Patent US4037172A successfully refreshed from Google Patents.
Patent US6746114B2 successfully refreshed from Google Patents.
US6746114B2
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Ink set, process for forming colored portion and ink-jet recording apparatus
Assignee: Canon Inc
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Filing: 2002-05-03
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Granted: 2004-06-08
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Expires: 2022-05-03
Abstract
Abstract The invention provides an ink set, a process for forming a colored portion and an ink-jet recording apparatus which are used for obtaining higher-quality ink-jet recorded articles. The ink set includes an aqueous ink containing at least an ultrafinely particulate pigment as a coloring material and an aqueous liquid composition containing fine particles, dispersed therein and electrically charged at the surface in a polarity opposite to the ink.
Inventors
- 👤 Katsuhiko Takahashi
- 👤 Shinichi Tochihara
- 👤 Yutaka Kurabayashi
- 👤 Hiroshi Tomioka
- 👤 Masashi Ogasawara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:12
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/40; C09D11/54
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
45 words
An ink set comprising an aqueous ink containing at least an ultrafinely particulate pigment as a coloring material and an aqueous liquid composition containing fine particles dispersed therein and electrically charged at the surface in a polarity opposite to the ink, in a dispersed state.
Claim 2
Dependent Claim
45 words
An ink set comprising an aqueous ink containing at least an ultrafinely particulate pigment as a coloring material and an aqueous liquid composition containing fine particles dispersed therein and electrically charged at the surface in a polarity opposite to the ink, in a dispersed state.
Claim 3
Dependent Claim
54 words
The ink set according to claim 1 , wherein the fine particles in the liquid composition are so constituted that the coloring material is adsorbed on the surfaces of the fine particles while preventing the aggregation of the coloring material when the ink comes into contact with the liquid composition on a recording medium.
Claim 4
Dependent Claim
42 words
The ink set according to claim 1 , wherein the volume average particle diameter of the ultrafinely particulate pigment is at most 60 nm, and the 90% cumulative particle diameter of the volume particle diameter distribution thereof is at most 100 nm.
Claim 5
Dependent Claim
20 words
The ink set according to claim 1 , wherein the ultrafinely particulate pigment is a chromatic ultrafinely particulate organic pigment.
Claim 6
Dependent Claim
15 words
The ink set according to claim 1 , wherein the ink is an anionic ink.
Claim 7
Dependent Claim
29 words
The ink set according to claim 5 , wherein an anionic hydrophilic group is bonded directly or through another atomic group to the surface of the ultrafinely particulate pigment.
Claim 8
Dependent Claim
23 words
The ink set according to claim 5 , wherein the ultrafinely particulate pigment is dispersed by a dispersing agent having an anionic group.
Claim 9
Dependent Claim
21 words
The ink set according to claim 5 , wherein the zeta potential of the liquid composition is +5 to +90 mV.
Claim 10
Dependent Claim
25 words
The ink set according to claim 5 , wherein the liquid composition further contains an acid to adjust the pH thereof to 2 to 7.
Claim 11
Dependent Claim
15 words
The ink set according to claim 1 , wherein the ink is a cationic ink.
Claim 12
Dependent Claim
29 words
The ink set according to claim 10 , wherein a cationic hydrophilic group is bonded directly or through another atomic group to the surface of the ultrafinely particulate pigment.
Claim 13
Dependent Claim
23 words
The ink set according to claim 10 , wherein the ultrafinely particulate pigment is dispersed by a dispersing agent having a cationic group.
Claim 14
Dependent Claim
21 words
The ink set according to claim 10 , wherein the zeta potential of the liquid composition is −5 to −90 mV.
Claim 15
Dependent Claim
25 words
The ink set according to claim 10 , wherein the liquid composition further contains a base to adjust the pH thereof to 7 to 12.
Claim 16
Dependent Claim
22 words
The ink set according to claim 1 , wherein the ink and the liquid composition are suitable for use in ink-jet recording.
