US6602333B2
Expired / Lapsed
US
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Ink set for ink-jet recording, process for producing same, method of image recording, and print
Assignee: Seiko Epson Corp
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Filing: 2000-12-14
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Granted: 2003-08-05
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Expires: 2020-12-14
Abstract
Abstract The present invention relates to an ink jet recording ink set comprising a plurality of ink compositions each containing at least a colorant, a water-soluble organic solvent and water; and to a preparation process thereof. The invention is characterized by that the flowing characteristics or dynamic viscoelasticity at 20° C. of each of said plurality of ink compositions are set to satisfy specific conditions. The present invention also relates to an image recording method and recorded matter having an image formed thereon, each of the image being formed using the above-described ink jet recording ink set or an ink jet recording ink set prepared by the above-described process.
Inventors
- 👤 Toshiyuki Miyabayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:23
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/40; B; B41; B41M; B41M5/00; B41M5/0023
Claims Analysis
Total Claims: 59
Claim 1
Independent Claim
127 words
An ink jet recording ink set comprising a plurality of ink compositions each containing at least a colorant, a water-soluble organic solvent and water, wherein among said plurality of ink compositions, a difference in zero shear viscosity which is a value at sin θ=0 (θ=0) is 0.2 mPa·s or less and a difference in the slope of a sin θ vs. viscosity curve is within 0.04, said sin θ vs. viscosity curve being obtained by carrying out rolling-ball system measurement of the viscosity of each of the ink compositions under the temperature condition of 20° C. while changing an inclination angle θ to predetermined angles, determining the viscosity at the predetermined angles, and plotting the sin θ and the viscosity along the abscissa and the ordinate, respectively.
Claim 2
Dependent Claim
127 words
An ink jet recording ink set comprising a plurality of ink compositions each containing at least a colorant, a water-soluble organic solvent and water, wherein among said plurality of ink compositions, a difference in zero shear viscosity which is a value at sin θ=0 (θ=0) is 0.2 mPa·s or less and a difference in the slope of a sin θ vs. viscosity curve is within 0.04, said sin θ vs. viscosity curve being obtained by carrying out rolling-ball system measurement of the viscosity of each of the ink compositions under the temperature condition of 20° C. while changing an inclination angle θ to predetermined angles, determining the viscosity at the predetermined angles, and plotting the sin θ and the viscosity along the abscissa and the ordinate, respectively.
Claim 3
Dependent Claim
34 words
The ink jet recording ink set according to claim 1 , wherein each of the ink compositions has a zero shear viscosity of 3 to 10 mPa·s and a slope of −0.1 to 0.
Claim 4
Dependent Claim
113 words
An inkjet recording ink set comprising a plurality of ink compositions each containing at least a colorant, a water-soluble organic solvent and water, wherein each of said plurality of ink compositions has flowing characteristics at 20° C. set to satisfy the following expression (I): 0.6 ≤ log σ γ = 5 · - log σ γ = 3 · log 5 - log 3 ( I ) wherein σ γ=3 : shear stress (Pa) when the shear rate of the ink is 3 (sec −1 ), and σ γ=5 : shear stress (Pa) when the shear rate of the ink is 5 (sec −1 ).
Claim 5
Dependent Claim
113 words
An inkjet recording ink set comprising a plurality of ink compositions each containing at least a colorant, a water-soluble organic solvent and water, wherein each of said plurality of ink compositions has flowing characteristics at 20° C. set to satisfy the following expression (I): 0.6 ≤ log σ γ = 5 · - log σ γ = 3 · log 5 - log 3 ( I ) wherein σ γ=3 : shear stress (Pa) when the shear rate of the ink is 3 (sec −1 ), and σ γ=5 : shear stress (Pa) when the shear rate of the ink is 5 (sec −1 ).
Claim 6
Dependent Claim
97 words
The ink jet recording ink set according to claim 3 , wherein the flowing characteristics at 20° C. is set to satisfy the following expression (II): 0.8 ≤ log σ γ = 5 · - log σ γ = 3 · log 5 - log 3 ≤ 1 ( II ) wherein σ γ=3 : shear stress (Pa) when the shear rate of the ink is 3 (sec −1 ), and σ γ=5 : shear stress (Pa) when the shear rate of the ink is 5 (sec −1 ).
