Dover Europe Sarl

Markem-Imaje Corporation

Imaje S.a.

Markem-Imaje Holding

Markem-Image Holding

Bruno Barbet

Pierre De Saint Romain

Daniel Esteoulle

Damien Bonneton

Adrien Marion

Jean-François Desse

Philippe Tenaud

Francis Pourtier

Pierre De Saint-Romain

Florence Odin

Jean Xing

Camille Gobin

Jean-François Abadie

Lukas Glutz

Nesrine Rebzani

Pierre Henon

Hervé Gregoire

Raphael Savoldi

Rudy Joly

A cleaning process for cleaning at least one part of a hydraulic circuit of a continuous inkjet printer. The hydraulic circuit includes a solvent tank and an ink tank, and hydraulic connections for sending ink and/or solvent to a print head. The cleaning process includes: a preliminary step of flushing or cleaning at least part of the ink or hydraulic circuit; and flowing or circulating the gas, and solvent, through at least one part of the hydraulic circuit and recovering dirty fluid from the at least one part of the hydraulic circuit in a recovery cartridge or in a tank.

Cleaning process for the hydraulic circuit of an ink jet printer

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 damper for a continuous ink jet printer, comprising a fluid receiving chamber (), comprising at least a lateral wall (), a fluid inlet (), and a fluid outlet (), and at least one membrane (), the membrane being in a material having a Young modulus between 0.5 MPa and 1000 MPa, the membrane being deformed under the influence of a pressure variation in the first portion.

Low cost damper

A print head of a binary continuous jet printer comprising: a plurality of nozzles for producing a plurality of ink jets in a cavity delimited by lateral walls, an upper wall and a lower wall, a sorting unit for separating drops or sections of one or more of the jets intended for printing from drops or sections that do not serve for printing, a slot, which passes through the lower wall, enabling the exit of ink drops intended for printing, a gutter for recovering drops or sections not intended for printing, a conduit for injecting gas into the cavity, and for making this gas circulate, in the cavity, to the plurality of nozzles for producing a plurality of ink jets in the cavity, then to the gutter.

Print head or ink jet printer with reduced solvent consumption

A print head of a continuous ink jet printer comprising: a cavity for the circulation of jets, at least one nozzle for producing at least one ink jet or solvent in the cavity, at least one electrode for sorting drops or segments of one or several of the jets intended for printing from drops or segments that are not used for printing, an outlet slot of the cavity, open onto the exterior of the cavity and allowing the exiting of the drops or segments of ink intended for printing, a 1gutter for recovering drops or segments not intended for printing, a 2gutter for recovering drops or segments that are not deflected and not intended for printing, this 2gutter being mobile and comprising an input slot and at least one suction channel, a motor, to actuate the 2gutter for recovering in movement between a retracted position, in which it does not close off the outlet slot of the cavity, and a closed position, in which its input slot faces the outlet slot of the cavity; a seal between the print head and the 2gutter for recovering in the closed position of the latter.

Print head of an ink jet printer with 2 gutters for recovery, of which one is mobile

The invention firstly relates to a print head of a continuous ink jet printer, comprising a first reservoir () and a second reservoir (), arranged on either side of least one jet ejection nozzle (-) to which they are connected, and a first actuator (-) for applying a 1pressure to the ink of the, or coming from the, 1reservoir, and a second actuator (-) for applying a 2pressure to the ink of the, or coming from the, 2reservoir, and a controller for controlling these first and second actuators, said controller being programmed to apply a variable difference between these 2 pressures.

Method and device for the hydrodynamic deflection of an ink jet

The invention relates to a circuit () for recovery of vaporized solvent in a cavity () in a print head of an inkjet printer, comprising: a double flow heat exchanger () comprising a first circuit between a first inlet () and a first outlet (), for a gas flow from said cavity, this exchanger comprising a second circuit thermally coupled to the first circuit and located between a second inlet () and a second outlet (), a condenser () with an inlet () with fluid coupling to the first outlet () from the exchanger, along the direction of circulation of the gas flow, and an outlet (), with fluid coupling to the second inlet () of the double flow exchanger ().

