Heat sensitive coating
AssigneeLabelon Corporation
InventorsBarry L. Marginean, Warren A. Hookway, Jr.
Life of this patent
Estimating the term…
Abstract
A heat-sensitive coating composition for a thermo-responsive printing or recording record material for thermal printing devices comprising a color-forming amount of a finely divided solid chromogenous basic 3, 3-bisarylphthalane derivative, and a color-developing amount of a finely divided solid phenol derivative which at thermal printing temperature is at least partially fluidizable and capable of a color-forming reaction with the chromogenous 3,3-bisarylphthalane derivative distributed in a carrier composition comprising a substantially water soluble anionic polysaccharide gum and a stability enhancing amount of sucrose benzoate.
Claims13
A heat-sensitive coating composition for a thermo-responsive printing or recording record material for thermal printing devices which comprises:
- a color-forming amount of a finely divided solid chromogenous basic 3,3-bisarylphthalane derivative, and
- a color-developing amount of a finely divided solid phenol derivative which at thermal printing temperature is at least partially fluidizable and capable of a color-forming reaction with the chromogenous 3,3-bisarylphthalane derivative distributed in a carrier composition comprising a substantially water soluble anionic polysaccharide gum and a stability enhancing amount of sucrose benzoate.
A composition for preparing heat-sensitive coating for thermo-responsive record material for thermal printing devices which comprises
- a chromogenous mixture comprising a color-forming amount of a finely divided solid basic 3,3-bisarylphthalane derivative, gum arabic, a stability enhancing amount of sucrose benzoate, and a separate color-developer mixture comprising a color-developing amount of a finely divided solid phenol derivative which at thermal printing temperature is at least partially fluidizable and capable of a color-forming reaction with the chromogenic 3,3-bisarylphthalane and gum arabic.
Dependencies are inferred from the claim text.