B - Operations – Transporting – 41 – M
Patent
B - Operations, Transporting
41
M
B41M 5/26 (2006.01) B41M 5/36 (2006.01) C09J 4/00 (2006.01) C09J 133/14 (2006.01) G03F 7/34 (2006.01)
Patent
CA 2098901
ADHESIVE COMPOSITION, AND IMAGING MEDIUM COMPRISING THIS ADHESIVE COMPOSITION Abstract of the Disclosure A laminar thermal imaging medium is prepared from a first element comprising a first sheet transparent to image-forming radiation and having at least a surface zone or layer of polymeric material heat-activatable upon subjection of the thermal imaging medium to brief and intense radiation, the first element carrying a layer of porous or particulate image-forming substance having cohesivity in excess of its adhesivity for the polymeric heat-activatable layer, and, on the opposed side of the layer of porous or particulate image-forming substance from the surface zone or layer, a first layer of adhesive, and a second element comprising a second sheet carrying a second layer of adhesive. One of the first and second layers of adhesive comprises a polymeric hardenable adhesive comprising a macromolecular organic binder having amino or substituted amino groups, and a photopolymerizable monomer. The first and second elements are laminated together with the first andsecond layers of adhesive in contact with one another, so forming a unitary laminar medium in which the hardenable adhesive remains in its unhardened condition and serves to reduce the tendency for the unitary laminar medium to delaminate on application of stresses to the medium. Only a short lag time, typically about 30seconds, is required between lamination and curing of the hardenable adhesive inorder to provide a strong bond between the two elements following curing.
Bloom Iris B. K.
Minns Richard A.
Polaroid Corporation
Smart & Biggar
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