Imaje S.a.

Paul Bajeux

Alain Dunand

Thierry Colombat

A twin-nozzle print head for a continuous inkjet deflection printer comprises an ink drop generator assembly having two inkjet ejection nozzles, each of the nozzles having an ejection axis. Charge electrodes, deflection electrodes deflecting charged drops and a single ink drop recovery gutter for both nozzles are also provided. The ejection axes of nozzles converge at a point located on an axis of a single inlet orifice of the single recovery gutter in the vicinity of this orifice or upstream of this gutter. A printer equipped with this head prints swathes of large width with good juncture.

Converging axis dual-nozzled print head and printer fitted therewith

Printing head and printer with improved deflection electrodes

A spraying control system for an electrically conducting liquid ( ) emitted in the form of a pressurized jet ( ) through at least one nozzle ( ). The system contains apparatus for separating the liquid into drops, apparatus for electrically charging the drops and apparatus for applying an electrical deflection field to the charged drops. The system includes a first ( ) and a second ( ) monolithic element each with a continuous surface, laid out such that the continuous surfaces are facing each other and define a space ( ) between them in which the pressurized jet ( ) is emitted through the nozzle ( ). The elements ( ) include apparatus for continuously setting up potentials on the continuous surfaces to obtain the electrical charge of the drops and the electrical deflection field. The system also includes electronic control ( to ) for the potentials and apparatus for checking the intensity of electrical currents that can circulate on the continuous surfaces.

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Chatuzange le Goubet, France

Paul Bajeux