Multi-pass recording system using random mask
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United States of America Patent
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Feb 6, 2001
Grant Date -
N/A
app pub date -
Dec 22, 1997
filing date -
Dec 25, 1996
priority date (Note) -
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status (Latency Note)
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Abstract
Multi-pass recording is performed to record an input image by plural scans of a recording head over a recording medium in a main scan direction with at least one interposed sub-scan. A thinned image is provided in each scan. Recording data for the input image is produced by creating mask patterns having a resolution lower than the recording resolution in the main scan direction and/or the interposed sub-scan direction on the basis of a random number array. The created mask patterns or enlarged forms of the created mask patterns are combined with input image data to produce the thinned images. A logical AND of the mask patterns and the input image data may be computed for use as recording data.
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