Markem-imaje Holding

Dover Europe Sarl

Imaje S.a.

Markem-image Holding

Pierre De Saint Romain

Bruno Barbet

Jean-François Desse

Adrien Marion

Jean Xing

Daniel Esteoulle

Philippe Tenaud

Vincent Millot

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

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 method for managing the quality of an ink of an inkjet printer versus temperature resorting to the management of the viscosity of the ink versus temperature, the ink comprising a solvent or a mixture of solvents and the solvent or mixture of solvents representing at least 50% by mass of the total mass of the ink, wherein the viscosity of the ink at a temperature T is calculated from the following parameters: the viscosity of the ink at a single reference temperature T; the parameters K or Ln(K), and &#x2212;E/R of equation (1) giving the viscosity of the solvent or of the mixture of solvents: Ln (viscosity of the solvent)=Ln(K)&#x2212;E/RT (1) wherein E is the Arrhenius activation energy given in J/mol and R is the ideal gas constant.

Method for managing ink quality of an inkjet printer versus temperature

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 reservoir for a pigment ink for a continuous inkjet printer comprising: at least a convergent shaped part, converging towards a portion that comprises an ink flow orifice, the tangent to a wall of said convergent shaped part forming an angle from the horizontal equal to more than about 30&#xb0; and less than 90&#xb0;, when the reservoir is in its usage position, a recirculation circuit to transferring some of the ink from said convergent shaped part, and bring it back into the reservoir, through at least one transferred liquid outlet means located above the maximum ink level in the reservoir, a circuit to drawing off ink and transferring the ink thus drawn off to a print head.

Ink circuit for pigment inks

Ink composition, in particular for continuous deflected ink jet printing comprising:

Ink composition for ink jet printing

An ink that can be sprayed on an object in jets comprises:

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Valence, France

Pierre De Saint Romain