Color photographic materials having increased speed

Details Color photographic materials having increased speed Color photographic materials having increased speed

1977-01-10

1980-01-22

Brown, J. Travis

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Two or more radiation-sensitive layers containing other than...

430506, G03C 300, G03C 176, G03C 716

Patent

active

041848764

ABSTRACT:
Color photographic materials are disclosed having red-, green- and blue-sensitive silver halide emulsion layer units, which units contain faster and slower emulsion layers for each color sensitivity. In such materials it has been found that increased speed can be obtained by manufacturing the material so that, upon imagewise exposure, light strikes the relatively faster green- and red-sensitive layers before passing to the slower green- and red-sensitive layers, but after penetrating the blue-sensitive layer(s).

REFERENCES:
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patent: 3227554 (1966-01-01), Barr et al.
patent: 3620747 (1971-11-01), Marchant et al.
patent: 3658536 (1972-04-01), Wolf
patent: 3663228 (1972-05-01), Wyckoff
patent: 3726681 (1973-04-01), Pankow et al.
patent: 3849138 (1974-11-01), Wyckoff
patent: 3930813 (1976-01-01), Shiba et al.
patent: 3930863 (1976-01-01), Shiba et al.
Focal Encyclopedia of Photography .COPYRGT. 1969, McGraw-Hill, N.Y., N.Y., p. 1689.
Zelikman and Levi, "Making and Coating Photographic Emulsions," Focal Press, 1964, pp. 233-241.
Birr, Stabilization of Photographic AgX Emulsions .COPYRGT. 1974, Focal Press, N.Y., N.Y., pp. 116, 117.

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