Ink-jet printing apparatus and facsimile apparatus
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United States of America Patent
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-
May 1, 2001
Grant Date -
N/A
app pub date -
May 21, 1996
filing date -
May 22, 1995
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
In an ink-jet printing apparatus employing an ejection failure detecting construction for optically detecting the number of ink droplets interrupting a light path, when a power source for an apparatus is turned on, a home position is detected. A carriage is shifted from this point at a constant speed, and ink ejection is performed sequentially within zones P1 to P2 where a photosensor is present. Then, among variations of output of the photosensor by sequential ink ejection, the number of steps S of a motor up to a timing where the maximum output Vmax is output. In a subsequent process for detecting ejection failure, ejection is performed at this position.
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Cited Art Landscape
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