High solids direct thermal ink composition and method of making

Details High solids direct thermal ink composition and method of making High solids direct thermal ink composition and method of making

1996-11-05

1999-03-30

Jones, Deborah

Compositions: coating or plastic

Coating or plastic compositions

Marking

106 3118, 427288, C09D 1100

Patent

active

058882839

ABSTRACT:
A direct thermal ink composition is provided which is formed from an aqueous dispersion of an initially colorless color former and an initially colorless color developer in particulate form. The direct thermal ink composition also includes a sensitizer, where the particles of the sensitizer at least partially surround the particles of the color developer, which prevents premature color development of the ink. The thermal ink preferably has a solids content of between about 40 to 60% by weight, and is substantially free of pigments and fillers.

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T. Usami and A. Shimomura, "Transparent Thermal Film", Journal of Imaging Technology, Vol. 16, No. 6, Dec. 1990, pp. 234-237.

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