Recording medium determination apparatus and image forming apparatus
AssigneeCanon Kabushiki Kaisha
InventorsTakeshi Iwasa, Tsutomu Ishida
Life of this patent
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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.
Claims1
A recording medium determination apparatus that determines grammage of a recording medium by using an ultrasonic wave, comprising:
- 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.
Dependencies are inferred from the claim text.