The composition of the liquid ink, for distributing the binary continuous jet, a drops not loaded, use of said composition, the method of marking, and the substrate, mark.

摘要

A liquid composition, such as an ink composition, liquid at room temperature, comprising a solvent, said liquid composition being a liquid composition specifically for printing with a binary deflected continuous jet printing technique wherein said liquid composition forms upon printing drops which are not charged by an electric field, which each have a zero electric charge, which each form a dipole under the effect of an electric field, and which are then deflected by said electric field, characterized in that said liquid composition has all the following characteristics a), b) and c): a) a conductivity at 20°C from 5 to 500 µS/cm, still preferably a conductivity at 20°C from 5 to 500 µS/cm, the value of 500 µS/cm being excluded, better a conductivity at 20°C from 5 to 400 µS/cm, still better a conductivity at 20°C from 30 to 400 µS/cm, for example from 30 to 200 µS/cm; b) a dynamic viscosity at 20°C from 1 to 25 cPs, preferably from 6 to 25 cPs; and c) a density from 0.8 to 2.5 g/cm 3 , preferably from 1.2 to 2.5 g/cm 3 . The use of this liquid composition in a printer or printing head applying said printing technique. A method for treating and/or marking a substrate by projecting on this substrate said liquid composition with said printing technique. A substrate, provided with a marking or treatment obtained by drying and/or absorbing said liquid composition.