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Water base ink set for ink-jet recording
Assignee: Brother Industries Ltd
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Filing: 2005-09-02
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Granted: 2007-10-30
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Expires: 2025-09-02
Abstract
Abstract In a water base ink set for ink-jet recording including a pigment-based black ink and a dye-based yellow ink, a first water-soluble dye in which a number of counter ion or ions per one molecule is not more than 3 and a hue angle h* is 95° to 105° is used, as the dye used in the yellow ink, together with a second water-soluble dye in which a number of counter ion or ions per one molecule is not more than 3 and a hue angle h* is 75° to 85°; or 30° to 70°; or 0° to 30° or 350° to 360°. When the ink set is applied to a general ink-jet printer with a simple maintenance system, the coagulation of black pigment in the printer and the blurring or bleeding on the printing paper are prevented, thereby realizing a satisfactory and complex coloring of the dye-based yellow ink.
Inventors
- 👤 Junichiro Sugimoto
- 👤 Masaya Fujioka
- 👤 Kazuma Goto
- 👤 Narumi Koga
- 👤 Shunichi Higashiyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:39
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/40
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
136 words
A water base ink set for ink-jet recording comprising: a pigment-based black ink containing water, a self-dispersible black pigment, and a water-soluble solvent; and a dye-based yellow ink containing water, a first water-soluble dye in which a number of counter ion or ions per one molecule is not more than 3 and a hue angle h* is 95° to 105°, and a second water-soluble dye in which a number of counter ion or ions per one molecule is not more than 3 and a hue angle h* is 75° to 85°, wherein: a weight ratio of the second water-soluble dye to the first water-soluble dye in the dye-based yellow ink is 10.0 to 100.0%; and a total content of the first and second water-soluble dyes in the dye-based yellow ink is 1.8 to 5.5% by weight.
Claim 2
Dependent Claim
136 words
A water base ink set for ink-jet recording comprising: a pigment-based black ink containing water, a self-dispersible black pigment, and a water-soluble solvent; and a dye-based yellow ink containing water, a first water-soluble dye in which a number of counter ion or ions per one molecule is not more than 3 and a hue angle h* is 95° to 105°, and a second water-soluble dye in which a number of counter ion or ions per one molecule is not more than 3 and a hue angle h* is 75° to 85°, wherein: a weight ratio of the second water-soluble dye to the first water-soluble dye in the dye-based yellow ink is 10.0 to 100.0%; and a total content of the first and second water-soluble dyes in the dye-based yellow ink is 1.8 to 5.5% by weight.
Claim 3
Dependent Claim
35 words
The ink set for ink-jet recording according to claim 1 , wherein a value of a lightness L* is 84≦L*≦90 and a value of the hue angle h* is 85°≦h*≦95° in the dye-based yellow ink.
Claim 4
Dependent Claim
136 words
A water base ink set for ink-jet recording comprising: a pigment-based black ink containing water, a self-dispersible black pigment, and a water-soluble solvent; and a dye-based yellow ink containing water, a first water-soluble dye in which a number of counter ion or ions per one molecule is not more than 3 and a hue angle h* is 95° to 105°, and a second water-soluble dye in which a number of counter ion or ions per one molecule is not more than 3 and a hue angle h* is 30° to 70°, wherein: a weight ratio of the second water-soluble dye to the first water-soluble dye in the dye-based yellow ink is 0.8 to 5.5%; and a total content of the first and second water-soluble dyes in the dye-based yellow ink is 1.8 to 5.5% by weight.
Claim 5
Dependent Claim
136 words
A water base ink set for ink-jet recording comprising: a pigment-based black ink containing water, a self-dispersible black pigment, and a water-soluble solvent; and a dye-based yellow ink containing water, a first water-soluble dye in which a number of counter ion or ions per one molecule is not more than 3 and a hue angle h* is 95° to 105°, and a second water-soluble dye in which a number of counter ion or ions per one molecule is not more than 3 and a hue angle h* is 30° to 70°, wherein: a weight ratio of the second water-soluble dye to the first water-soluble dye in the dye-based yellow ink is 0.8 to 5.5%; and a total content of the first and second water-soluble dyes in the dye-based yellow ink is 1.8 to 5.5% by weight.
Claim 6
Dependent Claim
35 words
The ink set for ink-jet recording according to claim 3 , wherein a value of a lightness L* is 84≦L*≦90 and a value of the hue angle h* is 85°≦h*≦95° in the dye-based yellow ink.
