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:
Oct. 23, 2012
Filed:
Aug. 24, 2010
Izumi Kinoshita, Hyogo, JP;
Kunihiro Komai, Osaka, JP;
Tatsuya Miyadera, Osaka, JP;
Yoshinori Shirasaki, Osaka, JP;
Takuhei Yokoyama, Osaka, JP;
Izumi Kinoshita, Hyogo, JP;
Kunihiro Komai, Osaka, JP;
Tatsuya Miyadera, Osaka, JP;
Yoshinori Shirasaki, Osaka, JP;
Takuhei Yokoyama, Osaka, JP;
Ricoh Company, Limited, Tokyo, JP;
Abstract
An optical writing device includes: a light source including arrays arranged in a main scanning direction, each array including light-emitting elements arranged in the main scanning direction; a correction-value holding unit to hold, correspondingly with a light-emitting element, a correction value for changing timing to read out pixel data stored in an image storage unit; and a light-source drive unit to drive the light source by reading out the stored pixel data stored, according to the correction value. The correction-value holding unit includes a first area for holding a first correction value corresponding to a first light-emitting element located at an end of an array and a second area for holding a second correction value corresponding to a second light-emitting element other than the first light-emitting element, the first holding area being larger than the second holding area.