Claims Analysis
Total Claims: 43
Claim 1
Independent Claim
90 words
An ink comprising at least one salt selected from the group consisting of (M 1 ) 2 SO 4 , CH 3 COO(M 1 ), Ph-COO(M), (M 1 )NO 3 , (M 1 )Cl, (M 1 )Br, (M 1 )I, (M 1 ) 2 SO 2 and (M 1 ) 2 CO 3 , wherein M 1 represents an alkali metal, ammonium or organic ammonium, and Ph represents a phenyl group, and self-dispersing anionic carbon black having a functional-group density of at least 1.8 (μmol/m 2 ) on its surface.
Claim 2
Dependent Claim
90 words
An ink comprising at least one salt selected from the group consisting of (M 1 ) 2 SO 4 , CH 3 COO(M 1 ), Ph-COO(M), (M 1 )NO 3 , (M 1 )Cl, (M 1 )Br, (M 1 )I, (M 1 ) 2 SO 2 and (M 1 ) 2 CO 3 , wherein M 1 represents an alkali metal, ammonium or organic ammonium, and Ph represents a phenyl group, and self-dispersing anionic carbon black having a functional-group density of at least 1.8 (μmol/m 2 ) on its surface.
Claim 3
Dependent Claim
29 words
The ink according to claim 1 , wherein the salt is contained in a proportion of 0.05 to 10% by weight based on the total weight of the ink.
Claim 4
Dependent Claim
29 words
The ink according to claim 2 , wherein the salt is contained in a proportion of 0.1 to 5% by weight based on the total weight of the ink.
Claim 5
Dependent Claim
30 words
The ink according to claim 1 , wherein the self-dispersing anionic carbon black has at least one hydrophilic group bonded directly or through another atomic group to the surface thereof.
Claim 6
Dependent Claim
55 words
The ink according to claim 4 , wherein the hydrophilic group is selected from the group consisting of —COO(M 2 ), —SO 2 (M 2 ) 2 , —PO 3 H(M 2 ) and —PO 3 (M 2 ) 2 , wherein M 2 is a hydrogen atom, an alkali metal, ammonium or organic ammonium.
Claim 7
Dependent Claim
35 words
The ink according to claim 4 , wherein said another atomic group is an alkylene group having 1 to 12 carbon atoms, a substituted or unsubstituted phenylene group, or a substituted or unsubstituted naphthylene group.
Claim 8
Dependent Claim
57 words
The ink according to claim 4 , wherein the hydrophilic group is selected from the group consisting of —COO(M 2 ), —SO 3 (M 2 ) 2 and —PO 3 (M 2 ) 2 , and M 2 in the above formulae is identical with M 1 in the formulae representing the salt in claim 1 .
Claim 9
Dependent Claim
113 words
An ink comprising at least one salt selected from the group consisting of (M 1 ) 2 SO 4 , CH 3 COO(M 1 ), Ph-COO(M 1 ), (M 1 )NO 3 , (M 1 )Cl, (M 1 )Br, (M 1 )I, (M 1 ) 2 SO 3 and (M 1 ) 2 CO 3 , wherein M 1 represents an alkali metal, ammonium or organic ammonium, and Ph represents a phenyl group, and a self-dispersing anionic carbon black having a functional-group density of at least 0.45 (mmol/g) on its surface, the ink undergoing no substantial change in viscosity even when it is stored for one month in an environment of 60° C.
Claim 10
Dependent Claim
113 words
An ink comprising at least one salt selected from the group consisting of (M 1 ) 2 SO 4 , CH 3 COO(M 1 ), Ph-COO(M 1 ), (M 1 )NO 3 , (M 1 )Cl, (M 1 )Br, (M 1 )I, (M 1 ) 2 SO 3 and (M 1 ) 2 CO 3 , wherein M 1 represents an alkali metal, ammonium or organic ammonium, and Ph represents a phenyl group, and a self-dispersing anionic carbon black having a functional-group density of at least 0.45 (mmol/g) on its surface, the ink undergoing no substantial change in viscosity even when it is stored for one month in an environment of 60° C.
