SECURITY DOCUMENT USING SECURE COLOR PATTERN, AND COPY PREVENTION METHOD USING SECURE COLOR PATTERN

摘要

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.