Ink containing tris-azo dye, ink-jet recording method and apparatus using the same
First Claim
1. An ink comprising water, a water-soluble organic solvent and a dye, wherein the dye comprises a dye of the following Formula, in which the number of sulfonic acid groups and the number of amino groups are each not less than 2, and the number of sulfonic acid groups is less than the number of amino groups:
- ##STR5## wherein Q1 is a substituted phenyl group, a substituted pyridyl group or a substituted naphthyl group, said substituted group being substituted with at least one of NH2 or SO3 M;
Q2 is a substituted p-phenylene group or a substituted 1,4-naphthylene group, said substituted group being substituted with at least one of CH3, OCH3, NHCOCH3, or SO3 M;
Q3 is a SO3 M-substituted or unsubstituted diaminopyridyl group or a diaminophenyl group substituted by COOM or SO3 M;
M is an alkali metal, ammonium or organic ammonium; and
n is 0 or 1.
1 Assignment
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Accused Products
Abstract
An ink composition that includes water, a water-soluble organic solvent and a dye. The dye is represented by the following Formula, in which the number of sulfonic acid groups and the number of amino groups are each not less than 2, and the number of sulfonic acid groups is less than that of amino groups: ##STR1## Q1 denotes a substituted phenyl group, pyridyl group or naphthyl group; Q2 denotes a substituted or unsubstituted p-phenylene group or 1,4-naphthylene group; Q3 is a SO3 M-substituted or unsubstituted diaminopyridyl group or a diaminophenyl group substituted by COOM or SO3 M; M denotes an alkaline metal, ammonium or organic ammonium; and n denotes 0 or 1.
34 Citations
16 Claims
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1. An ink comprising water, a water-soluble organic solvent and a dye, wherein the dye comprises a dye of the following Formula, in which the number of sulfonic acid groups and the number of amino groups are each not less than 2, and the number of sulfonic acid groups is less than the number of amino groups:
- ##STR5## wherein Q1 is a substituted phenyl group, a substituted pyridyl group or a substituted naphthyl group, said substituted group being substituted with at least one of NH2 or SO3 M;
Q2 is a substituted p-phenylene group or a substituted 1,4-naphthylene group, said substituted group being substituted with at least one of CH3, OCH3, NHCOCH3, or SO3 M;
Q3 is a SO3 M-substituted or unsubstituted diaminopyridyl group or a diaminophenyl group substituted by COOM or SO3 M;
M is an alkali metal, ammonium or organic ammonium; and
n is 0 or 1. - View Dependent Claims (2, 3)
- ##STR5## wherein Q1 is a substituted phenyl group, a substituted pyridyl group or a substituted naphthyl group, said substituted group being substituted with at least one of NH2 or SO3 M;
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4. An ink-jet recording method comprising the step of:
ejecting droplets of ink from an orifice in accordance with a recording signal to make a record on a recording medium, wherein said ink comprises water, a water-soluble organic solvent and a dye, wherein the dye comprises a dye of the following Formula, in which the number of sulfonic acid groups and the number of amino groups are each not less than 2, and the number of sulfonic acid groups is less than the number of amino groups;
##STR6## wherein Q1 is a substituted phenyl group, a substituted pyridyl group or a substituted naphthyl group, said substituted group being substituted with at least one of NH2 or SO3 M;
Q2 is a substituted p-phenylene group or a substituted 1,4-naphthylene group, said substituted group being substituted with at least one of CH3, OCH3, NHCOCH3, or SO3 M;
Q3 is a SO3 M-substituted or unsubstituted diaminopyridyl group or a diaminophenyl group substituted by COOM or SO3 M;
M is an alkali metal, ammonium or organic ammonium; and
n is 0 or 1.- View Dependent Claims (5)
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6. A recording unit comprising:
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(i) an ink container that holds an ink comprising water, a water-soluble organic solvent and a dye, wherein the dye comprises a dye of the following Formula, in which the number of sulfonic acid groups and the number of amino groups are each not less than 2, and the number of sulfonic acid groups is less than the number of amino groups;
