IP Library Granted Patent US 10,994,544
Granted Patent B2
US 10,994,544 · App. 16/382,625 · Granted May 4, 2021

Cleaning liquid and method of cleaning ink-jet printer

Inventors: Ha Sai (Tokyo, JP); Hirotoshi Takahashi (Tokyo, JP); Tetsuya Iwazaki (Tokyo, JP)
Assignee: Nippon Kayaku Kabushiki Kaisha
B41J2/16552B41J2/1707C11D1/72C11D3/164
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Quick Facts
Patent No.
US 10,994,544
App. No.
16/382,625
Granted
May 4, 2021
Kind
B2
Abstract

A cleaning liquid including a compound represented by the following formula (1): (CH 3 ) 3 C—R—O(C 4 H 8 O) L —(C 3 H 6 O) m —(C 2 H 4 O) n —H  (1) and water; and a method of cleaning an ink-jet printer using the cleaning liquid. In the formula (1), R represents a linear or branched C1 to C5 hydrocarbon group, and L, m, and n each represent the average number of repeats, and L≥0, m≥0, n>0, and (L+m)/n=1.5/1 to 1/1.5.

Claims (12)

1. A cleaning liquid comprising a compound represented by the following formula (1):

(CH 3 ) 3 C—R—O(C 4 H 8 O) L —(C 3 H 6 O) m —(C 2 H 4 O) n —H  (1)

wherein R represents a 2 methyl-1,4-butanediyl group, and L, m, and n each represent the average number of repeats, and L≥0, m≥0, n>0, and (L+m)/n=1.5/1 to 1/1.5; and

water.

2. The cleaning liquid according to claim 1 , wherein the content of the compound represented by the above formula (1) is 0.01% by mass to 5% by mass.

3. The cleaning liquid according to claim 1 , further comprising one or more glycol ethers.

4. The cleaning liquid according to claim 3 , wherein the content of the one or more glycol ethers is 0.1% by mass to 15% by mass.

5. The cleaning liquid according to claim 1 , further comprising one or more organic solvents other than the one or more glycol ethers.

6. The cleaning liquid according to claim 5 , wherein the content of the one or more organic solvents is 0.1% by mass to 35% by mass.

7. The cleaning liquid of claim 1 , wherein said cleaning liquid is used for cleaning an ink-jet printer.

8. A method of cleaning an ink-jet printer, the method comprising contacting the cleaning liquid according to claim 1 with solid matter of an ink-jet ink adhering on the ink-jet printer, thereby dissolving and removing the solid matter.

9. The method of cleaning according to claim 8 , the method comprising filling an ink-jet head with the cleaning liquid, and passing the cleaning liquid through an ink flow path, thereby dissolving and removing the solid matter.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 26, 2019
From: SAI, HA; TAKAHASHI, HIROTOSHI; IWAZAKI, TETSUYA
To: NIPPON KAYAKU KABUSHIKI KAISHA
Reel/Frame 049010/0468 →
Priority Claims (1)
JP JP2018-089623 · May 8, 2018 · national
Continuity (1)
Related Publication 20190344569A1 · Nov 14, 2019