US5968244A
Expired / Lapsed
US
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Ink for ink-jet recording
Assignee: Minolta Co Ltd
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Filing: 1998-02-17
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Granted: 1999-10-19
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Expires: 2018-02-17
Abstract
Abstract The present invention relates to an ink for ink-jet recording containing carbon black particles having a specific surface active hydrogen content, water, and polyethyleneimine or alkylene oxide adduct of acetylene glycol.
Inventors
- 👤 Takamasa Ueda
- 👤 Tomoko Yamamoto
- 👤 Masakazu Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:59
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/32; C09D11/322
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
28 words
An ink for ink-jetting, comprising: an alkylene oxide adduct of acetylene glycol; a carbon black having a surface active hydrogen content of 1.5 mmol/g or more; and water.
Claim 2
Dependent Claim
28 words
An ink for ink-jetting, comprising: an alkylene oxide adduct of acetylene glycol; a carbon black having a surface active hydrogen content of 1.5 mmol/g or more; and water.
Claim 3
Dependent Claim
52 words
The ink of claim 1, wherein the alkylene oxide adduct of acetylene glycol is represented by the formula (A): ##STR2## in which R 1 -R 4 are respectively a lower alkyl group; p is an integer of 2 or 3: and q and r are respectively an integer of 1 or more.
Claim 4
Dependent Claim
31 words
The ink of claim 1, wherein the alkylene oxide adduct of acetylene glycol is contained at an amount of 0.01 to 5% by weight, based on total weight of the ink.
Claim 5
Dependent Claim
42 words
The ink of claim 2, wherein R 1 and R 2 are the same alkyl group having 1-5 carbon atoms, R 3 and R 4 are the same alkyl group having 1-5 carbon atoms, and q+r is within the range of 2-60.
Claim 6
Dependent Claim
38 words
The ink of claim 4, wherein R 1 and R 2 are the same alkyl group having 2-4 carbon atoms, R 3 and R 4 are respectively a methyl group, and q+r is within the range of 2-30.
Claim 7
Dependent Claim
23 words
The ink of claim 1, wherein the carbon black has a dispersion mean particle size of 20 to 200 nm in the ink.
Claim 8
Dependent Claim
20 words
The ink of claim 1, wherein the carbon black has the surface active hydrogen content of 1.5 to 5 mmol/g.
Claim 9
Dependent Claim
14 words
The ink of claim 1, which further comprises resin particles having an ionic group.
Claim 10
Dependent Claim
19 words
The ink of claim 8, wherein the resin particles having a mean particle size of 0.01 to 1 μm.
Claim 11
Dependent Claim
27 words
The ink of claim 8, wherein the resin particles are contained at an amount of 0.01 to 15% by weight, based on total weight of the ink.
Claim 12
Dependent Claim
38 words
The ink of claim 8, wherein the resin particles have the ionic group selected from the group consisting of carboxylic acid-alkali metal salt group, carboxylic acid-ammonium salt group, sulfonic acid-alkali metal salt group and sulfonic acid-ammonium salt group.
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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) | 2002-10-18 | 2003-04-19 | 2003-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-10-18 | 2007-04-19 | 2007-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-10-18 | 2011-04-19 | 2011-10-19 | $7700.00 | Window Closed / Lapsed |