Claim 7
Dependent Claim
97 words
The ink jet recording ink set according to claim 3 , wherein the flowing characteristics at 20° C. are set to satisfy the following expression (III): 0.9 ≤ log σ γ = 5 · - log σ γ = 3 · log 5 - log 3 ≤ 1 ( III ) wherein σ γ=3 : shear stress (Pa) when the shear rate of the ink is 3 (sec −1 ), and σ γ=5 : shear stress (Pa) when the shear rate of the ink is 5 (sec −1 ).
Claim 8
Dependent Claim
135 words
An ink jet recording ink set comprising a plurality of ink compositions each containing at least a colorant, a water-soluble organic solvent and water, wherein each of said plurality of ink compositions having flowing characteristics at 20° C. set to satisfy the below-described expression (IV): 0.6 ≤ log σ γ = 4 × 10 4 · - log σ γ = 3 × 10 4 · log ( 4 × 10 4 ) - log ( 3 × 10 4 ) ≤ 1 ( IV ) wherein σ γ=3×10 4 : shear stress (Pa) when the shear rate of the ink is 3×10 4 (sec −1 ), and σ γ=4×10 4 : shear stress (Pa) when the shear rate of the ink is 4×10 4 (sec −1 ).
Claim 9
Dependent Claim
135 words
An ink jet recording ink set comprising a plurality of ink compositions each containing at least a colorant, a water-soluble organic solvent and water, wherein each of said plurality of ink compositions having flowing characteristics at 20° C. set to satisfy the below-described expression (IV): 0.6 ≤ log σ γ = 4 × 10 4 · - log σ γ = 3 × 10 4 · log ( 4 × 10 4 ) - log ( 3 × 10 4 ) ≤ 1 ( IV ) wherein σ γ=3×10 4 : shear stress (Pa) when the shear rate of the ink is 3×10 4 (sec −1 ), and σ γ=4×10 4 : shear stress (Pa) when the shear rate of the ink is 4×10 4 (sec −1 ).
Claim 10
Dependent Claim
115 words
The ink jet recording ink set according to claim 6 , wherein said flowing characteristics at 20° C. are set to satisfy the following expression (V): 0.8 ≤ log σ γ = 4 × 10 4 · - log σ γ = 3 × 10 4 · log ( 4 × 10 4 ) - log ( 3 × 10 4 ) ≤ 1 ( V ) wherein σ γ=3×10 4 : shear stress (Pa) when the shear rate of the ink is 3×10 4 (sec −1 ), and σ γ=4×10 4 : shear stress (Pa) when the shear rate of the ink is 4×10 4 (sec −1 ).
Claim 11
Dependent Claim
115 words
The ink jet recording ink set according to claim 6 , wherein said flowing characteristics at 20° C. are set to satisfy the following formula (VI): 0.9 ≤ log σ γ = 4 × 10 4 · - log σ γ = 3 × 10 4 · log ( 4 × 10 4 ) - log ( 3 × 10 4 ) ≤ 1 ( VI ) wherein σ γ=3×10 4 : shear stress (Pa) when the shear rate of the ink is 3×10 4 (sec −1 ), and σ γ=4×10 4 : shear stress (Pa) when the shear rate of the ink is 4×10 4 (sec −1 ).
Claim 12
Dependent Claim
116 words
An ink jet recording ink set comprising a plurality of ink compositions each containing at least a colorant, a water-soluble organic solvent and water, wherein each of said plurality of ink compositions has dynamic viscoelasticity at 20° C. set to satisfy the following expression (VII): 1.2 ≤ log G ω = 0.8 ′ - log G ω = 0.6 ′ log 0.8 - log 0.6 ≤ 2 ( VII ) wherein G′ ω=0.6 : storage shear modulus (Pa) when frequency (ω) applied to the ink composition is 0.6 rad/s, and, G′ ω=0.8 : storage shear modulus (Pa) when frequency (ω) applied to the ink composition is 0.8 rad/s.
Claim 13
Dependent Claim
116 words
An ink jet recording ink set comprising a plurality of ink compositions each containing at least a colorant, a water-soluble organic solvent and water, wherein each of said plurality of ink compositions has dynamic viscoelasticity at 20° C. set to satisfy the following expression (VII): 1.2 ≤ log G ω = 0.8 ′ - log G ω = 0.6 ′ log 0.8 - log 0.6 ≤ 2 ( VII ) wherein G′ ω=0.6 : storage shear modulus (Pa) when frequency (ω) applied to the ink composition is 0.6 rad/s, and, G′ ω=0.8 : storage shear modulus (Pa) when frequency (ω) applied to the ink composition is 0.8 rad/s.
