发明授权
US5565907A Image forming apparatus capable of producing high quality halftone images
失效
能够生产高质量半色调图像的图像形成装置
- 专利标题: Image forming apparatus capable of producing high quality halftone images
- 专利标题(中): 能够生产高质量半色调图像的图像形成装置
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申请号: US230558申请日: 1994-04-20
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公开(公告)号: US5565907A公开(公告)日: 1996-10-15
- 发明人: Shinichiro Wada , Takahiro Yagishita
- 申请人: Shinichiro Wada , Takahiro Yagishita
- 申请人地址: JPX Tokyo
- 专利权人: Ricoh Company, Ltd.
- 当前专利权人: Ricoh Company, Ltd.
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX5-093242 19930420; JPX5-176710 19930716
- 主分类号: G06K15/12
- IPC分类号: G06K15/12 ; H04N1/405 ; H04N1/21
摘要:
An image forming apparatus capable of producing a high quality halftone image stably and rendering faithful tonality. For a bilevel image, the apparatus smooths the boundary between black and white. For a multilevel image, the apparatus obviates solitary dots for thereby causing dots to concentrate. As a result, a bilevel image and a multilevel image are provided with a clear boundary.
公开/授权文献
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