US6399674B1
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Ink set and ink-jet color recording method using the same
Assignee: Canon Inc
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Filing: 1995-07-12
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Granted: 2002-06-04
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Expires: 2015-07-12
Abstract
Abstract Disclosed herein is a set of water-based pigment inks for ink-jet, comprising a black pigment ink and other pigment inks different in hue from the black pigment ink, which the pigment inks each comprise water, a water-soluble organic solvent and an aqueous pigment dispersion, wherein respective polymeric dispersants used in the black pigment ink and the other pigment inks different in hue from the black pigment ink are different in polarity from each other.
Inventors
- 👤 Akio Kashiwazaki
- 👤 Yuko Suga
- 👤 Hiroyuki Ishinaga
- 👤 Hiromichi Noguchi
- 👤 Yutaka Kurabayashi
- 👤 Aya Takaide
- 👤 Kiyomitsu Kudo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:18
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/40; Y; Y10; Y10S; Y10S260/00; Y10S260/38
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
86 words
An ink set for ink-jet recording, comprising a cationic black ink comprising carbon black and a water-soluble cationic polymer and an anionic color ink, wherein the carbon black has a pH value of from 7 to 10, has an average particle diameter of 80 to 200 nm, and is contained in the ink at an amount of 1 to 20% by weight, and wherein the water-soluble cationic polymer comprises at least a (meth)acrylic ester or (meth)acrylamide monomer having a tertiary amine salt or quaternary ammonium group.
Claim 2
Dependent Claim
86 words
An ink set for ink-jet recording, comprising a cationic black ink comprising carbon black and a water-soluble cationic polymer and an anionic color ink, wherein the carbon black has a pH value of from 7 to 10, has an average particle diameter of 80 to 200 nm, and is contained in the ink at an amount of 1 to 20% by weight, and wherein the water-soluble cationic polymer comprises at least a (meth)acrylic ester or (meth)acrylamide monomer having a tertiary amine salt or quaternary ammonium group.
Claim 3
Dependent Claim
41 words
The ink set according to claim 1 , wherein a contact angle of the cationic black ink with plain paper is greater than 90°, and a contact angle of the anionic color ink with plain paper is not greater than 90°.
Claim 4
Dependent Claim
30 words
The ink set according to claim 1 , wherein a penetration rate of the cationic black ink into a plain paper is lower than that of the anionic color ink.
Claim 5
Dependent Claim
27 words
The ink set according to claim 1 , wherein at least one of the cationic black ink and the anionic color ink further comprises a water-soluble dye.
Claim 6
Dependent Claim
43 words
The ink set according to claim 1 , wherein the ink set further comprises a plurality of anionic color inks as the anionic color ink, and the plurality of anionic color inks includes a yellow ink, a magenta ink and a cyan ink.
Claim 7
Dependent Claim
51 words
The ink set according to claim 1 , wherein the ink set comprises a plurality of anionic color inks as the anionic color ink, and the plurality of anionic color inks includes a yellow ink, a magenta ink, a cyan ink, a red ink, a green ink and a blue ink.
Claim 8
Dependent Claim
42 words
The ink set according to claim 1 , wherein the ink set comprises a plurality of anionic color inks as the anionic color ink, and the plurality of anionic color inks includes a red ink, a green ink and a blue ink.
Claim 9
Dependent Claim
53 words
The ink set according to claim 1 , wherein a surface tension of the cationic black ink is higher than a surface tension of the anionic color ink so that a penetration rate of the cationic black ink into a plain paper is lower than a penetration rate of the anionic color ink.
Claim 10
Dependent Claim
42 words
The ink set according to claim 8 , wherein the cationic black ink has a surface tension in a range of 40 to 65 dyne/cm, and the anionic color ink has a surface tension in a range of 25 to 40 dyne/cm.
Claim 11
Dependent Claim
58 words
The ink set according to claim 1 , wherein the (meth)acrylic ester monomer having a tertiary amine salt or a quaternary amine salt and the (meth)acrylamide monomer having a tertiary amine salt or quaternary ammonium group include N, N-dimethylaminoethylmethacrylate, N, N-dimethylaminoethylacrylate, N, N-dimethylaminopropylmethacrylate, N, N-dimethylaminopropylacrylate, N, N-dimethylacrylamide, N, N-dimethylmethacrylamide, N, N-dimethylaminoethylacrylamide, N, N-dimethylaminoethylmethacrylamide, N, N-dimethylaminopropylacrylamide, and N, N-dimethylaminopropylmethacrylamide.
Claim 12
Dependent Claim
77 words
A cationic black ink for ink-jet recording comprising carbon black and a water-soluble cationic polymer, wherein the carbon black has a pH value of from 7 to 10, has an average particle diameter of 80 to 200 nm, and is contained in the ink at an amount of 1 to 20% by weight, and wherein the water-soluble cationic polymer comprises at least a (meth)acrylic ester or (meth)acrylamide monomer having a tertiary amine salt or quaternary ammonium group.
Claim 13
Dependent Claim
77 words
A cationic black ink for ink-jet recording comprising carbon black and a water-soluble cationic polymer, wherein the carbon black has a pH value of from 7 to 10, has an average particle diameter of 80 to 200 nm, and is contained in the ink at an amount of 1 to 20% by weight, and wherein the water-soluble cationic polymer comprises at least a (meth)acrylic ester or (meth)acrylamide monomer having a tertiary amine salt or quaternary ammonium group.
