Liquid ejection printing apparatus with varying frequency preliminary ejection
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Mar 7, 2000
Grant Date -
N/A
app pub date -
Apr 21, 1995
filing date -
Apr 26, 1994
priority date (Note) -
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status (Latency Note)
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Abstract
A liquid ejection printing apparatus quickly perform preliminary ejection with certainty. The liquid ejection printing apparatus ejects droplets of a liquid printing material through a printing head to a medium to be printed for depositing the printing material to perform printing. The liquid ejection printing apparatus performs preliminary ejection upon the onset of power supply and/or prior to initiation of printing while varying a drive frequency of the printing head during the preliminary ejection.
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Cited Art Landscape
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