Title:
INKJET RECORDING DEVICE
Document Type and Number:
WIPO Patent Application WO/2013/073527
Kind Code:
A1
Abstract:
Provided is an inkjet recording device that, no matter what sort of ink the ink is, prevents residual oscillation of the ink, thereby preventing permeation of the ink at an opening section, and can stably cause the continuous discharge of the ink. The inkjet recording device (30) is equipped with: a recording head (32) at which a nozzle (38) is formed having a pressure chamber (40), which houses ink, and an opening section (36) that causes the discharge of ink and interconnects with the pressure chamber (40); a piezoelectric element (42) configuring a portion of the pressure chamber (40); and a drive signal generation unit (44) that inputs a drive signal to the piezoelectric element (42), altering the volume of the pressure chamber (40). The drive signal generation unit (44) generates the drive signal in a manner so as to cause the execution of: a first expansion step for causing the expansion of the pressure chamber (40); after the first expansion step, a first contraction step for causing the contraction of the pressure chamber to cause the discharge of ink; and after the first contraction step, a second contraction step for causing the contraction of the pressure chamber at a timing at which a meniscus is pulled in the reverse direction from the direction of discharge. The drive signal output by the drive signal generation unit (44) is set in a manner so that the electrical potential at the endpoint of the second contraction step is positioned in a range on the reverse side from the electrical potential at the starting point of the first expansion step, and is set in a manner so that the electrical potential at the starting point of the first expansion step is approximately the same as the electrical potential at the starting point of the second contraction step.
Inventors:
YANAGISAWA SHOTA (JP)
Application Number:
PCT/JP2012/079397
Publication Date:
May 23, 2013
Filing Date:
November 13, 2012
Export Citation:
Assignee:
MIMAKI ENG KK (JP)
International Classes:
B41J2/01; B41J2/045; B41J2/055
Foreign References:
| JP2011031442A | 2011-02-17 | |||
| JP2002144560A | 2002-05-21 | |||
| JPH0952360A | 1997-02-25 | |||
| JP2011132536A | 2011-07-07 | |||
| JP3275965B2 | 2002-04-22 |
Other References:
See also references of EP 2781354A4
Attorney, Agent or Firm:
WATANUKI, TAKAO (JP)
Takao Watanuki (JP)
Takao Watanuki (JP)
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Claims: