G - Physics – 03 – C
Patent
G - Physics
03
C
96/185
G03C 11/12 (2006.01) G03F 7/34 (2006.01)
Patent
CA 1136474
IMAGEABLE, COMPOSITE DRY-TRANSFER SHEET Abstract An imageable composite dry-transfer sheet that comprises (a) a cover sheet transmissive to actinic radiation that has at least one oleophilic surface, (b) a photopolymerizable layer on the oleophilic surface of the cover sheet that comprises a cationically polymerizable organic material, a cationic photopolymerization initiator, and, optionally, a thermoplastic hydrocarbon resin that is chemically inert to said organic material and said initiator and (c) a base sheet with an oleophobic surface on the photopolymerizable layer wherein, after image-wise exposure to activating radiation, the interfacial adhesion of the unexposed areas of the photopolymerizable layer is greater for the cover sheet than for the base sheet; the interfacial adhesion of the exposed areas of the photopolymerizable layer is greater for the base sheet than for the cover sheet; and wherein, after separation of the cover and base sheets, the unexposed areas of the photopolymerizable layer are rendered burnishable by subsequent exposure to activating radiation through the cover sheet.
357230
Berggren William R.
Brownley Shelby J.
Minnesota Mining And Manufacturing Company
Smart & Biggar
LandOfFree
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