Thermal transfer printing medium

Details Thermal transfer printing medium Thermal transfer printing medium

1994-09-19

1996-01-02

Schwartz, Pamela R.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

428195, 428484, 4284881, 4284884, 428500, 428516, 428522, 428913, 428914, B41M 526

Patent

active

054807042

ABSTRACT:
A thermal transfer printing medium is provided which includes a foundation, a release layer containing a wax, a first thermal transfer layer comprising a heat-meltable material containing 20 to 100% by weight of a resin having a glass transition point of not lower than 50.degree. C. and a melt viscosity of not higher than 1.times.10.sup.4 cps/160.degree. C., and a second thermal transfer layer comprising a heat-meltable material and having a melt viscosity of not lower than 1.times.10.sup.5 cps/160.degree. C., the release layer, the first thermal transfer layer and the second thermal transfer layer being stacked in this order on the foundation, at least one of the first and second thermal transfer layers containing a coloring agent. The thermal transfer printing medium is improved in image fixability with its bridging transferability maintained and thereby assures clear and firm print images free of voids and dropout portions even on a rough paper sheet with a low printing energy.

REFERENCES:
patent: 4840837 (1989-06-01), Tanaka et al.
patent: 4894288 (1990-01-01), Fukuda et al.
Patent Abstracts of Japan, vol. 13, No. 360 (M-858), published Aug. 11, 1989 citing Japanese patent 01,118,484, published May 10, 1989.

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