US5667569A
Expired / Lapsed
US
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Water-based ink and ink jet recording method using same
Assignee: Brother Industries Ltd
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Filing: 1996-04-22
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Granted: 1997-09-16
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Expires: 2016-04-22
Abstract
Abstract A water-based ink includes coloring agents, polyvalent alcohol, polyvalent alcohol monoalkyl ether, and water. The polyvalent alcohol monoalkyl ether preferably has a vapor pressure not greater than 0.1 mm Hg at 20 DEG C. The ink exhibits superior recording properties (signal responsiveness, stability in liquid form, discharge stability, continuous recording ability over long periods of time, and ink discharge stability after use has been suspended for long periods of time), fluid stability, preservation stability, adherence to recording materials, quick drying, printing quality and low odor, thus being an excellent ink for various types of ink jet recording.
Inventors
- 👤 Masaya Fujioka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:53
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
53 words
A water-based ink, comprising: at least one coloring agent; at least one polyvalent alcohol in an amount ranging from 5-50% by weight based on the weight of the ink; at least one polyvalent alcohol monoalkyl ether in an amount ranging from 5-15% by weight based on the weight of the ink; and water.
Claim 2
Dependent Claim
53 words
A water-based ink, comprising: at least one coloring agent; at least one polyvalent alcohol in an amount ranging from 5-50% by weight based on the weight of the ink; at least one polyvalent alcohol monoalkyl ether in an amount ranging from 5-15% by weight based on the weight of the ink; and water.
Claim 3
Dependent Claim
33 words
The water-based ink as claimed in claim 1, wherein said at least one polyvalent alcohol monoalkyl ether has a vapor pressure of less than or equal to 0.1 mm Hg at 20° C.
Claim 4
Dependent Claim
30 words
The water-based ink as claimed in claim 2, wherein said at least one polyvalent alcohol monoalkyl ether has a vapor pressure of less than 0.01 mm Hg at 20° C.
Claim 5
Dependent Claim
34 words
The water-based ink as claimed in claim 1, wherein said at least one polyvalent alcohol monoalkyl ether is present in an amount ranging from 7-12% by weight based on the weight of the ink.
Claim 6
Dependent Claim
69 words
The water-based ink as claimed in claim 1, wherein the at least one polyvalent alcohol monoalkyl ether is selected from the group consisting of diethylene glycol monomethyl ether, diethylene glycol monobutyl ether, diethylene glycol monoisobutyl ether, dipropylene glycol monomethyl ether, dipropylene glycol monopropyl ether, dipropylene glycol monoisopropyl ether, dipropylene glycol monobutyl ether, triethylene glycol monomethyl ether, triethylene glycol monobutyl ether, tripropylene glycol monomethyl ether and tripropylene glycol monobutyl ether.
Claim 7
Dependent Claim
33 words
The water-based ink as claimed in claim 1, wherein the at least one polyvalent alcohol monoalkyl ether is selected from the group consisting of triethylene glycol monoalkyl ether and tripropylene glycol monoalkyl ether.
Claim 8
Dependent Claim
37 words
The water-based ink as claimed in claim 6, wherein the at least one polyvalent alcohol monoalkyl ether is selected from the group consisting of triethylene glycol monomethyl ether, triethylene glycol monobutyl ether and tripropylene glycol monobutyl ether.
Claim 9
Dependent Claim
50 words
The water-based ink as claimed in claim 1, wherein said at least one polyvalent alcohol is selected from the group consisting of polyethylene glycol, polypropylene glycol, ethylene glycol, propylene glycol, butylene glycol, diethylene glycol, dipropylene glycol, triethylene glycol, tripropylene glycol, 1,2,6-hexane triol, thio diglycol, 1,3-butanediol, 1,5-pentanediol, hexylene glycol and glycerin.
Claim 10
Dependent Claim
32 words
The water-based ink as claimed in claim 1, wherein said at least one coloring agent is present in an amount ranging from 0.01-20% by weight based on the weight of the ink.
Claim 11
Dependent Claim
20 words
The water-based ink as claimed in claim 1, wherein said at least one coloring agent is a water soluble dye.
Claim 12
Dependent Claim
18 words
The water-based ink as claimed in claim 1, wherein said at least one coloring agent is a pigment.
Claim 13
Dependent Claim
28 words
The water-based ink as claimed in claim 1, wherein said water is present in an amount ranging from 10-90% by weight based on the weight of the ink.
Claim 14
Dependent Claim
18 words
The water-based ink as claimed in claim 1, wherein said water is ion exchanged water or distilled water.
Claim 15
Dependent Claim
68 words
An ink jet recording method using water-based ink comprising jetting an ink comprising at least one coloring agent, at least one polyvalent alcohol monoalkyl ether present in an amount ranging from 5-15% by weight based on the weight of the ink, at least one polyvalent alcohol present in an amount ranging from 5-50% by weight based on the weight of the ink and water onto a recording medium.
Claim 16
Dependent Claim
68 words
An ink jet recording method using water-based ink comprising jetting an ink comprising at least one coloring agent, at least one polyvalent alcohol monoalkyl ether present in an amount ranging from 5-15% by weight based on the weight of the ink, at least one polyvalent alcohol present in an amount ranging from 5-50% by weight based on the weight of the ink and water onto a recording medium.
Claim 17
Dependent Claim
38 words
The ink jet recording method as claimed in claim 14, wherein said at least one coloring agent is present in an amount of 0.01-20% by weight and said water is present in an amount of 10-90% by weight.
Claim 18
Dependent Claim
27 words
The ink jet recording method as claimed in claim 14, wherein said jetting is achieved by static electricity aspiration, a piezoelectric device, or an ink bubble method.
Claim 19
Dependent Claim
38 words
The ink jet recording method as claimed in claim 14, wherein the at least one polyvalent alcohol monoalkyl ether has a vapor pressure at 20° C. of less than or equal to 0.1 mm Hg at 20° C.
Claim 20
Dependent Claim
35 words
The ink jet recording method as claimed in claim 14, wherein the at least one polyvalent alcohol monoalkyl ether is selected from the group consisting of triethylene glycol monoalkyl ether and tripropylene glycol monoalkyl ether.
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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) | 2000-09-15 | 2001-03-17 | 2001-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-09-15 | 2005-03-17 | 2005-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-09-15 | 2009-03-17 | 2009-09-16 | $7700.00 | Window Closed / Lapsed |