Ink composition for thermal transfer, ink ribbon for thermal tra

Details Ink composition for thermal transfer, ink ribbon for thermal tra Ink composition for thermal transfer, ink ribbon for thermal tra

1994-08-12

1996-05-07

Michl, Paul R.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524 43, 524 44, 524366, 524445, 524449, 524451, C09D 1110

Patent

active

055147330

ABSTRACT:
An ink composition for thermal transfer using a basic dye, or a cationic dye, is disclosed. The ink composition for thermal transfer contains the basic dye and an organic high polymer, with the basic dye being dissolved or dispersed into the organic high polymer with a solubilizing agent compatible with both the basic dye and the organic high polymer. The solubilizing agent is an amphipathic compound, preferably, having an HLB value of 7 or greater. By forming an ink layer containing the ink composition for thermal transfer on a base, an ink ribbon for thermal transfer is formed. A thermal transfer target sheet having a receptor layer containing an interlayer compound substituted by an ion exchangeable with the basic dye and a binder resin is used. The ion exchangeable with the basic dye is exemplified by an organic ion, such as an organic onium ion. The ink layer of the ink ribbon for thermal transfer and the receptor layer of the thermal transfer target sheet are superposed to face each other, and the basic dye contained in the ink layer is transferred onto the receptor layer by heating.

REFERENCES:
patent: 4657590 (1987-04-01), Gamblin
patent: 4664671 (1987-05-01), Gregory

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