Photosensitive materials

A photosensitive material comprising in order

• a light transmitting first carrier sheet,
• a photosensitive layer on said first carrier sheet comprising at least one member selected from the group consisting of photopolymerizable compositions, photocrosslinkable compositions and mixtures thereof,
• an image-forming non-photosensitive layer on said photosensitive layer, and
• a second carrier sheet in contact with said image-forming layer, the portion of said photosensitive layer that has been imagewise exposed to actinic light and at least part of the image-forming layer in contact with the exposed portion of said photosensitive layer being retained on said first carrier sheet, and
• the unexposed portions of said photosensitive and image-forming layers being wholly retained on said second carrier sheet following imagewise exposure to actinic radiation through said first carrier sheet and subsequent separation of said first and second carrier sheets.

A laminated photographic imaging system comprising

• a first polystyrene carrier sheet,
• a photosensitive layer comprising a mixture of 2-isopropyl thioxanthone, a cross-linkable acrylate based polymer and an oligotriacrylate, on said first sheet,
• a pigmented image-forming layer on said photosensitive layer, and
• a polyethylene carrier sheet in contact with the surface of said image-forming layer,
• the bond between said polyethylene carrier sheet and said image-forming layer prior to exposure to actinic radiation being stronger than the bond between said photosensitive layer and said first carrier sheet, the bond between said first carrier sheet and said photosensitive layer in the areas of said photosensitive layer exposed to actinic radiation becoming stronger than the bond between said image-forming layer and said polyethylene carrier sheet in said exposed areas, and the exposed areas of said photosensitive layer and at least a portion of said image-forming layer corresponding to said exposed areas are retained on said first carrier sheet on separating said first carrier sheet and said polyethylene carrier sheet after said exposure.