US6863391B2
Expired / Lapsed
US
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Liquid composition, ink set, method of forming a colored section on recording medium and ink-jet recording apparatus
Assignee: Canon Inc
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Filing: 2002-05-06
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Granted: 2005-03-08
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Expires: 2022-05-06
Abstract
Abstract This invention relates to a liquid composition adapted to be applied to a recording medium with ink containing a multi-color to form a colored section on the recording medium. The liquid composition contains fine particles reactive relative to the solvent and the coloring material in ink. When processed in particular steps, it produces aggregates of fine particles showing a specific surface area between 70 and 250 m 2 /g as determined by the BET nitrogen adsorption/desorption method.
Inventors
- 👤 Hiroshi Tomioka
- 👤 Masao Kato
- 👤 Makiko Endo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:39
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/54; B; B41; B41M; B41M7/00; B41M7/0018; C09D11/30; C09D11/40; B41M5/00; B41M5/50; B41M5/52; B41M5/5218
Claims Analysis
Total Claims: 42
Claim 1
Independent Claim
181 words
A liquid composition to be applied to a recording medium with ink containing a coloring material to form a colored section on the recording medium, said liquid composition containing at least a solvent and fine particles reactive to said coloring material, the specific surface area of aggregates of fine particles formed from the liquid composition by way of steps (1) through (4) listed below being 70 to 250 m 2 /g as determined by the BET nitrogen adsorption/desorption method, (1) a step of drying the liquid composition at 120° C. for 10 hours in the atmosphere to evaporate the solvent; (2) a step of raising the temperature of said dried product resulting from the step (1) from 120° C. to 700° C. in an hour and baking it at 700° C for 3 hours; (3) a step of gradually cooling the baked product resulting from the step (2) to room temperature and pulverizing it; and (4) a step of deaerating the powder obtained in the step (3) by vacuum at 120° C. for 8 hours to obtain aggregates of fine particles.
Claim 2
Dependent Claim
181 words
A liquid composition to be applied to a recording medium with ink containing a coloring material to form a colored section on the recording medium, said liquid composition containing at least a solvent and fine particles reactive to said coloring material, the specific surface area of aggregates of fine particles formed from the liquid composition by way of steps (1) through (4) listed below being 70 to 250 m 2 /g as determined by the BET nitrogen adsorption/desorption method, (1) a step of drying the liquid composition at 120° C. for 10 hours in the atmosphere to evaporate the solvent; (2) a step of raising the temperature of said dried product resulting from the step (1) from 120° C. to 700° C. in an hour and baking it at 700° C for 3 hours; (3) a step of gradually cooling the baked product resulting from the step (2) to room temperature and pulverizing it; and (4) a step of deaerating the powder obtained in the step (3) by vacuum at 120° C. for 8 hours to obtain aggregates of fine particles.
Claim 3
Dependent Claim
47 words
A liquid composition according to claim 1 , wherein said ink is anionic or cationic aqueous ink and said liquid composition is aqueous and contains fine particles in a dispersed state, the particles' surfaces being electrically charged to the polarity opposite to that of said aqueous ink.
Claim 4
Dependent Claim
38 words
A liquid composition according to claim 1 , wherein said fine particles are adapted to adsorb the coloring material in the ink to the surfaces thereof while preventing the coloring material from aggregating when forming a colored section.
Claim 5
Dependent Claim
18 words
A liquid composition according to claim 1 , wherein the zeta potential is between +5 and +90 mV.
Claim 6
Dependent Claim
20 words
A liquid composition according to claim 1 , further containing an acid, and having a pH of 2 to 7.
Claim 7
Dependent Claim
24 words
A liquid composition according to claim 5 , wherein the primary dissociation constant pKa of the acid in water is not more than 5.
Claim 8
Dependent Claim
18 words
A liquid composition according to claim 1 , wherein the zeta potential is between −5 and −90 mV.
Claim 9
Dependent Claim
20 words
A liquid composition according to claim 1 , further containing a base, and having a pH of 7 to 12.
Claim 10
Dependent Claim
24 words
A liquid composition according to claim 8 , wherein the primary dissociation constant pKb of the base in water is not more than 5.
Claim 11
Dependent Claim
27 words
A liquid composition according to claim 1 , wherein the average particle diameter of the fine particles is within a range of from 0.005 to 1 μm.
Claim 12
Dependent Claim
29 words
A liquid composition according to claim 1 , wherein the specific surface area of the fine particles is found within a range between 70 and 300 m 2 /g.
Claim 13
Dependent Claim
19 words
An ink set comprising an ink containing a coloring material and the liquid composition according to claim 1 respectively.
Claim 14
Dependent Claim
47 words
An ink set according to claim 12 , wherein said ink is anionic or cationic aqueous ink and said liquid composition is aqueous and contains fine particles electrically charged to the polarity opposite to that of said aqueous ink on the surfaces thereof in a dispersed state.
