US6932465B2
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US
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Reaction solution, set of reaction solution and ink, ink jet recording apparatus and image recording method
Assignee: CANNON KABUSHIKI KAOSJA
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Filing: 2003-09-15
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Granted: 2005-08-23
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Expires: 2023-09-15
Abstract
Abstract A reaction solution to be used for image recording with an ink containing a coloring material in a dissolved or dispersed state in order to achieve a high level of image density with stability, wherein the reaction solution contains a polyvalent metal ion and an organic solvent to destabilize the dissolved or dispersed state of the coloring material in the ink in contact with the ink, has a pH of 2 or higher, and has a buffering action for pH, wherein the buffering action means it can maintain pH variation within the range of 0.5 before and after the addition of 1.0 ml of a 0.1 N aqueous lithium hydroxide solution to 50 ml of the reaction solution.
Inventors
- 👤 Yasuhiro Nito
- 👤 Shinya Mishina
- 👤 Shinichi Hakamada
- 👤 Yoichi Takada
- 👤 Toshifumi Akasaka
- 👤 Masashi Tsujimura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:42
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/0011; B41M5/0017; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/21; B41J2/2107; B41J2/2114; C; C09; C09D; C09D11/00; C09D11/30; C09D11/40; C09D11/54; B41J2/135; B41J2/165; B41J2/16505; B41J2/16508; B41M7/00; B41M7/0018
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
120 words
A reaction solution for use in image recording in conjunction with an ink containing a coloring material in a dissolved or dispersed state, the reaction solution destabilizing the dissolved or dispersed state of the coloring material in the ink by contact with the ink, the reaction solution comprising: a polyvalent metal ion; an organic solvent; a buffer; and a metal ion derived from the buffer, the reaction solution has a pH of 2 or higher, and has a buffering action for variations in pH, wherein the buffering action means maintaining pH variation within the range of 0.5 before and after the addition of 1.0 ml of a 0.1 N aqueous lithium hydroxide solution to 50 ml of the reaction solution.
Claim 2
Dependent Claim
120 words
A reaction solution for use in image recording in conjunction with an ink containing a coloring material in a dissolved or dispersed state, the reaction solution destabilizing the dissolved or dispersed state of the coloring material in the ink by contact with the ink, the reaction solution comprising: a polyvalent metal ion; an organic solvent; a buffer; and a metal ion derived from the buffer, the reaction solution has a pH of 2 or higher, and has a buffering action for variations in pH, wherein the buffering action means maintaining pH variation within the range of 0.5 before and after the addition of 1.0 ml of a 0.1 N aqueous lithium hydroxide solution to 50 ml of the reaction solution.
Claim 3
Dependent Claim
33 words
The reaction solution according to claim 1 , wherein the amount of the polyvalent metal ion is from 0.01% to 10% inclusive by weight based on the total amount of the reaction solution.
Claim 4
Dependent Claim
18 words
The reaction solution according to claim 1 , wherein the reaction solution further contains a strong acid ion.
Claim 5
Dependent Claim
19 words
The reaction solution according to claim 1 , wherein the pH of the reaction solution is 7 or lower.
Claim 6
Dependent Claim
123 words
A set of an ink and a reaction solution comprising: an ink containing a coloring material in a dissolved or dispersed state, and a reaction solution capable of destabilizing the dissolved or dispersed state of the coloring material in the ink by contact with the ink, wherein the reaction solution contains a polyvalent metal ion, an organic solvent, a buffer, and a metal ion derived from the buffer, the reaction solution has a pH of 2 or higher, and has a buffering action for variations in pH, wherein the buffering action means maintaining pH variation within the range of 0.5 before and after the addition of 1.0 ml of a 0.1 N aqueous lithium hydroxide solution to 50 ml of the reaction solution.
Claim 7
Dependent Claim
123 words
A set of an ink and a reaction solution comprising: an ink containing a coloring material in a dissolved or dispersed state, and a reaction solution capable of destabilizing the dissolved or dispersed state of the coloring material in the ink by contact with the ink, wherein the reaction solution contains a polyvalent metal ion, an organic solvent, a buffer, and a metal ion derived from the buffer, the reaction solution has a pH of 2 or higher, and has a buffering action for variations in pH, wherein the buffering action means maintaining pH variation within the range of 0.5 before and after the addition of 1.0 ml of a 0.1 N aqueous lithium hydroxide solution to 50 ml of the reaction solution.
Claim 8
Dependent Claim
152 words
An inkjet recording apparatus comprising: a recording head for discharging an ink containing a coloring material in a dissolved or dispersed state; an ink cartridge having an ink storage unit containing the ink; ink supply means for supplying the ink from the ink cartridge to the recording head; and means for supplying a reaction solution capable of destabilizing the dissolved or dispersed state of the coloring material in the ink by contact with the ink, wherein the reaction solution contains a polyvalent metal ion, an organic solvent, a buffer, and a metal ion derived from the buffer, the reaction solution has a pH of 2 or higher, and has a buffering action far variations in pH, wherein the buffering action means maintaining pH variation within the range of 0.5 before and after the addition of 1.0 ml of a 0.1 N aqueous lithium hydroxide solution to 50 ml of the reaction solution.
