Defective nozzle detector and image forming apparatus and system
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United States of America Patent
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Aug 26, 2014
Grant Date -
Dec 8, 2011
app pub date -
Jun 1, 2011
filing date -
Jun 3, 2010
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A defective nozzle detector is included in an inkjet recording apparatus in which a plurality of nozzles to discharge droplets is provided and a recording head including the plurality of nozzles scans while moving in a main scanning direction, thereby forming an image. The defective nozzle detector includes a sensor board on which droplets are impacted from the nozzle of the recording head, a plurality of sensor electrodes and a common electrode alternately disposed on the sensor board and arranged in patterns that intersect the main scanning direction of the recording head, and an electrostatic capacitance sensor to detect changes in the electrostatic capacitance between the sensor electrode and the common electrode.
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