Title:
PRINTED IMAGE INSPECTION DEVICE AND PRINTED IMAGE INSPECTION METHOD
Document Type and Number:
WIPO Patent Application WO/2023/281923
Kind Code:
A1
Abstract:
The present invention provides a printed image inspection device in which color information based on environmental changes can be inspected using various convenient inspection procedures. The present invention pertains to a printed image inspection device which acquires, from an image obtained by capturing an image of a recognition target in which a dot pattern is arranged, color information for dot portions of the image, and outputs a determination result based on this color information, said inspection device having: an image input unit (31) which imports the image obtained by capturing an image of the recognition target including the dot pattern; a dot pattern recognition unit (34A) which determines matching with a pre-specified reference dot pattern; a color information acquisition unit (34B) which acquires color information from pixel data of the dot portions of the image; a correlation calculation unit (34C) which calculates the correlation between the color information data and pre-set ink reference color information data; and an ink state determination unit (34D) which determines an ink state of the recognition target on the basis of the correlation from the correlation calculation unit.
Inventors:
AIDA KOHHEI (JP)
MAEJIMA TOMOKO (JP)
OGINO MASAHIKO (JP)
MAEJIMA TOMOKO (JP)
OGINO MASAHIKO (JP)
Application Number:
PCT/JP2022/020703
Publication Date:
January 12, 2023
Filing Date:
May 18, 2022
Export Citation:
Assignee:
HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD (JP)
International Classes:
B41J29/393; B41J2/01; B41J2/08; B41J2/195; B41J3/407; C09K9/00; C09K9/02; G01N21/892
Foreign References:
| JP2018176456A | 2018-11-15 | |||
| JP2019203690A | 2019-11-28 | |||
| JP2010017918A | 2010-01-28 | |||
| JPH09263009A | 1997-10-07 | |||
| US20170160255A1 | 2017-06-08 |
Attorney, Agent or Firm:
POLAIRE I.P.C. (JP)
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