Title:
SECURITY DOCUMENT USING SECURE COLOR PATTERN, AND COPY PREVENTION METHOD USING SECURE COLOR PATTERN
Document Type and Number:
WIPO Patent Application WO/2021/100974
Kind Code:
A1
Abstract:
The present invention relates to a security document using a secure color pattern, and a copy prevention method using the secure color pattern. A security document using a secure color pattern, according to a first embodiment of the present invention, comprises: a first region, of a printing surface, on which document contents are printed; and at least one second region, of the printing surface, on which a first secure color pattern including a plurality of first colors is formed, wherein the document contents are copied by a copier according to the result of sequentially comparing each of the plurality of first colors to each of a plurality of second colors forming a second secure configuration pattern preset to the copier, each of the plurality of first colors and each of the plurality of second colors are configured to have a lightness index L* value, a chromaticness index a* value, and a chromaticness index b* value in a CIE L*a*b* color space, and the document contents are copied by the copier only when the lightness index L* value, the chromaticness index a* value, and the chromaticness index b* value for each of the plurality of first colors are the same as the lightness index L* value, the chromaticness index a* value, and the chromaticness index b* value for each of the plurality of second colors or are set within a predetermined range.
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Inventors:
LEE JAE KWON (KR)
MIN BYEONG KWON (KR)
KIM OK SU (KR)
JANG ICK SEON (KR)
KIM OG JIN (KR)
PARK CHAN YOUNG (KR)
PARK JIN HAK (KR)
MIN BYEONG KWON (KR)
KIM OK SU (KR)
JANG ICK SEON (KR)
KIM OG JIN (KR)
PARK CHAN YOUNG (KR)
PARK JIN HAK (KR)
Application Number:
PCT/KR2020/002689
Publication Date:
May 27, 2021
Filing Date:
February 25, 2020
Export Citation:
Assignee:
REPUBLIC OF KOREA MINISTRY OF NAT DEFENSE CHIEF OF KOREA ARMED FORCES PRINTING PUBLISHING DEPOT (KR)
International Classes:
H04N1/00; B42D25/30
Foreign References:
| KR101180053B1 | 2012-09-04 | |||
| KR20140070685A | 2014-06-11 | |||
| KR101339306B1 | 2013-12-09 | |||
| KR20160032056A | 2016-03-23 | |||
| JP2005269237A | 2005-09-29 |
Attorney, Agent or Firm:
KIM, Cheol (KR)
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