| 摘要 |
<p>The device has a displacement unit for displacing a substrate e.g. paper, between working stations. Multiple nozzles (12) are placed in a module forming a print head, where each nozzle is vibrated by a piezoelectric actuator such that excitation of the actuator determines dimension and shape of drop of varnish. The actuator of one of the nozzles is connected to a controlling and adjusting device (10) that controls and adjusts shape of a voltaic wave for expulsion of the varnish drop from a tube according to viscosity and/or composition of varnish to be deposited.</p> |
