Title:
DRIVE WAVEFORM AMPLIFICATION CIRCUIT FOR INKJET HEAD, INKJET RECORDING DEVICE, AND DRIVE WAVEFORM AMPLIFICATION METHOD FOR INKJET HEAD
Document Type and Number:
WIPO Patent Application WO/2017/212868
Kind Code:
A1
Abstract:
Provided is a drive waveform amplification circuit for an inkjet head. The drive waveform amplification circuit can more appropriately maintain an outputted drive waveform without a power supply unit being enlarged. Also provided are an inkjet recording device and a drive waveform amplification method for an inkjet head. The drive waveform amplification circuit for an inkjet head comprises: a power amplification unit (210) that amplifies the power of a drive signal for an inputted prescribed drive waveform and outputs the drive signal to a capacitive load of an inkjet head; and a feedback unit (212) that provides negative feedback for the drive signal by means of a signal that is based on an output voltage signal that is outputted to the capacitive load from the power amplification unit (210). The feedback unit (212) comprises a high frequency side emphasis selection unit (2121) that, of the output voltage signal that provides the negative feedback, emphasizes a frequency component that is at or above a prescribed lower limit frequency.
Inventors:
INABA YASUNORI (JP)
OKANO HIROAKI (JP)
OKANO HIROAKI (JP)
Application Number:
PCT/JP2017/018012
Publication Date:
December 14, 2017
Filing Date:
May 12, 2017
Export Citation:
Assignee:
KONICA MINOLTA INC (JP)
International Classes:
H03F1/34; H03F3/30
Foreign References:
| JP2008254197A | 2008-10-23 | |||
| JP2015042262A | 2015-03-05 |
Attorney, Agent or Firm:
KOYO INTERNATIONAL PATENT FIRM (JP)
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