Claim 14
Dependent Claim
97 words
The ink jet recording ink set according to claim 9 , wherein said dynamic viscoelasticity at 20° C. is set to satisfy the following expression (VIII): 1.6 ≤ log G ω = 0.8 ′ - log G ω = 0.6 ′ log 0.8 - log 0.6 ≤ 2 ( VIII ) wherein G′ ω=0.6 : storage shear modulus (Pa) when applied frequency (ω) to the ink composition is 0.6 rad/s, and, G′ ω=0.8 : storage shear modulus (Pa) when applied frequency (ω) to the ink composition is 0.8 rad/s.
Claim 15
Dependent Claim
97 words
The ink jet recording ink set according to claim 9 , wherein said dynamic viscoelasticity at 20° C. is set to satisfy the following expression (IX): 1.8 ≤ log G ω = 0.8 ′ - log G ω = 0.6 ′ log 0.8 - log 0.6 ≤ 2 ( IX ) wherein G′ ω=0.6 : storage shear modulus (Pa) when applied frequency (ω) to the ink composition is 0.6 rad/s, and, G′ ω=0.8 : storage shear modulus (Pa) when applied frequency (ω) to the ink composition is 0.8 rad/s.
Claim 16
Dependent Claim
26 words
The ink jet recording ink set according to any one of claims 1 , 3 , 6 and 9 , wherein the colorant is a pigment.
Claim 17
Dependent Claim
26 words
The ink jet recording set according to any one of claims 1 , 3 6 and 9 , wherein the colorant is a self-dispersion type pigment.
Claim 18
Dependent Claim
41 words
The ink jet recording ink set according to claim 13 , wherein said self-dispersion type pigment has a surface hydrophilized with a functional group selected from the class consisting of carbonyl, carboxyl, hydroxyl, sulfone and sulfonic acid groups, and salts thereof.
Claim 19
Dependent Claim
27 words
The ink jet recording ink set according to any one of claims 1 , 3 , 6 and 9 , wherein said colorant is a microencapsulated pigment.
Claim 20
Dependent Claim
25 words
The ink jet recording ink set according to claim 15 , wherein said micro-encapsulated pigment is obtained by coating a pigment with a polymer compound.
Claim 21
Dependent Claim
46 words
The ink jet recording ink set according to claim 16 , wherein said polymer compound mainly comprising at least one compound selected from the group consisting of vinyl-based polymer compounds, polyesters, polyamides, polyimides, polyurethanes, amino-based polymer compounds, silicon-containing polymers, sulfur-containing polymers, fluorine-containing polymers and epoxy resins.
Claim 22
Dependent Claim
54 words
The ink jet recording ink set according to claim 16 , wherein said polymer compound is a crosslinked-structure-having polymer compound obtained by enclosing the pigment with an organic phase containing at least a polymer compound having a crosslinking reactive group and a hydrophilic group and a crosslinking agent and then carrying out crosslinking reaction.
Claim 23
Dependent Claim
36 words
The ink jet recording ink set according to claim 16 , wherein said polymer compound is obtained by polymerizing a polymerizable surfactant having a polymerizable group, a hydrophobic group and a hydrophilic group with a monomer.
Claim 24
Dependent Claim
20 words
The ink jet recording ink set according to claim 19 , wherein said polymerizable group is an unsaturated hydrocarbon group.
Claim 25
Dependent Claim
35 words
The ink jet recording ink set according to claim 20 , wherein said unsaturated hydrocarbon group is at least one selected from the class consisting of vinyl, allyl, acryloyl, methacryloyl, propenyl, vinylidene and vinylene groups.
Claim 26
Dependent Claim
40 words
The ink jet recording ink set according to claim 19 , wherein the hydrophilic group of said polymerizable surfactant is at least one selected from the class consisting of sulfone, sulfonic acid, carboxyl, carbonyl and hydroxyl groups and salts thereof.
Claim 27
Dependent Claim
18 words
The ink jet recording ink set according to claim 19 , wherein said monomer contains a crosslinking monomer.
Claim 28
Dependent Claim
36 words
The ink jet recording ink set according to any one of claims 1 , 3 , 6 and 9 , wherein said colorant is a water-insoluble or water-sparingly-soluble dye selected from disperse dyes and oil-soluble dyes.
