Abstract: Dye compositions and aqueous inks derived therefrom, especially suitable for use in ink jet printing in which the dye composition contains (a) one or more dyes which, in the free acid form, are of Formula (1): ##STR1## wherein W is H or COOH;X is H or COOH;Y is H or COOH;U & Z are each independently H, COOH or SO.sub.3 H; andV is H or SO.sub.3 H;and (b) one or both dyes which in the free acid form is of Formula (2): ##STR2## wherein A is NH.sub.2 and B is OH; orA is OH and B is NH.sub.2.

Abstract: Black compounds of Formula (1) having enhanced solubility in polar organic liquids which are useful as ink colorants in conventional and hot melt ink-jet printing and automatic identification, as black colorants for toners and thermal wax transfer sheets and as charge control agents for electrophotographic toners; ##STR1## wherein R is H, C.sub.1-4 alkyl, C.sub.1-4 alkoxy, aryl, C.sub.4-8 cycloalkyl, --CN, --NO.sub.2, halogen, --COOR.sup.1, --OH, --SH or --SO.sub.3 A;R.sup.1 is A, C.sub.1-4 -alkyl or aryl;R.sup.2 is --NH.sub.2, --OH or --SO.sub.3 A;R.sup.3 is --NH.sub.2 or --OH;R.sup.4 is --NH.sub.2, --OH, --SO.sub.3 A or H; andA is NQ.sub.4 in which at least one Q is a branched chain fatty C.sub.6-20 -aliphatic group.

Abstract: An ink for ink-jet printing comprising a solution of C.I. Direct Black 168.