Printing activator test circuit generating back EMF

Details Printing activator test circuit generating back EMF Printing activator test circuit generating back EMF

1986-04-08

1987-11-17

Eickholt, E. H.

Printing

Selective or progressive

Bed and platen machines

101 9329, 400 54, 4001572, 361157, 324 59, 324 73R, 340664, 340515, B41J 938

Patent

active

047065613

ABSTRACT:
Detecting the inoperability of a plurality of printing element drivers without printing involving sequentially energizing each of the drivers with a shortened time duration pulse sufficient to produce a signal in indicating operability and/or inoperability but not sufficient to cause printing.

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patent: 4556926 (1985-12-01), Yanagida
patent: 4579467 (1986-04-01), Furukawa
patent: 4595935 (1986-06-01), Brooks et al.
patent: 4612638 (1986-09-01), Kissel
patent: 4649341 (1987-03-01), Ulbricht

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