Recording material determination device and image forming apparatus
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United States of America Patent
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-
Jun 16, 2015
Grant Date -
Jan 26, 2012
app pub date -
Jul 8, 2011
filing date -
Jul 20, 2010
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A recording material determination device includes an ultrasonic wave transmission unit configured to transmit an ultrasonic wave to a recording material based on a driving signal, an ultrasonic wave receiving unit configured to receive the ultrasonic wave, a light exposure unit configured to expose the recording material to light, a light receiving unit configured to receive light, an amplification unit configured to amplify an ultrasonic wave received by the ultrasonic wave receiving unit to a first output value, and after the amplification unit amplifies the ultrasonic wave received by the ultrasonic wave receiving unit to the first output value, a control unit performs control so as to obtain the second output value by the light exposure unit and the light receiving unit during a period of time after the amplification of the ultrasonic wave is stopped and before the next ultrasonic wave comes to be transmittable.
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