Liquid discharge apparatus and control method

Patent metadata

Field	Value
Publication number	US-2025033394-A1
Application number	US-202418785695-A
Country	US
Kind code	A1
Filing date	Jul 26, 2024
Priority date	Jul 28, 2023
Publication date	Jan 30, 2025
Grant date	—

Abstract

A liquid discharge apparatus includes a carriage on which a discharge head configured to discharge a liquid is mounted, the carriage being configured to move in a predetermined direction; and an operation unit configured to be placed near a movement region of the carriage and configured to be operated by a user. When a predetermined condition is satisfied, the carriage moves to a retreat position on the movement region and then moves to a predetermined position on the movement region. The retreat position is a position on an opposite side of the predetermined position to the operation unit in the predetermined direction.

First claim

What is claimed is:

1 . A liquid discharge apparatus comprising:
a carriage on which a discharge head configured to discharge a liquid is mounted, the carriage being configured to move in a predetermined direction; and an operation unit configured to be placed near a movement region of the carriage and configured to be operated by a user, wherein when a predetermined condition is satisfied, the carriage moves to a retreat position on the movement region and then moves to a predetermined position on the movement region, and the retreat position is a position on an opposite side of the predetermined position to the operation unit in the predetermined direction.

2 . The apparatus according to claim 1 , wherein the predetermined condition is a start condition for processing, the start condition requiring an operation on the operation unit.

3 . The apparatus according to claim 1 , wherein the predetermined position is a position at which a user can perform an operation with respect to the carriage.

4 . The apparatus according to claim 1 , wherein the predetermined position is a middle portion of the movement region.

5 . The apparatus according to claim 3 , wherein the operation is a replacing operation for the discharge head.

6 . The apparatus according to claim 1 , wherein the operation unit is a valve configured to switch between supply and interruption of a liquid with respect to the discharge head.

7 . The apparatus according to claim 6 , wherein the valve is provided on a pipe between the discharge head and a reservoir configured to retain the liquid.

8 . The apparatus according to claim 7 , wherein the valve interrupts supply of the liquid by crushing the pipe.

9 . The apparatus according to claim 7 , wherein the pipe is routed so as to avoid a position above the operation unit.

10 . The apparatus according to claim 1 , wherein the retreat position is a position on one end portion of the movement region in the predetermined direction, and
the other end portion of the movement region is provided with a recovery unit configured to recover discharge performance of the discharge head.

11 . The apparatus according to claim 1 , further comprising a detection unit configured to detect an operation on the operation unit,
wherein when an operation is not detected by the detection unit after the carriage is moved to the retreat position, the carriage is not moved to the predetermined position.

12 . The apparatus according to claim 1 , further comprising a notification unit configured to prompt a user to release a hand off the operation unit after movement of the carriage to the retreat position.

13 . The apparatus according to claim 12 , wherein when the user does not respond to a notification from the notification unit, the carriage is not moved to the predetermined position.

14 . The apparatus according to claim 1 , further comprising:
a cover member configured to open and close between a closed position to cover the carriage and the operation unit and an open position to expose the carriage and the operation unit; a detection unit configured to detect an open/closed state of the cover member; and a notification unit configured to prompt a user to displace the cover member to the open position after movement of the carriage to the retreat position and to prompt the user to operate the operation unit when the detection unit detects displacement of the cover member to the open position.

15 . The apparatus according to claim 1 , further comprising a belt transmission mechanism configured to move the carriage in the predetermined direction,
wherein the carriage includes a support portion and a holding member attached to the support portion through an elastic member and configured to hold an endless belt of the belt transmission mechanism, and the support portion includes a wide portion with which the elastic member is in close contact and a narrow portion having a gap with the elastic member.

16 . The apparatus according to claim 15 , wherein the support portion has a middle portion located between the wide portion and the narrow portion and gradually decreasing in width from the wide portion to the narrow portion.

17 . The apparatus according to claim 15 , wherein the carriage has a restricting portion configured to restrict inclination of the holding member with respect to a traveling direction of the endless belt.

18 . A control method for a liquid discharge apparatus including: a carriage on which a discharge head configured to discharge a liquid, the carriage being configured to move in a predetermined direction; and an operation unit placed near a movement region of the carriage and configured to be operated by a user, the method comprising
moving the carriage to a retreat position on the movement region and then moving the carriage to a predetermined position on the movement region when a predetermined condition is satisfied, wherein the retreat position is a position on an opposite side of the predetermined position to the operation unit in the predetermined direction.

Assignees

• Canon Kk

Inventors

• Kohnotoh Atsushi
• Yamaguchi Shuhei
• Takenaga Ken
• Takeda Daiju
• Tanaka Kousuke

Classifications

• B41J2/21

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• B41J25/001

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• B41J2/14016

  Structure of bubble jet print heads · CPC title

• B41J2/145

  Arrangement thereof · CPC title

• B41J2/17596

  Ink pumps, ink valves · CPC title