Patent US6004389A successfully refreshed from Google Patents.
US6004389A
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US
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Pigment ink composition capable of forming image having no significant bleeding or feathering
Assignee: Seiko Epson Corp
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Filing: 1998-01-16
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Granted: 1999-12-21
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Expires: 2018-01-16
Abstract
Abstract An ink for ink jet recording is provided which can form a record having a high color density, free from the occurrence of bleeding or feathering even on recycled paper, and possessing water resistance. An ink composition comprising a pigment dispersible and/or soluble in water without the aid of any dispersant and a glycol ether selected from the group consisting of diethylene glycol mono-n-butyl ether, triethylene glycol mono-n-butyl ether, propylene glycol mono-n-butyl ether, and dipropylene glycol mono-n-butyl ether can realize a print having no significant bleeding or feathering. Further, a high-quality image having much less bleeding or feathering can be realized by an ink jet recording method wherein a reaction solution, containing a reactant, capable of breaking the state of dispersion and/or dissolution of a pigment in the ink composition is brought into contact with the ink composition.
Inventors
- 👤 Masahiro Yatake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:23
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/32; C09D11/322; C09D11/54
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
62 words
An ink composition comprising a pigment, a glycol ether, and water, the pigment being dispersible and/or soluble in water without the aid of any dispersant, the glycol ether being one member or a mixture of two or more members selected from the group consisting of diethylene glycol mono-n-butyl ether, triethylene glycol mono-n-butyl ether, propylene glycol mono-n-butyl ether, and dipropylene glycol mono-n-butyl ether.
Claim 2
Dependent Claim
62 words
An ink composition comprising a pigment, a glycol ether, and water, the pigment being dispersible and/or soluble in water without the aid of any dispersant, the glycol ether being one member or a mixture of two or more members selected from the group consisting of diethylene glycol mono-n-butyl ether, triethylene glycol mono-n-butyl ether, propylene glycol mono-n-butyl ether, and dipropylene glycol mono-n-butyl ether.
Claim 3
Dependent Claim
56 words
The ink composition according to claim 1, wherein the pigment has been treated to bond at least one functional group selected from the group consisting of carbonyl, carboxyl, hydroxyl, and sulfonyl groups or a salt thereof onto the surface thereof, permitting the pigment to be dispersed and/or dissolved in water without the aid of any dispersant.
Claim 4
Dependent Claim
21 words
The ink composition according to claim 1, wherein the pigment is present in the range of 2 to 15% by weight.
Claim 5
Dependent Claim
22 words
The ink composition according to claim 1, wherein the glycol ether is present in the range of 3 to 30% by weight.
Claim 6
Dependent Claim
14 words
The ink composition according to claim 1, which further comprises an acetylene glycol surfactant.
Claim 7
Dependent Claim
23 words
The ink composition according to claim 5, wherein the acetylene glycol surfactant is present in the range of 0.1 to 5% by weight.
Claim 8
Dependent Claim
12 words
The ink composition according to claim 1, which further comprises a glycol.
Claim 9
Dependent Claim
21 words
The ink composition according to claim 7, wherein the glycol is present in the range of 3 to 25% by weight.
Claim 10
Dependent Claim
12 words
The ink composition according to claim 1, which further comprises a dye.
Claim 11
Dependent Claim
81 words
The ink composition according to claim 9, wherein the dye is a water-soluble dye represented by the following general formula (I) or (II): ##STR4## wherein A represents POOM or COOM, X and Y each independently represent an alkoxy or alkyl group, M represents an alkali metal, H, or NH 4 or an organic amine; and ##STR5## wherein M represents an alkali metal, H, or NH 4 or an organic amine, m is 1 or 2 and n is 0 or 1.
Claim 12
Dependent Claim
27 words
The ink composition according to claim 10, wherein the amount of the water-soluble dye added is 50 to less than 200% by weight based on the pigment.
Claim 13
Dependent Claim
18 words
The ink composition according to claim 1, which further comprises a surfactant and/or a regulated polymerization water-soluble resin.
Claim 14
Dependent Claim
25 words
The ink composition according to claim 12, wherein the surfactant and/or the regulated polymerization water-soluble resin can promote or stabilize the dispersion of the pigment.
Claim 15
Dependent Claim
22 words
The ink composition according to claim 1, wherein the pigment is a carbon black having an average particle diameter of 60-150 μm.
Claim 16
Dependent Claim
19 words
An ink composition as claimed in claim 1, wherein the water is the major component in the ink composition.
Claim 17
Dependent Claim
27 words
An ink composition as claimed in claim 15, wherein the water is present in the ink composition in an amount of at least about 59% by weight.
Claim 18
Dependent Claim
26 words
An ink composition as claimed in claim 1, wherein the water is present in the ink composition in an amount of between about 59-74% by weight.
Claim 19
Dependent Claim
22 words
An ink composition as claimed in claim 15, wherein the glycol ether is present in an amount of about 3-30% by weight.
Claim 20
Dependent Claim
25 words
An ink composition as claimed in claim 18 wherein the pigment is present in the ink composition in an amount of about 2-15% by weight.
References Cited (Backward Citations)
EP0441987A2
Cited
EP0635380A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-12-20 | 2003-06-21 | 2003-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-12-20 | 2007-06-21 | 2007-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-12-20 | 2011-06-21 | 2011-12-21 | $7700.00 | Window Closed / Lapsed |