US5141559A
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Ink composition
Assignee: Seiko Epson Corp
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Filing: 1990-03-02
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Granted: 1992-08-25
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Expires: 2010-03-02
Abstract
Abstract An ink composition particularly well suited for use in an ink jet printer wherein the ink is jetted at temperatures higher than room temperature. The ink composition includes a metallic complex solvent dye coloring material dispersed in a vehicle of at least one high molecular weight alkyl amine, at least one high molecular weight fatty acid and carnauba wax.
Inventors
- 👤 Masakazu Shinozuka
- 👤 Masamitsu Uehara
- 👤 Makoto Matsuzaki
- 👤 Kenichi Kanbayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:28
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/34
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
111 words
An ink composition for ink jet recording on a recording medium at temperatures higher than room temperature, comprising: a vehicle including a mixture of at least one high molecular weight alkyl amine, at least one high molecular weight fatty acid and carnauba wax; and an effective amount of a metallic complex solvent dye dissolved in the vehicle to provide sufficient optical density for recording; the alkyl amine and fatty acid are present in effective amounts to allow the dye to dissolve in the carnauba wax and provide a stable ink composition that is one of solid or semi-solid at room temperature and having a melting or pour point above room temperature.
Claim 2
Dependent Claim
111 words
An ink composition for ink jet recording on a recording medium at temperatures higher than room temperature, comprising: a vehicle including a mixture of at least one high molecular weight alkyl amine, at least one high molecular weight fatty acid and carnauba wax; and an effective amount of a metallic complex solvent dye dissolved in the vehicle to provide sufficient optical density for recording; the alkyl amine and fatty acid are present in effective amounts to allow the dye to dissolve in the carnauba wax and provide a stable ink composition that is one of solid or semi-solid at room temperature and having a melting or pour point above room temperature.
Claim 3
Dependent Claim
13 words
The ink composition of claim 1, wherein the fatty acid is stearic acid.
Claim 4
Dependent Claim
21 words
The ink composition of claim wherein the high molecular weight alkyl amine is a wax having at least 14 carbon atoms.
Claim 5
Dependent Claim
29 words
The ink composition of claim 1, wherein the high molecular weight amine is present between about 0.1 and 10 weight percent, based on the total weight of the composition.
Claim 6
Dependent Claim
24 words
The ink composition of claim 1, wherein the high molecular weight fatty acid is a fatty acid having at least about 15 carbon atoms.
Claim 7
Dependent Claim
30 words
The ink composition of claim 1, wherein the high molecular weight fatty acid is present between about 0.1 and 30 weight percent, based on the total weight of the composition.
Claim 8
Dependent Claim
27 words
The ink composition of claim 1, wherein the carnauba wax is present between about 1 and 30 weight percent, based on the total weight of the composition.
Claim 9
Dependent Claim
29 words
The ink composition of claim 1, wherein the metallic complex solvent dye is present between about 0.1 and 10 weight percent, based on the total weight of the composition.
Claim 10
Dependent Claim
29 words
The ink composition of claim 1, wherein the metallic complex solvent dye is present between about 3 and 10 weight percent, based on the total weight of the composition.
Claim 11
Dependent Claim
34 words
The ink composition of claim 4, wherein the high molecular weight amine is selected from the group consisting of stearyl amine, distearyl amine, tristearyl amine, dicetyl amine, N-ethyl-cetyl amine, myristyl amine and dimyristyl amine.
Claim 12
Dependent Claim
12 words
The ink composition of claim 8, wherein the amine is cetyl amine.
Claim 13
Dependent Claim
31 words
The ink composition of claim 5, wherein the high molecular weight fatty acid is selected from the group consisting of lauric acid, palmitic acid, stearic acid, behenic acid and brassidic acid.
Claim 14
Dependent Claim
13 words
The ink composition of claim 8, wherein the fatty acid is stearic acid.
Claim 15
Dependent Claim
22 words
The ink composition of claim 1, further including an effective amount of an antioxidant to substantially limit oxidation of the ink composition.
