Imaje S.a.

Alain Pagnon

Laurent Farlotti

Andr&eacute; Souvignet

Jean Denis Garcin

This invention relates to an ink jet printer and a method of managing the ink quality of such a printer, wherein information on ink pressure P, temperature T, jet speed V, and the nominal ink characteristics (&rgr; (T), &mgr; (T)) is available. When the machine is started for the first time, the ink jet is varied at its nominal value and the resulting pressure is measured so as to determine the values a and b characteristic of the ink circuit, the characteristics of the utilized ink &rgr;(T), &mgr;(T), and the difference in level between the print head and the pressure transducer H. These values allow to set the desired pressure value and to take corrective action on ink quality.

Ink jet printer and method of managing the ink quality of such printer

The present invention relates to an ink circuit comprising an ink cartridge ( ), an additive cartridge ( ), a recovery tank ( ), a storage tank or accumulator ), a main filter ( ), solenoid valves ( ), an ink transfer pump ( ) equipped with a pressure/temperature sensor ( ), an air pressure regulator ( ), said ink circuit comprising a double face support unit with a hydropneumatic face and an electronic face making it possible to separate the hydraulic, pneumatic and electronic assemblies, all the functional components being fitted outside on one or other of the two faces.

Ink jet printing device and circuit

The present invention relates to a diaphragm pump comprising an entirely pneumatic control mechanism, which has a double acting jack (,), to which is connected a diaphragm (,), delivery being obtained by the pressurizing of several chambers (,), admission being obtained by the preparation of a first chamber (,), the other chambers (,) being under atmospheric pressure.

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Valence, France

Alain Pagnon