Patents by Inventor Bruno Barbet

Bruno Barbet has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10836163
    Abstract: 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 1st gutter for recovering drops or segments not intended for printing, a 2nd gutter for recovering drops or segments that are not deflected and not intended for printing, this 2nd gutter being mobile and comprising an input slot and at least one suction channel, a motor, to actuate the 2nd gutter 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
    Type: Grant
    Filed: June 20, 2019
    Date of Patent: November 17, 2020
    Assignee: DOVER EUROPE SÀRL
    Inventors: Damien Bonneton, Bruno Barbet, Jean-François Abadie, Camille Gobin, Florence Odin, Nesrine Rebzani, Lukas Glutz
  • Patent number: 10589518
    Abstract: The invention firstly relates to a print head of a continuous ink jet printer, comprising a first reservoir (12) and a second reservoir (22), arranged on either side of least one jet ejection nozzle (30, 301-30n) to which they are connected, and a first actuator (16, 161-16n) for applying a 1st pressure to the ink of the, or coming from the, 1st reservoir, and a second actuator (26, 261-26n) for applying a 2nd pressure to the ink of the, or coming from the, 2nd reservoir, and a controller for controlling these first and second actuators, said controller being programmed to apply a variable difference between these 2 pressures.
    Type: Grant
    Filed: April 19, 2018
    Date of Patent: March 17, 2020
    Assignee: DOVER EUROPE SARL
    Inventor: Bruno Barbet
  • Publication number: 20190389214
    Abstract: 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 1st gutter for recovering drops or segments not intended for printing, a 2nd gutter for recovering drops or segments that are not deflected and not intended for printing, this 2nd gutter being mobile and comprising an input slot and at least one suction channel, a motor, to actuate the 2nd gutter 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
    Type: Application
    Filed: June 20, 2019
    Publication date: December 26, 2019
    Inventors: Damien Bonneton, Bruno Barbet, Jean-François Abadie, Camille Gobin, Florence Odin, Nesrine Rebzani, Lukas Glutz
  • Patent number: 10442204
    Abstract: The invention relates to a circuit (100) for recovery of vaporized solvent in a cavity (5) in a print head of an inkjet printer, comprising: a double flow heat exchanger (30) comprising a first circuit between a first inlet (35) and a first outlet (36), 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 (37) and a second outlet (39), a condenser (8) with an inlet (35) with fluid coupling to the first outlet (36) from the exchanger, along the direction of circulation of the gas flow, and an outlet (86), with fluid coupling to the second inlet (37) of the double flow exchanger (30).
    Type: Grant
    Filed: December 15, 2016
    Date of Patent: October 15, 2019
    Assignee: DOVER EUROPE SÀRL
    Inventors: Pierre De Saint Romain, Adrien Marion, Jean Xing, Bruno Barbet
  • Patent number: 10406816
    Abstract: The invention relates to a circuit (100) for recovery of vaporized solvent in a cavity (5) in a print head of an inkjet printer, comprising: a double flow heat exchanger (30) comprising a first circuit between a first inlet (35) and a first outlet (36), 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 (37) and a second outlet (39), a condenser (8) with an inlet (35) with fluid coupling to the first outlet (36) from the exchanger, along the direction of circulation of the gas flow, and an outlet (86), with fluid coupling to the second inlet (37) of the double flow exchanger (30).
    Type: Grant
    Filed: December 15, 2016
    Date of Patent: September 10, 2019
    Assignee: DOVER EUROPE SÀRL
    Inventors: Pierre De Saint Romain, Adrien Marion, Jean Xing, Bruno Barbet
  • Publication number: 20190248143
    Abstract: 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.
    Type: Application
    Filed: April 29, 2019
    Publication date: August 15, 2019
    Inventor: Bruno Barbet
  • Patent number: 10336077
    Abstract: 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.
    Type: Grant
    Filed: December 15, 2016
    Date of Patent: July 2, 2019
    Assignee: DOVER EUROPE SÀRL
    Inventor: Bruno Barbet
  • Patent number: 10266715
    Abstract: 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° C. from 5 to 500 ?S/cm, still preferably a conductivity at 20° C. from 5 to 500 ?S/cm, the value of 500 ?S/cm being excluded, better a conductivity at 20° C. from 5 to 400 ?S/cm, still better a conductivity at 20° C. from 30 to 400 ?S/cm, for example from 30 to 200 ?S/cm; a dynamic viscosity at 20° 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.
