Dover Europe Sarl

Jean Xing

Adrien Marion

Francis Pourtier

Bruno Barbet

Damien Bonneton

Pierre De Saint Romain

René Ferry

Thierry Jacquier

A method for operating a printhead of a continuous inkjet printer comprising: producing at least one ink jet in a cavity of the print head; electrostatically separating drops or sections of one or more of the jet intended for printing from drops or sections that do not serve for printing; exiting from the cavity drops or sections of ink intended for printing, through a slot open on the outside of the cavity; and circulating at least one flow of air along the outlet slot of the cavity in a direction essentially perpendicular to at least one jet of ink emitted by the printhead and intended for printing. The air having a water vapor pressure lower than the water vapor pressure defined by 100% relative humidity at the coldest temperature of the printer.

Ink jet print head with water protection

A device for recovery of an atmosphere containing solvent vapours from at least one ink recovery reservoir of a print machine comprising: n (n&#x2265;1) filter(s) arranged downstream from the at least one ink recovery reservoir, each filter: comprising an inlet face, an outlet face and a filter body between these two faces, and each of the filter being upstream from a condenser or other solvent extraction structure, an atmosphere output from the at least one ink recovery reservoir passing through a separator and through the inlet face, and then through the filter body and through the outlet face before being sent to the solvent extraction structure, the device further comprising at least one second reservoir to recover liquid from the separator.

Method and device for filtering the recycled atmosphere of a print head

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 device for recovery of the atmosphere containing solvent vapors from at least one ink recovery reservoir of a print machine comprising: n (n&#x2265;1) filter(s) arranged at the outlet from at least one ink reservoir (). Each filter comprises an inlet face, an outlet face, a filter body between the two faces, and conduit(s) for recovering at least part of a liquid condensed on the surface of the inlet face before this liquid has passed through it. Each filter is either: upstream from a condenser, an atmosphere output from the reservoir, passing through the inlet face, and then the filter body and the outlet face before being sent to the condenser; or downstream from the condenser, an atmosphere from the condenser passing through the inlet face, and then the filter body and the outlet face before being sent to at least one print head of the print machine, respectively.

Growing community of inventors

Bourg les Valence, France

Jean Xing