Thermally-responsive record material

Details Thermally-responsive record material Thermally-responsive record material

1988-09-01

1989-09-26

Hess, Bruce H.

Record receiver having plural interactive leaves or a colorless

Having a colorless color-former, developer therefor, or...

Having nonchromogenic liquid spread-control or...

427150, 428913, 503208, 503216, 503217, 503225, B41M 518

Patent

active

048700479

ABSTRACT:
A novel thermally-responsive record material is disclosed which is resistant to image fade from one or more common external challenges including contact with common fats or oils, skin oil, carbonless solvents, plasticizers or high heat and humidity, such as in a 90.degree.F./90% humidity test. The heat-sensitive material of the invention contains a fade resistance imparting ascorbic acid ester of the formula ##STR1## where R.sup.1 is hydrogen or a straight chain or branched chain acyl group of from 9 to 22 carbons inclusive,

REFERENCES:
patent: 4470057 (1984-09-01), Glanz
patent: 4791096 (1988-12-01), Mise

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