Surlay proofing method
AssigneeAmerican Hoechst Corporation
InventorsZafarullah K. Cheema, Oliver A. Barton
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AssigneeAmerican Hoechst Corporation
InventorsZafarullah K. Cheema, Oliver A. Barton
Estimating the term…
A process for making a multicolored reproduction combining overlay and surprint characteristics in which a photohardenable layer, such as a photopolymerizable layer, is cast on a semi-rigid, transparent, support film, the photohardenable layer is exposed in an appropriate exposure unit through a color negative representing one color, the exposed layer is developed to remove the unexposed areas and leave the exposed image areas, an adhesive layer, such as an acrylic adhesive, is coated on a release sheet, the coated release sheet is contacted with a receptor sheet at a temperature and pressure sufficient to transfer the adhesive to the sheet, the developed layer is contacted with the adhesive coated sheet at a temperature and pressure sufficient to transfer the image areas to the sheet and the steps of casting a photohardenable layer, exposing the layer, developing the layer and contacting the image areas with the sheet is repeated for each additional color desired.
A method of making a multicolored reproduction consisting essentially of exposing a single photopolymerizable layer comprising a mixture of at least one macromolecular binder with pendant acid groups and a first preselected color on a support sheet to light through a color separation negative for said first color, treating the exposed layer with a developing solution and removing the non-light-struck, non-image areas of said layer while leaving said light-struck image areas of said layer on said support sheet,
Dependencies are inferred from the claim text.