Claim 29
Dependent Claim
33 words
The ink jet recording ink set according to any one of claims 1 , 3 , 6 and 9 , wherein said colorant has been dispersed in an aqueous medium by a dispersant.
Claim 30
Dependent Claim
21 words
The ink jet recording ink set according to claim 25 , wherein said dispersant is a polymer dispersant or a surfactant.
Claim 31
Dependent Claim
51 words
The ink jet recording ink set according to claim 26 , wherein said polymer dispersant comprises a polymer having, in the molecule thereof, at least a moiety having an aromatic ring and/or an aliphatic ring and a moiety having a carboxyl group and/or a sulfonic acid group, and/or a salt thereof.
Claim 32
Dependent Claim
31 words
The ink jet recording ink set according to any one of claims 1 , 3 , 6 and 9 , wherein said plurality of ink compositions each contains a polar solvent.
Claim 33
Dependent Claim
35 words
The ink jet recording ink set according to claim 28 , wherein said polar solvent contains at least one solvent selected from the group consisting of 2-pyrrolidone, N-methylpyrrolidone, ε-caprolactam, dimethylsulfoxide, sulfolane, morpholine, N-ethylmorpholine and 1,3-dimethyl-2-imidazolidinone.
Claim 34
Dependent Claim
35 words
The ink jet recording ink set according to any one of claims 1 , 3 , 6 and 9 , wherein said plurality of ink compositions each contains an anionic surfactant and/or a nonionic surfactant.
Claim 35
Dependent Claim
36 words
The ink jet recording ink set according to any one of claims 1 , 3 , 6 and 9 , wherein said plurality of ink compositions each contains an acetylene glycol compound as the nonionic surfactant.
Claim 36
Dependent Claim
31 words
The ink jet recording ink set according to any one of claims 1 , 3 , 6 and 9 , wherein said plurality of ink compositions each contains a glycol ether.
Claim 37
Dependent Claim
30 words
The ink jet recording ink set according to any one of claims 1 , 3 , 6 and 9 , wherein said plurality of ink compositions each contains a 1,2-alkyldiol.
Claim 38
Dependent Claim
36 words
The ink jet recording ink set according to any one of claims 1 , 3 , 6 and 9 , wherein each of said plurality of ink compositions has a surface-tension of 20 to 45 mN/m.
Claim 39
Dependent Claim
134 words
A process for preparing an ink jet recording ink set comprising a plurality of ink compositions each containing at least a colorant, a water-soluble organic solvent and water, which comprises adjusting said plurality of ink compositions so that a difference in zero shear viscosity which is a value at sin θ=0 (θ=0) is 0.2 mPa·s or less and a difference in the slope of a sin θ vs. viscosity curve is within 0.04, said sin θ vs. viscosity curve being obtained by carrying out rolling-ball system measurement of the viscosity of each of the ink compositions under the temperature condition of 20° C. while changing an inclination angle θ to predetermined angles, determining the viscosity at the predetermined angles, and plotting the sin θ and the viscosity along the abscissa and the ordinate, respectively.
Claim 40
Dependent Claim
134 words
A process for preparing an ink jet recording ink set comprising a plurality of ink compositions each containing at least a colorant, a water-soluble organic solvent and water, which comprises adjusting said plurality of ink compositions so that a difference in zero shear viscosity which is a value at sin θ=0 (θ=0) is 0.2 mPa·s or less and a difference in the slope of a sin θ vs. viscosity curve is within 0.04, said sin θ vs. viscosity curve being obtained by carrying out rolling-ball system measurement of the viscosity of each of the ink compositions under the temperature condition of 20° C. while changing an inclination angle θ to predetermined angles, determining the viscosity at the predetermined angles, and plotting the sin θ and the viscosity along the abscissa and the ordinate, respectively.
Claim 41
Dependent Claim
47 words
The process for preparing an ink jet recording ink set according to claim 35 , which comprises adjusting each of said plurality of ink compositions to have a zero shear viscosity of 3 to 10 mPa·s and a slope falling within a range of −0.1 to 0.
Claim 42
Dependent Claim
121 words
A process for preparing an ink jet recording ink set comprising a plurality of ink compositions each containing at least a colorant, a water-soluble organic solvent and water, which comprises adjusting flowing characteristics at 20° C. of each of said plurality of ink compositions to satisfy the following expression (I): 0.6 ≤ log σ γ = 5 · - log σ γ = 3 · log 5 - log 3 ≤ 1 ( I ) wherein σ γ=3 : shear stress (Pa) when the shear rate of the ink is 3 (sec −1 ), and σ γ=5 : shear stress (Pa) when the shear rate of the ink is 5 (sec −1 ).
