Abstract: A sealed self-contained photohardenable imaging assembly comprising in order: a first transparent support; a subbing layer; an imaging layer comprising a developer material and a plurality of photohardenable microcapsules encapsulating a photohardenable composition and a color precursor wherein the imaging layer exhibits a residual stain of less than about 0.3 density units; an adhesive; and a second support which may be opaque or transparent, wherein the subbing layer is interposed between the first support and the imaging layer and the subbing layer includes a polymer having chemical moieties which bond to the microcapsules and the adhesive is interposed between the second support and the imaging layer.

Abstract: A sealed self-contained photohardenable imaging assembly comprising:a first transparent polymeric film support;a second polymeric film support which may be opaque or transparent;an imaging layer disposed between said first transparent support and said second support;a subbing layer disposed between said first transparent support and said imaging layer, said subbing including a polymer having chemical moieties which bond to said microcapsules; and an adhesive material disposed between said imaging layer and said second support;said imaging layer comprising a developer material and a plurality of microcapsules, said microcapsules encapsulating a photohardenable composition containing a color precursor, a polyethylenically unsaturated compound, a cyanine dye/borate photoinitiator and a disulfide having the formula: ##STR1## where X is selected from the group consisting of S and O except X is N when the disulfide includes one or more tetrazolyl groups; n represents 0 or 1; A represents the residue of the ring con