Positive working multilayer photosensitive tonable element
AssigneeE. I. Du Pont de Nemours and Company
InventorsAbraham B. Cohen, Roxy Fan
Life of this patent
Estimating the term…
Abstract
An improved photosensitive element comprises a cover sheet, a photoadherent layer, and a tonable contiguous layer receptive to colorant or particulate material for applications such as color proofing. Such elements are capable of producing duplicate images.
Claims28
A peel apart photosensitive element comprising in order from top to bottom, (1) a strippable cover sheet comprised of a polymeric film cover sheet which is transparent to actinic radiation, (2) a photoadherent layer comprising photohardenable material with ethylenically unsaturated or benzophenone type groups (3) a tacky, nonphotosensitive organic contiguous layer which is tonable by embedding of particulate material, and (4) a sheet support, the unexposed areas (5) of said photoadherent layer, after imagewise exposure of said element to actinic radiation, having greater adhesion to said cover sheet than to said contiguous layer, and are removable with said cover sheet, and the exposed areas (6) of said photoadherent layer having greater adhesion to said contiguous layer than to said cover sheet and are not removable with said cover sheet, said photoadherent layer being nontonable under a condition under which the contiguous layer is tonable.
Dependencies are inferred from the claim text.