Patent US6874881B2 successfully refreshed from Google Patents.
US6874881B2
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Ink, ink cartridge, recording unit, ink jet recording method, ink jet recording apparatus and method for stabilizing ink discharge
Assignee: Canon Inc
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Filing: 2002-08-09
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Granted: 2005-04-05
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Expires: 2022-08-09
Abstract
Abstract Provided is an ink-jet ink suitable for high speed printing and reduced ink ejection amount, wherein ink includes a water-insoluble coloring material dispersed in water with a resinous dispersant, glycerin, ethylene urea, and polyoxyethylene alkyl ether with HLB not lower than 13.
Inventors
- 👤 Mariko Suzuki
- 👤 Shoji Koike
- 👤 Makoto Aoki
- 👤 Koromo Shirota
- 👤 Hideki Takayama
- 👤 Yasuhiro Nito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:45
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/32; C09D11/322; B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; C09D11/40
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
95 words
An ink for ink jet recording, comprising water, a water-insoluble coloring material, a resinous dispersant for dispersing said water-insoluble coloring material into water, glycerin, ethylene urea, and polyoxyethylene alkyl ether having HLB of 13 or more, wherein: glycerin is contained in an amount of 3 to 15 weight % based on the total weight of the ink, ethylene urea is contained in an amount of 3 to 15 weight % based on the total weight of the ink, and the content ratio of glycerin to ethylene urea is within a range of 7:3 to 1:2.
Claim 2
Dependent Claim
95 words
An ink for ink jet recording, comprising water, a water-insoluble coloring material, a resinous dispersant for dispersing said water-insoluble coloring material into water, glycerin, ethylene urea, and polyoxyethylene alkyl ether having HLB of 13 or more, wherein: glycerin is contained in an amount of 3 to 15 weight % based on the total weight of the ink, ethylene urea is contained in an amount of 3 to 15 weight % based on the total weight of the ink, and the content ratio of glycerin to ethylene urea is within a range of 7:3 to 1:2.
Claim 3
Dependent Claim
16 words
The ink according to claim 1 , further comprising an ethylene oxide adduct of acetylene glycol.
Claim 4
Dependent Claim
36 words
The ink according to claim 2 , further comprising at least one selected from the group consisting of 2-pyrrolidone, ethylene glycol, glycol of 3 to 6 carbon atoms and triol of 4 to 6 carbon atoms.
Claim 5
Dependent Claim
36 words
The ink according to claim 1 , further comprising at least one selected from the group consisting of 2-pyrrolidone, ethylene glycol, glycol of 3 to 6 carbon atoms and triol of 4 to 6 carbon atoms.
Claim 6
Dependent Claim
15 words
The ink according to claim 1 , wherein said resinous dispersant comprises a block copolymer.
Claim 7
Dependent Claim
13 words
The ink according to claim 1 , being for thermal ink jet recording.
Claim 8
Dependent Claim
32 words
An ink jet recording method comprising a step of discharging the ink according to claim 6 with an ink jet head, wherein said ink jet head is a thermal ink jet head.
Claim 9
Dependent Claim
29 words
The ink jet recording method according to claim 7 , further comprising a step of driving said ink jet head with a frequency of not lower than 5 kHz.
Claim 10
Dependent Claim
29 words
The ink jet recording method according to claim 8 , further comprising a step of driving said ink jet head with a frequency of not lower than 10 kHz.
Claim 11
Dependent Claim
27 words
The ink jet recording method according to claim 8 or 9 , wherein the frequency for driving said ink jet head is not more than 15 kHz.
Claim 12
Dependent Claim
64 words
A method for stabilizing ink discharge from an ink jet recording head when the ink jet recording head is driven at a frequency of not less than 5 kHz, the ink jet recording head's ink discharge amount per discharge operation being not more than 20 pl, comprising the step of utilizing an ink of claim 6 for discharging with the ink jet recording head.
Claim 13
Dependent Claim
27 words
An ink cartridge comprising an ink container containing an ink according to any one of claims 1 to 4 , 5 , 6 , or 3 .
Claim 14
Dependent Claim
34 words
The ink cartridge according to claim 12 , wherein polyoxyethylene alkyl ether is contained in the ink in an amount of 0.1 to 3 weight % based on the total weight of the ink.
Claim 15
Dependent Claim
35 words
A recording unit comprising an ink container containing an ink according to any one of claims 1 to 4 , 5 , 6 or 3 , and an ink jet head for discharging said ink.
Claim 16
Dependent Claim
42 words
The recording unit according to claim 14 , wherein said ink is an ink for thermal ink jet recording, and said ink jet head is of a type for discharging said ink from an orifice by providing said ink with thermal energy.
Claim 17
Dependent Claim
34 words
The recording unit according to claim 14 , wherein polyoxyethylene alkyl ether is contained in the ink in an amount of 0.1 to 3 weight % based on the total weight of the ink.
Claim 18
Dependent Claim
32 words
An ink jet recording method comprising a step of discharging ink according to any one of claims 1 to 4 , 5 , 6 or 3 , with an ink jet head.
Claim 19
Dependent Claim
29 words
The ink jet recording method according to claim 17 , wherein the ink discharge amount per discharge operation of said ink jet head is not more than 20 pl.
Claim 20
Dependent Claim
36 words
The ink jet recording method according to claim 17 , wherein polyoxyethylene alkyl ether is contained in the ink in an amount of 0.1 to 3 weight % based on the total weight of the ink.
Claim 21
Dependent Claim
38 words
An ink jet recording apparatus comprising an ink container containing the ink according to any one of claims 1 to 4 , 5 , 6 or 3 , and an ink jet recording head for discharging said ink.
Claim 22
Dependent Claim
23 words
The ink jet recording apparatus according to claim 20 , wherein said ink jet recording head is a thermal ink jet recording head.
Claim 23
Dependent Claim
30 words
The ink jet recording apparatus according to claim 21 , further comprising means for driving said thermal ink jet recording head with a drive frequency not lower than 5 kHz.
Claim 24
Dependent Claim
31 words
The ink jet recording apparatus according to claim 20 , wherein the ink discharge amount per discharge operation of said thermal ink jet recording head is not more than 20 pl.
Claim 25
Dependent Claim
36 words
The ink jet recording apparatus according to claim 20 , wherein polyoxyethylene alkyl ether is contained in the ink in an amount of 0.1 to 3 weight % based on the total weight of the ink.
Claim 26
Dependent Claim
30 words
The ink according to claim 1 , wherein polyoxyethylene alkyl ether is contained in an amount of 0.1 to 3 weight % based on the total weight of the ink.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2008-04-04 | 2008-10-04 | 2009-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2012-04-04 | 2012-10-04 | 2013-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2016-04-04 | 2016-10-04 | 2017-04-05 | $7700.00 | Window Closed / Lapsed |