Laminates, identification documents, and methods for verifying identification documents
A laminate includes: a first laminate member; a second laminate member; and a hidden print formed by printing invisible ink between the first laminate member and the second laminate member. The hidden print is configured to absorb electromagnetic radiation outside the visible range. When irradiated with electromagnetic radiation outside a visible range that has passed through at least one of the first laminate member and the second laminate member, the hidden print absorbs the electromagnetic radiation to thereby show a sign, and, when irradiated with visible light, the hidden print does not show the sign.
1. A laminate comprising:
a first laminate member;
a second laminate member; and
a hidden print formed by printing invisible ink between the first laminate member and the second laminate member, wherein
the hidden print is configured to absorb electromagnetic radiation outside a visible range,
wherein the second laminate member includes a first surface in contact with the hidden print, and a second surface, which is a surface opposite to the first surface, the laminate further comprising:
a chromogenic laminate member that is in contact with the second surface and exhibits color when irradiated with a laser beam;
a security patch that is located on a surface of the chromogenic laminate member on a side opposite to that in contact with the second surface of the second laminate member; and
a protective laminate member that covers the security patch and transmits light in the visible range;
and,
when irradiated with electromagnetic radiation outside the visible range that has passed through at least one of the first laminate member and the second laminate member, the hidden print absorbs the electromagnetic radiation to thereby show a sign, and, when irradiated with visible light, the hidden print does not show the sign.
2. The laminate of claim 1 , wherein the hidden print includes a phosphor excited by light outside the visible range.
3. The laminate of claim 1 , wherein
the first laminate member and the second laminate member are white laminate members, and
the light outside the visible range is light in an infrared range.
4. The laminate of claim 1 , wherein the hidden print includes a code including predetermined information.
5. The laminate of claim 1 , wherein
the hidden print includes a first code including predetermined information,
the chromogenic laminate member includes a second code including predetermined information as a part that develops color when irradiated with the laser beam, the second code being different from the first code, and
one of the first code and the second code includes information to be authenticated, whereas the other includes information for authenticating the information to be authenticated.
6. The laminate of claim 1 , wherein
the chromogenic laminate member includes a first partial code as a part that develops color when irradiated with the laser beam,
the hidden print includes a second partial code, and
the first partial code and the second partial code form one code.
7. An identification document obtained by personalizing the laminate of claim 1 , wherein the identification document includes owner's information for identifying an owner of the identification document.
8. The identification document of claim 7 , wherein the hidden print includes an alignment mark for positioning a region in which the owner's information is recorded in the identification document.
9. An identification document obtained by personalizing the laminate of claim 1 , wherein
the chromogenic laminate member includes owner's information for identifying an owner of the identification document as a part that develops color when irradiated with the laser beam, and
the hidden print includes a code including information associated with the owner's information.