4-Hydroxyalkyl-substituted 3-pyrazolidinone electron transfer ag

Radiation imagery chemistry: process – composition – or product th – Transfer procedure between image and image layer – image... – Diffusion transfer process – element – or identified image...

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430440, 430483, 430543, 430559, G03C 554, G03C 142, G03C 530, G03C 700

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active

044710453

ABSTRACT:
Photographic elements, film units, processes and alkaline processing compositions are described wherein certain 4-hydroxyalkyl-substituted 3-pyrazolidinones are employed as electron transfer agents in black-and-white and color image transfer materials. The silver halide electron transfer agents or precursors thereof have the following formula: ##STR1## wherein: n is 1 or 2;

REFERENCES:
patent: 3221023 (1965-11-01), De Marle et al.
patent: 3247201 (1966-04-01), De Marle et al.
patent: 3453109 (1969-07-01), Lee
patent: 4076529 (1978-02-01), Fleckenstein et al.
patent: 4209580 (1980-06-01), McCreary et al.
Research Disclosure, vol. 161, Sep., 1977, Item, 16139, p. 26.

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