US5990227A
Expired / Lapsed
US
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Ink set
Assignee: Canon Inc
•
Filing: 1997-02-19
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Granted: 1999-11-23
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Expires: 2017-02-19
Abstract
Abstract Disclosed herein is an ink-jet recording process which comprises applying a first liquid at least containing a water-soluble resin having at least one carboxyl group or anhydride thereof, or sulfonic group per molecule to a recording medium and then applying an ink at least comprising water, an organic solvent, a dye, an alkali-soluble resin and an alkali to the portions where the first liquid has adhered, thereby forming an image. An ink set and an instrument for use in such a process are also disclosed.
Inventors
- 👤 Yoshihisa Takizawa
- 👤 Makoto Aoki
- 👤 Yutaka Kurabayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:01
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/0011; B41M5/0017; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/21; B41J2/2107; B41J2/2114; C; C09; C09D; C09D11/00; C09D11/30; C09D11/40; C09D11/54
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
209 words
An ink set for ink-jet recording having a first, a second, a third and a fourth ink independently, each of the inks having a different color from each other, and being selected from the group consisting of a black ink and three color inks of yellow, magenta and cyan, wherein (1) the first ink contains a water-soluble resin having at least one carboxyl group or anhydride thereof, or sulfonic group in a molecule thereof, and the first ink's pH (pH 1 ) ranges from pH 1 to 6; (2) the second ink's pH (pH 2 ) ranges from pH 4 to 8, and the second ink contains (a) a water-soluble resin having at least one carboxyl group or anhydride thereof, or sulfonic group in a molecule thereof, or (b) an alkali-soluble resin and an alkali; (3) the third ink contains an alkali-soluble resin and an alkali, and the third ink's pH (pH 3 ) ranges from pH 6 to 10; (4) the fourth ink contains an alkali-soluble resin and an alkali and the fourth ink's pH (pH 4 ) ranges from pH 8 to 13; and the pHs of the first, second, third and fourth inks satisfy the relationship of pH 1 <pH 2 <pH 3 <pH 4 .
Claim 2
Dependent Claim
209 words
An ink set for ink-jet recording having a first, a second, a third and a fourth ink independently, each of the inks having a different color from each other, and being selected from the group consisting of a black ink and three color inks of yellow, magenta and cyan, wherein (1) the first ink contains a water-soluble resin having at least one carboxyl group or anhydride thereof, or sulfonic group in a molecule thereof, and the first ink's pH (pH 1 ) ranges from pH 1 to 6; (2) the second ink's pH (pH 2 ) ranges from pH 4 to 8, and the second ink contains (a) a water-soluble resin having at least one carboxyl group or anhydride thereof, or sulfonic group in a molecule thereof, or (b) an alkali-soluble resin and an alkali; (3) the third ink contains an alkali-soluble resin and an alkali, and the third ink's pH (pH 3 ) ranges from pH 6 to 10; (4) the fourth ink contains an alkali-soluble resin and an alkali and the fourth ink's pH (pH 4 ) ranges from pH 8 to 13; and the pHs of the first, second, third and fourth inks satisfy the relationship of pH 1 <pH 2 <pH 3 <pH 4 .
Claim 3
Dependent Claim
39 words
The ink set according to claim 1, wherein the water-soluble resin is a naturally-occurring or a synthetic water-soluble resin which has at least one carboxyl group or anhydride thereof, or sulfonic group in a molecule, or a mixture thereof.
Claim 4
Dependent Claim
70 words
The ink set according to claim 1, wherein the water-soluble resin is a polymer obtained by using, as a monomer, at least one of acrylic acid, methacrylic acid, itaconic acid, maleic acid and maleic anhydride, or a copolymer synthesized from at least one of said monomers and at least one of hydrophilic monomers having a hydrophilic group including a hydroxyl, amide, amino, ether, pyrrolidone or ethyleneimine group in a molecule.
Claim 5
Dependent Claim
23 words
The ink set according to claim 1, wherein the alkali-soluble resin is a copolymer of a hydrophilic monomer unit end a hydrophobic monomer.
Claim 6
Dependent Claim
22 words
The ink set according to claim 1, wherein the water-soluble resin has a weight average molecular weight of from 1,000 to 500,000.
Claim 7
Dependent Claim
22 words
The ink set according to claim 1, wherein the alkali-soluble resin has a weight average molecular weight of from 1,000 to 100,000.
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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) | 2002-11-22 | 2003-05-24 | 2003-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-11-22 | 2007-05-24 | 2007-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-11-22 | 2011-05-24 | 2011-11-23 | $7700.00 | Window Closed / Lapsed |