Ink containing water-soluble non-reactive triazinyl mono-azo dye for ink jet printing
AssigneeCanon Kabushiki Kaisha
InventorDavid Greenwood
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Abstract
A water-soluble dye, free from cellulose reactive groups, of the formula: ##STR1## wherein R.sup.1 is --(C.sub.a H.sub.2a O).sub.m (C.sub.b H.sub.2b O).sub.n H, R.sup.2 is H or --(C.sub.a H.sub.2a O).sub.m (C.sub.b H.sub.2b O).sub.n H, or R.sup.1 and R.sup.2 together with the nitrogen atom form a morpholine ring a and b are different from 1 to 8 m is from 1 to 10; n is from 0 to 9; X is the residue of a diazotizable amine Y is NR.sup.1 R.sup.2 or non-chromophoric groups OR.sup.3 or NR.sup.3 R.sup.4 in which R.sup.3 and R.sup.4 are independently selected from H, alkyl and aryl; and Z is: ##STR2## wherein M is a monovalent cation, and an ink containing the dye suitable for use in an ink jet printing process.
Claims5
An ink comprising a water-soluble dye, free from cellulose reactive groups, of the formula:
- ##STR14## wherein R.sup.1 is --(C.sub.a H.sub.2a O).sub.m (C.sub.b H.sub.2b O).sub.n H,
- R.sup.2 is H or --(C.sub.a H.sub.2a O).sub.m (C.sub.b H.sub.2b O).sub.n H, or
- R.sup.1 and R.sup.2 together with the nitrogen atom form a morpholine ring a and b are different and from 1 to 8
- m is from 1 to 10;
- n is from 0 to 9;
- X is the residue of a diazotisable amine
- Y is NR.sup.1 R.sup.2 or non-chromophoric groups OR.sup.3 or NR.sup.3 R.sup.4 in which R.sup.3 and R.sup.4 are independently selected from H, alkyl and aryl;
- and Z is:
- ##STR15## wherein M is a monovalent cation.
Dependencies are inferred from the claim text.