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:
Apr. 03, 2007
Filed:
Feb. 25, 2004
Nobutoshi Chigira, Tokyo, JP;
Nobutoshi Chigira, Tokyo, JP;
Oki Data Corporation, Tokyo, JP;
Abstract
An image-forming apparatus includes image-forming sections, a density detector, and a controller. Each image-forming section has an exposing unit and a developing unit. The image-forming section prints an image of a density detection pattern having a plurality of pattern segments of different duties. The image is printed on a print medium under a predetermined printing condition. The density detector outputs detection values indicative of densities of the plurality of pattern segments printed on the print medium. The controller determines a correction value based on the detection values and corresponding target values of density to modify the printing condition for the image-forming sections. The correction value may be a correction to the amount of light to be emitted from the exposing unit. The correction value may be a correction to the developing voltage to be supplied to the developing unit. The correction value may be weighted.