Reduced development time color negative process and process comp

Details Reduced development time color negative process and process comp Reduced development time color negative process and process comp

1998-02-17

1999-05-11

Le, Hoa Van

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Identified radiation sensitive composition with color...

430374, 430375, 430376, 430542, 430543, 430604, 430605, G03C1/09

Patent

active

059027215

ABSTRACT:
When a color negative film is developed in 2 minutes or less at a temperature of less than 40.degree. C. and contains in overlying blue and green recording layer units high bromide silver halide grains containing from 1 to 10 mole percent iodide, based on silver, and in an underlying red recording layer unit high bromide silver halide grains containing less than 0.05 mole percent iodide, based on silver, and at least 1.times.10.sup.-6 mole per silver mole of a hexacoordination complex of a Group 8 metal and coordination ligands, at least four of the ligands being anionic and at least one of the ligands being more electronegative than halide ligands, loss of lower scale contrast in the red record attributable to the faster time of development is avoided.

REFERENCES:
patent: 5609997 (1997-03-01), Okamoto et al.
Research Disclosure, vol. 367, Nov. 1994, Item 36736.

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