Photographic paper containing magnesium oxide

Details Photographic paper containing magnesium oxide Photographic paper containing magnesium oxide

1980-09-12

1984-11-13

Brammer, Jack P.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Identified backing or protective layer containing

1621814, G03C 178

Patent

active

044826281

ABSTRACT:
A photographic paper comprising a web and a photographic emulsion coated on the web wherein the web contains at least one member selected from the group consisting of weak acid salts of magnesium, calcium and zinc and oxides of magnesium, calcium and zinc as a photographic-properties improving agent in an amount of 0.01% by weight or more based on the weight of the pulp in the web is remarkably effective on reducing unfavorable influence on photographic properties caused by chemical additives in the web. Such an effect is particularly remarkable when the web contains at least one cationic additive such as cationic sizing agent, cationic strength agent, etc.

REFERENCES:
patent: 3090705 (1963-05-01), Miksits
patent: 3116147 (1963-12-01), Uber et al.
patent: 3190789 (1965-06-01), Taylor
patent: 3220918 (1965-11-01), Shisko
patent: 3253922 (1966-05-01), Chu et al.
patent: 3730830 (1973-05-01), Digcoll
patent: 3746564 (1973-07-01), Parsons
patent: 3758376 (1973-09-01), Beckner et al.
patent: 4110155 (1978-08-01), Minagawa
Casey, Pulpand Paper, second ed. vol. 11, 1960 pp. 994-995.

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