Direct printing apparatus with automatic cleaning of excess print particles

摘要

The present invention provides a direct printing apparatus which prevents noise at a time of operation, downsizes the apparatus, prevents decrease of strength, and enables to certainly clean remaining printing particles. An endless belt member 92 disposed between a backing electrode 44 and a printing head 50 of printing station 16, the endless belt member 92 receiving the printing particles 38 which are propelled from the printing head and cleaning means for cleaning the printing particles adhering to the surface of the endless belt member are provided, whereby the printing particles adhering to the apertures of the printing head are collected on the endless belt member so that the printing particles are recovered by the cleaning means. Concretely, the backing electrode is applied with a voltage of opposite polarity to the printing particles adhering to the printing head whereby the printing particles adhering to the apertures of the printing head is cleaned.