DIRECT PRINTING MACHINE BY INK JET ON A MEDIUM

摘要

The invention concerns a direct printing machine by ink jet on a medium, comprising one or several printing heads with spray nozzle, each head being dedicated to one shade. The invention is characterised in that the head(s) are borne by a pen carriage on the medium along three orthogonal axes X, Y and Z. Each of the heads is provided with a surge tank borne by the pen carriage, the surge tank(s) being supplied from one or several fixed tanks, the head(s) and the surge tank(s) are maintained in low pressure and the surge tanks are supplied with ink from the fixed tank(s).