Ink jet printer and printer head having means for quantifying li

Details Ink jet printer and printer head having means for quantifying li Ink jet printer and printer head having means for quantifying li

1997-12-30

1999-10-05

Fuller, Benjamin R.

Incremental printing of symbolic information

Ink jet

Ejector mechanism

347 68, 347 54, 347 21, B41J 015

Patent

active

059632267

ABSTRACT:
In the ink jet printer head and the ink jet printer of this invention, accurate gradation printing can be performed at a high speed. The ink 34 is introduced to be supplied from the ink tank to a quantified liquid chamber 8 of the quantified part 2 via a liquid supply channel 15. When voltage is applied to the piezoelectric element 11, it is distorted in the height direction. However, since the upper side is fixed to the piezo element support 5, the piezoelectric element 11 elongates in the downward direction. Therefore, the piston 12 is pressed down and the volume of the quantifying part liquid chamber 8 is reduced, so that the ink 34 is flowed out from the liquid flow channel 14 in the amount corresponding to the reduced volume, namely the quantified ink 34. This quantified ink 34 is mixed with the transparent solvent 35 discharged from the base 1.

REFERENCES:
patent: 4196437 (1980-04-01), Hertz
patent: 4494128 (1985-01-01), Vaught
patent: 5371529 (1994-12-01), Eguchi et al.
patent: 5825379 (1998-10-01), Kagami

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