Dover Europe Sarl

Imaje S.a.

Daniel Esteoulle

Bruno Barbet

Jean-François Desse

Philippe Tenaud

Pierre De Saint-Romain

Pierre De Saint Romain

Alain Dunand

A drop generator for a printing head of a continuous inkjet printer includes at least one ink feed conduit for feeding ink into a stimulation chamber, which has a quality factor Q lower than 2 and at least one resonant frequency f; an actuator for stimulating a wall of said stimulation chamber; and at least one nozzle for ejecting a jet.

Drop formation method and device using a cavity with a degraded quality factor

A liquid composition, including a solvent, for printing with a binary deflected continuous jet printing technique, wherein upon printing the liquid composition form drops that are each: not charged by an electric field, have a zero electric charge, form a dipole under the effect of an electric field, and are then deflected by the electric field. The liquid composition has all the following characteristics: a conductivity at 20&#xb0; C. from 5 to 500 &#x3bc;S/cm, still preferably a conductivity at 20&#xb0; C. from 5 to 500 &#x3bc;S/cm, the value of 500 &#x3bc;S/cm being excluded, better a conductivity at 20&#xb0; C. from 5 to 400 &#x3bc;S/cm, still better a conductivity at 20&#xb0; C. from 30 to 400 &#x3bc;S/cm, for example from 30 to 200 &#x3bc;S/cm; a dynamic viscosity at 20&#xb0; C. from 1 to 25 cPs, preferably from 6 to 25 cPs; and a density from 0.8 to 2.5 g/cm3, preferably from 1.2 to 2.5 g/cm3.

Liquid composition, especially ink composition, for printing with a binary deflected continuous jet, with non-charged drops, use of said composition, marking method and marked substrate

This invention relates to a continuous multicolor ink jet press comprising a substrate driven by a motor and passing under at least one print head associated with a sensor and supplied by an ink circuit, a synchronization circuit, connected to a process controller and a position encoder placed on the substrate drive motor transmitting a signal to the synchronization circuit, this encoder being a high resolution position encoder. A printing system is located upstream of the printheads and which prints marks regularly on the substrate. These marks are detected by the sensor associated with the printheads.

Continuous multicolor ink jet press and synchronization process for this

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Toulaud, France

Daniel Esteoulle