    Type: Grant
    Filed: August 17, 2017
    Date of Patent: April 23, 2019
    Assignee: DOVER EUROPE SÀRL
    Inventors: Bruno Barbet, Jean-François Desse, Pierre De Saint Romain, Daniel Esteoulle, Philippe Tenaud
  • Patent number: 10118388
    Abstract: 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 (10) for ejecting ink drops, actuator means (21, 22, 32, 41, 42), in contact with the cavity, in which device the jet velocity modulation, from the nozzle (10), has a value ?Vj(ft) at the operating frequency of the cavity and the actuator, and this jet velocity modulation, at the temperature of 15° C. and at the temperature of 35° C., does not vary, in a frequency range of ±5 kHz about the operating frequency ft, outside the range of between 0.25?Vj(ft) and 4?Vj(ft).
    Type: Grant
    Filed: November 1, 2017
    Date of Patent: November 6, 2018
    Assignee: MARKEM-IMAJE HOLDING
    Inventors: Bruno Barbet, Pierre De Saint Romain
  • Publication number: 20180304619
    Abstract: The invention firstly relates to a print head of a continuous ink jet printer, comprising a first reservoir (12) and a second reservoir (22), arranged on either side of least one jet ejection nozzle (30, 301-30n) to which they are connected, and a first actuator (16, 161-16n) for applying a 1st pressure to the ink of the, or coming from the, 1st reservoir, and a second actuator (26, 261-26n) for applying a 2nd pressure to the ink of the, or coming from the, 2nd reservoir, and a controller for controlling these first and second actuators, said controller being programmed to apply a variable difference between these 2 pressures.
    Type: Application
    Filed: April 19, 2018
    Publication date: October 25, 2018
    Inventor: Bruno Barbet
  • Publication number: 20180065363
    Abstract: 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 (10) for ejecting ink drops, actuator means (21, 22, 32, 41, 42), in contact with the cavity, in which device the jet velocity modulation, from the nozzle (10), has a value ?Vj(ft) at the operating frequency of the cavity and the actuator, and this jet velocity modulation, at the temperature of 15° C. and at the temperature of 35° C., does not vary, in a frequency range of +5 kHz about the operating frequency ft, outside the range of between 0.25?Vj(ft) and 4?Vj(ft).
    Type: Application
    Filed: November 1, 2017
    Publication date: March 8, 2018
    Inventors: Bruno Barbet, Pierre De Saint Romain
  • Patent number: 9844936
    Abstract: 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 (10) for ejecting ink drops, actuator means (21, 22, 32, 41, 42), in contact with the cavity, in which device the jet velocity modulation, from the nozzle (10), has a value ?Vj(ft) at the operating frequency of the cavity and the actuator, and this jet velocity modulation, at the temperature of 15° C. and at the temperature of 35° C., does not vary, in a frequency range of ±5 kHz about the operating frequency ft, outside the range of between 0.25 ?Vj(ft) and 4 ?Vj(ft).
    Type: Grant
    Filed: April 8, 2015
    Date of Patent: December 19, 2017
    Assignee: MARKEM-IMAGE HOLDING
    Inventors: Bruno Barbet, Pierre De Saint Romain
  • Publication number: 20170342292
    Abstract: 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° C. from 5 to 500 ?S/cm, still preferably a conductivity at 20° C. from 5 to 500 ?S/cm, the value of 500 ?S/cm being excluded, better a conductivity at 20° C. from 5 to 400 ?S/cm, still better a conductivity at 20° C. from 30 to 400 ?S/cm, for example from 30 to 200 ?S/cm; a dynamic viscosity at 20° 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/cm 3.
    Type: Application
    Filed: August 17, 2017
    Publication date: November 30, 2017
    Inventors: Bruno Barbet, Jean-François Desse, Pierre De Saint Romain, Daniel Esteoulle, Philippe Tenaud
  • Patent number: 9783695
    Abstract: 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° C. from 5 to 500 ?S/cm, still preferably a conductivity at 20° C. from 5 to 500 ?S/cm, the value of 500 ?S/cm being excluded, better a conductivity at 20° C. from 5 to 400 ?S/cm, still better a conductivity at 20° C. from 30 to 400 ?S/cm, for example from 30 to 200 ?S/cm; a dynamic viscosity at 20° 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.