Claim 15
Dependent Claim
37 words
An ink set according to claim 12 , wherein said ink is at least an ink selected from a group consisting of yellow ink, magenta ink, cyan ink, black ink, red ink, blue ink and green ink.
Claim 16
Dependent Claim
20 words
An ink set according to claim 12 , comprising yellow ink, magenta ink and cyan ink respectively as the ink.
Claim 17
Dependent Claim
22 words
An ink set according to claim 12 , comprising yellow ink, magenta ink, cyan ink and black ink respectively as the ink.
Claim 18
Dependent Claim
28 words
An ink set according to claim 12 , wherein said ink is anionic ink and the zeta potential of said liquid composition is between +5 and +90 mV.
Claim 19
Dependent Claim
29 words
An ink set according to claim 12 , wherein said ink is anionic ink, and said liquid composition contains an acid and has a pH of 2 to 7.
Claim 20
Dependent Claim
23 words
An ink set according to 18 , wherein the acid shows a primary dissociation constant pKa of not more than 5 in water.
Claim 21
Dependent Claim
23 words
An ink set according to 18 , wherein the acid shows a primary dissociation constant pKa of not more than 5 in water.
Claim 22
Dependent Claim
28 words
An ink set according to claim 12 , wherein said ink is cationic ink and the zeta potential of the liquid composition is between −5 and −90 mV.
Claim 23
Dependent Claim
29 words
An ink set according to claim 12 , wherein said ink is cationic ink, and said liquid composition contains a base and has a pH of 7 to 12.
Claim 24
Dependent Claim
23 words
An ink set according to 21 , wherein the base shows a primary dissociation constant pKb of not more than 5 in water.
Claim 25
Dependent Claim
23 words
An ink set according to 21 , wherein the base shows a primary dissociation constant pKb of not more than 5 in water.
Claim 26
Dependent Claim
32 words
An ink set according to claim 12 , wherein the average particle diameter of the fine particles dispersed in the liquid composition is within a range of from 0.005 to 1 μm.
Claim 27
Dependent Claim
29 words
An ink set according to claim 1 , wherein the specific surface area of the fine particles is within a range of from 70 to 300 m 2 /g.
Claim 28
Dependent Claim
19 words
An ink set according to claim 12 , wherein said ink is anionic ink and contains an anionic compound.
Claim 29
Dependent Claim
20 words
An ink set according to claim 25 , wherein said anionic compound includes an aqueous dye having an anionic group.
Claim 30
Dependent Claim
23 words
An ink set according to claim 25 , wherein said anionic compound includes a pigment having an anionic group on the surface thereof.
Claim 31
Dependent Claim
25 words
An ink set according to claim 25 , wherein said ink contains a pigment and an anionic compound for dispersing the pigment in the ink.
Claim 32
Dependent Claim
19 words
An ink set according to claim 12 , wherein said ink is cationic ink and contains a cationic compound.
Claim 33
Dependent Claim
44 words
A method of forming a colored section on a recording medium, said method comprising the steps of (i) applying ink containing a coloring material to a recording medium and (ii) applying a liquid composition as defined in claim 1 above to the recording medium.
Claim 34
Dependent Claim
46 words
A method according to claim 30 , wherein said ink is anionic or cationic aqueous ink and said liquid composition is aqueous and contains fine particles electrically charged to the polarity opposite to that of said aqueous ink on the surfaces thereof in a dispersed state.
Claim 35
Dependent Claim
17 words
A method according to claim 30 , wherein said step (i) is conducted after said step (ii).
Claim 36
Dependent Claim
17 words
A method according to claim 30 , wherein said step (ii) is conducted after said step (i).
Claim 37
Dependent Claim
26 words
A method according to claim 30 , wherein said step (ii) is conducted after said step (i) and subsequently said step (i) is conducted once again.
Claim 38
Dependent Claim
28 words
A method according to claim 30 , wherein the step (i) is conducted by causing the ink to be ejected from an orifice according to a recording signal.
Claim 39
Dependent Claim
29 words
A method according to claim 30 , wherein the step (ii) is conducted by causing the liquid composition to be ejected from an orifice according to a recording signal.
Claim 40
Dependent Claim
36 words
A method according to claim 35 or 36 , wherein the ink-jet recording method to be used is a method of causing said liquid composition to be ejected by applying thermal energy to the liquid composition.
Claim 41
Dependent Claim
49 words
An ink-jet recording apparatus provided with an ink-container containing an ink, a liquid composition-container containing a liquid composition, and an ink-jet head for ejecting the ink and the liquid composition respectively, wherein the ink comprises a coloring material, and the liquid composition is that defined in claim 1 .
Claim 42
Dependent Claim
26 words
An apparatus according to claim 38 , wherein said ink-jet head is a thermal ink-jet head adapted to eject liquid by causing thermal energy to act.
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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) | 2008-03-07 | 2008-09-06 | 2009-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2012-03-07 | 2012-09-06 | 2013-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2016-03-07 | 2016-09-06 | 2017-03-08 | $7700.00 | Window Closed / Lapsed |