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. 11, 2014
Filed:
Jan. 20, 2012
Seizo Suzuki, Chiba, JP;
Masaaki Ishida, Kanagawa, JP;
Atsufumi Omori, Kanagawa, JP;
Kazuhiro Akatsu, Kanagawa, JP;
Muneaki Iwata, Kanagawa, JP;
Hayato Fujita, Kanagawa, JP;
Seizo Suzuki, Chiba, JP;
Masaaki Ishida, Kanagawa, JP;
Atsufumi Omori, Kanagawa, JP;
Kazuhiro Akatsu, Kanagawa, JP;
Muneaki Iwata, Kanagawa, JP;
Hayato Fujita, Kanagawa, JP;
Ricoh Company, Limited, Tokyo, JP;
Abstract
Apparatus that forms an image according to image information includes density sensors that detect image density variations in main and sub-scanning directions. A processing device generates correction data for correcting a light source output to suppress the density variations based on detection results. The processing device modifies the correction data such that the light source output after the correction is at least a minimum rated output at a position at which the output after the correction is lower than the minimum rated output, in the relation between a position on the surface of the photosensitive element in the main-scanning direction and the output after the correction, and modifies the correction data such that the light source output after the correction is at most a maximum rated output at a position at which the output after the correction is higher than the maximum rated output.