Images printed on porous media and coated with a thermal...

Details Images printed on porous media and coated with a thermal... Images printed on porous media and coated with a thermal...

2005-03-22

2005-03-22

Shewareged, B. (Department: 1774)

Stock material or miscellaneous articles

Receiver for thermal transfer ink

Thermal transfer donor attached

C428S032810, C428S032870

Reexamination Certificate

active

06869650

ABSTRACT:
The present invention is drawn to the thermal transfer overcoating of images printed on porous media, and methods of overcoating images printed on porous media. Upon use of the systems and methods of the present invention, a thermally coated print is generated that can comprise a porous media substrate having printed thereon a digitally produced image. The digitally produced image and the porous media substrate is thermally coated by an adhesive protective layer, wherein the adhesive protective layer has a tangent d that is greater than 1 and melt viscosity less than 1×105Pa.·sec. as applied above its phase transition temperature. Thus, the voids in the porous media substrate can be substantially filled, and further, substantially no tags remain on the print.

REFERENCES:
patent: 4780348 (1988-10-01), Yamamoto et al.
patent: 5397634 (1995-03-01), Cahill et al.
patent: 5681660 (1997-10-01), Bull et al.
patent: 6114027 (2000-09-01), Onishi et al.
patent: 6492005 (2002-12-01), Ohbayashi et al.

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