Nucleated high contrast photographic elements containing ballast

Details Nucleated high contrast photographic elements containing ballast Nucleated high contrast photographic elements containing ballast

1991-10-17

1993-03-23

Schilling, Richard L.

Radiation imagery chemistry: process, composition, or product th

Silver halide colloid tanning process, composition, or product

430598, 430611, G03C 134, G03C 142

Patent

active

051962926

ABSTRACT:
Silver halide photographic elements which are capable of high contrast development and are especially useful in the field of graphic arts have incorporated therein a hydrazine compound which functions as a nucleator, an amino compound which functions as an incorporated booster, and a ballasted thioether isothiourea which functions to inhibit pepper fog and restrain image spread.

REFERENCES:
patent: 3220839 (1965-03-01), Herz et al.
patent: 4221857 (1980-07-01), Okutsu et al.
patent: 4272606 (1981-09-01), Mifune et al.
patent: 4975354 (1990-03-01), Machonkin et al.
patent: 5126227 (1992-06-01), Machonkin et al.

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