US6821328B2
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US
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Liquid composition, ink set, method of forming colored portion in recording medium and ink-jet recording apparatus
Assignee: Canon Inc
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Filing: 2002-05-02
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Granted: 2004-11-23
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Expires: 2022-05-02
Abstract
Abstract The present invention relates to a liquid composition for use in forming a colored portion by imparting it together with an ink containing a colorant to a recording medium. The liquid composition includes at least a solvent and fine particles reactive with the colorant, in which the fine particles in the liquid composition have an average particle diameter in a range of 30 to 200 nm, and a 10% cumulative value of scattering intensity of 10 nm or more and 90% cumulative value of scattering intensity of 300 nm or less, when measured by a dynamic light scattering method.
Inventors
- 👤 Hiroshi Tomioka
- 👤 Yutaka Kurabayashi
- 👤 Masao Kato
- 👤 Makiko Endo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:09
CPC Classifications
B; B41; B41M; B41M7/00; B41M7/0018; B41J; B41J2/00; B41J2/005; B41J2/01; C; C09; C09D; C09D11/00; C09D11/30; C09D11/38; C09D11/40; B41M5/00; B41M5/50; B41M5/52; B41M5/5218
Claims Analysis
Total Claims: 40
Claim 1
Independent Claim
95 words
A liquid composition for use in forming on a recording medium a colored portion together with an ink containing a colorant by imparting liquid composition to the recording medium, comprising at least a solvent and fine particles reactive with the colorant, wherein the fine particles in the liquid composition have an average particle diameter in a range of 30 to 200 nm when measured by a dynamic light scattering method, and a 10% cumulative value of scattering intensity is 10 nm or more, and 90% cumulative value of scattering intensity is 300 nm or less.
Claim 2
Dependent Claim
95 words
A liquid composition for use in forming on a recording medium a colored portion together with an ink containing a colorant by imparting liquid composition to the recording medium, comprising at least a solvent and fine particles reactive with the colorant, wherein the fine particles in the liquid composition have an average particle diameter in a range of 30 to 200 nm when measured by a dynamic light scattering method, and a 10% cumulative value of scattering intensity is 10 nm or more, and 90% cumulative value of scattering intensity is 300 nm or less.
Claim 3
Dependent Claim
60 words
The liquid composition according to claim 1 , wherein the fine particles in the liquid composition have an average particle diameter of from 50 to 120 nm when measured by a dynamic light scattering method, and a 10% cumulative value of scattering intensity is 20 nm or more, and 90% cumulative value of scattering intensity is 250 nm or less.
Claim 4
Dependent Claim
47 words
The liquid composition according to claim 1 , wherein the ink is an anionic or cationic aqueous ink and wherein the liquid composition is aqueous and contains fine particles whose surface is charged in an opposite polarity to that of the aqueous ink in a dispersed state.
Claim 5
Dependent Claim
33 words
The liquid composition according to claim 1 , wherein the fine particles adsorb the colorant in the ink on the surface thereof while preventing aggregation of the colorant in forming a colored portion.
Claim 6
Dependent Claim
39 words
The liquid composition according to claim 1 , wherein the fine particles have a function of adsorbing the colorant in the ink on the surface thereof while maintaining the colorant in a monomolecular state when forming a colored portion.
Claim 7
Dependent Claim
22 words
The liquid composition according to claim 1 , wherein the liquid composition has a zeta potential of from +5 to +90 mV.
Claim 8
Dependent Claim
26 words
The liquid composition according to claim 1 , wherein the liquid composition further contains an acid and the pH thereof is adjusted to 2 to 7.
Claim 9
Dependent Claim
23 words
The liquid composition according to claim 7 , wherein the acid has a primary dissociation constant pKa in water of 5 or less.
Claim 10
Dependent Claim
22 words
The liquid composition according to claim 1 , wherein the liquid composition has a zeta potential of from −5 to −90 mV.
Claim 11
Dependent Claim
26 words
The liquid composition according to claim 1 , wherein the liquid composition further contains a base and the pH thereof is adjusted to 7 to 12.
Claim 12
Dependent Claim
23 words
The liquid composition according to claim 10 , wherein the base has a primary dissociation constant pKb in water of 5 or less.
Claim 13
Dependent Claim
36 words
An ink set comprising at least an ink containing a colorant and a liquid composition containing fine particles reactive with the colorant independently, wherein the liquid composition is the liquid composition according to claim 1 .
Claim 14
Dependent Claim
47 words
The ink set according to claim 12 , wherein the ink is an anionic or cationic aqueous ink and the liquid composition is an aqueous liquid composition containing fine particles whose surface is charged in an opposite polarity to that of the ink in a dispersed state.
Claim 15
Dependent Claim
37 words
The ink set according to claim 12 , wherein the ink is at least one ink selected from the group consisting of yellow ink, magenta ink, cyan ink, black ink, red ink, blue ink and green ink.
Claim 16
Dependent Claim
20 words
The ink set according to claim 12 , containing yellow ink, magenta ink and cyan ink respectively as the ink.
