Liquid ejection device and carriage

Patent metadata

Field	Value
Publication number	US-12533899-B2
Application number	US-202318475308-A
Country	US
Kind code	B2
Filing date	Sep 27, 2023
Priority date	Sep 30, 2022
Publication date	Jan 27, 2026
Grant date	Jan 27, 2026

Abstract

A liquid ejection device 1 includes a head 101 for ejecting liquid, a board case 120 for housing a board unit 123 for driving the head 101 , a first fan 121 fixed to the board case 120 and for sending airflow into the board case 120 , a carriage 100 for housing therein the head 101 and the board case 120 , and a second fan 102 for sending airflow taken from outside the carriage 100 into the carriage 100 , wherein the board unit 123 is connected to the head 101 via a board-to-board connector 130 , and the amount of airflow sent into the carriage 100 by the second fan 102 is larger than the amount of airflow sent into the board case 120 by the first fan 121.

First claim

What is claimed is:

1 . A liquid ejection device comprising:
a head configured to eject liquid onto a medium; a board case in which a board unit for driving the head is accommodated; a first fan fixed to the board case and configured to send airflow into the board case; a carriage that accommodates the head and the board case; and a second fan that is fixed to the carriage above the first fan and that sends airflow taken in from outside the carriage into the carriage, wherein the board unit is connected to the head via a board-to-board connector and an amount of airflow sent into the carriage by the second fan is larger than an amount of airflow sent into the board case by the first fan.

2 . The liquid ejection device according to claim 1 , wherein
the board case is disposed above the head and the first fan is disposed above the board case and sends airflow toward the head.

3 . The liquid ejection device according to claim 1 , further comprising:
a cover covering at least a part of an upper section of the carriage, wherein the cover includes a top surface section positioned above the head and the top surface section includes at least one exhaust port from which airflow sent into the carriage by the second fan is discharged.

4 . The liquid ejection device according to claim 3 , wherein
the at least one exhaust port is disposed in the top surface section in a region different from a region that, in plan view of the top surface section, overlaps the board case.

5 . The liquid ejection device according to claim 1 , further comprising:
a flow path member through which flows liquid supplied to the head from outside the carriage, wherein the flow path member is drawn into the carriage so as to be hit by the airflow sent into the carriage by the second fan.

6 . The liquid ejection device according to claim 5 , wherein
the flow path member is drawn into the carriage at a position between the second fan and the board case so as to be hit by airflow sent into the carriage by the second fan.

7 . The liquid ejection device according to claim 1 , wherein
the board case includes a board case exhaust port configured to exhaust air from inside to outside the board case and the board case exhaust port faces at least one of an exhaust path which is a path of airflow sent into the carriage by the second fan inside the carriage or an airflow path connected to the exhaust path.

8 . A carriage that accommodates a head that ejects liquid onto a medium and a board case in which a board unit for driving the head is accommodated, the carriage comprising:
a first fan fixed to the board case and configured to send airflow into the board case; a carriage that accommodates the head and the board case; and a second fan that is fixed to the carriage above the first fan and that sends airflow taken in from outside the carriage into the carriage, wherein the board unit is connected to the head via a board-to-board connector and an amount of airflow sent into the carriage by the second fan is larger than an amount of airflow sent into the board case by the first fan.

Assignees

• Seiko Epson Corp

Inventors

• Koike Kaoru
• Takishima Keigo

Classifications

• B41J29/377 Primary

  Cooling or ventilating arrangements · CPC title

• B41J29/02

  Framework · CPC title

• B41J29/13

  Cases or covers · CPC title