Silver complex diffusion transfer process using two toning agent

Details Silver complex diffusion transfer process using two toning agent Silver complex diffusion transfer process using two toning agent

1982-09-27

1984-03-13

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...

430233, 430370, 430965, G03C 554, G03C 110, G03C 140

Patent

active

044368054

ABSTRACT:
Disclosed are a developer for silver complex diffusion transfer process which contains a nitrogen-containing heterocyclic compound having a mercapto or thione group and, as substituent, an alkyl group of 4 or more carbon atoms, an aryl group, or a group having both the alkyl and aryl groups and further contains an alkali-soluble iodide in an amount such that the molar ratio of the iodide in terms of iodine to the heterocyclic compound is in the range of from 1:5 to 5:1 and a silver complex diffusion transfer process using said developer, according to which transferred silver images of improved color tone, maximum density, contrast and sharpness can be obtained.

REFERENCES:
patent: 3307944 (1967-03-01), Weyde et al.
patent: 3431108 (1969-03-01), Willems et al.
patent: 3619186 (1971-11-01), Parsons
patent: 3698900 (1972-10-01), Johnson
patent: 3702246 (1972-11-01), Ohyama et al.
patent: 4298673 (1981-11-01), Kuboteta

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