Title:
HEAD DRIVE CIRCUIT AND PRINTING DEVICE
Document Type and Number:
Japanese Patent JP2018176588
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To suppress rounding of a waveform of a drive signal that is output to a print head while suppressing an increase in cost.SOLUTION: A head drive circuit 106 includes: an amplifier 203 for outputting a drive signal to an inkjet head 21a; and a damping circuit 201 having a resister R1 disposed between the amplifier 203 and the inkjet head 21a and a field effect transistor Q1 connected to the resister R1 in parallel. The field effect transistor Q1 executes on-off operation in accordance with a voltage of the drive signal and varies a value of resistance of a damping resister.SELECTED DRAWING: Figure 8
Inventors:
HIRAMATSU KAZUNORI
Application Number:
JP2017081066A
Publication Date:
November 15, 2018
Filing Date:
April 17, 2017
Export Citation:
Assignee:
SEIKO EPSON CORP
International Classes:
B41J2/14
Attorney, Agent or Firm:
Patent Business Corporation Kushibuchi International Patent Office