Multiple-electrode print head for electroerosion printers

Details Multiple-electrode print head for electroerosion printers Multiple-electrode print head for electroerosion printers

G - Physics

06

F

354/236.1

G06F 3/12 (2006.01) B41J 2/425 (2006.01) G06K 15/00 (2006.01)

Patent

CA 1109162

ABSTRACT A print head for an electroerosion printer is provided with a plurality of electrodes, each displaced laterally along the print line by a predetermined distance and using a multiplexing circuit to successively condition each of said electrodes for energization to produce a record mark. The circuit further provides for a single line commonly arranged to carry all energizing signals to all electrodes but effec- tive to initiate energization of the electrodes only upon selection by a decoder. The decoder is operable to condi- tion the individual electrodes in accordance with binary coded signals on a plurality of input lines less in number than the number of electrodes to be controlled. In addition, circuits are provided for energizing a pair of electrodes through a portion of a circuit common to both electrodes by rendering the individual electrodes of the pair responsive only to a particular polarity of electrical signal energiza- tion. This technique allows the elimination of a number of control leads originally required and reduces the cost of electrode drivers. Electrode spacing is modified slightly to accommodate the multiplexing control.

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