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US5324349A
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Ink compositions for ink jet printing
Assignee: Seiko Epson Corp
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Filing: 1993-05-19
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Granted: 1994-06-28
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Expires: 2013-05-19
Abstract
Abstract An ink for ink jet printing comprising a pigment, a component selected from the group consisting of saccharides, derivatives thereof and polyols having 5 or more hydroxyl groups, and a resin emulsion. This pigment-type ink is excellent in preservability, does not cause obstruction in a nozzle, and can evenly produce an image.
Inventors
- 👤 Yukari Sano
- 👤 Junko Shimizu
- 👤 Hiroko Hayashi
- 👤 Kiyohiko Takemoto
- 👤 Satoru Arata
- 👤 Issei Kawabata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:38
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/32; C09D11/322
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
37 words
An aqueous ink composition for ink jet printing comprising: (a) a pigment, (b) a component selected from the group consisting of saccharides, derivatives thereof and polyols having 5 or more hydroxyl groups, and (c) a resin emulsion.
Claim 2
Dependent Claim
37 words
An aqueous ink composition for ink jet printing comprising: (a) a pigment, (b) a component selected from the group consisting of saccharides, derivatives thereof and polyols having 5 or more hydroxyl groups, and (c) a resin emulsion.
Claim 3
Dependent Claim
26 words
An ink composition according to claim 1, wherein the saccharides as the component (b) are selected from the group consisting of monosaccharides, disaccharides, oligosaccharides and polysaccharides.
Claim 4
Dependent Claim
32 words
An ink composition according to claim 1, wherein the derivatives of the saccharides as the component (b) are reducing sugars, oxidized sugars, dehydrated sugar derivatives, amino sugars or thiosugars of the saccharides.
Claim 5
Dependent Claim
16 words
An ink composition according to claim 1, wherein the polyol as the component (b) is inositol.
Claim 6
Dependent Claim
21 words
An ink composition according to claim 1, wherein the resin emulsion has a minimum film-forming temperature of 50° C. or more.
Claim 7
Dependent Claim
39 words
An ink composition according to claim 1, wherein the resin emulsion is selected from the group consisting of acrylic resin emulsions, vinyl acetate resin emulsion, vinyl chloride resin emulsions, acryl-styrene resin emulsions polybutadiene resin emulsions and stylene resin emulsions.
Claim 8
Dependent Claim
31 words
An ink composition according to claim 1, wherein the weight ratio of a resin component of the resin emulsion: the component (b) is from 1:0.5 or more but less than 1:50.
Claim 9
Dependent Claim
53 words
An ink composition according to claim 1, wherein the weight ratio of the pigment: a resin component of the resin emulsion is from 1:0.1 to 1:2, and the weight ratio of the component (b): the total amount of the pigment and the resin component of the resin emulsion is from 1:0.1 to 1:2.
Claim 10
Dependent Claim
32 words
An ink composition according to claim 1, wherein a resin component of the resin emulsion is present in an amount of from 0.1 to 40% by weight based on the ink composition.
Claim 11
Dependent Claim
28 words
An ink composition according to claim 1, wherein the component (b) is present in an amount of from 0.1 to 40% by weight based on the ink composition.
Claim 12
Dependent Claim
12 words
An ink composition according to claim 1, further comprising a wetting agent.
Claim 13
Dependent Claim
17 words
An ink composition according to claim 11, further comprising an organic solvent having a low boiling point.
Claim 14
Dependent Claim
26 words
An ink composition according to claim 1, wherein the component (a) is a pigment dispersion obtained by dispersing a pigment in a solvent using a dispersant.
Claim 15
Dependent Claim
48 words
An ink composition according to claim 13, wherein the weight ratio of the total amount of the pigment and the resin component of the resin emulsion: the dispersant is from 1:0.02 to 1:0.5, and the weight ratio of the dispersant: the component (b) is from 1:0.5 to 1:50.
Claim 16
Dependent Claim
15 words
An ink composition according to claim 13, wherein the pigment dispersion further comprises an amine.
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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) | 1997-06-27 | 1997-12-27 | 1998-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-06-27 | 2001-12-27 | 2002-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-06-27 | 2005-12-27 | 2006-06-28 | $7700.00 | Window Closed / Lapsed |