An ink comprising a liquid medium and a colorant, wherein the liquid
medium comprises water and a water-miscible organic solvent and the
colorant is of Formula (1), wherein the colorant is dissolved in the
liquid medium: Formula (1) wherein: each independently is a
water-solubilising group selected from sulfo, carboxy, phosphato and
poly(ethylene oxide); each Z independently is optionally substituted
alkyl, optionally substituted aryl or optionally substituted aralkyl;
each Q independently is a direct bond or --NR-- wherein R is H,
optionally substituted aryl or optionally substituted alkyl; rings A,B,C
and D are each independently unsubstituted or carry a substituent
selected from optionally substituted alkyl, optionally substituted aryl
and optionally substituted aralkyl; each n independently is from 1 to 3;
and each m independently is 0, 1 or 2; provided that when either or both
of the groups represented by Q is a direct bond then at least one n has a
value of at least 2. Also colourants and ink-jet printing processes,
cartridges and prints ##STR00001##