Inkjet printer with improved solvent recovery circuit

The invention relates to a print head of a binary continuous jet printer comprising: means for producing a plurality of ink jets in a cavity, delimited by lateral walls, and by an upper wall and a lower wall, means for separating drops or sections of one or more of said jets intended for printing from drops or sections that do not serve for printing, a slot, which passes through the lower wall, enabling the exit of ink drops intended for printing, a gutter for recovering drops or sections not intended for printing, means for injecting gas into the cavity, and for making this gas circulate, in the cavity, to the means for producing a plurality of ink jets in said cavity, then to the gutter.

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

A device for forming and ejecting drops of an ink jet of a CIJ printing machine, this device including: a cavity for containing an ink and including an end provided with a nozzle () for ejecting ink drops, actuator means (), in contact with the cavity, in which device the jet velocity modulation, from the nozzle (), has a value &#x394;Vj(f) at the operating frequency of the cavity and the actuator, and this jet velocity modulation, at the temperature of 15&#xb0; C. and at the temperature of 35&#xb0; C., does not vary, in a frequency range of &#xb1;5 kHz about the operating frequency f, outside the range of between 0.25&#x394;Vj(f) and 4&#x394;Vj(f).

Sturdy drop generator

A device for forming and ejecting drops of an ink jet of a CIJ printing machine, this device including: a cavity for containing an ink and including an end provided with a nozzle () for ejecting ink drops, actuator means (), in contact with the cavity, in which device the jet velocity modulation, from the nozzle (), has a value &#x394;Vj(f) at the operating frequency of the cavity and the actuator, and this jet velocity modulation, at the temperature of 15&#xb0; C. and at the temperature of 35&#xb0; C., does not vary, in a frequency range of &#xb1;5 kHz about the operating frequency f, outside the range of between 0.25 &#x394;Vj(f) and 4 &#x394;Vj(f).

The invention relates to a new control method for controlling the printing of a binary continuous inkjet printer provided with a printhead () with a set of deflection electrodes () shared by all of the nozzles of the head, at least one pair of electrodes () supplied in phase opposition relative to each other, and actuators () to which pulses are sent to form a distance Lbr from the plane of the nozzles (), from the break of a jet discharged by a nozzle () in communication with a stimulation chamber () to which said actuator is mechanically coupled, drops not able to be electrically charged or jet segment subjected to the electrostatic influence of the deflection electrodes. According to the invention, the pulses are controlled so as to minimize the total electrical charge taken on by the ink jet segments inside a volume of influence of the electrodes.

Binary continuous inkjet printer with a decreased printhead cleaning frequency

A continuous ink-jet printer or a print head of such a printer which includes electrical means for compensating for mechanical crosstalk between adjacent stimulation chambers, where these means simultaneously with the transmission, to a stimulated chamber, of a stimulation pulse on a stimulation line send a pulse for compensating for mechanical crosstalk on each of the lines supplying an actuator for the chamber adjacent to the stimulated chamber. Specific ratios between the peak amplitude of pulse for compensating for crosstalk and the peak voltage value of the stimulation pulse are provided as a function of the gaps between consecutive nozzles.

Continuous ink-jet printing device, with improved print quality and autonomy

For printing, the principle of the continuous deflected jet is used: a device discharges a continuous stream of a liquid, which is deflected by an electric field created by a plurality of deflecting electrodes and directed toward a gutter. The printing of drops is performed by fragmenting the continuous jet into a segment formed opposite a shield electrode upstream of the deflecting electrode, so that the segment is not deflected and can be directed toward a substrate. The deflection electrodes are separated by an insulator and a variable potential is applied to each electrode; the potential for the entire set of electrodes cancels out such that the jet is not charged.

Growing community of inventors

Etoile-sur-Rhone, France

Bruno Barbet