Radiation imagery chemistry: process – composition – or product th – Transfer procedure between image and image layer – image... – Diffusion transfer process – element – or identified image...
Patent
1982-03-23
1983-06-14
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...
430228, 430234, 430236, 430251, 430428, 430455, 430566, 430955, G03C 554, G03C 538, G03C 148
Patent
active
043883982
ABSTRACT:
This invention relates to photographic products and processes employing silver halide solvent precursors of the formula ##STR1## wherein R.sup.1 is a monovalent organic radical; R.sup.2 is hydrogen or a monovalent organic radical; Z is a moiety that undergoes .beta.-elimination in aqueous alkaline solution and preferably is a moiety that undergoes .beta.-elimination in aqueous alkaline solution to release a photographically useful reagent; and n is an integer 3, 4 or 5.
REFERENCES:
patent: 3698898 (1972-10-01), Grasshoff et al.
patent: 3932480 (1976-01-01), Grasshoff et al.
patent: 3958992 (1976-05-01), Greenwald
patent: 4126459 (1978-11-01), Greenwald
Herz et al., "Silver Halide Complexing Agents", Research Disclosure, No. 13405, 6/1975, pp. 6-8.
Borror Alan L.
Ellis Ernest W.
Campbell Sybil A.
Polaroid Corporation
Schilling Richard L.
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