Image forming apparatus having different dots per

专利名称：Image forming apparatus having different

dots per unit area densities

发明人：Nobutoshi Chigira申请号：US10786522申请日：20040225公开号：US07200346B2公开日：20070403

专利附图：

摘要：An image-forming apparatus includes image-forming sections, a densitydetector, and a controller. Each image-forming section has an exposing unit and adeveloping 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 printedon a print medium under a predetermined printing condition. The density detectoroutputs detection values indicative of densities of the plurality of pattern segmentsprinted on the print medium. The controller determines a correction value based on thedetection values and corresponding target values of density to modify the printingcondition for the image-forming sections. The correction value may be a correction to theamount of light to be emitted from the exposing unit. The correction value may be acorrection to the developing voltage to be supplied to the developing unit. Thecorrection value may be weighted.

申请人：Nobutoshi Chigira

地址：Tokyo JP

国籍：JP

代理机构：Akin Gump Strauss Hauer & Feld, LLP

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