Image-receiving element for thermal dye transfer method
First Claim
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1. An image-receiving element for the production of a dye image by thermal dye transfer, the image-receiving element comprising in order:
- a support sheet;
a polymeric cohesively destructible security layer having a printed security pattern comprising a patterning agent and a binder therefor; and
an image-receiving layer for receiving an image in dye by a thermal transfer from a dye donor sheet;
said polymeric cohesively destructible security layer pattern being characterized by a cohesivity less than the adhesivity of such layer for each layer contiguous thereto, said printed security pattern being destroyed by attempted delamination of said image-receiving layer from said image-receiving element.
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Abstract
An image-receiving element and a method of using same in the production of images by thermal dye transfer processing, the image-receiving element comprising a support, a polymeric security layer having a printed security layer, and an image-receiving layer for receiving dye by thermal transfer from a dye donor sheet, the polymeric security layer having cohesivity less than its adhesivity for each layer contiguous and the printed security pattern being destroyed by an attempted delamination of the image-receiving layer from the image-receiving element.
85 Citations
19 Claims
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1. An image-receiving element for the production of a dye image by thermal dye transfer, the image-receiving element comprising in order:
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a support sheet; a polymeric cohesively destructible security layer having a printed security pattern comprising a patterning agent and a binder therefor; and an image-receiving layer for receiving an image in dye by a thermal transfer from a dye donor sheet; said polymeric cohesively destructible security layer pattern being characterized by a cohesivity less than the adhesivity of such layer for each layer contiguous thereto, said printed security pattern being destroyed by attempted delamination of said image-receiving layer from said image-receiving element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of preparing an identification document secure against tampering and including the steps of:
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providing an image-receiving element comprising, in order, a support sheet;
a polymeric cohesively destructible security layer having a printed security pattern comprising a patterning agent and a binder therefor; and
an image-receiving layer for receiving an image in dye by a thermal transfer from a dye donor sheet;
said polymeric cohesively destructible security layer being characterized by a cohesivity less than the adhesivity of such layer for each layer contiguous thereto, and said security pattern being destroyed by attempted delamination of said image-receiving layer from said image-receiving element;contacting the image-receiving layer of said image-receiving element with a dye donor sheet comprising a support and a thermally transferable dye; imagewise transferring said dye of said dye donor sheet to the image-receiving layer of said image-receiving element, thereby to provide a dye image-bearing layer; and separating said donor sheet and said image-bearing element from each other. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification