Recording material containing a polyhalogenated hydrocarbon photoactivator and a dye forming combination of an indolizine derivative and an aldehyde and the use thereof

Abstract

Abstract 1. A PHOTOGRAPHIC PROCESS FOR FORMING A VISIBLE IMAGE IN A RECORDING MATERIAL WHICH COMPRISES IN INTIMATE ADMIXTURE: (1) AT LEAST ONE ORGANIC POLYHALOGEN COMPOUND CORRESPONDING TO THE FOLLOWING GENERAL FORMULA: A-C(-X)(-Y)-B WHEREIN: EACH OF A, B, X AND Y IS CHLORINE, BROMINE AND IODINE, OR ONE OF A, B, X OR Y REPRESENTS AN ALKYL GROUP, AN ARYL GROUP OR AN AROYL GROUP AND THE OTHERS REPRESENT CHLORINE, BROMINE OR IODINE, OR A LEAST TWO OF A, B, X OR Y REPRESENT AN AROMATIC ACYL GROUP AND THE OTHERS REPRESENT CHLORINE, BROMINE OR IODINE, AND (2) AT KEAST ONE INDOLIZINE DERIVATIVE CORRESPONDING TO THE FOLLOWING GENERAL FORMULA: 1,2-(-Z-),3-R1,4-R2,5-R3-PYRROLE WHEREIN: Z REPRESENTS THE NECESSARY ATOMS TO CLOSE AN ADJACENT PYRIDYL NUCLEUS, R1 REPRESENTS HYDROGEN OR NITRO, EACH OF R2 AND R3 REPRESENTS HYDROGEN, AN ALKYL GROUP, AN ARALKYL GROUP, AND ALKENYL GROUP, AN ACYL GROUP, A NITRO GROUP OR A PHENYL GROUP, AT LEAST ONE OF R1 OR R3 BEING HYDROGEN, AND (3) AT LEAST ONE ALDEHYDE COMPOUND OF ONE OF THE FOLLOWING GENERAL FORMULAE: A(M)-(1,4-PHENYLENE)-CO-H WHEREIN: AM REPRESENTS A PRIMARY, SECONDARY, OR TERTIARY AMINO GROUP, 1-R4,2,3,4,5-TETRA(R5)-PYRROLE WHEREIN: ONE R5 GROUP IS -CHO AND EACH REMAINING R5 AND R4 IS HYDROGEN, AND ALKYL GROUP, OR A PHENYL GROUP, 1-R6,2-R7,3-(H-CO-)-INDOLE WHEREIN: R6 IS AN ALKYL GROUP AND R7 IS AN ALKYL GROUP OR A PHENYL GROUP, ZO-(CH=CH)N-ALD WHEREIN: Z IS HYDROGEN, A METALLIC ATOM OR AN ALKYL GROUP, N IS AN INTEGER OF AT LEAST ONE, AND ALD IS -CHO OR -CH(OR802 WHERE R8 IS AN ALKYL GROUP, SAID VISIBLE IMAGE BEING FORMED BY THE STEPS OF: IMAGEWISE EXPOSING THE RECORDING MATERIAL TO ACTIVE ELECTROMAGNETIC RADIATION OF A DOSE BEING SUFFICIENT TO BRING ABOUT A DIRECTLY VISIBLE IMGE, OR BY THE STEPS OF: IMAGEWISE EXPOSING THE RECORDING MATERIAL TO ACTIVE ELECTROMAGENETIC RADIATION OF A DOSE SUFFICIENT TO CREATE THEREIN AN AT MOST BARELY VISIBLE IMAGE WHICH HAS A SENSITIVITY IN A WAVERENGTH RANGE OUTSIDE THE INHERENT SENSITIVITY RANGE OF THE ORGANIC POLYHALOGEN COMPOUND, AND OVERALL EXPOSING THE IMAGEWISE EXPOSED RECORDING MATERIAL TO HEAT OR LIGHT WITHIN THE WAVELENGTH RANGE TO WHICH THE INITIALLY EXPOSED PORTIONS WERE MADE MORE SENSITIVE THAN THE INITIALLY NON-EXPOSED PORTIONS, TO THEREBY INCREASE THE VISIBILITY OF SAID IMAGE, OR BY THE STEPS OF: OVERALL EXPOSING THE RECORDING MATERIAL TO ELECTROMAGNETIC RADIATION OF A DOSE SUFICIENT TO BRING AOUT IN THE RECORDING MATERIAL AN INCREASE IN SPECTRAL SENSITIVITY IN A WAVELENGTH RANGE OUTSIDE THE INHERENT SENSITIVITY RANGE OF THE POLYHALOGEN COMPOUND, AND IMAGEWISE EXPOSING THE OVERALL EXPOSED RECORDING MATERIAL WITHIN THE WAVELENGTH RANGE FOR WHICH THE OVERALL EXPOSED RECORDING MATERIAL WAS MADE MORE SENSITIVE IN ORDER TO FORM A VISIBLE IMAGE CORRESPONDING WITH SAID IMAGE EXPOSED PORTIONS.

Inventors

• 👤 J Lohmann
• 👤 H Peeters
• 👤 R Ceulemans
• 👤 F Moelants

Bibliographic Details