Claim 17
Dependent Claim
86 words
A process for forming a colored portion, comprising the steps of: (i) applying an anionic or cationic aqueous ink containing an ultrafinely particulate pigment as a coloring material to a recording medium; and (ii) applying an aqueous liquid composition containing fine particles dispersed therein and electrically charged at the surface in a polarity opposite to the ink, wherein the ink and the liquid composition are applied so as to come into contact with each other in a liquid state on the surface of the recording medium.
Claim 18
Dependent Claim
86 words
A process for forming a colored portion, comprising the steps of: (i) applying an anionic or cationic aqueous ink containing an ultrafinely particulate pigment as a coloring material to a recording medium; and (ii) applying an aqueous liquid composition containing fine particles dispersed therein and electrically charged at the surface in a polarity opposite to the ink, wherein the ink and the liquid composition are applied so as to come into contact with each other in a liquid state on the surface of the recording medium.
Claim 19
Dependent Claim
21 words
The forming process according to claim 16 , wherein the step (i) is performed after performing at least the step (ii).
Claim 20
Dependent Claim
21 words
The forming process according to claim 16 , wherein the step (ii) is performed after performing at least the step (i).
Claim 21
Dependent Claim
29 words
The forming process according to claim 17 , wherein the step (ii) is performed after performing at least the step (i), and the step (i) is then performed again.
Claim 22
Dependent Claim
43 words
The forming process according to claim 16 , wherein at least one of the step (i) and the step (ii) is performed by an ink-jet recording method of a system making use of ejection through an orifice in correspondence with a recording signal.
Claim 23
Dependent Claim
42 words
The forming process according to claim 20 , wherein the ink-jet recording method is a method in which thermal energy is caused to act in correspondence with a recording signal to eject the aqueous ink or the liquid composition through an orifice.
Claim 24
Dependent Claim
84 words
An ink-jet recording apparatus comprising a first recording unit equipped with a container part which contains an anionic or cationic aqueous ink containing an ultrafinely particulate pigment as a coloring material and an ink-jet head for ejecting the ink, and a second recording unit equipped with an aqueous liquid composition container part which contains a liquid composition containing fine particles dispersed therein and electrically charged at the surface in a polarity opposite to the ink and an ink-jet head for ejecting the liquid composition.
Claim 25
Dependent Claim
84 words
An ink-jet recording apparatus comprising a first recording unit equipped with a container part which contains an anionic or cationic aqueous ink containing an ultrafinely particulate pigment as a coloring material and an ink-jet head for ejecting the ink, and a second recording unit equipped with an aqueous liquid composition container part which contains a liquid composition containing fine particles dispersed therein and electrically charged at the surface in a polarity opposite to the ink and an ink-jet head for ejecting the liquid composition.
Claim 26
Dependent Claim
79 words
An ink-jet recording apparatus comprising an ink container part which contains an anionic or cationic aqueous ink containing an ultrafinely particulate pigment as a coloring material, a liquid composition container part which contains an aqueous liquid composition containing fine particles dispersed therein electrically charged at the surface in a polarity opposite to the ink and ink-jet heads for independently ejecting the ink contained in the ink container part and the liquid composition contained in the liquid composition container part.
Claim 27
Dependent Claim
79 words
An ink-jet recording apparatus comprising an ink container part which contains an anionic or cationic aqueous ink containing an ultrafinely particulate pigment as a coloring material, a liquid composition container part which contains an aqueous liquid composition containing fine particles dispersed therein electrically charged at the surface in a polarity opposite to the ink and ink-jet heads for independently ejecting the ink contained in the ink container part and the liquid composition contained in the liquid composition container part.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2007-06-08 | 2007-12-08 | 2008-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2011-06-08 | 2011-12-08 | 2012-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2015-06-08 | 2015-12-08 | 2016-06-08 | $7700.00 | Window Closed / Lapsed |