Title:
PAPER SHEET DETECTION DEVICE, PAPER SHEET DETECTION METHOD, AND PAPER SHEET PROCESSING DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/184608
Kind Code:
A1
Abstract:
A paper sheet detection device comprising: an optical sensor having a light-emitting unit that emits light, and a light-receiving unit that receives the emitted light; a storage unit that stores a first threshold value used for determining whether or not a paper sheet is present in the path of the emitted light, a target light-receiving level set as a target value of the level of light received by the light-receiving unit in the absence of the paper sheets, and a second threshold value that is set to a value that is equal to or greater than the first threshold value and less than the target light-receiving level; an estimation unit that determines whether the level of light received by the light-receiving unit is equal to or greater than the first threshold value and less than the second threshold value, and that estimates whether or not the paper sheet is present; and a light amount adjusting unit that adjusts the amount of light emitted by the light-emitting unit such that the level of the light received by the light-receiving unit becomes the target light-receiving level in the absence of the paper sheets when it is estimated that the paper sheets are absent by the estimation unit after the estimation unit determines that the level of light received by the light-receiving unit is equal to or higher than the first threshold value and less than the second threshold value.
Inventors:
IGARASHI OSAMU (JP)
TAKAHASHI HITOSHI (JP)
INAKE TORU (JP)
TAKAHASHI HITOSHI (JP)
INAKE TORU (JP)
Application Number:
PCT/JP2020/010484
Publication Date:
September 17, 2020
Filing Date:
March 11, 2020
Export Citation:
Assignee:
LAUREL BANK MACHINE CO (JP)
LAUREL MACHINERY CO LTD (JP)
LAUREL PREC MACHINES CO LTD (JP)
LAUREL MACHINERY CO LTD (JP)
LAUREL PREC MACHINES CO LTD (JP)
International Classes:
G07D7/00; B65H7/14; G07D7/121
Foreign References:
| JP2018144989A | 2018-09-20 | |||
| JP2015138437A | 2015-07-30 | |||
| JP2019047278A | 2019-03-22 | |||
| JP2018036874A | 2018-03-08 |
Other References:
See also references of EP 3940656A4
Attorney, Agent or Firm:
OIKAWA Shu et al. (JP)
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