Claim 17
Dependent Claim
22 words
The ink set according to claim 12 , containing yellow ink, magenta ink, cyan ink and black ink respectively as the ink.
Claim 18
Dependent Claim
28 words
The ink set according to claim 12 , wherein the ink is anionic and wherein the zeta potential of the liquid composition is from +5 to +90 mV.
Claim 19
Dependent Claim
31 words
The ink set according to claim 12 , wherein the ink is anionic, and wherein the liquid composition contains an acid and the pH thereof is adjusted to 2 to 7.
Claim 20
Dependent Claim
28 words
The ink set according to claim 18 , wherein the acid contained in the liquid composition has a primary dissociation constant pKa in water of 5 or less.
Claim 21
Dependent Claim
28 words
The ink set according to claim 12 , wherein the ink is cationic and wherein the zeta potential of the liquid composition is from −5 to −90 mV.
Claim 22
Dependent Claim
31 words
The ink set according to claim 12 , wherein the ink is cationic, and wherein the liquid composition contains a base and the pH thereof is adjusted to 7 to 12.
Claim 23
Dependent Claim
28 words
The ink set according to claim 21 , wherein the base contained in the liquid composition has a primary dissociation constant pKb in water of 5 or less.
Claim 24
Dependent Claim
21 words
The ink set according to claim 12 , wherein the ink is anionic and wherein the ink contains an anionic compound.
Claim 25
Dependent Claim
20 words
The ink set according to claim 23 , wherein the anionic compound comprises a water-soluble dye having an anionic group.
Claim 26
Dependent Claim
23 words
The ink set according to claim 23 , wherein the anionic compound comprises a pigment having an anionic group on the surface thereof.
Claim 27
Dependent Claim
24 words
The ink set according to claim 23 , wherein the ink contains a pigment and an anionic compound as a dispersant for the pigment.
Claim 28
Dependent Claim
21 words
The ink set according to claim 12 , wherein the ink is cationic and wherein the ink contains a cationic compound.
Claim 29
Dependent Claim
42 words
A method of forming a colored portion on a recording medium, comprising at least the steps of: (i) imparting an ink containing a colorant to the recording medium; and (ii) imparting the liquid composition according to claim 1 to the recording medium.
Claim 30
Dependent Claim
54 words
The method of forming a colored portion on a recording medium according to claim 28 , wherein the ink is an anionic or cationic aqueous ink and wherein the liquid composition is aqueous and contains fine particles whose surface is charged in an opposite polarity to that of the ink in a dispersed state.
Claim 31
Dependent Claim
24 words
The method of forming a colored portion on a recording medium according to claim 28 , wherein step (i) is performed after step (ii).
Claim 32
Dependent Claim
24 words
The method of forming a colored portion on a recording medium according to claim 28 , wherein step (ii) is performed after step (i).
Claim 33
Dependent Claim
31 words
The method of forming a colored portion on a recording medium according to claim 28 , wherein step (ii) is performed after step (i), and thereafter step (i) is performed again.
Claim 34
Dependent Claim
46 words
The method of forming a colored portion on a recording medium according to claim 28 , wherein the step (i) of imparting the ink to the recording medium is performed by an ink-jet recording method to eject the ink from orifices in accordance with recording signals.
Claim 35
Dependent Claim
36 words
The method of forming a colored portion on a recording medium according to claim 33 , wherein the ink-jet recording method is a method in which thermal energy is applied to the ink to eject it.
Claim 36
Dependent Claim
48 words
The method of forming a colored portion on a recording medium according to claim 28 , wherein the step (ii) of imparting the liquid composition to the recording medium is performed by an ink-jet recording method to eject the liquid composition from orifices in accordance with recording signals.
Claim 37
Dependent Claim
37 words
The method of forming a colored portion on a recording medium according to claim 35 , wherein the ink-jet recording method is a method in which thermal energy is applied to the liquid composition to eject it.
Claim 38
Dependent Claim
45 words
An ink-jet recording apparatus provided with an ink-container containing an ink comprising a colorant, a liquid composition-container containing a liquid composition, and an ink-jet head for ejecting the ink and the liquid composition respectively, wherein the liquid composition is that defined in claim 1 .
Claim 39
Dependent Claim
26 words
The ink-jet recording apparatus according to claim 37 , wherein the ink-jet head is a thermal ink-jet head that ejects a liquid by applying thermal energy.
Claim 40
Dependent Claim
68 words
A liquid composition according to claim 1 , wherein the fine particles adsorb or bind the colorant in the ink on the surface thereof when the liquid composition and the ink are brought into contact with each other on the recording medium in a liquid state, the colorant that is adsorbed or bound to the fine particles maintaining the same molecular state as the colorant in the ink.
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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) | 2007-11-23 | 2008-05-24 | 2008-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2011-11-23 | 2012-05-24 | 2012-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2015-11-23 | 2016-05-24 | 2016-11-23 | $7700.00 | Window Closed / Lapsed |