Color transfer photographic processes and products with indole p

Details Color transfer photographic processes and products with indole p Color transfer photographic processes and products with indole p

1986-01-21

1986-10-07

Schilling, Richard L.

Radiation imagery chemistry: process, composition, or product th

Transfer procedure between image and image layer, image...

Diffusion transfer process, element, or identified image...

430227, 430236, 430244, 430449, 430517, 548456, G03C 140, G03C 184, G03C 554, C07D40500

Patent

active

046159665

ABSTRACT:
This invention relates to diffusion transfer photographic processes adapted to be performed in the presence of ambient light and to diffusion transfer products useful in such processes wherein enhanced opacification particularly, in the green region of the visible spectrum is achieved by employing a 7-sulfonamido/5- or 6-sulfamoyl indole phthalein as the light-absorbing, pH-sensitive optical filter agent for the shorter wavelength region of the visible spectrum.

REFERENCES:
patent: 3415644 (1968-12-01), Land
patent: 3415645 (1968-12-01), Land
patent: 3415646 (1968-12-01), Land
patent: 3647646 (1972-03-01), Land
patent: 3702244 (1972-11-01), Bloom et al.
patent: 3702245 (1972-11-01), Simon et al.
patent: 4456674 (1984-06-01), Cerankowski et al.

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