Claim 11
Dependent Claim
25 words
The ink according to claim 1 or 8 , wherein the self-dispersing anionic carbon black has an average particle diameter of at least 90 nm.
Claim 12
Dependent Claim
17 words
The ink according to claim 1 or 8 , wherein the ink is an ink for ink-jet.
Claim 13
Dependent Claim
40 words
An ink set comprising in combination the black ink according to claim 1 or 8 , and a water-based color ink comprising at least one coloring material selected from among coloring materials for cyan, magenta, yellow, red, green and blue.
Claim 14
Dependent Claim
24 words
The ink set according to claim 11 , wherein the coloring material for the color ink Is an acid dye or a direct dye.
Claim 15
Dependent Claim
19 words
The ink set according to claim 11 , wherein the coloring material for the color ink is a pigment.
Claim 16
Dependent Claim
13 words
The ink set according to claim 11 , which is used for ink-jet.
Claim 17
Dependent Claim
18 words
An ink cartridge, comprising an ink tank which contains the ink according to claim 1 or 8 .
Claim 18
Dependent Claim
113 words
A recording unit comprising an ink container portion containing an ink-jet ink and a head portion for ejecting the ink, the ink comprising at least one salt selected from the group consisting of (M 1 ) 2 SO 4 , CH 3 COO(M 1 ), Ph-COO(M 1 ), (M 1 )NO 3 , (M 1 )Cl, (M 1 )Br, (M 1 )I, (M 1 ) 2 SO 3 and (M 1 ) 2 CO 3 , wherein M 1 represents an alkali metal, ammonium or organic ammonium, and Ph represents a phenyl group, and a self-dispersing anionic carbon black having a functional-group density of at least 1.08 (μmol/m 2 ) on its surface.
Claim 19
Dependent Claim
113 words
A recording unit comprising an ink container portion containing an ink-jet ink and a head portion for ejecting the ink, the ink comprising at least one salt selected from the group consisting of (M 1 ) 2 SO 4 , CH 3 COO(M 1 ), Ph-COO(M 1 ), (M 1 )NO 3 , (M 1 )Cl, (M 1 )Br, (M 1 )I, (M 1 ) 2 SO 3 and (M 1 ) 2 CO 3 , wherein M 1 represents an alkali metal, ammonium or organic ammonium, and Ph represents a phenyl group, and a self-dispersing anionic carbon black having a functional-group density of at least 1.08 (μmol/m 2 ) on its surface.
Claim 20
Dependent Claim
133 words
A recording unit comprising an ink container portion containing an ink-jet ink and a head portion for ejecting the ink, the ink comprising at least one salt selected from the group consisting of (M 1 ) 2 SO 4 , CH 3 COO(M 1 ), Ph-COO(M 1 ), (M 1 )NO 3 , (M 1 )Cl, (M 1 )Br, (M 1 )I, (M 1 ) 2 SO 3 and (M 1 ) 2 CO 3 , wherein M 1 represents an alkali metal, ammonium or organic ammonium, and Ph represents a phenyl group, and a self-dispersing anionic carbon black having a functional-group density of at least 0.45 (mmol/g) on its surface, the ink undergoing no substantial change In viscosity even when it is stored for one month in an environment of 60° C.
Claim 21
Dependent Claim
133 words
A recording unit comprising an ink container portion containing an ink-jet ink and a head portion for ejecting the ink, the ink comprising at least one salt selected from the group consisting of (M 1 ) 2 SO 4 , CH 3 COO(M 1 ), Ph-COO(M 1 ), (M 1 )NO 3 , (M 1 )Cl, (M 1 )Br, (M 1 )I, (M 1 ) 2 SO 3 and (M 1 ) 2 CO 3 , wherein M 1 represents an alkali metal, ammonium or organic ammonium, and Ph represents a phenyl group, and a self-dispersing anionic carbon black having a functional-group density of at least 0.45 (mmol/g) on its surface, the ink undergoing no substantial change In viscosity even when it is stored for one month in an environment of 60° C.
