Stock material or miscellaneous articles – Composite – Of polyester
Patent
1975-08-07
1977-05-24
Ansher, Harold
Stock material or miscellaneous articles
Composite
Of polyester
96 3, 96 29D, 96 84UV, 428408, 428913, 428918, 428244, G03C 184, G03C 554, B32B 2736
Patent
active
040256820
ABSTRACT:
Integral negative-positive patterns viewable without separation of the negative-positive components. Essential elements of such film units comprise a photosensitive system which after exposure and processing can provide a diffusion transfer image pattern, an image pattern receiving system and a reflection system integrated with the elements of the product so that after exposure and processing, the image pattern can be viewed as a reflection print. The image receiving system of the products of the present invention comprise a transparent support or dimensionally stable layer through which the image pattern can be viewed and the transparent support or layer is characterized in that a distinctive UV light absorption capability is integrated therewith. In the especially preferred products, the transparent layer or support additionally comprises a finely divided pigment dispersed therein which provides an effective anti-light piping capability without impairing to any substantial degree the transparency of the support or layer.
REFERENCES:
patent: 2770534 (1956-11-01), Marx
patent: 3340062 (1967-09-01), Hunter et al.
patent: 3351470 (1967-11-01), McCune
patent: 3364022 (1968-01-01), Barr
patent: 3429732 (1969-02-01), Baitinger
patent: 3460942 (1969-08-01), Rogers
patent: 3702245 (1972-11-01), Simon et al.
Cieciuch Ronald F. W.
Schlein Herbert N.
Ansher Harold
Morley John P.
Polaroid Corporation
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