发明名称 Correction of image data scaling in screen area
摘要 An image forming apparatus comprises a scaling correction circuit that corrects scaling in a sub-scanning direction of image data according to scaling data, a screen processing circuit that, of image data whose scaling in the sub-scanning direction has been corrected by the scaling correction circuit, performs screen processing on image data included in a screen area; and an image forming unit that forms an image based on the image data that has been processed by the screen processing circuit. The scaling correction circuit changes the scaling in the sub-scanning direction such that a pixel arrangement of the screen area after the scaling is changed becomes a pixel arrangement of image data before the scaling was changed.
申请公布号 US8213045(B2) 申请公布日期 2012.07.03
申请号 US20080131337 申请日期 2008.06.02
申请人 MOTOYAMA HAJIME;CANON KABUSHIKI KAISHA 发明人 MOTOYAMA HAJIME
分类号 G06K15/02 主分类号 G06K15/02
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