Claim 22
Dependent Claim
112 words
An image recording apparatus comprising an ink container portion containing an ink-jet ink and a recording head for ejecting the ink, the ink comprising at least one salt selected from the group consisting of (M 1 ) 2 SO 4 , CH 3 COO(M 1 ), Ph-COO(M 1 ), (M 1 )NO 3 , (M 1 )Cl, (M 1 )Br, (M 1 )I, (M 1 ) 2 SO 3 and (M 1 ) CO 31 wherein M 1 represents an alkali metal, ammonium or organic ammonium, and Ph represents a phenyl group, and a self-dispersing anionic carbon black having a functional-group density of at least 1.8 (μmol/m 2 ) on its surface.
Claim 23
Dependent Claim
112 words
An image recording apparatus comprising an ink container portion containing an ink-jet ink and a recording head for ejecting the ink, the ink comprising at least one salt selected from the group consisting of (M 1 ) 2 SO 4 , CH 3 COO(M 1 ), Ph-COO(M 1 ), (M 1 )NO 3 , (M 1 )Cl, (M 1 )Br, (M 1 )I, (M 1 ) 2 SO 3 and (M 1 ) CO 31 wherein M 1 represents an alkali metal, ammonium or organic ammonium, and Ph represents a phenyl group, and a self-dispersing anionic carbon black having a functional-group density of at least 1.8 (μmol/m 2 ) on its surface.
Claim 24
Dependent Claim
131 words
An image recording apparatus comprising an ink container portion containing an ink-jet ink and a recording head for ejecting the ink, the ink comprising at least one-salt selected from the group consisting of (M 1 ) 2 SO 4 , CH 3 COO(M 1 ), Ph-COO(M 1 ), (ML)NO 3 , (M 1 )Cl, (M 1 )Br, (M 1 )I, (M 1 ) 2 SO 3 and (M 1 ) 2 CO 3 , wherein M 1 represents an alkali metal, ammonium or organic ammonium, and Ph represents a phenyl group, and a self-dispersing anionic carbon black having a functional-group density of at least 0.45 (mmol/g) on its surface, the ink undergoing no substantial change in viscosity even when it is stored for one month in an environment of 60° C.
Claim 25
Dependent Claim
131 words
An image recording apparatus comprising an ink container portion containing an ink-jet ink and a recording head for ejecting the ink, the ink comprising at least one-salt selected from the group consisting of (M 1 ) 2 SO 4 , CH 3 COO(M 1 ), Ph-COO(M 1 ), (ML)NO 3 , (M 1 )Cl, (M 1 )Br, (M 1 )I, (M 1 ) 2 SO 3 and (M 1 ) 2 CO 3 , wherein M 1 represents an alkali metal, ammonium or organic ammonium, and Ph represents a phenyl group, and a self-dispersing anionic carbon black having a functional-group density of at least 0.45 (mmol/g) on its surface, the ink undergoing no substantial change in viscosity even when it is stored for one month in an environment of 60° C.
Claim 26
Dependent Claim
148 words
A color-image recording apparatus comprising an ink container portion containing an ink-jet ink comprising at least one salt selected from the group consisting of (M 1 ) 2 SO 4 , CH 3 COO(M 1 ), Ph-COO(M 1 ), (M 1 )NO 3 , (M 1 )Cl, (M 1 )Br, (M 1 )I, (M 1 ) 2 SO 3 and (M 1 ) 2 CO 3 , wherein M 1 represents an alkali metal, ammonium or organic ammonium, and Ph represents a phenyl group, and a self-dispersing anionic carbon black having a functional-group density of at least 1.8 (μmol/m 2 ) on its surface, another ink container portion containing a water-based color ink comprising at least one coloring material selected from among coloring materials for cyan, magenta, yellow, red, green and blue, and recording head portions for respectively ejecting the inks contained in the respective ink container portions.
