Processing liquid with combination of toners for silver complex

Details Processing liquid with combination of toners for silver complex Processing liquid with combination of toners for silver complex

1990-05-17

1992-06-23

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, 430249, 430251, 430455, 430449, 430486, 430487, 430490, 430492, 430965, G03C 554, G03C 546

Patent

active

051242290

ABSTRACT:
An aqueous alkaline processing liquid suitable for use in the silver complex diffusion transfer reversal (DTR-) process, wherein said liquid contains one or more alkanolamines, the said alkanolamine(s) consisting of one or more tertiary alkanolamines in an amount in the range from 0.3 mol to 1.5 mol/l, and one or more secondary alkanolamines in an amount from 0 mol % to 5 mol % with respect to the amount of tertiary alkanolamine(s), and said liquid also contains a mixture of a silver image toning agent A being 1-phenyl-1H-tetrazole-5-thiol or a tautomer thereof and at least one other silver image toning agent B being a 1-phenyl-1H-tetrazole-5-thiol or a tautomer thereof, wherein the phenyl nucleus is substituted with halogen, the toning agent A and toning agent(s) B being present in said liquid in a molar ratio from 1/15 to 15/1. 885

REFERENCES:
patent: 4568634 (1986-02-01), Hayashi
patent: 4632896 (1986-12-01), Tsubai et al.

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