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:
Nov. 29, 2006
Kazuyuki Sato, Kanagawa, JP;
Tadashi Shinohara, Kanagawa, JP;
Shinji Kobayashi, Tokyo, JP;
Takao Watanabe, Kanagawa, JP;
Nobuyoshi Kaima, Tokyo, JP;
Yuichiro Shukuya, Tokyo, JP;
Yoshiaki Kawai, Kanagawa, JP;
Kazuyuki Sato, Kanagawa, JP;
Tadashi Shinohara, Kanagawa, JP;
Shinji Kobayashi, Tokyo, JP;
Takao Watanabe, Kanagawa, JP;
Nobuyoshi Kaima, Tokyo, JP;
Yuichiro Shukuya, Tokyo, JP;
Yoshiaki Kawai, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
In an image forming device, a correction unit corrects image formation operation based on a plurality of correction patterns. A pattern creation unit forms an electrostatic latent image of the correction patterns on a photoconductor and transferring the image to an intermediate transfer body to form the correction patterns thereon. A pattern detecting unit detects the correction patterns formed on the intermediate transfer body. A speed detecting unit detects a movement speed of the correction patterns on the intermediate transfer body are moved. A timing holding unit computes a set value of detection start timing for starting detection of each correction pattern to hold the set value. The correction unit is provided to determine, in advance of correcting image formation operation, a detection start timing based on the movement speed and the set value.