Claim 9
Dependent Claim
152 words
An inkjet recording apparatus comprising: a recording head for discharging an ink containing a coloring material in a dissolved or dispersed state; an ink cartridge having an ink storage unit containing the ink; ink supply means for supplying the ink from the ink cartridge to the recording head; and means for supplying a reaction solution capable of destabilizing the dissolved or dispersed state of the coloring material in the ink by contact with the ink, wherein the reaction solution contains a polyvalent metal ion, an organic solvent, a buffer, and a metal ion derived from the buffer, the reaction solution has a pH of 2 or higher, and has a buffering action far variations in pH, wherein the buffering action means maintaining pH variation within the range of 0.5 before and after the addition of 1.0 ml of a 0.1 N aqueous lithium hydroxide solution to 50 ml of the reaction solution.
Claim 10
Dependent Claim
34 words
The inkjet recording apparatus according to claim 6 , wherein the amount of the polyvalent metal ion is from 0.01% to 10% inclusive by weight based on the total amount of the reaction solution.
Claim 11
Dependent Claim
19 words
The inkjet recording apparatus according to claim 6 , wherein the reaction solution further contains a strong acid ion.
Claim 12
Dependent Claim
20 words
The inkjet recording apparatus according to claim 6 , wherein the pH of the reaction solution is 7 or lower.
Claim 13
Dependent Claim
24 words
The inkjet recording apparatus according to claim 6 , wherein the pH of the reaction solution is lower than the pH of the ink.
Claim 14
Dependent Claim
24 words
The inkjet recording apparatus according to claim 6 , wherein the viscosity of the reaction solution is greater than the viscosity of the ink.
Claim 15
Dependent Claim
22 words
The inkjet recording apparatus according to claim 6 , comprising a coating roller for coating the reaction solution on a recording medium.
Claim 16
Dependent Claim
31 words
The inkjet recording apparatus according to claim 12 , wherein the amount of the reaction solution applied on the recording medium is from 0.5 g/m 2 to 10 g/m 2 inclusive.
Claim 17
Dependent Claim
138 words
An image recording method comprising: a step of coating a recording medium with a reaction solution capable of destabilizing the dissolved or dispersed state of a coloring material in an ink by contact with the ink containing the coloring material in a dissolved or dispersed state; and a step of coating the ink on the recording medium by the inkjet method, wherein the reaction solution contains a polyvalent metal ion, an organic solvent, a buffer, and a metal ion derived from the buffer, the reaction solution has a pH of 2 or higher, and has a buffering action for variations in pH, wherein the buffering action means maintaining pH variation within the range of 0.5 before and after the addition of 1.0 ml of a 0.1 N aqueous lithium hydroxide solution to 50 ml of the reaction solution.
Claim 18
Dependent Claim
138 words
An image recording method comprising: a step of coating a recording medium with a reaction solution capable of destabilizing the dissolved or dispersed state of a coloring material in an ink by contact with the ink containing the coloring material in a dissolved or dispersed state; and a step of coating the ink on the recording medium by the inkjet method, wherein the reaction solution contains a polyvalent metal ion, an organic solvent, a buffer, and a metal ion derived from the buffer, the reaction solution has a pH of 2 or higher, and has a buffering action for variations in pH, wherein the buffering action means maintaining pH variation within the range of 0.5 before and after the addition of 1.0 ml of a 0.1 N aqueous lithium hydroxide solution to 50 ml of the reaction solution.
Claim 19
Dependent Claim
34 words
The image recording method according to claim 14 , wherein the amount of the polyvalent metal ion is from 0.01% to 10% inclusive by weight based on the total amount of the reaction solution.
Claim 20
Dependent Claim
19 words
The image recording method according to claim 14 , wherein the reaction solution further contains a strong acid ion.
Claim 21
Dependent Claim
20 words
The image recording method according to claim 14 , wherein the pH of the reaction solution is 7 or lower.
Claim 22
Dependent Claim
24 words
The image recording method according to claim 14 , wherein the pH of the reaction solution is lower than the pH of the ink.
Claim 23
Dependent Claim
24 words
The image recording method according to claim 14 , wherein the viscosity of the reaction solution is greater than the viscosity of the ink.
Claim 24
Dependent Claim
26 words
The image recording method according to claim 14 , wherein coating of the reaction solution on the recording medium is carried out by a coating roller.
Claim 25
Dependent Claim
31 words
The image recording method according to claim 20 , wherein the amount of the reaction solution applied on the recording medium is from 0.5 g/m 2 to 10 g/m 2 inclusive.
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