Thermal image transfer recording medium

Details Thermal image transfer recording medium Thermal image transfer recording medium

1990-11-16

1993-11-09

Ryan, Patrick J.

Stock material or miscellaneous articles

Composite

Of wax or waxy material

428195, 428206, 428337, 428409, 4284247, 428484, 428500, 428913, 428914, B32B 900

Patent

active

052601390

ABSTRACT:
A thermal image transfer recording medium is disclosed, which comprises a support; a releasing layer formed on the support, comprising a wax component; and a thermal image transfer layer formed on the releasing layer, comprising a copolymer prepared from an alkylmethacrylate and a (meth)acrylonitrile, optionally in addition thereto a vinyl monomer, with a glass transition temperature of 30.degree. C. or more, and a coloring agent, the thermal image transfer layer having fine cracks having a length of 0.8 to 8 .mu.m with the number thereof being 25 to 100 per 1000 .mu.m.sup.2 on the surface thereof. In this recording medium, the thermal image transfer layer may further comprise a crosslinked acrylic resin with a glass transition temperature of 10.degree. C. or more and a number average molecular weight of 1,000,000 or more. Furthermore, an auxiliary thermal image transfer layer comprising a thermoplastic resin with a glass transition temperature of 30.degree. C. or more may also be interposed between the releasing layer and the thermal image transfer layer.

REFERENCES:
patent: 4707395 (1987-11-01), Ueyama
patent: 4792496 (1988-12-01), Koshizuka

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