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Paper multi-feed detection apparatus and paper multi-feed detection method

A detection equipment, paper technology, applied in the direction of object supply, pile separation, function indication, etc., can solve the problems of restricting the configuration shape, increasing the cost of ultrasonic sensors, reducing the degree of freedom of design, etc., to prevent interference components, stabilize emission performance, The effect of improving reception performance

Inactive Publication Date: 2008-08-27
SHARP KK
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] However, this requires the use of sound-absorbing materials to seal the emission area and reception area, thus restricting the shape of the configuration, reducing the degree of freedom in design, and increasing the cost of the ultrasonic sensor itself

Method used

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  • Paper multi-feed detection apparatus and paper multi-feed detection method
  • Paper multi-feed detection apparatus and paper multi-feed detection method
  • Paper multi-feed detection apparatus and paper multi-feed detection method

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Embodiment 1

[0027] The first embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0028] The accompanying drawing shows the built-in paper overlapping detection equipment of the copier. As shown in FIG. The conveyance passage 13 is covered by two conveyance guide plates 14 and 15 , an upper upper conveyance guide plate 14 and a lower lower conveyance guide plate 15 which are provided opposite to each other across a plane conveyance space 13 a.

[0029] In addition, the transmitter 17 of the ultrasonic sensor 16 is provided above the transmission path 13 , and the receiver 18 of the ultrasonic sensor 16 is provided below, so that the transmitter 17 and receiver 18 face each other across the transmission path 13 . The above-mentioned ultrasonic sensor 16 is set to transmit and receive directions at a certain inclination angle, and adopts a configuration form suitable for transmitting and receiving ultrasonic waves U.

[0030] ...

Embodiment 2

[0041] FIG. 3 shows an embodiment of another paper overlap detection device 31 . The copy paper overlap detection device 31 is provided with a conveying path 33 on the upper side of the device body 32 to convey the paper P planarly along the horizontal direction. The conveyance passage 33 is covered by two conveyance guide plates 34 , 35 , an upper upper conveyance guide plate 34 and a lower conveyance guide plate 35 which are arranged opposite to each other across a plane conveyance space 33 a.

[0042] In addition, the transmitter 37 of the ultrasonic sensor 36 is provided above the transmission path 33 , and the receiver 38 of the ultrasonic sensor 36 is provided below, so that the transmitter 37 and receiver 38 face each other across the transmission path 33 . The above-mentioned ultrasonic sensor 36 is set to transmit and receive directions at a certain inclination angle, and adopts a configuration form suitable for transmitting and receiving ultrasonic waves U.

[0043] ...

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Abstract

A paper multi-feed detection apparatus and a paper multi-feed detection method are provided for preventing the detection capability from being deteriorated by a noise factor and improving the detection precision even where an area around the feeding path has no extra space in terms of the shape and there are many noise-generating factors because of a demand for a smaller size of the device. An ultrasonic transmission opening formed in one of two feeding guide plates is large so as to discharge outside a reflected wave which returns through the ultrasonic transmission opening, and an ultrasonic receiving opening formed in the other feeding guide plate is smaller than a receiving face area of a receiver for receiving the ultrasonic wave.

Description

technical field [0001] The present invention relates to paper overlapping conveying detection equipment applicable to copiers, scanners and other office automation instruments. A paper overlapping conveying detection device and a paper overlapping conveying detection method are disclosed. Background technique [0002] In recent years, as a detection device for overlapping feeding of easily overlapped paper sheets, such as thin paper, a paper sheet overlapping feeding detection device using an ultrasonic sensor has appeared. When using the above-mentioned ultrasonic sensor to detect paper, the following detection performance unique to ultrasonic waves can be realized. [0003] (1) Detection is performed by a non-contact method that does not come into contact with paper, and does not interfere with paper conveyance. [0004] (2) Since paper sheets of arbitrary thickness can be detected, even if paper sheets of different thicknesses are mixed and overlapped and conveyed, dete...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65H7/12
CPCB65H7/12B65H2404/611B65H2511/524B65H2515/82B65H2553/30B65H2701/1912B65H2220/01B65H2220/03
Inventor 中条秀树中村仁数田纯子三好文德渥美英要中泽进二
Owner SHARP KK
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