Method for operation of an ink jet printing head

Details Method for operation of an ink jet printing head Method for operation of an ink jet printing head

1986-07-16

1987-08-04

Hartary, Joseph W.

Recorders

Performance of multiple functions of steam and gas engines

Pressure responsive element

346140R, G01D 1516

Patent

active

046849572

ABSTRACT:
Disclosed is a method for operation of an ink jet printing head of the type wherein printing ink is discharged from a plurality of ink nozzles toward a writing surface by the aid of an electric field established between a plurality of control electrodes associated with the ink nozzles and a common electrode in opposed relation to the control electrodes. In response to a picture element signal for controlling the discharge of ink from the ink nozzles, a control pulse is generated and applied to each of the control electrodes, while a pulse bias is generated and provided to the common electrode. The pulse bias is supplied thereto only in the presence of the control pulse. The minimum width of the control pulse is established to be greater than 1/fp and smaller than 2/fp where fp is the frequency of the picture element signal.

REFERENCES:
patent: 4258371 (1981-03-01), Sekine
patent: 4555717 (1985-11-01), Miura

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