Protective coating for imaging elements
AssigneeE. I. Du Pont de Nemours and Company
InventorAnchi Hou
Life of this patent
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Abstract
An element comprising, in order: (a) a removable substrate; (b) a transparent, nonphotosensitive, polymeric layer having a thickness of less than about 0.002 cm and a gloss of 45-70; said polymeric layer consisting essentially of at least one thermoplastic polymer having an elongation at break of greater than 30%, a glass transition temperature of 35.degree.-70.degree. C.; and (c) an elastomeric layer and optionally an additional, different removable substrate (d) adjacent to the elastomeric layer, wherein the polymeric layer exhibits improved adhesion to the removable substrate (a) when removable substrate (d) is removed is described.
Claims7
An element comprising in order from top to bottom:
- (a) a transparent, nonphotosensitive, polymeric layer having a thickness of less than about 0.002 cm and a gloss of 45 to 70;
- said polymeric layer consisting essentially of a thermoplastic polymer or a compatible mixture of thermoplastic polymers having an elongation at break of greater than 30%, a glass transition temperature of 35.degree. to 70.degree. C.;
- (b) a nonphotosensitive elastomeric layer;
- and
- (c) a prepress color proof.
Dependencies are inferred from the claim text.