Ncr Corporation

Monica N Lewis

Joseph D Roth

Thomas J Obringer

Michael A Lorenz

Frank J Kenny

There is provided by the present invention a coating formulation for thermal transfer ribbons which employ active plasticizers that reduce the softening temperature of the ink layer and volatilize from the ink layer or react with components therein when heated during transfer to provide images with high scratch and smear resistance.

Low energy thermal transfer formulation

Thermally transferable printing ribbons and methods of making same fabricated by initially mixing and grinding solid ingredients together, and then emulsifying the entire mixture. Thermally transferable printing ribbons formulations in accordance with the present invention generally include one or more waxes, one or more resins, and pigments. These ingredients are ground hot in an attritor or ball mill. This mixture is then emulsified, and the resulting formulation is coated on an elongated backing element utilizing conventional coating equipment and techniques.

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Fairborn, OH, United States of America

Monica N Lewis