| abstract |
[PROBLEMS] To provide a fusion-type thermal transfer ink ribbon which is low in cost, difficult to forge and falsify, has high security, and is easy to change a security pattern, its printing process, and judge authenticity. SOLUTION: This is a laminate of a sheet-like substrate and at least two layers of a heat-meltable ink layer containing a fluorescent pigment, wherein each heat-meltable ink layer comprises a fluorescent pigment, a heat-meltable material, and a dye material. And the softening point of the heat-fusible material is different from the emission wavelength range of the fluorescent luminescent pigment, and the softening point is selected so as to become lower in order from the sheet-like substrate side. |