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:
Aug. 26, 2014
Filed:
Nov. 21, 2011
Yoshinori Shirasaki, Osaka, JP;
Izumi Kinoshita, Hyogo, JP;
Kunihiro Komai, Osaka, JP;
Tatsuya Miyadera, Osaka, JP;
Takeshi Shikama, Osaka, JP;
Takuhei Yokoyama, Osaka, JP;
Akinori Yamaguchi, Osaka, JP;
Yoshinori Shirasaki, Osaka, JP;
Izumi Kinoshita, Hyogo, JP;
Kunihiro Komai, Osaka, JP;
Tatsuya Miyadera, Osaka, JP;
Takeshi Shikama, Osaka, JP;
Takuhei Yokoyama, Osaka, JP;
Akinori Yamaguchi, Osaka, JP;
Ricoh Company, Limited, Tokyo, JP;
Abstract
A line-head control device that controls a line head includes: a calculation unit that divides image data into a plurality of areas in sub-scanning direction and calculates a printing percentage for each of the areas; an allocation unit that allocates a total correction amount, for correcting magnification of the image data in the sub-scanning direction, to the areas according to the printing percentage for each of the areas calculated by the calculation unit; and a control unit that changes an emission period of the light emitted from the line head so as to satisfy a partial correction amount that is an allocation of the total correction amount to each of the areas, exposes the image carrier to the light emitted from the line head with the changed light emission period, thereby causing a latent image to be formed on the image carrier based on the image data.