Sheet conveyer device
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United States of America Patent
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Jan 23, 2018
Issued Date -
N/A
app pub date -
Dec 4, 2015
filing date -
Dec 8, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
A sheet conveyer device, including a transmitter to transmit ultrasonic waves arranged on a conveyer path to face a first side of a sheet; a receiver to receive the ultrasonic waves arranged on the conveyer path to face a second side of the sheet; a measurement unit to measure an intensity of the received ultrasonic waves; and a determination unit to determine a condition of a range in the conveyer path between the transmitter and the receiver among a first condition, wherein no sheet is present in the range, a second condition, in which a sheet is present in the range, and a third condition, in which a plurality of sheets are present in the range, based on intensities of the ultrasonic waves measured by the measurement unit in a plurality of periods separately after transmission of the ultrasonic waves, is provided.
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