Patent ID: 6364463
Filing Date: 2002-04-02
Classification: B41J

Abstract:
An electrostatic ink jet recording apparatus comprising:an ink chamber receiving therein an ink containing particles of coloring material dispersed in a solvent, an ejection opening communicating with the ink chamber, an ink flow passage communicating from the ink chamber to the ejection opening, a recording electrode disposed in the ejection opening, and a counter electrode provided to face the recording electrode and for flying the ink by applying a recording signal voltage between the recording electrode and the counter electrode, wherein an angle formed between (i) a meniscus of the ink attached to a tip of the recording electrode and (ii) the recording electrode ranges from 0 to 65Â°, wherein a distance between said meniscus and said tip of the recording electrode ranges from 0 to 1500 &mgr;m, and wherein said tip of the recording electrode has a radius of curvature that ranges from 40 to 500 &mgr;m.