Patent ID: 7337987
Filing Date: 2008-03-04
Classification: B41J

Abstract:
1. A liquid jetting apparatus to jet a droplet of a charged liquid solution onto a base material, comprising: a liquid jetting head comprising a nozzle to jet the droplet from an edge portion, an inside diameter of the edge portion of the nozzle being more than 0.2 μm and being not more than 4 μm, and at least the edge portion of the nozzle being formed with insulating material, the nozzle being integrally formed with a nozzle plate; a liquid solution supplying section to supply the liquid solution into the nozzle; and a jetting voltage applying section to apply a jetting voltage to the liquid solution in the nozzle, the jetting voltage applying section comprising a jetting electrode provided as a layer on a back end surface of the nozzle plate, the jetting electrode having an ink passage hole positioned at a border between the liquid solution supplying section and the inside passage; wherein an inside passage length of the nozzle is set to at least not less than 50 times of the inside diameter of the nozzle at the nozzle edge portion.