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Photographic films |
| T986005 |
Photographic films
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| Patent Drawings: | |
| Inventor: |
Cook |
| Date Issued: |
September 4, 1979 |
| Application: |
05/971,217 |
| Filed: |
December 20, 1978 |
| Inventors: |
Cook; Alan H. (Manningtree, GB2)
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| Assignee: |
Bexford Limited (London, GB2) |
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| U.S. Class: |
430/501 |
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| International Class: |
G03C 1/91 |
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| Abstract: |
light-sensitive photographic emulsion layers of photographic films are bonded directly, i.e. without an intermediate gelatin subbing layer, to a polymeric subbing layer containing adhesion-promoting particles of an inorganic oxide such as silica having a nominal particle size of 0.001 to 10 .mu.m and present in an amount 5 to 80% by weight. The polymeric subbing layer may be corona discharge treated before the application of the photographic emulsion layer. The subbing polymer may comprise a homopolymer or copolymer of styrene; a copolymer of butadiene; a copolymer of a vinyl ester; a polyester or copolyester; a polyurethane; a copolymer comprising an acrylic acid ester and/or a methacrylic acid ester; a copolymer of vinyl chloride; or a copolymer of vinylidene chloride. The preferred film support is a polyethylene terephthalate film. |
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