    Type: Grant
    Filed: September 16, 2015
    Date of Patent: October 10, 2017
    Assignee: DOVER EUROPE SÀRL
    Inventors: Bruno Barbet, Jean-François Desse, Pierre De Saint-Romain, Daniel Esteoulle, Philippe Tenaud
  • Publication number: 20170173961
    Abstract: The invention relates to a circuit (100) for recovery of vaporised solvent in a cavity (5) in a print head of an inkjet printer, comprising: a double flow heat exchanger (30) comprising a first circuit between a first inlet (35) and a first outlet (36), 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 (37) and a second outlet (39), a condenser (8) with an inlet (35) with fluid coupling to the first outlet (36) from the exchanger, along the direction of circulation of the gas flow, and an outlet (86), with fluid coupling to the second inlet (37) of the double flow exchanger (30).
    Type: Application
    Filed: December 15, 2016
    Publication date: June 22, 2017
    Inventors: Pierre De Saint Romain, Adrien Marion, Jean Xing, Bruno Barbet
  • Publication number: 20170173960
    Abstract: 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.
    Type: Application
    Filed: December 15, 2016
    Publication date: June 22, 2017
    Inventor: Bruno Barbet
  • Publication number: 20170028721
    Abstract: 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 (10) for ejecting ink drops, actuator means (21, 22, 32, 41, 42), in contact with the cavity, in which device the jet velocity modulation, from the nozzle (10), has a value ?Vj(ft) at the operating frequency of the cavity and the actuator, and this jet velocity modulation, at the temperature of 15° C. and at the temperature of 35° C., does not vary, in a frequency range of ±5 kHz about the operating frequency ft, outside the range of between 0.25?Vj(ft) and 4?Vj(ft).
    Type: Application
    Filed: April 8, 2015
    Publication date: February 2, 2017
    Inventors: Bruno Barbet, Pierre De Saint Romain
  • Publication number: 20160075897
    Abstract: 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° C. from 5 to 500 ?S/cm, still preferably a conductivity at 20° C. from 5 to 500 ?S/cm, the value of 500 ?S/cm being excluded, better a conductivity at 20° C. from 5 to 400 ?S/cm, still better a conductivity at 20° C. from 30 to 400 ?S/cm, for example from 30 to 200 ?S/cm; a dynamic viscosity at 20° 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.
    Type: Application
    Filed: September 16, 2015
    Publication date: March 17, 2016
    Inventors: Bruno Barbet, Jean-François Desse, Pierre De Saint-Romain, Daniel Esteoulle, Philippe Tenaud
  • Patent number: 9028024
    Abstract: The invention relates to a new control method for controlling the printing of a binary continuous inkjet printer provided with a printhead (20) with a set of deflection electrodes (8a, 8b; 9a, 9b) shared by all of the nozzles of the head, at least one pair of electrodes (8, 9) supplied in phase opposition relative to each other, and actuators (6) to which pulses are sent to form a distance Lbr from the plane of the nozzles (11), from the break of a jet discharged by a nozzle (3) in communication with a stimulation chamber (2) 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.
    Type: Grant
    Filed: February 8, 2012
    Date of Patent: May 12, 2015
    Assignee: Markem-Imaje
    Inventors: Bruno Barbet, Damien Bonneton
  • Publication number: 20130307891
    Abstract: The invention relates to a new control method for controlling the printing of a binary continuous inkjet printer provided with a printhead (20) with a set of deflection electrodes (8a, 8b; 9a, 9b) shared by all of the nozzles of the head, at least one pair of electrodes (8, 9) supplied in phase opposition relative to each other, and actuators (6) to which pulses are sent to form a distance Lbr from the plane of the nozzles (11), from the break of a jet discharged by a nozzle (3) in communication with a stimulation chamber (2) 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.
    Type: Application
    Filed: February 8, 2012
    Publication date: November 21, 2013
    Applicant: Markem-Imaje
    Inventors: Bruno Barbet, Damien Bonnelon