Fine grain silver halide emulsions with polyheteronuclear sensit

Details Fine grain silver halide emulsions with polyheteronuclear sensit Fine grain silver halide emulsions with polyheteronuclear sensit

1974-12-02

1976-07-27

Klein, David

Gas separation: apparatus

Solid sorbent apparatus

Plural solid sorbent beds

96 27H, 96 94R, G03C 110, G03C 714, G03C 102

Patent

active

039716643

ABSTRACT:
Holographic silver halide elements are disclosed comprising fine silver halide particles spectrally sensitized with dyes sensitive in the 615-660 m.mu. region. The dyes are of the formula: ##EQU1## WHEREIN Z.sub.1 and Z.sub.2 are heterocyclic rings as defined in the specification and R, R.sub.1, R.sub.2, R.sub.3 and L are defined in the specification.

REFERENCES:
patent: 2961318 (1960-11-01), Jones
patent: 3565630 (1971-02-01), Millikan et al.
patent: 3661592 (1972-05-01), Philippaerts et al.
patent: 3674499 (1972-07-01), Shiba et al.
patent: 3706566 (1972-12-01), Shiba et al.

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