Patent ID: 9557710
Date: 2017-01-31
CPC Classifications: B42D,B44C,G03H

Claim:
1. A hologram transfer foil which is thermally transferrable to a transfer base member, comprising: a structure configured such that a peeling layer, a diffraction structure forming layer and an adhesive layer are stacked on one surface of a substrate, wherein the diffraction structure forming layer includes fine concaves and convexes forming a hologram or a diffraction grating, at least one of the peeling layer and the adhesive layer includes heat-conductive hidden information in a heat-conductive hidden information possession portion of the hologram transfer foil and includes identification information in a heat-conductive hidden information non-possession portion of the hologram transfer foil, and the diffraction structure forming layer is configured such that at least one of a spatial frequency of the fine concaves and convexes and a grating angle of the fine concaves and convexes is different between a first portion of the diffraction structure forming layer located in the heat-conductive hidden information possession portion and a second portion of the diffraction structure forming layer in the heat-conductive hidden information non-possession portion.