US20060238590A1
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Water-based ink set for ink-jet recording and ink-jet recording method
Assignee: Brother Industries Ltd
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Filing: 2006-04-20
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Granted: —
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Expires: 2026-04-20
Abstract
Abstract The water-based ink set for ink-jet recording includes a cyan ink and a blue ink with dynamic surface tensions thereof satisfying the following inequalities (I CB ), (II CB ), (III CB ) and (IV CB ) σ 30C ≦about 49 mN/m (I CB ) σ 30C +σ 30B ≦about 100 mN/m (II CB ) wherein σ 30C is the dynamic surface tension of the cyan ink at a lifetime of 30 ms and σ 30B is the dynamic surface tension of the blue ink at a lifetime of 30 ms, σ 1000B ≧about 36 mN/m (III CB ) σ 1000C +σ 1000B ≧about 70 mN/m (IV CB ) wherein σ 1000C is the dynamic surface tension of the cyan ink at a lifetime of 1,000 ms and σ 1000B is the dynamic surface tension of the blue ink at a lifetime of 1,000 ms.
Inventors
- 👤 Narumi Koga
- 👤 Masaya Fujioka
- 👤 Tomoyo Hamajima
- 👤 Narumi Kawai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:17
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/40
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
169 words
1 . A water-based ink set for ink-jet recording comprising a cyan ink and a blue ink, wherein dynamic surface tensions of the cyan ink and the blue ink as determined by a maximum bubble pressure method at a measurement temperature of 25° C. satisfy the following inequalities (I CB ), (II CB ), (III CB ) and (IV CB ): σ 30C ≦about 49 mN/m (I CB ) σ 30C +σ 30B ≦about 100 mN/m (II CB ) wherein σ 30C is the dynamic surface tension of the cyan ink at a lifetime of 30 ms and σ 30B is the dynamic surface tension of the blue ink at a lifetime of 30 ms, σ 1000B ≧about 36 mN/m (III CB ) σ 1000C +σ 1000B ≧about 70 mN/m (IV CB ) wherein σ 1000C is the dynamic surface tension of the cyan ink at a lifetime of 1,000 ms and σ 1000B is the dynamic surface tension of the blue ink at a lifetime of 1,000 ms.
Claim 2
Dependent Claim
169 words
1 . A water-based ink set for ink-jet recording comprising a cyan ink and a blue ink, wherein dynamic surface tensions of the cyan ink and the blue ink as determined by a maximum bubble pressure method at a measurement temperature of 25° C. satisfy the following inequalities (I CB ), (II CB ), (III CB ) and (IV CB ): σ 30C ≦about 49 mN/m (I CB ) σ 30C +σ 30B ≦about 100 mN/m (II CB ) wherein σ 30C is the dynamic surface tension of the cyan ink at a lifetime of 30 ms and σ 30B is the dynamic surface tension of the blue ink at a lifetime of 30 ms, σ 1000B ≧about 36 mN/m (III CB ) σ 1000C +σ 1000B ≧about 70 mN/m (IV CB ) wherein σ 1000C is the dynamic surface tension of the cyan ink at a lifetime of 1,000 ms and σ 1000B is the dynamic surface tension of the blue ink at a lifetime of 1,000 ms.
Claim 3
Dependent Claim
60 words
2 . The water-based ink set for ink-jet recording according to claim 1 , wherein: the cyan ink has a lightness (L*) in a range of from about 60 to about 85 in the L*a*b* calorimetric system; and the blue ink has a lightness (L*) in a range of from about 35 to about 45 in the L*a*b* calorimetric system.
Claim 4
Dependent Claim
62 words
3 . The water-based ink set for ink-jet recording according to claim 1 , wherein: the cyan ink has a hue angle (h) in a range of from about 215° to about 255° in the L*a*b* calorimetric system; and the blue ink has a hue angle (h) in a range of from about 270° to about 285° in the L*a*b* colorimetric system.
Claim 5
Dependent Claim
171 words
4 . The water-based ink set for ink-jet recording according to claim 1 , further comprising a green ink, wherein: dynamic surface tensions of the cyan ink and the green ink as determined by the maximum bubble pressure method at a measurement temperature of 25° C. satisfy the following inequalities (I CG ), (II CG ), (III CG ) and (IV CG ): σ 30C ≦about 49 mN/m (I CG ) σ 30C +σ 30G ≦about 100 mN/m (II CG ) wherein σ 30C is the dynamic surface tension of the cyan ink at a lifetime of 30 ms and σ 30G is the dynamic surface tension of the green ink at a lifetime of 30 ms, σ 1000G ≧about 36 mN/m (III CG ) σ 1000C +σ 1000G ≧about 70 mN/m (IV CG ) wherein σ 1000C is the dynamic surface tension of the cyan ink at a lifetime of 1,000 ms and σ 1000G is the dynamic surface tension of the green ink at a lifetime of 1,000 ms.
