Gelatino silver halide emulsion layer containing a halogen substituted heterocyclic nitrogen compound,as hardener and a cysteine,methionine or cysteine as latent image regression inhibiting agent

Abstract

Abstract 1. A HARDENED SILVER HALIDE EMULSION LAYER WHICH COMPRISES SILVER HALIDE, A GELATIN BINDER AND A HARDENER SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS OF THE FORMULA 2,6-DI(X),4-R-3,4-DIHYDRO-1,3,5-TRIAZINE, 2,4-DI(X)- PYRIMIDINE, (X)2-P<(-N=P(-X)2-N=P(-X)2-N=) OR A DICHLORO OR DIBROMO SUBSTITUTED TRIAZENE WHEREIN X REPRESENTS A CHLORINE OR BROMINE ATOM AND A LATENT IMAGE REGRESSION INHIBITING COMPOUND OF THE FORMULA (-C(=B)-NH-)(2-P) (HO)(P-1)-CO-CH(-NH(-(R1)(P-1))-CH2-S- CH2-CH-NH(-(R''1)(P-1))-CO-(OH)(P-1) (-C(=B'')-NH-)(2-P) WHEREIN R1 AND R''1 INDEPENDENTLY FROM ONE ANOTHER, REPRESENT A HYDROGEN ATOM, AN ALKYL GROUP, A HYDROXYMETHYL GROUP, AN ARALKYL, A HYDROXYMETHYL BENZYL GROUP, ANALLYL GROUP, AN ALKYL-OXY-CARBONYL GROUP, AN ARALKYLOXY-CARBONYL GROUP OR AN ACYL GROUP OF THE FORMULA R2-CO-WHERE R2 IS AN ALKYL OR TRIFLUOROMETHYL GROUP, AN ARALKYL OR HYDROXYMETHYL BENZYL GROUP OR AN ARYL OR P-CHLOROPHENYL GROUP, B AND B'' REPRESENTS AN OXYGEN OR SULPHUR ATOM AND Q, Q AND K EACH IS 1 OR 2, OR A WATERSOLUBLE SALT OF A SULPHUR COMPOUND OF FORMULA (1) OR (2) THE SULPHUR COMPOUND BEING PRESENT IN AN AMOUNT RANGING FROM 0.01 TO 2.5 MILLIMOLES PER MOLE OF SILVER HALIDE PERSENT IN THE EMULSION.

Inventors

• 👤 R Jefferson

Bibliographic Details