Claim 43
Dependent Claim
121 words
A process for preparing an ink jet recording ink set comprising a plurality of ink compositions each containing at least a colorant, a water-soluble organic solvent and water, which comprises adjusting flowing characteristics at 20° C. of each of said plurality of ink compositions to satisfy the following expression (I): 0.6 ≤ log σ γ = 5 · - log σ γ = 3 · log 5 - log 3 ≤ 1 ( I ) wherein σ γ=3 : shear stress (Pa) when the shear rate of the ink is 3 (sec −1 ), and σ γ=5 : shear stress (Pa) when the shear rate of the ink is 5 (sec −1 ).
Claim 44
Dependent Claim
109 words
The process for preparing an ink jet recording ink set according to claim 37 , which comprises adjusting the flowing characteristics at 20° C. of each of said plurality of ink compositions to satisfy the following formula (II): 0.8 ≤ log σ γ = 5 · - log σ γ = 3 · log 5 - log 3 ≤ 1 ( II ) wherein σ γ=3 : shear stress (Pa) when the shear rate of the ink is 3 (sec −1 ), and σ γ=5 : shear stress (Pa) when the shear rate of the ink is 5 (sec −1 ).
Claim 45
Dependent Claim
109 words
The process for preparing an ink jet recording ink set according to claim 37 , which comprises adjusting the flowing characteristics at 20° C. of each of said plurality of ink compositions to satisfy the following expression (III): 0.9 ≤ log σ γ = 5 · - log σ γ = 3 · log 5 - log 3 ≤ 1 ( III ) wherein σ γ=3 : shear stress (Pa) when the shear rate of the ink is 3 (sec −1 ), and σ γ=5 : shear stress (Pa) when the shear rate of the ink is 5 (sec −1 ).
Claim 46
Dependent Claim
139 words
A process for preparing an ink jet recording ink set comprising a plurality of ink compositions each containing at least a colorant, a water-soluble organic solvent and water, which comprises adjusting flowing characteristics at 20° C. of each of said plurality of ink compositions to satisfy the following expression (IV): 0.6 ≤ log σ γ = 4 × 10 4 · - log σ γ = 3 × 10 4 · log ( 4 × 10 4 ) - log ( 3 × 10 4 ) ≤ 1 ( IV ) wherein σ γ=3×10 4 : shear stress (Pa) when the shear rate of the ink is 3×10 4 (sec −1 ), and σ γ=4×10 4 : shear stress (Pa) when the shear rate of the ink is 4×10 4 (sec −1 ).
Claim 47
Dependent Claim
139 words
A process for preparing an ink jet recording ink set comprising a plurality of ink compositions each containing at least a colorant, a water-soluble organic solvent and water, which comprises adjusting flowing characteristics at 20° C. of each of said plurality of ink compositions to satisfy the following expression (IV): 0.6 ≤ log σ γ = 4 × 10 4 · - log σ γ = 3 × 10 4 · log ( 4 × 10 4 ) - log ( 3 × 10 4 ) ≤ 1 ( IV ) wherein σ γ=3×10 4 : shear stress (Pa) when the shear rate of the ink is 3×10 4 (sec −1 ), and σ γ=4×10 4 : shear stress (Pa) when the shear rate of the ink is 4×10 4 (sec −1 ).
Claim 48
Dependent Claim
127 words
The process for preparing an ink jet recording ink set according to claim 40 , which comprises adjusting the flowing characteristics at 20° C. of each of said plurality of ink compositions to satisfy the following formula (V): 0.8 ≤ log σ γ = 4 × 10 4 · - log σ γ = 3 × 10 4 · log ( 4 × 10 4 ) - log ( 3 × 10 4 ) ≤ 1 ( V ) wherein σ γ=3×10 4 : shear stress (Pa) when the shear rate of the ink is 3×10 4 (sec −1 ), and σ γ=4×10 4 : shear stress (Pa) when the shear rate of the ink is 4×10 4 (sec −1 ).