Claim 7
Dependent Claim
140 words
A water base ink set for ink-jet recording comprising: a pigment-based black ink containing water, a self-dispersible black pigment, and a water-soluble solvent; and a dye-based yellow ink containing water, a first water-soluble dye in which a number of counter ion or ions per one molecule is not more than 3 and a hue angle h* is 95° to 105°, and a second water-soluble dye in which a number of counter ion or ions per one molecule is not more than 3 and a hue angle h* is 0° to 30° or 350° to 360°, wherein: a weight ratio of the second water-soluble dye to the first water-soluble dye in the dye-based yellow ink is 0.3 to 3.5%; and a total content of the first and second water-soluble dyes in the dye-based yellow ink is 1.8 to 5.5% by weight.
Claim 8
Dependent Claim
140 words
A water base ink set for ink-jet recording comprising: a pigment-based black ink containing water, a self-dispersible black pigment, and a water-soluble solvent; and a dye-based yellow ink containing water, a first water-soluble dye in which a number of counter ion or ions per one molecule is not more than 3 and a hue angle h* is 95° to 105°, and a second water-soluble dye in which a number of counter ion or ions per one molecule is not more than 3 and a hue angle h* is 0° to 30° or 350° to 360°, wherein: a weight ratio of the second water-soluble dye to the first water-soluble dye in the dye-based yellow ink is 0.3 to 3.5%; and a total content of the first and second water-soluble dyes in the dye-based yellow ink is 1.8 to 5.5% by weight.
Claim 9
Dependent Claim
35 words
The ink set for ink-jet recording according to claim 5 , wherein a value of a lightness L* is 84≦L*≦90 and a value of the hue angle h* is 85°≦h*≦95° in the dye-based yellow ink.
Claim 10
Dependent Claim
141 words
A water base ink set for ink-jet recording comprising: a pigment-based black ink containing water, a self-dispersible black pigment, and a water-soluble solvent; and a dye-based yellow ink containing water, a first water-soluble dye in which a number of counter ion or ions per one molecule is not more than 3, and a second water-soluble dye in which a number of counter ion or ions per one molecule is not more than 3 and which has a hue angle h* different from a hue angle h* of the first water-soluble dye by not less than 50°, wherein: a weight ratio of the second water-soluble dye to the first water-soluble dye in the dye-based yellow ink is 0.3 to 5.5%; and a total content of the first and second water-soluble dyes in the dye-based yellow ink is 1.8 to 5.5% by weight.
Claim 11
Dependent Claim
141 words
A water base ink set for ink-jet recording comprising: a pigment-based black ink containing water, a self-dispersible black pigment, and a water-soluble solvent; and a dye-based yellow ink containing water, a first water-soluble dye in which a number of counter ion or ions per one molecule is not more than 3, and a second water-soluble dye in which a number of counter ion or ions per one molecule is not more than 3 and which has a hue angle h* different from a hue angle h* of the first water-soluble dye by not less than 50°, wherein: a weight ratio of the second water-soluble dye to the first water-soluble dye in the dye-based yellow ink is 0.3 to 5.5%; and a total content of the first and second water-soluble dyes in the dye-based yellow ink is 1.8 to 5.5% by weight.
Claim 12
Dependent Claim
25 words
The ink set for ink-jet recording according to claim 7 , wherein the hue angle h in the first water-soluble dye is 95° to 105°.
Claim 13
Dependent Claim
35 words
The ink set for ink-jet recording according to claim 7 , wherein a value of a lightness L* is 84≦L*≦90 and a value of the hue angle h* is 85°≦h*≦95° in the dye-based yellow ink.
Claim 14
Dependent Claim
61 words
The ink set for ink-jet recording according to claim 7 , wherein in the dye-based yellow ink, the hue angle h* of the second water-soluble dye is different from the hue angle h* of the first water-soluble dye by not less than 90°, and the weight ratio of the second water-soluble dye to the first water-soluble dye is 0.3 to 3.5%.
Claim 15
Dependent Claim
35 words
The ink set for ink-jet recording according to claim 10 , wherein a value of a lightness L* is 84≦L*≦90 and a value of the hue angle h* is 85°≦h*≦95° in the dye-based yellow ink.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 2010-10-29 | 2011-04-30 | 2011-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2014-10-29 | 2015-04-30 | 2015-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2018-10-29 | 2019-04-30 | 2019-10-30 | $7700.00 | Window Closed / Lapsed |