Claim 27
Dependent Claim
148 words
A color-image recording apparatus comprising an ink container portion containing an ink-jet ink comprising at least one salt selected from the group consisting of (M 1 ) 2 SO 4 , CH 3 COO(M 1 ), Ph-COO(M 1 ), (M 1 )NO 3 , (M 1 )Cl, (M 1 )Br, (M 1 )I, (M 1 ) 2 SO 3 and (M 1 ) 2 CO 3 , wherein M 1 represents an alkali metal, ammonium or organic ammonium, and Ph represents a phenyl group, and a self-dispersing anionic carbon black having a functional-group density of at least 1.8 (μmol/m 2 ) on its surface, another ink container portion containing a water-based color ink comprising at least one coloring material selected from among coloring materials for cyan, magenta, yellow, red, green and blue, and recording head portions for respectively ejecting the inks contained in the respective ink container portions.
Claim 28
Dependent Claim
169 words
A color-image recording apparatus comprising an ink container portion containing an ink-jet ink comprising at least one salt selected from the group consisting of (M 1 I) 2 SO 4 , CH 3 COO(M 1 ), Ph-COO(M 1 ), (M 1 )NO 3 , (M 1 )Cl, (M 1 )Br, (M 1 )I, (M 1 ) 2 SO 3 and (M 1 ) 1 CO 3 , wherein M 1 represents an alkali metal, ammonium or organic ammonium, and Ph represents a phenyl group, and a self-dispersing anionic carbon black having a functional-group density of at least 0.45 (mmol/g) on its surface, the ink undergoing no substantial change in viscosity even when it is stored for one month In an environment of 60° C., another ink container portion containing a water-based, ink-jet color ink comprising at least one coloring material selected from among coloring materials for cyan, magenta, yellow, red, green and blue, and recording head portions for respectively ejecting the inks contained in the respective Ink container portions.
Claim 29
Dependent Claim
169 words
A color-image recording apparatus comprising an ink container portion containing an ink-jet ink comprising at least one salt selected from the group consisting of (M 1 I) 2 SO 4 , CH 3 COO(M 1 ), Ph-COO(M 1 ), (M 1 )NO 3 , (M 1 )Cl, (M 1 )Br, (M 1 )I, (M 1 ) 2 SO 3 and (M 1 ) 1 CO 3 , wherein M 1 represents an alkali metal, ammonium or organic ammonium, and Ph represents a phenyl group, and a self-dispersing anionic carbon black having a functional-group density of at least 0.45 (mmol/g) on its surface, the ink undergoing no substantial change in viscosity even when it is stored for one month In an environment of 60° C., another ink container portion containing a water-based, ink-jet color ink comprising at least one coloring material selected from among coloring materials for cyan, magenta, yellow, red, green and blue, and recording head portions for respectively ejecting the inks contained in the respective Ink container portions.
Claim 30
Dependent Claim
125 words
An image recording process comprising the step of ejecting an ink-jet ink toward the surface of a recording medium to apply the ink to the surface thereof, thereby recording an image, wherein the ink comprises at least one salt selected from the group consisting of (M 1 ) 2 SO 4 , CH 3 COO(M 1 ), Ph-COO(M 1 ), (M 1 )NO 3 , (M 1 )Cl, (M 1 )Br, (M 1 )I, (M 1 ) 2 SO 3 and (M 1 ) 2 CO 3 , wherein M 1 represents an alkali metal, ammonium or organic ammonium, and Ph represents a phenyl group, and a self-dispersing anionic carbon black having a functional-group density of at least 1.8 (μmol/m 2 ) on its surface.
Claim 31
Dependent Claim
125 words
An image recording process comprising the step of ejecting an ink-jet ink toward the surface of a recording medium to apply the ink to the surface thereof, thereby recording an image, wherein the ink comprises at least one salt selected from the group consisting of (M 1 ) 2 SO 4 , CH 3 COO(M 1 ), Ph-COO(M 1 ), (M 1 )NO 3 , (M 1 )Cl, (M 1 )Br, (M 1 )I, (M 1 ) 2 SO 3 and (M 1 ) 2 CO 3 , wherein M 1 represents an alkali metal, ammonium or organic ammonium, and Ph represents a phenyl group, and a self-dispersing anionic carbon black having a functional-group density of at least 1.8 (μmol/m 2 ) on its surface.
