Detection device for detecting ejection condition of nozzles
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United States of America Patent
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Jul 24, 2007
Grant Date -
Oct 21, 2004
app pub date -
Mar 25, 2004
filing date -
Mar 25, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
When an refresh ink droplet ejected from a nozzle and deflected by an inclined electric field impinges on a orifice electrode/ink receiving member, electric charge is discharged from the refresh ink droplet, thereby an electric current is generated. A current-voltage converter/amplifier detects the electric current and outputs a detection signal. A defective-condition determining circuit determines an ejection condition of a nozzle element based on voltage value of the detection signal.
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