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US5954866A
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Ink for ink jet recording and image forming method using the same
Assignee: Seiko Epson Corp
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Filing: 1997-06-06
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Granted: 1999-09-21
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Expires: 2017-06-06
Abstract
Abstract An ink composition for ink jet recording is provided which can meet many property requirements for an ink composition used in ink jet recording and, in addition, can yield a good image on a recording medium having a layer comprising a water-soluble resin. An ink jet recording method using the same is also provided. An ink composition comprising a pigment as a colorant, an anionic surfactant having a polyoxyethylene group, a dispersant, and water is used to record an image on a recording medium having a layer comprising a water-soluble resin by ink jet recording.
Inventors
- 👤 Hitoshi Ohta
- 👤 Kiyohiko Takemoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:41
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/32; C09D11/322; B; B41; B41M; B41M5/00; B41M5/50; B41M5/52; B41M5/5218; B41M5/5254
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
60 words
An ink jet recording method comprising the steps of: ejecting droplets of an ink composition and depositing the droplets onto a recording medium to form an image, the ink composition comprising a pigment as a colorant, an anionic surfactant having a polyoxyethylene group, a dispersant, and water, the recording medium comprising a substrate bearing a layer comprising a water-soluble resin.
Claim 2
Dependent Claim
60 words
An ink jet recording method comprising the steps of: ejecting droplets of an ink composition and depositing the droplets onto a recording medium to form an image, the ink composition comprising a pigment as a colorant, an anionic surfactant having a polyoxyethylene group, a dispersant, and water, the recording medium comprising a substrate bearing a layer comprising a water-soluble resin.
Claim 3
Dependent Claim
12 words
A record medium recorded by the recording method according to claim 1.
Claim 4
Dependent Claim
40 words
The method according to claim 1, wherein the ink composition comprises about 0.5 to 30% by weight of the pigment, about 0.01 to 5.0% by weight of the anionic surfactant, and about 0.05 to 30% by weight of the dispersant.
Claim 5
Dependent Claim
17 words
The method according to claim 1, wherein the ink composition comprises a resin emulsion and/or a saccharide.
Claim 6
Dependent Claim
56 words
The method according to claim 4, wherein the ink composition comprises 0.5 to 30% by weight of the pigment, 0.1 to 5% by weight, in terms of resin solid content, of the resin emulsion, 0.01 to 5% by weight of the anionic surfactant having a polyoxyethylene group, and 0.1 to 40% by weight of the saccharide.
Claim 7
Dependent Claim
15 words
The method according to claim 1, wherein the anionic surfactant is polyoxy-ethylene nonylphenyl ether sulfate.
Claim 8
Dependent Claim
14 words
The method according to claim 1, wherein the dispersant is a styrene/acrylic acid copolymer.
Claim 9
Dependent Claim
27 words
The method according to claim 7, wherein the styrene/acrylic acid copolymer has a molecular weight of 1,600 to 25,000 and an acid value of 100 to 250.
Claim 10
Dependent Claim
20 words
The method according to claim 1, wherein the ink composition further comprises 0.1 to 30% by weight of a humectant.
Claim 11
Dependent Claim
20 words
The method according to claim 1, wherein the water-soluble resin is selected from polyvinyl alcohol and/or a polyvinyl alcohol derivative.
Claim 12
Dependent Claim
12 words
A record medium recorded by the recording method according to claim 3.
Claim 13
Dependent Claim
12 words
A record medium recorded by the recording method according to claim 4.
Claim 14
Dependent Claim
12 words
A record medium recorded by the recording method according to claim 5.
Claim 15
Dependent Claim
12 words
A record medium recorded by the recording method according to claim 6.
Claim 16
Dependent Claim
12 words
A record medium recorded by the recording method according to claim 7.
Claim 17
Dependent Claim
12 words
A record medium recorded by the recording method according to claim 8.
Claim 18
Dependent Claim
12 words
A record medium recorded by the recording method according to claim 9.
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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) | 2002-09-20 | 2003-03-22 | 2003-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-09-20 | 2007-03-22 | 2007-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-09-20 | 2011-03-22 | 2011-09-21 | $7700.00 | Window Closed / Lapsed |