Control system for spark-discharge recording head

Details Control system for spark-discharge recording head Control system for spark-discharge recording head

B - Operations, Transporting

41

M

B41M 5/24 (2006.01) B41C 1/05 (2006.01) B41C 1/10 (2006.01) G01B 13/12 (2006.01) G01D 15/08 (2006.01) H04N 1/032 (2006.01)

Patent

CA 2065850

An imaging head (56) for use in a spark-discharge recording apparatus, including a tracking system for monitoring and maintaining the head (56) a fixed distance away from the surface of a recording blank. The tracking system preferably measures the distance between the head (56) and the surface of the blank using a gas source (206) oriented toward the blank's surface and a pressure sensor (214) for measuring the pressure of the gas reflected therefrom. The signal produced by the pressure sensor (214) indicates the size of the gap. The pressure sensor (214) is coupled to a servo system that alters the position of the head (56) to maintain a preselected gap distance.

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