Back to results
US 4,226,442 AGranted
Water insensitive image receptor coating
AssigneeFrye Copysystems, Inc.
InventorsGene D. Carlson, Gerry H. Ehrhardt
Life of this patent
Estimating the term…
Abstract
A water insensitive image receptor coating composition for pressure sensitive carbonless type transfer media.
Claims3
A pressure responsive receptor sheet for chemical type transfer media adapted to produce a moisture insensitive transferred image comprising
- planar sheet material having a nontransferable image receptor coating layer disposed on one surface thereof,
- said nontransferable image receptor coating layer comprising the solid residue of an applied homogenous liquid mixture of an evaporable liquid carrier, a hydrophobic resinous binder material selected from the group consisting of polyvinyl butyral, polyvinylacetal and polyvinyl formal, opacifier-filler material and organic dyestuff dye precursor chromogenic reagent material distributed therewithin.
A pressure responsive receptor sheet for chemical type transfer media adapted to produce a water insensitive transferred image comprising
- planar sheet material having a nontransferable image receptor coating disposed on one surface thereof,
- said nontransferable image receptor coating layer comprising
- about 45 to 75% of opacifier-filler material;
- about 5 to 45% polyvinyl butyral as a hydrophobic binder material;
- about 2 to 15% of organic dyestuff dye precursor material, and
- a small amount of alkali hydroxide to insure an alkaline cast to the coating layer.
3 more elements
Dependencies are inferred from the claim text.