Method of driving ink jet type printing head

Details Method of driving ink jet type printing head Method of driving ink jet type printing head

1992-04-03

1993-11-30

Fuller, Benjamin R.

Recorders

Performance of multiple functions of steam and gas engines

Pressure responsive element

346140R, B41J 2045, B41J 2055

Patent

active

052669653

ABSTRACT:
A method of driving an ink jet type printing head is applied to a printing head which has a plurality of channels, a plurality of nozzles provided on ends of the channels and a plurality of piezoelectric elements for varying volumes of the channels in response to driving voltages so as to eject ink from each nozzle having a corresponding channel the volume of which is reduced by a corresponding one of the piezoelectric elements. The method includes the steps of applying a first driving voltage to a first group of piezoelectric elements and a second driving voltage to a second group of piezoelectric elements, and controlling a phase of at least one of the first and second driving voltages so that a predetermined phase difference exists between the first driving voltage and the second driving voltage.

REFERENCES:
patent: 4251823 (1981-02-01), Sagae
patent: 4300144 (1981-11-01), Isayama et al.
patent: 5142296 (1992-08-01), Lopez et al.

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