发明授权
- 专利标题: Print quality enhancement method and apparatus
- 专利标题(中): 打印质量增强方法和装置
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申请号: US161006申请日: 1993-12-01
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公开(公告)号: US5480240A公开(公告)日: 1996-01-02
- 发明人: John P. Bolash , Curt P. Breswick , Thomas J. Eade , David K. Lane , Randall D. Mayo , David S. Waldrop
- 申请人: John P. Bolash , Curt P. Breswick , Thomas J. Eade , David K. Lane , Randall D. Mayo , David S. Waldrop
- 申请人地址: CT Greenwich
- 专利权人: Lexmark International, Inc.
- 当前专利权人: Lexmark International, Inc.
- 当前专利权人地址: CT Greenwich
- 主分类号: B41J2/36
- IPC分类号: B41J2/36 ; G06K15/10 ; B41J2/22
摘要:
A print quality enhancement arrangement for a dot matrix printer such as a thermal ink jet printer. The arrangement includes a buffer for receiving 300 dots per inch (dpi) resolution data in the horizontal (print head movement) direction and creates 600 dpi resolution data using image enhancement techniques. The arrangement further includes correction of the higher resolution data to remove pels which are unprintable due to the frequency response of the print elements in the print head. The correction is performed using knowledge of the history of printed pels and the original 300 dpi data. The creation of the higher resolution data and its correction occur "on-the-fly" as data is being fed to the print head, rather than through the creation of a 300 by 600 dpi bitmap.
公开/授权文献
- US4872538A Article of luggage or the like and method of making same 公开/授权日:1989-10-10