Title:
DROPLET JETTING APPARATUS AND DROPLET JETTING METHOD
Document Type and Number:
WIPO Patent Application WO/2010/070989
Kind Code:
A1
Abstract:
A droplet jetting apparatus is provided with: a nozzle (2d); a liquid storing chamber (12), which is connected to the nozzle (2d) and stores a material liquid supplied from a liquid supplying path (2g); a piezoelectric vibrator (2f) provided on the liquid storing chamber (12); and a control means (8) which applies a driving voltage (Vw) to the piezoelectric vibrator (2f). Droplets of the material liquid are jetted from the nozzle (2d) by increasing and reducing the volume of the liquid storing chamber (12) by means of the piezoelectric vibrator (2f) which deforms corresponding to the driving voltage applied from the control means (8). At the time of sucking the material liquid from the liquid supplying path (2g) into the liquid storing chamber (12), the driving voltage (Vw) applied to the piezoelectric vibrator (2f) is changed step by step so that the volume of the liquid storing chamber (12) is increased by a plurality of steps.
Thus, droplets can be excellently jetted by suppressing generation of cavitation.
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Inventors:
SATO HITOSHI
Application Number:
PCT/JP2009/068950
Publication Date:
June 24, 2010
Filing Date:
November 06, 2009
Export Citation:
Assignee:
SHARP KK (JP)
SATO HITOSHI
SATO HITOSHI
International Classes:
B05C5/00; B41J2/045; B41J2/055
Foreign References:
| JPH0671876A | 1994-03-15 | |||
| JP2000043260A | 2000-02-15 |
Attorney, Agent or Firm:
UENO, NOBORU (JP)
Ueno 登 (JP)
Ueno 登 (JP)
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