Thermally-Responsive Record Material
AssigneeAppvion, Inc.
InventorsMark Robert Fisher, Fadi Selim Chakar, Yves Defrenne
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Abstract
The invention describes a thermally-responsive record material substantially free of aromatic isocyanate. The record material comprises a support having provided thereon a heat-sensitive composition comprising a substantially colorless dye precursor comprising a fluoran; and a developer material selected from the group consisting of 4,4′-diaminodiphenylsulfone and 3,3′-diaminodiphenylsulfone in combination with N-[(butylamino)carbonyl]-4-methylbenzene sulfonamide, which upon being heated react with said dye precursor to develop color, and including a binder material.
Claims15
A thermally-responsive record material, substantially free of aromatic isocyanate, the record material comprising a support having provided thereon a heat-sensitive composition comprising:
- a substantially colorless dye precursor;
- a developer material selected from the group consisting of 4,4′-diaminodiphenylsulfone and 3,3′-diaminodiphenylsulfone;
- in combination with N-[(butylamino)carbonyl]-4-methylbenzenesulfonamide;
- which upon being heated react with said dye precursor to develop color;
- and a binder material.
Dependencies are inferred from the claim text.