Claim 32
Dependent Claim
143 words
An image recording process comprising the step of ejecting an ink toward the surface of a recording medium to apply the ink to the surface thereof, thereby recording an image, wherein the ink comprises at least one salt selected from the group consisting of (M 1 ) 2 SO 4 , CH 3 COO(M 1 ), Ph-COO(M 1 ), (M 1 )NO 3 , (M 1 )Cl, (M 1 )Br, (M 1 )I, (M 1 ) 2 SO 3 and (M 1 ) 2 CO 3 , wherein M 1 represents an alkali metal, ammonium or organic ammonium, and Ph represents a phenyl group, and self-dispersing anionic carbon black having a functional-group density of at least 0.45 (mmol/g) on its surface, the ink undergoing no substantial change in viscosity even when it is stored for one month in an environment of 60° C.
Claim 33
Dependent Claim
143 words
An image recording process comprising the step of ejecting an ink toward the surface of a recording medium to apply the ink to the surface thereof, thereby recording an image, wherein the ink comprises at least one salt selected from the group consisting of (M 1 ) 2 SO 4 , CH 3 COO(M 1 ), Ph-COO(M 1 ), (M 1 )NO 3 , (M 1 )Cl, (M 1 )Br, (M 1 )I, (M 1 ) 2 SO 3 and (M 1 ) 2 CO 3 , wherein M 1 represents an alkali metal, ammonium or organic ammonium, and Ph represents a phenyl group, and self-dispersing anionic carbon black having a functional-group density of at least 0.45 (mmol/g) on its surface, the ink undergoing no substantial change in viscosity even when it is stored for one month in an environment of 60° C.
Claim 34
Dependent Claim
21 words
The image recording process according to claim 22 or 23 , wherein the energy for ejecting the ink is thermal energy.
Claim 35
Dependent Claim
21 words
The image recording process according to claim 22 or 23 , wherein the energy for ejecting the ink is mechanical energy.
Claim 36
Dependent Claim
164 words
A process for forming a color image comprising the steps of ejecting a first water-based, ink-jet ink comprising at least one coloring material selected from among coloring materials for cyan, magenta, yellow, red, green and blue toward the surface of a recording medium to apply the ink to the surface thereof; and ejecting a second ink-jet ink comprising at least one salt selected from the group consisting of (M 1 ) 2 SO 4 , CH 3 COO(M 1 ), Ph-COO(M 1 ), (M 1 )NO 3 , (M 1 )Cl, (M 1 )Br, (M 1 )I, (M 1 ) 2 SO 3 and (M 1 ) 2 CO 3 , wherein M 1 represents an alkali metal, ammonium or organic ammonium, and Ph represents a phenyl group, and a self-dispersing anionic carbon black having a functional-group density of at least 1.8 (μmol/m 2 ) on its surface toward the surface of the recording medium to apply the second ink to the surface thereof.
Claim 37
Dependent Claim
164 words
A process for forming a color image comprising the steps of ejecting a first water-based, ink-jet ink comprising at least one coloring material selected from among coloring materials for cyan, magenta, yellow, red, green and blue toward the surface of a recording medium to apply the ink to the surface thereof; and ejecting a second ink-jet ink comprising at least one salt selected from the group consisting of (M 1 ) 2 SO 4 , CH 3 COO(M 1 ), Ph-COO(M 1 ), (M 1 )NO 3 , (M 1 )Cl, (M 1 )Br, (M 1 )I, (M 1 ) 2 SO 3 and (M 1 ) 2 CO 3 , wherein M 1 represents an alkali metal, ammonium or organic ammonium, and Ph represents a phenyl group, and a self-dispersing anionic carbon black having a functional-group density of at least 1.8 (μmol/m 2 ) on its surface toward the surface of the recording medium to apply the second ink to the surface thereof.
