Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Identified backing or protective layer containing
Patent
1981-11-29
1982-10-19
Brammer, Jack P.
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Identified backing or protective layer containing
430532, 430533, 430525, 430538, 430534, 430535, 430536, 430537, 430271, G03C 178
Patent
active
043550991
ABSTRACT:
For the production of positive photographic prints a composite material in strip form is used as an intermediary to form the print images and is then adhered in a continuous procedure to a main support strip such as paper. The resultant strip is then cut to separate the individual prints. The composite material has a transparent film of biaxially-oriented plastics film not more than 50.mu. thick and water-resistant and to which photosensitive emulsions are applied, and a further layer overlying the emulsions to protect them, the further layer being adhered to the main support. This layer is reflective, as by incorporation of a white pigment, so that the image is seen through the transparent film against the background of this layer rather than the main support. The reflective layer may contain other chemicals relevant to processing.
REFERENCES:
patent: 2698239 (1954-12-01), Alles et al.
patent: 3238043 (1966-03-01), Levy
patent: 3885080 (1975-05-01), Lambert et al.
Modern Plastic Encyclopedia, vol. 40, No. 1A, Sep. 1962,, pp. 10 and 556-557.
Glafkines Photographic Chemistry, vol. 1, pp. 467-469.
Baker, Photographic Emulsion Technical, Second Ed. pp. 226-231.
Hersh et al, Photographic Science & Engineering, vol. 5, No. 1, Jan. 1961, pp. 48-54.
Brammer Jack P.
Ciba-Geigy AG
Falber Harry
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