US6132502A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pigment-base ink composition capable of forming images excellent in resistance to scuffing
Assignee: Seiko Epson Corp
•
Filing: 1998-07-10
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Granted: 2000-10-17
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Expires: 2018-07-10
Abstract
Abstract An ink jet recording ink is disclosed which can realize feathering- or bleeding-free, waterfast recording on plain paper, recycled paper, and recording media having a surface gloss layer. The ink composition comprises a pigment, a glycol ether, a water-soluble emulsion, and water, the pigment being dispersible and/or soluble in water without a dispersant, the glycol ether being one member or a mixture of at least two members selected from a 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.
Inventors
- 👤 Masahiro Yatake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:03
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/32; C09D11/322
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
62 words
An ink composition comprising a pigment, a glycol ether, a water-soluble emulsion, and water, the pigment being dispersible and/or soluble in water without a dispersant, the glycol ether being one member or a mixture of at least two members selected from a 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, a water-soluble emulsion, and water, the pigment being dispersible and/or soluble in water without a dispersant, the glycol ether being one member or a mixture of at least two members selected from a 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
24 words
The ink composition according to claim 1, wherein the content of the water-soluble emulsion in the ink composition is 0.5 to 10% by weight.
Claim 4
Dependent Claim
48 words
The ink composition according to claim 1, wherein the surface of the pigment has at least one functional group, selected from carbonyl, carboxyl, hydroxyl, and sulfone groups, or a salt thereof on the surface, thereby permitting the pigment to be dispersible and/or soluble in water without a dispersant.
Claim 5
Dependent Claim
23 words
The ink composition according to claim 1, wherein the content of the pigment in the ink composition is 2 to 15% by weight.
Claim 6
Dependent Claim
24 words
The ink composition according to claim 1, wherein the content of the glycol ether in the ink composition is 3 to 30% by weight.
Claim 7
Dependent Claim
14 words
The ink composition according to claim 1, which further comprises an acetylene glycol surfactant.
Claim 8
Dependent Claim
25 words
The ink composition according to claim 6, wherein the content of the acetylene glycol surfactant in the ink composition is 0.1 to 5% by weight.
Claim 9
Dependent Claim
12 words
The ink composition according to claim 1, which further comprises a glycol.
Claim 10
Dependent Claim
23 words
The ink composition according to claim 8, wherein the content of the glycol in the ink composition is 3 to 25% by weight.
Claim 11
Dependent Claim
28 words
A recording method comprising the step of depositing an ink composition onto a recording medium to perform printing, wherein the ink composition is one according to claim 1.
Claim 12
Dependent Claim
37 words
An ink jet recording method comprising the step of: ejecting a droplet of an ink composition; and depositing the droplet onto a recording medium to perform printing, wherein the ink composition is one according to claim 1.
Claim 13
Dependent Claim
23 words
The method according to claim 10, wherein the recording medium is plain paper, recycled paper, or a recording medium having a gloss layer.
Claim 14
Dependent Claim
14 words
A recorded medium obtained by the ink jet recording method according to claim 10.
Claim 15
Dependent Claim
16 words
An ink composition according to claim 1, wherein the water is present as the major component.
Claim 16
Dependent Claim
21 words
An ink composition according to claim 14, wherein the water is present in an amount of at least 60% by weight.
Claim 17
Dependent Claim
23 words
An ink composition according to claim 14, wherein the pigment is present in the ink composition in an amount of 2-15% by weight.
Claim 18
Dependent Claim
24 words
An ink composition according to claim 16, wherein the glycol ether is present in the ink composition in an amount of 3-30% by weight.
Claim 19
Dependent Claim
23 words
An ink composition according to claim 17, wherein the water-soluble emulsion is present in the composition in an amount of 0.5-10% by weight.
Claim 20
Dependent Claim
48 words
An ink composition according to claim 18, wherein the surface of the pigment has at least one functional group, selected from carbonyl, carboxyl, hydroxyl, and sulfone groups, or a salt thereof on the surface, thereby permitting the pigment to be dispersible and/or soluble in water without a dispersant.
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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) | 2003-10-17 | 2004-04-17 | 2004-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-10-17 | 2008-04-17 | 2008-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-10-17 | 2012-04-17 | 2012-10-17 | $7700.00 | Window Closed / Lapsed |