##STR7## wherein Q1 is a substituted phenyl group, a substituted pyridyl group or a substituted naphthyl group, said substituted group being substituted with at least one of NH2 or SO3 M;
Q2 is a substituted p-phenylene group or a substituted 1,4-naphthylene group, said substituted group being substituted with at least one of CH3, OCH3, NHCOCH3, or SO3 M;
Q3 is a SO3 M-substituted or unsubstituted diaminopyridyl group or a diaminophenyl group substituted by COOM or SO3 M;
M is an alkali metal, ammonium or organic ammonium; and
n is 0 or 1; and(ii) a head from which the ink is ejected in the form of ink droplets. - View Dependent Claims (7, 8)
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9. An ink cartridge comprising an ink container portion that holds an ink comprising water, a water-soluble organic solvent and a dye, wherein the dye comprises a dye of the following Formula, in which the number of sulfonic acid groups and the number of amino groups are each not less than 2, and the number of sulfonic acid groups is less than the number of amino groups:
- ##STR8## wherein Q1 is a substituted phenyl group, a substituted pyridyl group or a substituted naphthyl group, said substituted group being substituted with at least one of NH2 or SO3 M;
Q2 is a substituted p-phenylene group or a substituted 1,4-naphthylene group, said substituted group being substituted with at least one of CH3, OCH3, NHCOCH3, or SO3 M;
Q3 is a SO3 M-substituted or unsubstituted diaminopyridyl group or a diaminophenyl group substituted by COOM or SO3 M;
M is an alkali metal, ammonium or organic ammonium; and
n is 0 or 1. - View Dependent Claims (10)
- ##STR8## wherein Q1 is a substituted phenyl group, a substituted pyridyl group or a substituted naphthyl group, said substituted group being substituted with at least one of NH2 or SO3 M;
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11. An ink-jet recording apparatus comprising a recording unit having:
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(i) an ink container portion that holds an ink comprising water, a water-soluble organic solvent and a dye, wherein the dye comprises a dye of the following Formula, in which the number of sulfonic acid groups and the number of amino groups are each not less than 2, and the number of sulfonic acid groups is less than the number of amino groups;
##STR9## wherein Q1 is a substituted phenyl group, a substituted pyridyl group or a substituted naphthyl group, said substituted group being substituted with at least one of NH2 or SO3 M;
Q2 is a substituted p-phenylene group or a substituted 1,4-naphthylene group, said substituted group being substituted with at least one of CH3, OCH3, NHCOCH3, or SO3 M;
Q3 is a SO3 M-substituted or unsubstituted diaminopyridyl group or a diaminophenyl group substituted by COOM or SO3 M;
M is an alkali metal, ammonium or organic ammonium; and
n is 0 or 1; and(ii) a head from which the ink is ejected in the form of ink droplets. - View Dependent Claims (12, 13)
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14. An ink-jet recording apparatus comprising:
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a recording head from which ink droplets are ejected; an ink cartridge having an ink container portion that holds an ink comprising water, a water-soluble organic solvent and a dye, wherein the dye comprises a dye of the following Formula, in which the number of sulfonic acid groups and the number of amino groups are each not less than 2, and the number of sulfonic acid groups is less than the number of amino groups;
##STR10## wherein Q1 is a substituted phenyl group, a substituted pyridyl group or a substituted naphthyl group, said substituted group being substituted with at least one of NH2 or SO3 M;
Q2 is a substituted p-phenylene group or a substituted 1,4-naphthylene group, said substituted group being substituted with at least one of CH3, OCH3, NHCOCH3, or SO3 M;
Q3 is a SO3 M-substituted or unsubstituted diaminopyridyl group or a diaminophenyl group substituted by COOM or SO3 M;
M is an alkali metal, ammonium or organic ammonium; and
n is 0 or 1; andan ink supplying portion which supplies ink from the ink cartridge to the recording head. - View Dependent Claims (15, 16)
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Specification