Patent ID: 6102997
Filing Date: 2000-08-15
Classification: B41M,C09D

Abstract:
An ink jet system comprising a recording material and at least one colored ink to be applied to the recording material by means of an ink jet nozzle, at least either the material or at least one colored ink contains at least one water-soluble compound of formulae (I) or (II): ##STR24## wherein R.sub.1 is H, alkyl, aryl, alkoxy, aryloxy or hydroxy,R.sub.5 is H, alkyl, aryl, alkoxy, aryloxy or hydroxy,Z.sub.1 is C.sub.1 -C.sub.5 -alkylene,Z.sub.2 is C.sub.1 -C.sub.5 -alkylene or Z.sub.5 --X.sub.4 --Z.sub.6 --,Z.sub.3 and Z.sub.4 are identical or different and are C.sub.1 -C.sub.6 -alkylene,Z.sub.5 is C.sub.1 -C.sub.4 alkylene,Z.sub.6 is a single bond, methylene or ethylene,X.sub.1 is ##STR25## X.sub.2 is acyl, acyloxy, acylamino, carboxy, a phosphoric acid residue, alkoxy, hydroxy or alkyl,X.sub.3 is H or X.sub.2,X.sub.4 is ##STR26## R.sub.2 is H or alkyl, R.sub.3 is H, alkyl or aryl,R.sub.4 is acyl, andn is 1 or 2,wherein the compounds which contain an acid group may also exist as the salt, the heterocycle of formula (I) has 5 to 8 ring atoms, and the compounds of formulae (I) and (II) have a solubility in water of at least 1 g/l at 20.degree. C. and standard pressure, and if R.sub.5 is alkyl, said alkyl group is a straight chain or branched, substituted or unsubstituted, wherein said substituents are selected from the group consisting of hydroxy, halogeno, nitro, cyano, acyl, acyloxy, acylamino, alkoxy and aryloxy.