Claim 38
Dependent Claim
188 words
A process for forming a color image comprising the steps of ejecting a first water-based, ink-jet ink comprising at least one coloring material selected from among coloring materials for cyan, magenta, yellow, red, green and blue toward the surface of a recording medium to apply the ink to the surface thereof; and ejecting a second ink-jet ink toward the surface of the recording medium to apply the second ink to the surface second ink-jet ink comprising at least one salt selected from the group consisting of (M 1 ) 2 SO 4 , CH 3 COO(M 1 ), Ph-COO(M 1 ), (M 1 )NO 3 , (M 1 )Cl, (M 1 )Br, (M 1 )I, (M 1 ) 2 SO 3 and (M 1 ) 2 CO 3 , wherein M 1 represents an alkali metal, ammonium or organic ammonium, and Ph represents a phenyl group, and a self-dispersing anionic carbon black having a functional-group density of at least 0.45 (mmol/g) on its surface, the second ink-jet ink undergoing no substantial change in viscosity even when it is stored for one month In an environment of 60° C.
Claim 39
Dependent Claim
188 words
A process for forming a color image comprising the steps of ejecting a first water-based, ink-jet ink comprising at least one coloring material selected from among coloring materials for cyan, magenta, yellow, red, green and blue toward the surface of a recording medium to apply the ink to the surface thereof; and ejecting a second ink-jet ink toward the surface of the recording medium to apply the second ink to the surface second ink-jet ink comprising at least one salt selected from the group consisting of (M 1 ) 2 SO 4 , CH 3 COO(M 1 ), Ph-COO(M 1 ), (M 1 )NO 3 , (M 1 )Cl, (M 1 )Br, (M 1 )I, (M 1 ) 2 SO 3 and (M 1 ) 2 CO 3 , wherein M 1 represents an alkali metal, ammonium or organic ammonium, and Ph represents a phenyl group, and a self-dispersing anionic carbon black having a functional-group density of at least 0.45 (mmol/g) on its surface, the second ink-jet ink undergoing no substantial change in viscosity even when it is stored for one month In an environment of 60° C.
Claim 40
Dependent Claim
77 words
A water-based ink-jet ink comprising a self-dispersing carbon black having an average particle diameter of at least 90 nm and being stably dispersed in an aqueous medium, and a salt, wherein the carbon black has a surface functional-group density of at least 1.8 μmol/m 2 and gives an optical density of an image obtained by the ink, the optical density being decreased if the salt is not present, and the salt alleviates the decrease in optical density.
Claim 41
Dependent Claim
77 words
A water-based ink-jet ink comprising a self-dispersing carbon black having an average particle diameter of at least 90 nm and being stably dispersed in an aqueous medium, and a salt, wherein the carbon black has a surface functional-group density of at least 1.8 μmol/m 2 and gives an optical density of an image obtained by the ink, the optical density being decreased if the salt is not present, and the salt alleviates the decrease in optical density.
Claim 42
Independent Claim
100 words
A method for improving the optical density of an ink-jet recorded image formed with an ink comprising a self-dispersing carbon black having an average particle diameter of at least 90 nm and a surface functional-group density of at least 1.8 μmol/m 2 and being stably dispersed in an aqueous medium, the method comprising causing a salt to be contained in the ink as an agent for inhibiting penetration of the self-dispersing carbon black into the interior of a recording medium, the optical density being decreased if the salt is not present, and the salt alleviates the decrease in optical density.
Claim 43
Independent Claim
100 words
A method for improving the optical density of an ink-jet recorded image formed with an ink comprising a self-dispersing carbon black having an average particle diameter of at least 90 nm and a surface functional-group density of at least 1.8 μmol/m 2 and being stably dispersed in an aqueous medium, the method comprising causing a salt to be contained in the ink as an agent for inhibiting penetration of the self-dispersing carbon black into the interior of a recording medium, the optical density being decreased if the salt is not present, and the salt alleviates the decrease in optical density.