Patent BE634264A successfully refreshed from Google Patents.
US5482545A
Expired / Lapsed
US
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Ink, and ink-jet recording method and instrument using the same
Assignee: Canon Inc
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Filing: 1994-12-23
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Granted: 1996-01-09
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Expires: 2014-12-23
Abstract
Abstract Disclosed herein is an ink comprising a dye having at least one anionic group, an amino acid type polyamine or a polyethyleneimine containing at least 7 nitrogen atoms in its molecule, and water, wherein the dye is either a metallized azo dye or a nonmetallized azo dye satisfying the following conditions (x) and (y) at the same time: (x) no anionic group is situated at an ortho position to the azo bond, and at least one anionic group exists at another position than the ortho position to the azo bond; and (y) at least one aromatic residue is bonded to the azo bond, and the aromatic ring of the aromatic residue is a benzene or naphthalene ring, with the proviso that the aromatic rings situated on both sides of the azo bond are not naphthalene rings at the same time if present.
Inventors
- 👤 Makoto Aoki
- 👤 Yoshifumi Hattori
- 👤 Mayumi Yamamoto
- 👤 Shinichi Tochihara
- 👤 Yoshihisa Takizawa
- 👤 Akira Nagashima
- 👤 Shinichi Sato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:06
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/32; C09D11/328; B; B41; B41M; B41M1/00; B41M1/42
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
149 words
An ink comprising a dye having at least one anionic group, a polyamine selected from the group consisting of a polyamine containing an amino acid group and a polyethyleneimine containing at least 7 nitrogen atoms in its molecule, and water, wherein the dye is either a metallized azo dye or a nonmetallized azo dye satisfying the following conditions (x) and (y) at the same time: (x) no anionic group is situated at an ortho position to the azo bond, and at least one anionic group exists at another position than the ortho position to the azo bond; and (y) at least one aromatic residue is bonded to the azo bond, and the aromatic ring of the aromatic residue is a benzene or naphthalene ring, with the proviso that the aromatic rings situated on both sides of the azo bond are not naphthalene rings at the same time if present.
Claim 2
Dependent Claim
149 words
An ink comprising a dye having at least one anionic group, a polyamine selected from the group consisting of a polyamine containing an amino acid group and a polyethyleneimine containing at least 7 nitrogen atoms in its molecule, and water, wherein the dye is either a metallized azo dye or a nonmetallized azo dye satisfying the following conditions (x) and (y) at the same time: (x) no anionic group is situated at an ortho position to the azo bond, and at least one anionic group exists at another position than the ortho position to the azo bond; and (y) at least one aromatic residue is bonded to the azo bond, and the aromatic ring of the aromatic residue is a benzene or naphthalene ring, with the proviso that the aromatic rings situated on both sides of the azo bond are not naphthalene rings at the same time if present.
Claim 3
Dependent Claim
22 words
The ink according to claim 1, wherein the molecular weight of the polyethyleneimine falls within a range of from 300 to 100,000.
Claim 4
Dependent Claim
20 words
The ink according to claim 1, wherein the polyamine containing an amino acid group has 1 to 20 nitrogen atoms.
Claim 5
Dependent Claim
32 words
The ink according to claim 1, wherein the polyamine or the polyethyleneimine is contained in a range of from 0.01 to 10% by weight based on the total weight of the ink.
Claim 6
Dependent Claim
29 words
The ink according to claim 1, wherein the water is contained in a range of from 40 to 96% by weight based on the total weight of the ink.
Claim 7
Dependent Claim
29 words
The ink according to claim 1, wherein the dye is contained in a range of from 0.1 to 10% by weight based on the total weight of the ink.
Claim 8
Dependent Claim
30 words
The ink according to claim 1, wherein the anionic group is selected from the group consisting of a sulfonic group, a carboxylic group, a phosphoric group and substituted groups thereof.
Claim 9
Dependent Claim
78 words
The ink according to claim 1, wherein the nonmetallized dye is selected from the group consisting of Direct Yellow 1, Direct Yellow 8, Direct Yellow 9, Direct Yellow 10, Direct Yellow 28, Direct Yellow 44, Direct Yellow 50, Acid Yellow 11, Acid Yellow 17, Acid Yellow 23, Acid Yellow 25, Acid Yellow 36, Acid Yellow 38, Acid Yellow 42, Acid Yellow 44, Acid Yellow 72, Acid Yellow 99, Acid Red 183, Acid Red 186 and Acid Red 296.
Claim 10
Dependent Claim
36 words
An ink-jet recording method comprising applying an ink to a recording medium by an ink-jet system to conduct recording, wherein the ink according to any one of claim 1 to 8 is used as said ink.
Claim 11
Dependent Claim
28 words
The ink-jet recording method according to claim 9, wherein the ink-jet system is a system in which thermal energy is applied to the ink to generate ink droplets.
Claim 12
Dependent Claim
40 words
A recording unit comprising an ink container portion and a head from which the ink is ejected in the form of ink droplets, wherein the ink according to any one of claim 1 to 8 is used as said ink.
Claim 13
Dependent Claim
29 words
The recording unit according to claim 11, wherein an ink-jet system, in which thermal energy is applied to the ink to generate ink droplets, is applied to the head.
Claim 14
Dependent Claim
25 words
An ink cartridge comprising an ink container portion, wherein the ink according to any one of claim 1 to 8 is used as said ink.
Claim 15
Dependent Claim
12 words
An ink-jet recording apparatus comprising the recording unit according to claim 11.
Claim 16
Dependent Claim
12 words
An ink-jet recording apparatus comprising the ink cartridge according to claim 13.
Claim 17
Dependent Claim
11 words
An ink-jet recording apparatus comprising the recording unit of claim 12.
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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) | 1999-01-08 | 1999-07-10 | 2000-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-01-08 | 2003-07-10 | 2004-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-01-08 | 2007-07-10 | 2008-01-09 | $7700.00 | Window Closed / Lapsed |