Claim 16
Independent Claim
140 words
A method for preparing an ink composition for ink jet recording on a recording medium, comprising: mixing an effective amount of a metallic complex solvent dye to provide sufficient optical density with at least one high molecular weight alkyl amine and at least one high molecular weight fatty acid to form a first mixture; stirring the first mixture at a temperature of at least 80° C. to dissolve the dye; mixing an effective amount of carnauba wax with the first mixture to form a second mixture, the amount of dye, amine and fatty acid selected to be effective to dissolve the dye and provide a stable ink composition that is one of solid or semi-solid at room temperature and to have a melting or pour point above room temperature; and stirring the second mixture to form a uniformly dissolved mixture.
Claim 17
Independent Claim
140 words
A method for preparing an ink composition for ink jet recording on a recording medium, comprising: mixing an effective amount of a metallic complex solvent dye to provide sufficient optical density with at least one high molecular weight alkyl amine and at least one high molecular weight fatty acid to form a first mixture; stirring the first mixture at a temperature of at least 80° C. to dissolve the dye; mixing an effective amount of carnauba wax with the first mixture to form a second mixture, the amount of dye, amine and fatty acid selected to be effective to dissolve the dye and provide a stable ink composition that is one of solid or semi-solid at room temperature and to have a melting or pour point above room temperature; and stirring the second mixture to form a uniformly dissolved mixture.
Claim 18
Dependent Claim
20 words
The method of claim 15, wherein the high molecular weight amine is present between about 0.1 and 10 weight percent.
Claim 19
Dependent Claim
21 words
The method of claim 15, wherein the high molecular weight fatty acid is present between about 0.1 and 30 weight percent.
Claim 20
Dependent Claim
18 words
The method of claim 15, wherein the carnauba wax is present between about 1 and 30 weight percent.
Claim 21
Dependent Claim
17 words
The method of claim 15, wherein the dye is present between about 0.1 and 10 weight percent.
Claim 22
Dependent Claim
56 words
An ink jet composition for ink jet recording on a recording medium, comprising: between about 5 and 10 weight percent of C.I. Acid Black 123; between about 3 and 7 weight percent of cetyl amine; between about 5 and 15 weight percent of carnauba wax; and between about 45 and 72 weight percent of paraffin wax.
Claim 23
Dependent Claim
56 words
An ink jet composition for ink jet recording on a recording medium, comprising: between about 5 and 10 weight percent of C.I. Acid Black 123; between about 3 and 7 weight percent of cetyl amine; between about 5 and 15 weight percent of carnauba wax; and between about 45 and 72 weight percent of paraffin wax.
Claim 24
Dependent Claim
44 words
The ink composition of claim 20, wherein the ink composition includes 7 weight percent of C.I. Acid Black 123, 5 weight percent of cetyl amine, 10 weight percent of stearic acid, 20 weight percent of carnauba wax and 57 weight percent of paraffin wax.
Claim 25
Dependent Claim
21 words
The ink composition of claim 21, further including an effective amount of at least one antioxidant for stabilizing the ink composition.
Claim 26
Dependent Claim
92 words
An ink composition for ink jet recording on a recording medium at temperatures higher than room temperature, comprising: a vehicle including a mixture of at least one high molecular weight fatty acid and carnauba wax; and an effective amount of a metallic complex solvent dye to provide sufficient optical density for recording dissolved in the vehicle; the and fatty acid being present in an effective amount to provide a stable ink composition that is one of solid or semi-solid at room temperature and having a melting or pour point above room temperature.
Claim 27
Dependent Claim
92 words
An ink composition for ink jet recording on a recording medium at temperatures higher than room temperature, comprising: a vehicle including a mixture of at least one high molecular weight fatty acid and carnauba wax; and an effective amount of a metallic complex solvent dye to provide sufficient optical density for recording dissolved in the vehicle; the and fatty acid being present in an effective amount to provide a stable ink composition that is one of solid or semi-solid at room temperature and having a melting or pour point above room temperature.
Claim 28
Dependent Claim
14 words
The ink composition of claim 23, wherein the dye is C.I. Acid Black 123.
Claim 29
Dependent Claim
24 words
The ink composition of claim 23, wherein the high molecular weight fatty acid is a fatty acid having at least about 15 carbon atoms.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-08-25 | 1996-02-24 | 1996-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-08-25 | 2000-02-24 | 2000-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-08-25 | 2004-02-24 | 2004-08-25 | $7700.00 | Window Closed / Lapsed |