IP Library › Granted Patent US 12,617,207
Granted Patent B2
US 12,617,207 · App. 18/515,278 · Granted May 5, 2026

Liquid discharge apparatus

Inventors: Teppei Kikuchi (Kanagawa, JP); Hiroyuki Yamashita (Kanagawa, JP); Yasunobu Takagi (Kanagawa, JP); Nanami Takano (Tokyo, JP); Kaoru Satoh (Nagano, JP)
Assignee: RICOH COMPANY, LTD.
B41J2/16523B41J2/16514B41P2235/27
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Quick Facts
Patent No.
US 12,617,207
App. No.
18/515,278
Granted
May 5, 2026
Kind
B2
Abstract

A liquid discharge apparatus includes: a liquid discharge head having a discharge face having a nozzle from which a liquid is discharged to a medium; a carriage, to which the liquid discharge head is mountable, and reciprocally movable in a main-scanning direction; a guide supporting the carriage to guide the carriage to move in the main-scanning direction; a cap to contact and seal the discharge face of the liquid discharge head; a suction device connected to the cap; and a cap cleaner, supported and guided by the guide to move in the main-scanning direction, to drop a cleaning liquid to the cap.

Claims (60)

1 . A liquid discharge apparatus comprising:

a liquid discharge head having a discharge face having a nozzle from which a liquid is discharged to a medium;

a carriage, to which the liquid discharge head is mountable, and reciprocally movable in a main-scanning direction;

a guide supporting the carriage to guide the carriage to move in the main-scanning direction;

a cap to contact and seal the discharge face of the liquid discharge head;

a suction device connected to the cap; and

a cap cleaner, supported and guided by the guide to move in the main-scanning direction, to drop a cleaning liquid to the cap,

wherein the cap cleaner includes:

a dropper to drop the cleaning liquid to the cap;

a channel connected to the dropper to supply the cleaning liquid to the dropper; and

a holder holding the channel and the dropper.

2 . The liquid discharge apparatus according to claim 1 , wherein:

the holder is detachably attachable to the guide.

3 . The liquid discharge apparatus according to claim 1 , further comprising:

an elastic member elastically biasing the cap cleaner, to a facing position at which the cap cleaner faces the cap, in the main-scanning direction.

4 . The liquid discharge apparatus according to claim 3 , further comprising:

a casing housing the liquid discharge head, the carriage, the guide, the cap, the suction device, and the cap cleaner,

wherein:

the elastic member extendable in the main-scanning direction, and

the elastic member includes:

one end connected to the holder; and

another end fixed to the casing.

5 . The liquid discharge apparatus according to claim 3 , wherein;

the carriage moves to a capping position at which the cap is contactable with the discharge face of the liquid discharge head to push the cap cleaner to be retracted from the facing position.

6 . The liquid discharge apparatus according to claim 1 , wherein:

the cap cleaner includes a pump connected to the dropper through the channel, and

the pump:

feeds the cleaning liquid from the pump to the dropper through the channel in a first direction; or

feeds the cleaning liquid from the dropper to the pump through the channel in a second direction opposite to the first direction in response to a stop of a dropping operation of the cap cleaner to the cap.

7 . The liquid discharge apparatus according to claim 1 , wherein:

the suction device includes a pump.

8 . The liquid discharge apparatus according to claim 1 , further comprising:

a flexible tube connected to the channel to supply the cleaning liquid, the flexible tube being a tube pump.

9 . The liquid discharge apparatus according to claim 1 , wherein:

the holder is supported and guided by a first guide rod and a second guide rod of the guide, the first guide rod and the second guide rod being horizontally disposed.

10 . The liquid discharge apparatus according to claim 1 , wherein the cap cleaner further includes:

a convex portion for buffering an impact on a surface in contact with the carriage.

11 . The liquid discharge apparatus according to claim 1 , further comprising:

a cleaning liquid tank connected to the channel to supply the cleaning liquid.

12 . The liquid discharge apparatus according to claim 1 , wherein:

the dropper is connected to a tank through the channel, the tank for storing the cleaning liquid.

13 . A liquid discharge apparatus, comprising:

a liquid discharge head having a discharge face having a nozzle from which a liquid is discharged to a medium;

a carriage, to which the liquid discharge head is mountable, and reciprocally movable in a main-scanning direction;

a guide supporting the carriage to guide the carriage to move in the main-scanning direction;

a cap to contact and seal the discharge face of the liquid discharge head;

a suction device connected to the cap; and

a cap cleaner, supported and guided by the guide to move in the main-scanning direction, to drop a cleaning liquid to the cap,

wherein the cap cleaner is detachably attachable to the guide.

14 . The liquid discharge apparatus according to claim 13 , wherein:

the suction device includes a pump.

15 . The liquid discharge apparatus according to claim 13 , further comprising:

a flexible tube connected to a channel to supply the cleaning liquid, wherein the flexible tube is a tube pump.

16 . The liquid discharge apparatus according to claim 13 , further comprising:

a holder supported and guided by a first guide rod and a second guide rod of the guide, the first guide rod and the second guide rod being horizontally disposed.

17 . The liquid discharge apparatus according to claim 13 , wherein:

the cap cleaner further includes a convex portion for buffering an impact on a surface in contact with the carriage.

18 . The liquid discharge apparatus according to claim 13 , further comprising: a cleaning liquid tank connected to the channel to supply the cleaning liquid.

19 . The liquid discharge apparatus according to claim 13 , further comprising:

a dropper, the cleaning liquid being dropped from the dropper in response to an operation of a pump connected to the channel.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 21, 2023
From: KIKUCHI, TEPPEI; YAMASHITA, HIROYUKI; TAKAGI, YASUNOBU; TAKANO, NANAMI; SATOH, KAORU
To: RICOH COMPANY, LTD.
Reel/Frame 065627/0197 →
Priority Claims (1)
JP 2022-186508 · Nov 22, 2022 · national
Continuity (1)
Related Publication 20240165955A1 · May 23, 2024
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