| 摘要 |
PROBLEM TO BE SOLVED: To provide a processing system which uses a diffraction grating pattern and an s-image, containing a submicroscopic holographic and a diffraction grating of other form for security in a document, a credit card and a package.SOLUTION: In a method for forming a security product, a sheet for a substrate which has an upper and lower surface and is a constitute element of the security product, is prepared. The diffraction grating is formed on at least part of the upper surface of the substrate, a metallic ink 6 is printed on the holographic grating, the holographic diffraction grating is made to be light reflective and the diffraction grating is visible on the both sides of a film like supporting body. Then, a further color 8 is in-line printed at an ordinary print processing rate by a conventional method. |
