Ink jet head that makes ink droplet ejection velocity uniform wi

Details Ink jet head that makes ink droplet ejection velocity uniform wi Ink jet head that makes ink droplet ejection velocity uniform wi

1997-03-31

2000-10-03

Barlow, John

Incremental printing of symbolic information

Ink jet

Ejector mechanism

347 10, B41J 2045

Patent

active

061262781

ABSTRACT:
There is provided a condition; n.times.T.ltoreq.P.ltoreq.(n+0.4).times.T between a pulse width P of the driving voltage that is to be applied to said piezoelectric element 7 of a piezoelectric plate 6 and a time T needed for that a pressure wave of ink, which generates when the ink chamber 2 is pressurized through the piezoelectric element 7, travels through the ink chamber by a length thereof. Under the condition, each of the piezoelectric elements 7 is driven. Here, the "n" is an integral odd number (preferably, 1 or 3).

REFERENCES:
patent: 4743924 (1988-05-01), Scardovi
patent: 5764247 (1998-06-01), Asai
patent: 5764256 (1998-06-01), Zhang
patent: 5818481 (1998-10-01), Hotomi et al.

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