Claim 6
Dependent Claim
37 words
5 . The water-based ink set for ink-jet recording according to claim 4 , wherein: the green ink has a lightness (L*) in a range of from about 35 to about 60 in the L*a*b* calorimetric system.
Claim 7
Dependent Claim
38 words
6 . The water-based ink set for ink-jet recording according to claim 4 , wherein: the green ink has a hue angle (h) in a range of from about 175° to about 215° in the L*a*b* colorimetric system.
Claim 8
Dependent Claim
23 words
7 . The water-based ink set for ink-jet recording according to claim 1 , further comprising a yellow ink and/or a magenta ink.
Claim 9
Dependent Claim
169 words
8 . A water-based ink set for ink-jet recording comprising a cyan ink and a green ink, wherein dynamic surface tensions of the cyan ink and the green ink as determined by the maximum bubble pressure method at a measurement temperature of 25° C. satisfy the following inequalities (I CG ), (II CG ), (III CG ) and (IV CG ): σ 30C ≦about 49 mN/m (I CG ) σ 30C +σ 30G ≧about 100 mN/m (II CG ) wherein σ 30C is the dynamic surface tension of the cyan ink at a lifetime of 30 ms and σ 30G is the dynamic surface tension of the green ink at a lifetime of 30 ms, σ 1000G ≧about 36 mN/m (III CG ) σ 1000C +σ 1000G ≧about 70 mN/m (IV CG ) wherein σ 1000C is the dynamic surface tension of the cyan ink at a lifetime of 1,000 ms and σ 1000G is the dynamic surface tension of the green ink at a lifetime of 1,000 ms.
Claim 10
Dependent Claim
169 words
8 . A water-based ink set for ink-jet recording comprising a cyan ink and a green ink, wherein dynamic surface tensions of the cyan ink and the green ink as determined by the maximum bubble pressure method at a measurement temperature of 25° C. satisfy the following inequalities (I CG ), (II CG ), (III CG ) and (IV CG ): σ 30C ≦about 49 mN/m (I CG ) σ 30C +σ 30G ≧about 100 mN/m (II CG ) wherein σ 30C is the dynamic surface tension of the cyan ink at a lifetime of 30 ms and σ 30G is the dynamic surface tension of the green ink at a lifetime of 30 ms, σ 1000G ≧about 36 mN/m (III CG ) σ 1000C +σ 1000G ≧about 70 mN/m (IV CG ) wherein σ 1000C is the dynamic surface tension of the cyan ink at a lifetime of 1,000 ms and σ 1000G is the dynamic surface tension of the green ink at a lifetime of 1,000 ms.
Claim 11
Dependent Claim
60 words
9 . The water-based ink set for ink-jet recording according to claim 8 , wherein: the cyan ink has a lightness (L*) in a range of from about 60 to about 85 in the L*a*b* calorimetric system; and the green ink has a lightness (L*) in a range of from about 35 to about 60 in the L*a*b* calorimetric system.
Claim 12
Dependent Claim
62 words
10 . The water-based ink set for ink-jet recording according to claim 8 , wherein: the cyan ink has a hue angle (h) in a range of from about 215° to about 255° in the L*a*b* calorimetric system; and the green ink has a hue angle (h) in a range of from about 175° to about 215° in the L*a*b* calorimetric system.
Claim 13
Dependent Claim
23 words
11 . The water-based ink set for ink-jet recording according to claim 8 , further comprising a yellow ink and/or a magenta ink.
Claim 14
Dependent Claim
19 words
12 . An ink-jet recording method employing the water-based ink set for ink-jet recording according to claim 1 .
Claim 15
Dependent Claim
19 words
13 . An ink-jet recording method employing the water-based ink set for ink-jet recording according to claim 8 .
Claim 16
Dependent Claim
59 words
14 . An ink-jet recording method employing the water-based ink set for ink-jet recording according to claim 1 , wherein: the cyan ink having a lightness (L*) in a range of from about 60 to about 85 in the L*a*b* colorimetric system is employed in combination with the blue ink in a blue ink-recording portion on a recording material.
Claim 17
Dependent Claim
69 words
15 . An ink-jet recording method employing the water-based ink set for ink-jet recording according to claim 4 , wherein: the cyan ink having a lightness (L*) in a range of from about 60 to about 85 in the L*a*b* calorimetric system is employed in combination with the blue ink and the green ink in a blue ink-recording portion and a green ink-recording portion on a recording material, respectively.
Claim 18
Dependent Claim
59 words
16 . An ink-jet recording method employing the water-based ink set for ink-jet recording according to claim 8 , wherein: the cyan ink having a lightness (L*) in a range of from about 60 to about 85 in the L*a*b* calorimetric system is employed in combination with the green ink in a green ink-recording portion on a recording material.
References Cited (Backward Citations)
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