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US 8,012,910 B2Granted
Printing method using thermal diffusion transfer, and image formed object
AssigneeDai Nippon Printing Co., Ltd.
InventorsKazutoshi Awano, Satoshi Narita
Life of this patent
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Abstract
There is provided a printing method that can provide an image formed object which can suppress a change in density of a visible dye image and a lowering in fluorescence intensity and, at the same time, is free from concave/convex of the image surface and has a latent image invisible even under visible light. The printing method comprises a first step of forming a latent image of a fluorescent dye by thermal diffusion transfer; and a second step of providing a visible dye on the latent image by thermal diffusion transfer.
Claims3
A method for printing by thermal diffusion transfer, comprising:
- a first step of forming an image of a visible dye by thermal diffusion transfer onto an image receiving layer;
- a second step of transferring a dye-receptive layer on the image;
- and
- a third step of fowling a latent image of a fluorescent dye on the dye-receptive layer by thermal diffusion transfer.
1 more element
Dependencies are inferred from the claim text.