Print head driving system

Details Print head driving system Print head driving system

1987-07-27

1989-03-07

Sewell, Paul T.

Typewriting machines

Typing by other than type-face or type-die

Character formation by impact

400166, 101 9303, 101 9302, B41J 792, B41J 938

Patent

active

048101133

ABSTRACT:
A print head driving system for driving a print head having a plurality of print wire controlling magnetic circuits and a plurality of print wires respectively operatively associated with the print wire controlling magnetic circuits regulates the flight starting timing of the print wires through the regulation of respective timings for supplying driving currents to the print wire controlling magnetic circuits to be used for a preceding printing cycle and the print wire controlling magnetic circuits to be used for a succeeding printing cycle, according to control data calculated on the basis of the number of the print wires which were used for the preceding printing cycle and the number of the print wires to be used for the succeeding printing cycle so that dots are printed at expected positions to thereby provide a clear print.

REFERENCES:
patent: 4627344 (1986-12-01), Costello

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