Ink jet printer apparatus and method of operation

Details Ink jet printer apparatus and method of operation Ink jet printer apparatus and method of operation

G - Physics

01

D

101/96.0215

G01D 15/18 (2006.01) B41J 2/035 (2006.01) B41J 2/10 (2006.01)

Patent

CA 1062760

INK JET PRINTER APPARATUS AND METHOD OF OPERATION ABSTRACT OF THE DISCLOSURE In a magnetic ink jet printer a continuous stream of ferrofluid ink drops is projected toward a print medium. A magnetic selector located proximate the stream is operated in synchronism with the flight of the ink drops for deflect- ing individual unwanted ink drops into a drop catcher. Due to fringing effects produced by the selector when unwanted drops are selected, adjacent print drops are deflected a lesser amount from the initial stream trajectory. Print drops not affected by the fringe magnetic field produced to select unwanted drops are subjected to a compensation deflection depending on their position relative to the unwanted drops so that all print drops follow the same trajectory, after passing the magnetic selector in their travel through a vertical deflector and deposition onto the print medium.

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