发明授权
US06211893B1 Multi-gradation recording method 失效
多级记录法

  • 专利标题: Multi-gradation recording method
  • 专利标题(中): 多级记录法
  • 申请号: US09392157
    申请日: 1999-09-08
  • 公开(公告)号: US06211893B1
    公开(公告)日: 2001-04-03
  • 发明人: Satoshi MoriNaoki Yoshida
  • 申请人: Satoshi MoriNaoki Yoshida
  • 优先权: JP10-255093 19980909
  • 主分类号: B41J2205
  • IPC分类号: B41J2205
Multi-gradation recording method
摘要:
A multi-gradation recording method wherein the recording energy in high density region can be reduced, and the rough appearance in low density region or high density region and notchy appearance in profile or line of the image can be reduced while maintaining the level of reproduction of intermediate tones obtained by the conventional recording method using the zigzag pattern or the stripe pattern is provided which comprises: using a printer of the type wherein each one pixel is formed by using each one recording element and the optical density of the pixel formed is represented by the magnitude of the area of the pixel, dividing input data into two or more groups with respect to the data corresponding to pixels to be arranged in principal scanning direction, correcting the data of each group on the basis of the corresponding &ggr; correction data, the &ggr; correction data for the respective groups being different from each other, and performing recording on the basis of the corrected data wherein the pixels of all the groups are recorded at the same time in the same scanning operation in principal scanning direction.
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