Claim 49
Dependent Claim
129 words
The process for preparing an ink jet recording ink set according to claim 40 , which comprises adjusting the flowing characteristics at 20° C. of each of said plurality of ink compositions to satisfy the following formula (VI): 0.9 ≤ log σ γ = 4 × 10 4 · - log σ γ = 3 × 10 4 · log ( 4 × 10 4 ) - log ( 3 × 10 4 ) ≤ 1 ( VI ) wherein σ γ=3×10 4 : shear stress (Pa) when the shear rate of the ink is 3×10 4 (sec −1 ), and σ γ=4×10 4 : shear stress (Pa) when the shear rate of the ink is 4×10 4 (sec −1 ).
Claim 50
Dependent Claim
121 words
A process for preparing an ink jet recording ink set comprising a plurality of ink compositions each containing at least a colorant, a water-soluble organic solvent and water, which comprises adjusting dynamic viscoelasticity at 20° C. of each of said plurality of ink compositions to satisfy the following expression (VII): 1.2 ≤ log G ω = 0.8 ′ - log G ω = 0.6 ′ log 0.8 - log 0.6 ≤ 2 ( VII ) wherein G′ ω= 0.6: storage shear modulus (Pa) when frequency (ω) applied to the ink composition is 0.6 rad/s, and, G′ ω= 0.8: storage shear modulus (Pa) when frequency (ω) applied to the ink composition is 0.8 rad/s.
Claim 51
Dependent Claim
121 words
A process for preparing an ink jet recording ink set comprising a plurality of ink compositions each containing at least a colorant, a water-soluble organic solvent and water, which comprises adjusting dynamic viscoelasticity at 20° C. of each of said plurality of ink compositions to satisfy the following expression (VII): 1.2 ≤ log G ω = 0.8 ′ - log G ω = 0.6 ′ log 0.8 - log 0.6 ≤ 2 ( VII ) wherein G′ ω= 0.6: storage shear modulus (Pa) when frequency (ω) applied to the ink composition is 0.6 rad/s, and, G′ ω= 0.8: storage shear modulus (Pa) when frequency (ω) applied to the ink composition is 0.8 rad/s.
Claim 52
Dependent Claim
109 words
The process for preparing an ink jet recording ink set according to claim 43 , which comprises adjusting the dynamic viscoelasticity at 20° C. of each of said plurality of ink compositions to satisfy the following expression (VIII): 1.6 ≤ log G ω = 0.8 ′ - log G ω = 0.6 ′ log 0.8 - log 0.6 ≤ 2 ( VIII ) wherein G′ ω= 0.6: storage shear modulus (Pa) when frequency (ω) applied to the ink composition is 0.6 rad/s, and, G′ ω= 0.8: storage shear modulus (Pa) when frequency (ω) applied to the ink composition is 0.8 rad/s.
Claim 53
Dependent Claim
109 words
The process for preparing an ink jet recording ink set according to claim 43 , which comprises adjusting the dynamic viscoelasticity at 20° C. of each of said plurality of ink compositions to satisfy the following expression (IX): 1.8 ≤ log G ω = 0.8 ′ - log G ω = 0.6 ′ log 0.8 - log 0.6 ≤ 2 ( IX ) wherein G′ ω= 0.6: storage shear modulus (Pa) when frequency (ω) applied to the ink composition is 0.6 rad/s, and, G′ ω= 0.8: storage shear modulus (Pa) when frequency (ω) applied to the ink composition is 0.8 rad/s.
Claim 54
Dependent Claim
31 words
The ink jet recording ink set according to any one of claims 1 , 3 , 6 and 9 , wherein said plurality of ink compositions each contains polymer fine particles.
Claim 55
Dependent Claim
41 words
The ink jet recording ink set according to claim 46 wherein said polymer fine particles are fine particles having a film forming property, having on the surface thereof a hydrophilic group and having a particle size of 50 to 200 nm.
Claim 56
Dependent Claim
24 words
The ink jet recording ink set according to claim 47 , wherein said hydrophilic group is a sulfonic acid group or a salt thereof.
Claim 57
Dependent Claim
40 words
The ink jet recording ink set according to claim 46 , wherein said polymer fine particles have been added, in the form of a polymer emulsion having water as a continuous phase, to each of said plurality of ink compositions.
Claim 58
Dependent Claim
31 words
An image recording method, which comprises forming an image by using an ink jet recording ink set according to any one of claims 1 , 3 , 6 and 9 .
Claim 59
Dependent Claim
29 words
Recorded matter having an image formed thereon by using an ink jet recording ink set according to any one of claims 1 , 3 , 6 and 9 .
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