发明名称 |
Halftone image recording apparatus and method based on first and second timing signals chosen from a plurality of synchronized clocks |
摘要 |
A half-tone image recorder in which input digital data is represented by a plurality of bit data for each pixel. A data conversion device outputs digital data indicative of a recording-start position and a recording-end position, based on the input digital data. A recording device such as a laser printer records an image in accordance with the output digital data from the data conversion device. The data conversion device controls a first value of the digital data indicative of the recording-start position and a second value of the digital data indicative of the recording-end position so as to change a black-area growing direction within one pixel in the recorded image. This results in the recordation of a high-quality half-tone image without conspicuous vertical stripes and without conspicuous white stripes in the main-scanning direction of the recording device due to pitch irregularity.
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申请公布号 |
US5760811(A) |
申请公布日期 |
1998.06.02 |
申请号 |
US19930021851 |
申请日期 |
1993.02.24 |
申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
SETO, KAORU;KAWANA, TAKASHI;MAEKAWA, SHINICHIRO |
分类号 |
B41J2/52;G06K15/12;G06K15/22;H04N1/23;H04N1/40;(IPC1-7):B41J2/385;B41J2/47;G03G13/04 |
主分类号 |
B41J2/52 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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