Title:
INKJET HEAD, METHOD FOR DRIVING SAME, AND INKJET PRINTER
Document Type and Number:
WIPO Patent Application WO/2014/185142
Kind Code:
A1
Abstract:
A drive signal applied to a thin-film piezoelectric element includes the following: at least one discharge pulse that causes a drop of ink to be discharged from a pressure chamber; and a cancellation pulse. Said cancellation pulse has the same polarity as the discharge pulse(s) and serves to suppress reverberations of a pressure wave applied to the pressure chamber when the thin-film piezoelectric element is driven by the application of the discharge pulse(s). Letting Tc represent half of the natural vibration period of the pressure chamber, within the period within which a single pixel is placed, the cancellation pulse is applied once an amount of time equal to Tc times an even integer greater than or equal to 4 has passed since the end of the application of the first discharge pulse.
Inventors:
MAWATARI KENJI (JP)
Application Number:
PCT/JP2014/056600
Publication Date:
November 20, 2014
Filing Date:
March 13, 2014
Export Citation:
Assignee:
KONICA MINOLTA INC (JP)
International Classes:
B41J2/045; B41J2/01; B41J2/055
Foreign References:
| JP2004188990A | 2004-07-08 | |||
| JP2011143682A | 2011-07-28 | |||
| JPH10296975A | 1998-11-10 | |||
| JP2011183550A | 2011-09-22 | |||
| JP2012126046A | 2012-07-05 | |||
| JPS6122959A | 1986-01-31 | |||
| JP3168699B2 | 2001-05-21 | |||
| JP2012126046A | 2012-07-05 |
Other References:
See also references of EP 2998119A4
Attorney, Agent or Firm:
SANO SHIZUO (JP)
Shizuo Sano (JP)
Shizuo Sano (JP)
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