Radiation imagery chemistry: process – composition – or product th – Transfer procedure between image and image layer – image... – Image layer portion transfer and element therefor
Patent
1992-11-25
1995-02-28
Bowers, Jr,, Charles L.
Radiation imagery chemistry: process, composition, or product th
Transfer procedure between image and image layer, image...
Image layer portion transfer and element therefor
430253, 430256, 430964, G03C 300
Patent
active
053936396
ABSTRACT:
A thermally imageable laminar composite comprising a pair of opposed sheets confining therebetween a frangible layer of image-forming substance partitionable to the respective sheets on separation of the sheets after thermal imaging is protected against premature stress-induced delamination by the heat bonding of the opposed sheets to one another through said image-forming substance at the periphery of said composite, said bonding being at a strength substantially greater than that required to separate said sheets in the expansive thermally imageable region confined by said periphery. A method for preparing individual units of an imageable composite, including the steps of establishing a band-like heated zone in a supply web of laminate, corresponding to the boundaries of a unit to be cut therefrom, and cutting a unit from within said band-like zone is described.
REFERENCES:
patent: 3924041 (1975-12-01), Miyayama et al.
patent: 4157412 (1979-06-01), Deneau
patent: 5169475 (1992-12-01), Tobin
patent: 5229247 (1993-07-01), McCarthy et al.
Bowers, Jr Charles L.
de Luna Renato M.
Letscher Geraldine
Polaroid Corporation
Xiarhos Louis G.
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