Ink jet printing employing reverse charge coupling

Details Ink jet printing employing reverse charge coupling Ink jet printing employing reverse charge coupling

B - Operations, Transporting

41

J

101/96

B41J 2/07 (2006.01)

Patent

CA 1166072

Abstract of the Disclosure A method and apparatus for ink jet printing are disclosed which employ reverse charge coupling to increase character height. A video signal is utilized to modulate the charge ring voltage. Via a parallel path the ink in the nozzle is reversely charged by the video signal. Thus, as the ink drops are formed their electrical charge is greater than can be ob- tained under ordinary circumstances. This permits greater deflection of the drops resulting in larger characters on the printing media at the normal dis- tance between media and nozzle or higher quality characters of the same size if the media is moved closer to the nozzle.

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