Thermal transfer ink, and thermal transfer ink ribbon

Details Thermal transfer ink, and thermal transfer ink ribbon Thermal transfer ink, and thermal transfer ink ribbon

1999-09-02

2000-05-02

Jagannathan, Vasu

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

428195, 428207, 428913, 525443, C09D 1102, B32B 516, B32B 2742, C08G 1230

Patent

active

060573856

ABSTRACT:
The present invention provides a thermal transfer ink ribbon which has good ink transferability and is capable of producing transferred images which are sharp and have high durability. As the main constituent of a binding material of thermally fusible resin, fine particles of low slipperiness which are not softened at a temperature at which the binding material is softened are contained in an ink layer 13 when the ink layer 13 is deposited to produce a thermal transfer ink ribbon 1. Since the thermally fusible resin is used, the durability of transferred images is high. Because the fine particles are contained, the ink layer can be separated sharply from the thermal transfer ink ribbon 1. As the fine particles are of low slipperiness, no slippage occurs between the thermal transfer ink ribbon 1 and a transfer medium. The fine particles of low slipperiness have an average diameter ranging from 0.3 .mu.m to 3.0 .mu.m, and are made of one or more of a condensation resin of benzoguanamine and formaldehyde, a condensation resin of melamine and formaldehyde, a condensation resin of benzoguanamine, melamine, and formaldehyde, and tetrafluoroethylene. The fine particles of low slipperiness may be contained in the ink layer 13 in an amount exceeding 10% by weight and less than 60% by weight, or preferably in an amount ranging from 20% by weight to 50% by weight.

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