Developing a silver ha1ide emulsion in contact with a heterocycl

Details Developing a silver ha1ide emulsion in contact with a heterocycl Developing a silver ha1ide emulsion in contact with a heterocycl

1975-02-10

1977-01-04

Louie, Jr., Won H.

Gas separation: apparatus

Electric field separation apparatus

Including gas flow distribution means

96 665, 96 66R, 96107, 96109, 96139, G03C 520

Patent

active

040010201

ABSTRACT:
A method for forming photographic images of particularly improved sharpness in which a photographic element is developed in the presence of an alkylene oxide polymer and a compound of the general formula ##STR1## wherein Q represents the atoms required to form an optionally substituted, defined heterocyclic ring and R is as defined in the specification, or a compound of the general formula ##STR2## wherein W is a sulfur, selenium or oxygen atom or a group >N--R.sub.3, R.sub.1, R.sub.2, and R.sub.3 each is an optionally substituted, defined alkyl group and Z represents the atoms required to form an optionally substituted, defined heterocyclic ring.

REFERENCES:
patent: 3006759 (1961-10-01), Loria et al.
patent: 3081170 (1963-03-01), Rauch et al.
patent: 3598598 (1971-08-01), Herz
patent: 3656958 (1972-04-01), Depoorter et al.
patent: 3832180 (1974-08-01), Ramsay
patent: 3895948 (1975-07-01), Shiba et al.
patent: 3901709 (1975-08-01), Ebato et al.

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