Back to results
US 5,489,566 AGranted
Thermographic recording films
AssigneePolaroid Corporation
InventorsEdward J. Dombrowski, John R. McPherson, Sr.
Life of this patent
Estimating the term…
Abstract
There is described, in thermographic recording films, the use of a compound containing at least two epoxide moieties in the protective layer and/or in a layer on top of the protective layer of thermographic recording films to reduce gouging and streaking of the printed image film and to reduce head build-up on the thermal printhead.
Claims26
A thermographic recording film comprising a support carrying:
- (a) an image-forming system;
- and
- (b) a protective layer comprising at least one colloidal silica and water-insoluble binder material, said protective layer positioned above said image-forming system or positioned below the surface of said support opposite that which carries said image-forming system, said thermographic recording film additionally including a compound containing at least two epoxide moieties in said protective layer and/or in a layer adjacent to the surface of said protective layer remote from said support, the ratio of colloidal silica to the total amount of said compound containing at least two epoxide moieties and said binder material being at least 2:1 by weight.
Dependencies are inferred from the claim text.