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:
Sep. 16, 2014
Filed:
Dec. 05, 2013
Mamoru Yorimoto, Kanagawa, JP;
Tatsuhiko Okada, Kanagawa, JP;
Yuichi Sakurada, Tokyo, JP;
Daisaku Horikawa, Kanagawa, JP;
Makoto Moriwaki, Kanagawa, JP;
Mamoru Yorimoto, Kanagawa, JP;
Tatsuhiko Okada, Kanagawa, JP;
Yuichi Sakurada, Tokyo, JP;
Daisaku Horikawa, Kanagawa, JP;
Makoto Moriwaki, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An image forming apparatus forms adjustment patterns having a predetermined edge interval on a recording medium, while moving a carriage mounted with recording heads that eject a liquid droplet on the recording medium and formed of a sub-scanning motor and the like in a main-scanning direction by a main-scanning motor. The image forming apparatus performs a positional deviation correction process in which the adjustment pattern formed on the recording medium is read by a reading sensor mounted on the recording heads, while moving the carriage in the main-scanning direction, to correct a positional deviation of a landing position of the liquid droplet ejected from the recording heads based on an ideal interval between the adjustment patterns and a read result of the reading sensor repeatedly at least twice.