Gas separation: apparatus – Electric field separation apparatus – With nonelectrical gas treating or conditioning means
Patent
1977-02-28
1979-03-13
Brown, J. Travis
Gas separation: apparatus
Electric field separation apparatus
With nonelectrical gas treating or conditioning means
96 95, 96109, G03C 300, G03C 106, G03C 134
Patent
active
041440714
ABSTRACT:
A silver halide photographic light-sensitive material having improved image quality which comprises at least one hydrophilic colloid layer containing at least one reducing compound, preferably having an oxidation potential less than about 1.5 volts, and at least one compound represented by the following formula (I): ##STR1## wherein A and A', which may be the same or different, each represents a hydrogen atom or an alkaline-hydrolyzable group, or A' may combine with R or Q to form a ring; and P, Q, and R, which may be the same or different, each represents a hydrogen atom, an alkyl group, an aryl group, a halogen atom, a hydroxyl group, a --Y--W group (wherein Y represents an oxygen atom or a sulfur atom, and W represents an alkyl group, an aryl group, or a heterocyclic group), an --S--Z group (wherein Z represents a heterocyclic group that is substantially photographically inert in the bonded state), or a heterocyclic group; with at least one ballasting group having at least 5 carbon atoms being contained in the molecule.
REFERENCES:
patent: 2356486 (1943-04-01), Weissberger et al.
patent: 2728661 (1953-10-01), Thirtle et al.
patent: 3379529 (1968-04-01), Porter et al.
patent: 3620746 (1971-11-01), Barr
patent: 4015988 (1977-04-01), Shiba et al.
Stabilization of Photographic Silver Halide Emul. Birr .COPYRGT.1974, Focal Press, N.Y., N.Y., pp. 115-122.
Aono Toshiaki
Hirose Takeshi
Shiba Keisuke
Shishido Tadao
Brown J. Travis
Falasco L.
Fuji Photo Film Co. , Ltd.
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