G - Physics – 03 – C
Patent
G - Physics
03
C
96/214
G03C 1/795 (2006.01) G03C 1/76 (2006.01) G03C 1/79 (2006.01) G03F 1/12 (2006.01) G03F 7/26 (2006.01)
Patent
CA 1291893
TITLE PD-2238 DISTORTION RESISTANT POLYESTER SUPPORT FOR USE AS A PHOTOTOOL ABSTRACT OF THE INVENTION Photosensitive element comprising a polyester, e.g., polyethylene terephthalate, at least 0.008 inch (0.20 mm) thick bearing on both sides a polymeric water-vapor barrier layer at least 0.00001 inch (0.00025 mm) thick of a copolymer of vinylidene chloride containing at least 80% by weight of vinylidene chloride and minor amounts of alkyl acrylate, and itaconic acid, and on at least one side of said barrier layer, a layer of a photosensitive material, e.g., silver halide emulsion, diazo or photopolymer. The element in the form of a phototool limits dimensional change within 6 hours after exposure to a 5% Relative Humidity change to no more than 0.001 inch (0.025 mm) per 24 inches (60.96 cm).
525771
Bayless John H.
Steinberg Neil I.
Thirtle James H.
Bayless John H.
E. I. Du Pont de Nemours And Company
Mccallum Brooks & Co.
Steinberg Neil I.
Thirtle James H.
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