IP Library Granted Patent US 12697822
Granted Patent B2
US 12697822 · App. 18/670,985 · Granted Aug 4, 2026

Liquid ejection device

Inventors: Bingruo Zhang (Matsumoto, JP); Katsuya Asamoto (Matsumoto, JP); Shigenori Nakagawa (Bangalore, IN)
Assignee: Seiko Epson Corporation
B41J11/0022B41J15/02
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Quick Facts
Patent No.
US 12697822
App. No.
18/670,985
Granted
Aug 4, 2026
Kind
B2
Abstract

A liquid ejection device includes a transport section configured to transport a medium along a first axis, a liquid ejection section configured to eject a liquid to the medium, a housing that houses the transport section and the liquid ejection section, a fan disposed at an end section of the housing along a second axis, which intersects the first axis of the housing, and that feeds air into the housing, a flow path member in which are formed an opening along the second axis and a flow passage for guiding air that was fed by the fan, a first partition plate disposed in the flow path and configured to guide, toward the opening, air fed along the second axis, and a second partition plate disposed in the flow path and configured to guide, toward the opening, air fed along the second axis.

Claims (62)

1 . A liquid ejection device comprising:

a transport section configured to transport a medium along a first axis;

a liquid ejection section configured to eject a liquid to the medium transported along the first axis;

a housing that houses the transport section and the liquid ejection section;

a fan that is disposed at an end section of the housing along a second axis, which intersects the first axis of the housing, and that feeds air into the housing;

a flow path member in which are formed an opening along the second axis and a flow passage for guiding air that was fed in by the fan;

a first partition plate that is disposed in the flow path and that is configured to guide, toward the opening, air fed along the second axis; and

a second partition plate that is disposed in the flow path and that is configured to guide, toward the opening, air fed along the second axis, wherein

the flow path has a first flow path section configured to guide air along the second axis and a second flow path section configured to guide air toward the opening,

the first partition plate is arranged at a position closer to the fan than is the second partition plate,

the first partition plate and the second partition plate are provided in the first flow path section and the second flow path section, and

a first part of the first partition plate arranged in the first flow path section is narrower than a second part of the second partition plate arranged in the first flow path section.

2 . The liquid ejection device according to claim 1 , wherein the first partition plate and the second partition plate have the same shape.

3 . The liquid ejection device according to claim 2 , further comprising:

a cover member that is disposed in the flow path and that is configured to hinder air from being fed along the second axis.

4 . The liquid ejection device according to claim 1 , further comprising:

a second fan that is disposed at an other end section of the housing along the second axis and that is configured to direct air into the interior of the housing.

5 . The liquid ejection device according to claim 1 , further comprising:

a roll support member configured to support a roll around which the medium is wound, wherein

the housing has a housing upper surface above a position where the medium is transported and

the roll support member supports the roll at a position where at least a part of the roll is disposed further upward than the housing upper surface.

6 . A liquid ejection device comprising:

a transport section configured to transport a medium along a first axis;

a liquid ejection section configured to eject a liquid to the medium transported along the first axis;

a housing that houses the transport section and the liquid ejection section;

a fan that is disposed at an end section of the housing along a second axis, which intersects the first axis of the housing, and that feeds air into the housing;

a flow path member in which are formed an opening along the second axis and a flow passage for guiding air that was fed in by the fan;

a first partition plate that is disposed in the flow path and that is configured to guide, toward the opening, air fed along the second axis;

a second partition plate that is disposed in the flow path and that is configured to guide, toward the opening, air fed along the second axis; and

a second fan that is disposed at an other end section of the housing along the second axis and that is configured to direct air into the interior of the housing.

7 . The liquid ejection device according to claim 6 , wherein

the first partition plate and the second partition plate have the same shape.

8 . The liquid ejection device according to claim 7 , further comprising:

a cover member that is disposed in the flow path and that is configured to hinder air from being fed along the second axis.

9 . The liquid ejection device according to claim 6 , further comprising:

a roll support member configured to support a roll around which the medium is wound, wherein

the housing has a housing upper surface above a position where the medium is transported and

the roll support member supports the roll at a position where at least a part of the roll is disposed further upward than the housing upper surface.

10 . A liquid ejection device comprising:

a transport section configured to transport a medium along a first axis;

a liquid ejection section configured to eject a liquid to the medium transported along the first axis;

a housing that houses the transport section and the liquid ejection section;

a fan that is disposed at an end section of the housing along a second axis, which intersects the first axis of the housing, and that feeds air into the housing;

a flow path member in which are formed an opening along the second axis and a flow passage for guiding air that was fed in by the fan;

a first partition plate that is disposed in the flow path and that is configured to guide, toward the opening, air fed along the second axis; and

a second partition plate that is disposed in the flow path and that is configured to guide, toward the opening, air fed along the second axis,

wherein at least one of the first and second partition plates is not disposed in the opening of the flow path member.

11 . The liquid ejection device according to claim 10 , wherein

the flow path has a first flow path section configured to guide air along the second axis and a second flow path section configured to guide air toward the opening,

the first partition plate is arranged at a position closer to the fan than is the second partition plate,

the first partition plate and the second partition plate are provided in the first flow path section and the second flow path section, and

a first part of the first partition plate arranged in the first flow path section is narrower than a second part of the second partition plate arranged in the first flow path section.

12 . The liquid ejection device according to claim 10 , wherein

the first partition plate and the second partition plate have the same shape.

13 . The liquid ejection device according to claim 12 , further comprising:

a cover member that is disposed in the flow path and that is configured to hinder air from being fed along the second axis.

14 . The liquid ejection device according to claim 10 , further comprising:

a second fan that is disposed at an other end section of the housing along the second axis and that is configured to direct air into the interior of the housing.

15 . The liquid ejection device according to claim 10 , further comprising:

a roll support member configured to support a roll around which the medium is wound, wherein

the housing has a housing upper surface above a position where the medium is transported and

the roll support member supports the roll at a position where at least a part of the roll is disposed further upward than the housing upper surface.