Dot printer for reproduction of halftone images
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United States of America Patent
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Jul 19, 1983
Grant Date -
N/A
app pub date -
Jul 30, 1981
filing date -
Jul 31, 1980
priority date (Note) -
Expired
status (Latency Note)
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Abstract
To overcome the tendency of the recording head of a dot printer to become inoperative in a range below a threshold level, a gray scale input signal is modulated with an oscillating signal so that the modulated signal oscillates above and below the threshold level to reproduce halftone values below the otherwise inoperative range.
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