The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 25, 1976
Filed:
Dec. 27, 1973
Albert Lucien Poot, Kontich, BE;
Raymond Gerard Lemahieu, Mortsel, BE;
Wilhelmus Janssens, Aarschot, BE;
Antoine August DE Jaeger, Wilrijk, BE;
AGFA-GEVAERT N.V., Mortsel, BE;
Abstract
A pressure-recording process in which a methine dye is produced by bringing image-wise into reactive contact with the aid of pressure, a compound reacting as an acid with a dye precursor compound corresponding to the following general formula: ##EQU1## wherein: R.sub.1 represents (1) an aryl group substituted with an ether group R.sub.6 --O-- in which R.sub.6 represents a hydrocarbon group or (2) a heterocyclic group; R.sub.2 represents (1) an aryl group substituted with an ether group R.sub.6 --O-- in which R.sub.6 represents a hydrocarbon group, (2) a heterocylic group or (3) a ##EQU2## group, in which Z represents the necessary atoms to close a heterocylic nucleus, R.sub.3 represents (1) a --XH or --X--R.sub.7 group, in which X is oxygen or sulfur, and R.sub.7 is an organic group, (2) a ##EQU3## group in which each of R.sub.8 and R.sub.9 (same or different) represents hydrogen or an alkyl group, a cycloalkyl group, an aralkyl group, or an aryl group, or R.sub.8 and R.sub.9 together represent the necessary atoms to close a nitrogen-containing heterocyclic nucleus, or (3) a ##EQU4## group IN WHICH R.sub.10 represents an alkyl group or a cycloalkyly group, an aralkyl group, an aryl group or a heterocyclic group and R.sub.11 represents hydrogen or a group emumerated in the definition of R.sub.10, or R.sub.11 and R.sub.10 together represent sultam group, Each of R.sub.4 and R.sub.5 (same or different) represents hydrogen, a C.sub.1 - C.sub.5 alkyl group, a cycloalkyl group, an aralkyl group or an aryl group, n is 0 or 1, and m is 0 or 1.