Drive board, liquid jet head, and liquid jet recording device

Patent metadata

Field	Value
Publication number	US-2024173964-A1
Application number	US-202318386336-A
Country	US
Kind code	A1
Filing date	Nov 2, 2023
Priority date	Nov 29, 2022
Publication date	May 30, 2024
Grant date	—

Abstract

A drive board and so on capable of improving a printing quality are provided. The drive board according to an embodiment of the present disclosure is a board configured to output a drive signal to be applied to a liquid jet head having a plurality of nozzles, including at least one drive device which is mounted on a board surface, and which is configured to generate the drive signal configured to jet a liquid from the nozzles, and at least one constant-potential wiring line which extends along a longitudinal direction of the drive device in a mounting area of the drive device, and to which a predetermined constant potential is applied. The drive device includes a plurality of output terminals which is arranged at respective positions different from each other along the longitudinal direction, and which is configured to individually output the drive signal, and constant-potential terminals at three or more places which are arranged along the longitudinal direction, and which are electrically coupled to the constant-potential wiring line to which the same constant potential is applied.

First claim

What is claimed is:

1 . A drive board configured to output a drive signal to be applied to a liquid jet head having a plurality of nozzles, the drive board comprising:
at least one drive device which is mounted on a board surface of the drive board, and which is configured to generate the drive signal configured to jet liquid from the nozzles; and at least one constant-potential wiring line which extends along a longitudinal direction of the drive device in a mounting area of the drive device, and to which a predetermined constant potential is applied, wherein the drive device includes
a plurality of output terminals which is arranged along the longitudinal direction, and which is configured to individually output the drive signal, and
constant-potential terminals at three or more places, which are arranged at respective positions different from each other along the longitudinal direction, and which are electrically coupled to the constant-potential wiring line to which the same constant potential is applied.

2 . The drive board according to claim 1 , wherein
the drive device has a pair of end-portion areas, and a central area located between the pair of end-portion areas along the longitudinal direction, and the constant-potential terminals are arranged in each of the pair of end-portion areas and the central area.

3 . The drive board according to claim 2 , wherein
two or more of the constant-potential terminals are arranged in the central area.

4 . The drive board according to claim 1 , wherein
the constant-potential terminals at three or more places are evenly arranged along the longitudinal direction of the drive device.

5 . The drive board according to claim 1 , wherein
the constant-potential wiring line includes
at least one power-supply wiring line to which a power-supply potential as the constant potential is applied, and
a ground wiring line to which a ground potential as the constant potential is applied, and
the drive board includes at least one of
power-supply terminals at three or more places as the constant-potential terminals at three or more places electrically coupled to the power-supply wiring line, and
ground terminals at three or more places as the constant-potential terminals at three or more places electrically coupled to the ground wiring line.

6 . The drive board according to claim 5 , wherein
the power-supply terminals at three or more places and the ground terminals at three or more places are provided respectively to a plurality of the power-supply wiring lines and the ground wiring line.

7 . The drive board according to claim 1 , wherein
the drive device is mounted on the board surface using flip-chip mounting.

8 . The drive board according to claim 1 , wherein
a plurality of the drive devices is arranged side by side along the longitudinal direction on the board surface.

9 . A liquid jet head comprising:
the drive board according to claim 1 ; and a jet section which is configured to jet the liquid based on the drive signal output from the drive board, and which has the plurality of nozzles.

10 . A liquid jet recording device comprising the liquid jet head according to claim 9 .

Assignees

• Sii Printek Inc

Inventors

• Sekiya Yasuhito
• Yoshida Kensuke
• Watanabe Toshiaki
• Kawamoto Shunji

Classifications

• B41J2/14201

  Structure of print heads with piezoelectric elements · CPC title

• B41J2/01 Primary

  Ink jet · CPC title

• B41J2/04541 Primary

  Specific driving circuit · CPC title

• B41J2002/14491

  Electrical connection · CPC title

• B41J2/14233

  of film type, deformed by bending and disposed on a diaphragm · CPC title