发明授权
- 专利标题: Printing apparatus and methods for compensating synchronization errors
- 专利标题(中): 用于补偿同步误差的打印装置和方法
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申请号: US771473申请日: 1985-08-30
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公开(公告)号: US4635072A公开(公告)日: 1987-01-06
- 发明人: Norbert Conrads , Ulrich Schiebel , Rolf Kirchhoff
- 申请人: Norbert Conrads , Ulrich Schiebel , Rolf Kirchhoff
- 申请人地址: NY New York
- 专利权人: U.S. Philips Corporation
- 当前专利权人: U.S. Philips Corporation
- 当前专利权人地址: NY New York
- 优先权: DEX3218120 19820514
- 主分类号: B41J11/42
- IPC分类号: B41J11/42 ; G06K15/12 ; G01D15/06 ; G01D9/12
摘要:
The invention provides a method for compensating synchronization errors in non-impact printers, without influencing the transport of the record carrier and without changing the printing frequency of the printing elements. A control value is derived from a difference between the actual transport speed and a predetermined transport speed of the record carrier. This control value is used to vertically deflect the recording beam, after each picture line, by a fraction of the predetermined picture line spacing. The sum of the cumulative vertical deflections are compared with the value of the picture line spacing, and the recording of the next picture line is delayed by one deflection period of the recording beam when the sum is greater than or equal to the value of the picture line spacing.
公开/授权文献
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