Heat-Sensitive record material
AssigneeAppleton Papers Inc.
InventorRobert John Kalishek
Life of this patent
Estimating the term…
Abstract
The invention describes a heat sensitive recording material comprising a paper or film substrate having coated thereon a thermally sensitive color forming composition. The thermally sensitive color forming composition comprises a chromogenic dye precursor, and an acidic developer material. A high hydrolysis adhesive material is advantageously employed as a basecoat or in the color forming composition. The high hydrolysis adhesive material has a hydrolysis of at least 99% and yields a heat sensitive recording material of low background discoloration which is useful in wet offset UV cured printing.
Claims21
A non-topcoated heat-sensitive recording material comprising a substrate having coated thereon a thermally sensitive color forming composition in one or more layers, the thermally sensitive color forming composition comprising a chromogenic dye precursor, and an acidic developer material, and a binder material, the binder material comprising a high hydrolysis adhesive material having a hydrolysis degree of at least 99%.
A non-topcoated heat-sensitive recording material comprising a substrate having coated thereon a thermally-sensitive color forming composition in one or more layers, the thermally sensitive color forming composition comprising a chromogenic dye precursor, an acidic developer material and a binder material, and at least 4% by weight of the binder material comprising a hydrolyzable vinyl ester having a hydrolysis of degree of 99% or greater.
Dependencies are inferred from the claim text.