发明名称 Image forming apparatus which forms an image by dot images
摘要 An image forming apparatus which forms an image by dot images. The invention includes a halftoning device for processing of halftone for inputted image data, a judging device for judging characteristics in the neighborhood of a target dot output from the halftoning means, gamma correcting means for correcting the gamma characteristic of image data of the target dot according to the judging by the judging device. Therefore, it is possible to prevent image degradation and to decrease a number of levels of halftone of the printed image.
申请公布号 US6014499(A) 申请公布日期 2000.01.11
申请号 US19970801111 申请日期 1997.02.14
申请人 RICOH COMPANY, LTD. 发明人 SASAKI, EIICHI
分类号 H04N1/405;H04N1/407;(IPC1-7):H04N1/46 主分类号 H04N1/405
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