发明授权
US07057756B2 Image processor, method for processing image, printing apparatus, printing method, program, and storage medium that stores computer-readable program code
失效
图像处理器，用于处理图像的方法，打印装置，打印方法，程序和存储计算机可读程序代码的存储介质
- 专利标题： Image processor, method for processing image, printing apparatus, printing method, program, and storage medium that stores computer-readable program code
- 专利标题（中）： 图像处理器，用于处理图像的方法，打印装置，打印方法，程序和存储计算机可读程序代码的存储介质
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申请号： US09903609申请日： 2001-07-13
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公开(公告)号： US07057756B2公开(公告)日： 2006-06-06
- 发明人: Takayuki Ogasahara , Hiroshi Tajika , Miyuki Fujita , Yuji Konno , Norihiro Kawatoko , Tetsuya Edamura , Tetsuhiro Maeda , Atsuhiko Masuyama
- 申请人： Takayuki Ogasahara , Hiroshi Tajika , Miyuki Fujita , Yuji Konno , Norihiro Kawatoko , Tetsuya Edamura , Tetsuhiro Maeda , Atsuhiko Masuyama
- 申请人地址： JP Tokyo
- 专利权人： Canon Kabushiki Kaisha
- 当前专利权人： Canon Kabushiki Kaisha
- 当前专利权人地址： JP Tokyo
- 代理机构： Fitzpatrick, Cella, Harper & Scinto
- 优先权： JP2000-216699 20000717; JP2000-264355 20000831; JP2001-199988 20010629
- 主分类号： G06F15/00
- IPC分类号： G06F15/00
摘要：
The present invention reduces the granularity of the dots for the entire density range by optimally setting formation amounts of a low-density dot and of a high-density dot per unit area. For this purpose, the formation amounts of the low-density dot and of the high-density dot in accordance with the density level are determined in such a way that as the density level rises, the formation amount of the low-density dot is gradually increased up to a first peak amount (200%) and, after reaching the first peak, gradually decreased, and in a range of density levels higher than a predetermined density level at which the low-density dot is formed to a specified amount (200%), as the density level rises, the formation amount of the high-density dot is gradually increased up to a second peak amount (100%) smaller than the first peak amount.
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