Patent ID: 7297200

Claim:
A recording fluid for recording text and images on recording media comprising at least one dye of the formula (2) wherein A and B are identical or different and are a C 6 -C 10 -aryl radical unsubstituted or substituted by 1, 2, 3 or 4 substituents selected from the group consisting of C 1 -C 6 -alkyl, hydroxyl, C 1 -C 6 -alkoxy, carboxyl, sulfo, sulfonamide, amino and C 1 -C 6 -alkylamino; or are a 5- to 7-membered aromatic heterocycle which, optionally, is benzo-fused and optionally carries 1, 2, 3 or 4 of the aforementioned substituents selected from the group consisting of C 1 -C 6 -alkyl, hydroxyl, C 1 -C 6 -alkoxy, carboxyl, sulfo, sulfonamide, amino and C 1 -C 6 -alkylamino; Y is a group which contains oxygen and/or nitrogen and, optionally, via X of the enolate function forms a 9- or 10-membered ring; X is hydrogen, a monovalent metal cation, one equivalent of a polyvalent metal cation or a C 1 -C 4 -alkyl-, phenyl- or (C 1 -C 4 )-alkoxy-(C 1 -C 4 )-alkyl-substituted ammonium ion.