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. 05, 2012
Filed:
Jun. 22, 2009
Hiroshi Takahashi, Kanagawa, JP;
Masato Kobayashi, Kanagawa, JP;
Tomonori Kimura, Kanagawa, JP;
Kazushi Takei, Tokyo, JP;
Yuichi Sakurada, Tokyo, JP;
Nobuyuki Satoh, Kanagawa, JP;
Yasuo Sakurai, Kanagawa, JP;
Hiroshi Takahashi, Kanagawa, JP;
Masato Kobayashi, Kanagawa, JP;
Tomonori Kimura, Kanagawa, JP;
Kazushi Takei, Tokyo, JP;
Yuichi Sakurada, Tokyo, JP;
Nobuyuki Satoh, Kanagawa, JP;
Yasuo Sakurai, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An image forming apparatus is disclosed that includes a recording head having a plurality of nozzles and scanning in forward and backward scanning directions to form dot images on the recording medium, an imaging unit imaging an image on the recording medium, a detection unit detecting a positional shift amounts of the dot images and inclination amounts of the recording head based on calibration image data obtained by imaging two first marks and two second marks in a single view by the imaging unit, and a correction unit correcting a drive of the recording head based on the detected positional shift amounts and the inclination amounts of the recording head.