Mixtures of reactive dyes and their use

A process for printing of a substrate comprising spraying individual droplets of an aqueous ink onto the substrate from a nozzle in a controlled manner wherein the aqueous ink comprises a dye mixture consisting of

• at least one dye of formula
• and at least one dye from the group of formulae
• and optionally an additive selected from sodium chloride, dextrin, a buffer, a dispersant, an anti-dust, an organic solvent, a solubilizer, a thickener, a surfactant, a humectant, an anti-foam, a preservative, a fluorinated polymer, a telomer and a mixture thereof,
• wherein
• (R1) is sulfo,
• R2 is C1 alkoxy,
• R3, R4 and R5 are each hydrogen,
• one of the radicals Q1 and Q2 is amino and the other of the radicals Q1 and Q2 is hydroxy,
• X1 is chlorine,
• Y1 and Y3 are each a fibre-reactive radical of formula
• —SO2—Z (5a),
• T1 is a fibre-reactive radical of formula
• Z is a —CH2—CH2-U radical and U is a group that is removable under alkaline conditions,
• b is 1,
• and k is 1.