Title:
OPTICAL SENSOR, PAPER SHEET IDENTIFICATION DEVICE, PAPER SHEET PROCESSING DEVICE, AND LIGHT DETECTION METHOD
Document Type and Number:
WIPO Patent Application WO/2022/102583
Kind Code:
A1
Abstract:
This optical sensor detects light from a paper sheet on which is printed at least one type of monochromatic ink from among n-types of monochromatic ink, the optical sensor comprising: a light source; a light receiving unit provided with first through (n-1)-th light receiving elements; a storage unit that stores correction values based on reference data obtained as a result of light emitted by the first through the n-th monochromatic inks being received by the light receiving unit independently for each type of the monochromatic inks; and a correction processing unit that uses the correction values to perform correction processing on detection data, which is obtained as a result of light emitted by the paper sheet that has been irradiated with light from the light source being received by the light receiving unit.
Inventors:
TAKEHARA DAIKI (JP)
UEYAMA NAOKI (JP)
UEYAMA NAOKI (JP)
Application Number:
PCT/JP2021/041020
Publication Date:
May 19, 2022
Filing Date:
November 08, 2021
Export Citation:
Assignee:
GLORY KOGYO KK (JP)
International Classes:
G06T1/00; G01N21/27; G07D7/12; H04N9/07
Foreign References:
| JP2006240097A | 2006-09-14 | |||
| JP2016009445A | 2016-01-18 | |||
| JP2008243098A | 2008-10-09 | |||
| JPH09305820A | 1997-11-28 | |||
| US20170191946A1 | 2017-07-06 | |||
| JP2021149833A | 2021-09-27 | |||
| JP6469370B2 | 2019-02-13 |
Attorney, Agent or Firm:
YASUTOMI & ASSOCIATES (JP)
Download PDF: