Recording medium determination apparatus and image forming apparatus
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United States of America Patent
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Sep 15, 2015
Grant Date -
Sep 18, 2014
app pub date -
May 28, 2014
filing date -
Jun 13, 2008
priority date (Note) -
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status (Latency Note)
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Abstract
A recording medium determination apparatus that determines grammage of a recording medium by using an ultrasonic wave includes a transmission unit configured to output an ultrasonic wave having a predetermined frequency, a reception unit configured to receive the ultrasonic wave output from the transmission unit and transmitted through the recording medium and output a received signal, a calculation unit configured to calculate a signal having a peak component according to a cycle of the received signal, and a determination unit configured to determine the grammage of the recording medium based on the signal calculated by the calculation unit.
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