US5421871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ink composition for ink jet recording and process for producing the same
Assignee: Seiko Epson Corp
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Filing: 1993-10-01
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Granted: 1995-06-06
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Expires: 2013-10-01
Abstract
Abstract An ink composition for ink jet recording comprising a dye, 1 to 10% by weight of glycerin, 1 to 5% by weight of a monohydric alcohol having 4 or less carbon atoms, 0.5 to 10% by weight of 1,3-dimethyl-2-imidazolidinone and 75 to 95% by weight of water. The ink composition of the present invention can offer a good balance of properties required of the ink jet recording ink, especially quality of the print, dryability of the print, water-resistance of the print, storage stability and a property that does not attack members constituting a recording head and an ink passage.
Inventors
- 👤 Hiroyuki Onishi
- 👤 Kiyohiko Takemoto
- 👤 Etsuko Yoshiike
- 👤 Naomi Serizawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:30
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/02; C09D11/30
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
57 words
An ink composition for ink jet recording comprising 0.01% by weight or more of C.I. Direct Black 168 or 154, 1 to 10% by weight of glycerin, 1 to 10% by weight of a monohydric alcohol having 4 or less carbon atoms, 0.5 to 10% by weight of 1,3-dimethyl-2-imidazolidinone and 75 to 95% by weight of water.
Claim 2
Dependent Claim
57 words
An ink composition for ink jet recording comprising 0.01% by weight or more of C.I. Direct Black 168 or 154, 1 to 10% by weight of glycerin, 1 to 10% by weight of a monohydric alcohol having 4 or less carbon atoms, 0.5 to 10% by weight of 1,3-dimethyl-2-imidazolidinone and 75 to 95% by weight of water.
Claim 3
Dependent Claim
20 words
An ink composition according to claim 1, which further comprises a dye other than C.I. Direct Black 168 and 154.
Claim 4
Dependent Claim
19 words
An ink composition according to claim 1, wherein the monohydric alcohol having 4 or less carbon atoms is ethanol.
Claim 5
Dependent Claim
23 words
An ink composition according to claim 1, wherein the ratio of 1,3-dimethyl-2-imidazolidinone to glycerin is in the range of from 2:1 to 1:5.
Claim 6
Dependent Claim
40 words
A process for producing an ink composition according to claim 1, comprising adding a monohydric alcohol having 4 or less carbon atoms at a temperature of 40° C. or below to a mixture comprising a dye, glycerin, 1,3-dimethyl-2-imidazolidinone and water.
References Cited (Backward Citations)
JPS5698270A
Cited
US4599112A
Cited
US4505749A
Cited
JPS60123571A
Cited
US4973499A
Cited
US4965609A
Cited
US4767459A
Cited
US4957553A
Cited
EP0280458A1
Cited
US4838938A
Cited
US5141556A
Cited
JPH05125315A
Cited
JPH05125314A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-06-05 | 1998-12-05 | 1999-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-06-05 | 2002-12-05 | 2003-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-06-05 | 2006-12-05 | 2007-06-06 | $7700.00 | Window Closed / Lapsed |