Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Identified backing or protective layer containing
Patent
1993-04-16
1995-02-21
Brammer, Jack P.
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Identified backing or protective layer containing
428512, 430523, 430536, 430551, G03C 1775
Patent
active
053914732
ABSTRACT:
The invention provides photographic paper having increased image stability. The invention is generally accomplished by forming a paper sheet, drying said paper in a first stage to below about 10 percent water, then applying a polyvinyl alcohol solution to both sides of said paper sheet, drying said paper in a second stage to below about 5 percent water, and then applying further polyvinyl alcohol solution to said paper and drying in a third stage. The paper then may be coated to form a silver halide photosensitive color paper. The paper contains between about 4 and about 6 weight percent of polyvinyl alcohol that is concentrated near the surface of said paper. Further, the paper has a oxygen leak rate of less than about 25 cc/m.sup.2 / day and an oxygen GTR rate of less than about 1 cc/m.sup.2 /day.
REFERENCES:
patent: 4418119 (1983-11-01), Morrow et al.
patent: 4994147 (1991-02-01), Foley et al.
patent: 5234804 (1993-08-01), Gato et al.
Research Disclosure 15162, "Photographic Processes and Products", Nov. 1976, p. 82.
James P. Casey, Pulp and Paper Chemistry and Chemical Technology, 2nd Edition, 1967, vol. II, pp. 1140-1143.
Abstract Bulletin of the Institute of Paper Chemistry, vol. 56, No. 8, Feb. 1985, p. 972, Bondarev et al.
Patent Abstracts of Japan, vol. 13, No. 587, Dec. 1989 (63 78649 abstract).
Fees Anita M.
Hagemeier Larry D.
Lacz David J.
McSweeney Gary J.
Skochdopole Todd R.
Brammer Jack P.
Eastman Kodak Company
Leipold Paul A.
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