Matted release coat for self-wound thermal printable facestock
AssigneeMedia Solutions, Inc.
InventorsChauncey T. Mitchell, Jr., James T. Wittig, Jr.
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Abstract
A direct thermal printable facestock has an adhesive-coated back surface and a release coat applied over a layer of thermal imaging material on a front surface so the facestock can be wound and unwound without using a separate release liner. The release coat is composed of two release agents. One of the release agents is a solid such as tetrafluoroethylene ground into specifically sized particles, and the other release agent is a curable liquid such as silicone within which the particles of the solid release agent are embedded for mechanically cleaning the thermal print head.
Claims10
A roll of self-wound direct thermal printable facestock adapted for cleaning a thermal print head comprising:
- a substrate having a continuous length and front and back surfaces;
- a thermally receptive imaging layer on said front surface of the substrate;
- an adhesive layer on said back surface of the substrate;
- a release-coat layer on said thermally receptive imaging layer;
- said substrate being wound into a plurality of coils so that said adhesive layer of one coil is in contact with said release-coat layer of an adjacent coil;
- said release-coat layer comprising first and second release agents that both exhibit low adhesion to said adhesive layer;
- said first release agent having a granular composition of solid particles;
- and
- said second release agent forming a matrix for embedding said first release agent in positions for mechanically cleaning the thermal print head.
Dependencies are inferred from the claim text.