Ultrasonic wave control device and recording material determining device

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United States of America Patent

PATENT NO 8875581
SERIAL NO

12966973

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Abstract

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In a device for detecting a basis weight of a recording material, an initial measurement is performed by using ultrasonic waves that have passed through the recording material, and the recording material is roughly classified first. By changing the number of pulses of the driving signal in accordance with a result of the initial measurement, the basis weight of the recording material can be detected by using ultrasonic waves suitable for the recording material, so that the detection accuracy of the basis weight of the recording material can be increased.

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Patent Owner(s)

  • CANON KABUSHIKI KAISHA

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ebihara, Shun-ichi Suntou-gun, JP 31 107
Ishida, Tsutomu Mishima, JP 110 1425
Koyama, Shoichi Susono, JP 38 399
Matsui, Norio Mishima, JP 45 393
Nakamura, Tomoharu Mishima, JP 54 429

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