| 摘要 |
PROBLEM TO BE SOLVED: To provide an anti-counterfeit printed matter having such characteristics that a printed matter having an effect of disappearing an image when observed with transmitted light can be produced by using commercially available ink without using a special chromatic permeation ink and that the image has visibility when observed with reflected light.SOLUTION: The anti-counterfeit printed matter includes a printed image formed in at least a part of a light-transmitting substrate, the printed image including a first printed region having the same hue as that of the substrate and a color with a lower lightness than the color of the substrate. The first printed region includes a permeation image formed of an ink containing a permeable component and a chromatic image formed of a chromatic ink containing no permeable component, laminated thereon. The first printed region is visible when observed with reflected light, by the difference in lightness from that of the substrate, but is invisible when observed with transmitted light as the region turns isochromatic with the substrate.SELECTED DRAWING: Figure 1 |
