US 11,993,080 B2
Drive circuit of recording head and image recorder
Shinichi Kawaguchi, Sagamihara (JP); and Hajime Nakamura, Hachioji (JP)
Assigned to KONICA MINOLTA, INC., Tokyo (JP)
Appl. No. 17/617,780
Filed by Konica Minolta, Inc., Tokyo (JP)
PCT Filed Jun. 17, 2019, PCT No. PCT/JP2019/023847
§ 371(c)(1), (2) Date Dec. 9, 2021,
PCT Pub. No. WO2020/255188, PCT Pub. Date Dec. 24, 2020.
Prior Publication US 2022/0227129 A1, Jul. 21, 2022
Int. Cl. B41J 2/045 (2006.01)
CPC B41J 2/04541 (2013.01) [B41J 2/0458 (2013.01); B41J 2/04581 (2013.01); B41J 2/04588 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A drive circuit of a recording head having a recording element, the drive circuit supplying a load element for recording operation of the recording element with an output signal of electric power according to operation of the load element, and the drive circuit comprising:
a voltage amplifier that amplifies a voltage of an analog drive waveform signal for operation of the recording element to generate a drive voltage signal,
wherein
the voltage amplifier includes amplifiers, and
among the amplifiers, at least one of subsequent-stage amplifiers which are a second and subsequent amplifiers from an upstream side includes a signal feedback unit that returns a signal to be output to an input side of the subsequent-stage amplifiers.