Liquid discharge apparatus, liquid discharge system, and print head

Patent metadata

Field	Value
Publication number	US-10814646-B2
Application number	US-201916575491-A
Country	US
Kind code	B2
Filing date	Sep 19, 2019
Priority date	Sep 19, 2018
Publication date	Oct 27, 2020
Grant date	Oct 27, 2020

Abstract

In a liquid discharge apparatus, a print head includes a supply port to which liquid is supplied; a nozzle plate that includes a nozzle for discharging the liquid; a substrate that includes first side, a second side, a first surface, and a second surface which is different from the first surface; a connector that is provided on the first surface; and an integrated circuit that is provided on the first surface, the substrate is provided between the nozzle plate and the supply port, the connector is provided along the first side, the integrated circuit is provided in a place which is not adjacent to the connector, and a shortest distance between the supply port and the first surface is longer than a shortest distance between the supply port and the second surface.

First claim

What is claimed is:

1. A liquid discharge system comprising:
a print head that discharges liquid; and
a digital signal output circuit that outputs a digital signal to the print head, wherein
the print head includes
a supply port to which the liquid is supplied,
a nozzle plate that includes a plurality of nozzles for discharging the liquid,
a substrate that includes a first side and a second side, which are provided in parallel to each other, a third side and a fourth side, which are provided in parallel to each other, a first surface, and a second surface which is different from the first surface, and that has a shape in which the first side is orthogonal to the third side and the fourth side, and the second side is orthogonal to the third side and the fourth side,
a connector that is provided on the first surface and to which the digital signal is input, and
an integrated circuit that is provided on the first surface, that is electrically coupled to the connector, to which the digital signal is input through the connector, and that outputs an abnormality signal which indicates existence/non-existence of abnormality of the print head,

the substrate is provided between the nozzle plate and the supply port,
the connector is provided along the first side,
the integrated circuit is provided in a place which is not adjacent to the connector, and
a shortest distance between the supply port and the first surface is longer than a shortest distance between the supply port and the second surface.

2. The liquid discharge system according to claim 1 , further comprising:
a carriage that reciprocates along a first direction, wherein
the print head is mounted on the carriage, and
the substrate is provided such that the first side and the second side are located along a second direction orthogonal to the first direction, and the third side and the fourth side are located along the first direction.

3. The liquid discharge system according to claim 1 , wherein the supply port is located at a vertically upper part of the substrate.

4. The liquid discharge system according to claim 1 , wherein the first surface faces a vertically lower part and the second surface faces a vertically upper part.

5. The liquid discharge system according to claim 1 , wherein the first surface is orthogonal to a vertical direction.

6. The liquid discharge system according to claim 1 , wherein a length of the first side is shorter than a length of the third side.

7. The liquid discharge system according to claim 1 , wherein
a shortest distance between a virtual line, which has an equal distance from the first side and the second side, and the integrated circuit is shorter than a shortest distance between the first side and the integrated circuit, and
the shortest distance between the virtual line and the integrated circuit is shorter than a shortest distance between the second side and the integrated circuit.

8. The liquid discharge system according to claim 1 , wherein
the print head includes a fixing member that fixes the substrate,
the substrate includes a fixing hole into which the fixing member is inserted, and
at least a part of the integrated circuit overlaps the fixing member in a direction along the third side.

9. The liquid discharge system according to claim 1 , wherein
the print head includes a discharge module that includes the nozzle plate,
the integrated circuit is located between the substrate and the discharge module, and
the substrate and the discharge module are fixed by an adhesive.

10. The liquid discharge system according to claim 1 , wherein
the print head includes a plurality of flexible wiring substrates which are electrically coupled to the substrate,
the substrate includes a plurality of FPC insertion holes into which the plurality of flexible wiring substrates are inserted,
a width of each of the plurality of the FPC insertion holes in a direction along the first side is larger than a width in a direction along width in a direction along the third side, and
the plurality of FPC insertion holes are located in line along the third side.

11. The liquid discharge system according to claim 10 , wherein the integrated circuit is located other than between the plurality of FPC insertion holes in the direction along the third side.

12. The liquid discharge system according to claim 1 , wherein the substrate includes a supply port insertion hole into which the supply port is inserted.

13. The liquid discharge system according to claim 1 , wherein the integrated circuit is a surface-mount component.

14. The liquid discharge system according to claim 13 , wherein the integrated circuit is electrically coupled to the substrate through a bump electrode.

15. The liquid discharge system according to claim 1 , wherein the connector includes a fifth side, a sixth side which is orthogonal to the fifth side and is longer than the fifth side, and a plurality of terminals, the plurality of terminals being provided in line in a direction along the sixth side.

16. The liquid discharge system according to claim 15 , wherein the connector is provided in the substrate such that the sixth side of the connector is parallel to the first side of the substrate.

17. A liquid discharge apparatus comprising:
a carriage that reciprocates along a first direction;
a print head that is mounted on the carriage; and
a digital signal output circuit that outputs a digital signal to the print head, wherein
the print head includes
a supply port to which the liquid is supplied from the liquid accommodation container,
a nozzle plate that includes a plurality of nozzles for discharging the liquid,
a substrate that includes a first side and a second side, which are provided in parallel to each other, a third side and a fourth side, which are provided in parallel to each other, a first surface, and a second surface which is different from the first surface, and that has a shape in which the first side is orthogonal to the third side and the fourth side, and the second side is orthogonal to the third side and the fourth side,
a connector that is provided on the first surface and to which the digital signal is input, and
an integrated circuit that is provided on the first surface, that is electrically coupled to the connector, to which the digital signal is input through the connector, and that outputs an abnormality signal which indicates existence/non-existence of abnormality of the print head,

the substrate is provided such that, between the nozzle plate and the supply port, the first side and the second side are located along a second direction orthogonal to the first direction and the third side and the fourth side are located along the first direction,
the connector is provided along the first side,
the integrated circuit is provided in a place which is not adjacent to the connector, and
a shortest distance between the supply port and the first surface is longer than a shortest distance between the supply port and the second surface.

18. A print head comprising:
a supply port to which liquid is supplied;
a nozzle plate that includes a plurality of nozzles for discharging the liquid;
a substrate that includes a first side and a second side, which are provided in parallel to each other, a third side and a fourth side, which are provided in parallel to each other, a first surface, and a second surface which is different from the first surface, and that has a shape in which the first side is orthogonal to the third side and the fourth side, and the second

Assignees

• Seiko Epson Corp

Inventors

• Matsumoto Yusuke
• Matsuyama Toru

Classifications

• B41J2/045 Primary

  by pressure, e.g. electromechanical transducers · CPC title

• B41J2/04563

  detecting head temperature; Ink temperature · CPC title

• B41J2/04541 Primary

  Specific driving circuit · CPC title

• B41J2/04501

  Control methods or devices therefor, e.g. driver circuits, control circuits · CPC title

• B41J2/025

  by vibration · CPC title