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. 11, 2018
Filed:
Nov. 16, 2016
Canon Kabushiki Kaisha, Tokyo, JP;
Yoichi Takikawa, Kawasaki, JP;
Ryosuke Otani, Tokyo, JP;
Hidenori Kanazawa, Mishima, JP;
Go Araki, Suntou-gun, JP;
Hisashi Ishikawa, Urayasu, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
The present invention performs inplane uneven density correction that suppresses a number of tone correction properties and has few correction residuals. Accordingly, a correction unit corrects pixel data D based on a plurality of tone correction properties respectively corresponding to a plurality of spot diameters of a light to expose on a surface of a photoreceptor, and to generate a plurality of pieces of correction data Dand D. A setting unit sets a ratio Rb based on a spot diameter on the photoreceptor of a pixel corresponding to the pixel data D. A blending unit generates tone correction data Dc by blending the plurality of pieces of correction data Dand Dbased on the ratio Rb.