Electronic control for timing hammers in impact printers

Details Electronic control for timing hammers in impact printers Electronic control for timing hammers in impact printers

1979-10-15

1981-09-01

Coven, Edward M.

Printing

Selective or progressive

Bed and platen machines

101 9314, 400303, B41J 792

Patent

active

042865166

ABSTRACT:
An electronic system is disclosed for use in adjusting the spacing between columns of print produced by impact printers and the like. The system adjusts the spacing electronically by use of digital logic which varies the timing between high current pulses which, in turn, drive hammers in the impact printers. With this system, timing of the high current pulses is delayed to increase the spacing and timing is advanced to decrease the spacing.

REFERENCES:
patent: 3303775 (1967-02-01), Gianvzzi
patent: 3759363 (1973-09-01), Castle et al.
patent: 3858509 (1975-01-01), Grundherr
patent: 3866533 (1975-02-01), Gilbert et al.
patent: 4055117 (1977-10-01), MunAux
patent: 4083299 (1978-04-01), Norton
patent: 4213714 (1980-07-01), Jones et al.
Barrow et al., IBM Tech. Discl. Bulletin, vol. 19, No. 8, Jan. 1977, pp. 3107-3108.

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