Claim 14
Dependent Claim
59 words
The cationic black ink according to claim 11 , wherein the (meth)acrylic ester monomer having a tertiary amine salt or a quaternary amine salt and the (meth)acrylamide monomer having a tertiary amine salt or quaternary ammonium group include N, N-dimethylaminoethylmethacrylate, N, N-dimethylaminoethylacrylate, N, N-dimethylaminopropylmethacrylate, N, N-dimethylaminopropylacrylate, N, N-dimethylacrylamide, N, N-dimethylmethacrylamide, N, N-dimethylaminoethylacrylamide, N, N-dimethylaminoethylmethacrylamide, N, N-dimethylaminopropylacrylamide, and N, N-dimethylaminopropylmethacrylamide.
Claim 15
Dependent Claim
22 words
The cationic black ink according to claim 11 , wherein the ink has a pH in a range of 3 to 7.
Claim 16
Dependent Claim
78 words
A cationic black ink for ink-jet recording comprising carbon black and a water-soluble cationic polymer, wherein the carbon black has a pH value of from neutral to alkaline, has an average particle diameter of from 80 to 200 nm, and is contained in the ink at an amount of 1 to 20% by weight, and wherein the water-soluble cationic polymer comprises at least a (meth)acrylic ester or (meth)acrylamide monomer having a tertiary amine salt or quaternary ammonium group.
Claim 17
Dependent Claim
78 words
A cationic black ink for ink-jet recording comprising carbon black and a water-soluble cationic polymer, wherein the carbon black has a pH value of from neutral to alkaline, has an average particle diameter of from 80 to 200 nm, and is contained in the ink at an amount of 1 to 20% by weight, and wherein the water-soluble cationic polymer comprises at least a (meth)acrylic ester or (meth)acrylamide monomer having a tertiary amine salt or quaternary ammonium group.
Claim 18
Dependent Claim
115 words
An ink-jet recording process for recording an image, the image comprising a black image and a color image on a recording medium, comprising a step of ejecting a cationic black ink and an anionic color ink from respective ink-jet nozzles and attaching the respective inks on the recording medium, wherein the cationic black ink comprises carbon black having a pH value of from 7 to 10, having an average particle diameter of 80 to 200 nm, and that is contained in the ink at an amount of 1 to 20% by weight, and a water-soluble cationic polymer comprising at least a (meth)acrylic ester or (meth)acrylamide monomer having a tertiary amine salt or quaternary ammonium group.
Claim 19
Dependent Claim
115 words
An ink-jet recording process for recording an image, the image comprising a black image and a color image on a recording medium, comprising a step of ejecting a cationic black ink and an anionic color ink from respective ink-jet nozzles and attaching the respective inks on the recording medium, wherein the cationic black ink comprises carbon black having a pH value of from 7 to 10, having an average particle diameter of 80 to 200 nm, and that is contained in the ink at an amount of 1 to 20% by weight, and a water-soluble cationic polymer comprising at least a (meth)acrylic ester or (meth)acrylamide monomer having a tertiary amine salt or quaternary ammonium group.
Claim 20
Dependent Claim
26 words
The ink-jet recording process according to claim 15 , wherein the anionic color ink contains a pigment corresponding to the color and an anionic polymeric dispersant.
Claim 21
Dependent Claim
29 words
The process according to claim 16 , wherein the anionic polymeric dispersant has a hydrophilic group selected from the group consisting of a carboxylic group and a sulfonic group.
Claim 22
Dependent Claim
42 words
The process according to claim 15 , wherein a contact angle of the cationic black ink with a plain paper is greater than 90°, and a contact angle of the anionic color ink with the plain paper is not greater than 90°.
Claim 23
Dependent Claim
31 words
The process according to claim 15 , wherein a penetration rate of the cationic black ink into a plain paper is lower than a penetration rate of the anionic color ink.
Claim 24
Dependent Claim
26 words
The process according to claim 15 , wherein at least one of the cationic black ink and the anionic color ink further comprises a water-soluble dye.
Claim 25
Dependent Claim
27 words
The process according to claim 15 , wherein the anionic color ink is at least one of a yellow ink, a magenta ink and a cyan ink.
Claim 26
Dependent Claim
36 words
The process according to claim 15 , wherein the anionic color ink is at least one of a yellow ink, a magenta ink, a cyan ink, a red ink, a green ink and a blue ink.
Claim 27
Dependent Claim
27 words
The process according to claim 15 , wherein the anionic color ink is at least one of a red ink, a green ink and a blue ink.
Claim 28
Dependent Claim
52 words
The process according to claim 15 , wherein a surface tension of the cationic black ink is higher than a surface tension of the anionic color ink so that a penetration rate of the cationic black ink into a plain paper is lower than a penetration rate of the anionic color ink.
Claim 29
Dependent Claim
41 words
The process according to claim 24 , wherein the cationic black ink has a surface tension in a range of 40 to 65 dyne/cm, and the anionic color ink has a surface tension in a range of 25 to 40 dyne/cm.
Claim 30
Dependent Claim
22 words
The ink set according to claim 1 , wherein the carbon black has a primary particle size of 15 to 40 nm.
Claim 31
Dependent Claim
30 words
The ink set according to claim 1 , wherein the carbon black has a specific surface area of 50 to 300 m 2 /g in accordance with the BET method.
Claim 32
Dependent Claim
22 words
The ink set according to claim 1 , wherein the carbon black has DBP oil absorption of 40 to 150 ml/100 g.
Claim 33
Dependent Claim
25 words
The ink set according to claim 1 , wherein the anionic color ink contains a pigment corresponding to the color and an anionic polymeric dispersant.
Claim 34
Dependent Claim
29 words
The ink set according to claim 29 , wherein the anionic-polymeric dispersant has a hydrophilic group selected from the group consisting of a carboxylic group and a sulfonic group.
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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) | 2005-06-03 | 2005-12-03 | 2006-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-06-03 | 2009-12-03 | 2010-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-06-03 | 2013-12-03 | 2014-06-04 | $7700.00 | Window Closed / Lapsed |