kouji Amanai, Yokohama, JP;
Yasuhisa Ehara, Kamakura, JP;
Kazuhiko Kobayashi, Tokyo, JP;
Joh Ebara, Kamakura, JP;
Seiichi Handa, Tokyo, JP;
Noriaki Funamoto, Tokyo, JP;
Toshiyuki Uchida, Kawasaki, JP;
Keisuke Sugiyama, Yokohama, JP;
Kouji Amanai, Yokohama, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An image forming apparatus, in which a program for carrying out an image forming method is provided, includes a transfer member to receive respective images formed on a plurality of image bearing members, an image detecting unit to detect the images conveyed on the transfer member, a paper length detecting unit to detect a length of a recording medium in a sheet travel direction, a counting unit to count the number of recording media and to change a count up value according to a detection result by the paper length detecting unit, and a control unit to control an image forming timing with respect to the image bearing members based on a detection timing of the image and to perform a positional deviation adjustment each time a counted value increases by a predetermined amount so as to reduce an amount of a positional deviation of the image.