EP0404494A1
Expired / Lapsed
EP
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Thermal ink jet compositions
Assignee: Xerox Corp
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Filing: 1990-06-19
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Granted: —
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Expires: 2010-06-19
Abstract
Abstract A thermal ink jet printing composition comprises a dye, a liquid medium, and a surfactant selected from the group consisting of polyoxyalkylated ethers, anionic bitail fluoro alkyls, alkyl aryl sulfonates, alkyl amine quaternary salts, and mixtures thereof. Also disclosed is a process for generating images which comprises causing the ink compositions disclosed herein to be ejected from a thermal ink jet printer in imagewise fashion onto a substrate.
Inventors
- 👤 William M. Schwarz, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 01:25
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/38
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
73 words
A thermal ink jet printing composition comprising a dye, a liquid medium, and a surfactant selected from the group consisting of polyoxyethylated ethers of the formula R-O(CH₂CH₂O) n -CH₂CH₂OH wherein R is an aliphatic hydrocarbon chain of from about 8 to about 40 carbon atoms and n is a number of from 1 to about 100, anionic bitail fluoro alkyls of the formula alkyl aryl sulfonates, alkyl amine quaternary salts, and mixtures thereof.
Claim 2
Dependent Claim
73 words
A thermal ink jet printing composition comprising a dye, a liquid medium, and a surfactant selected from the group consisting of polyoxyethylated ethers of the formula R-O(CH₂CH₂O) n -CH₂CH₂OH wherein R is an aliphatic hydrocarbon chain of from about 8 to about 40 carbon atoms and n is a number of from 1 to about 100, anionic bitail fluoro alkyls of the formula alkyl aryl sulfonates, alkyl amine quaternary salts, and mixtures thereof.
Claim 3
Dependent Claim
16 words
A thermal ink jet printing composition according to claim 1, wherein the liquid medium includes water.
Claim 4
Dependent Claim
18 words
A thermal ink jet printing composition according to claim 2, wherein the liquid medium also contains a humectant.
Claim 5
Dependent Claim
29 words
A thermal ink jet printing composition according to any one of the preceding claims, wherein the dye is selected from the group consisting of direct dyes and acid dyes.
Claim 6
Dependent Claim
68 words
A thermal ink jet printing composition according to any one of the preceding claims, wherein the dye is present in an amount of from about 0.5 to about 8 percent by weight, the liquid medium is present in an amount of from about 7 to about 93 percent by weight, and the surfactant is present in an amount of from about 0.1 to about 8 percent by weight.
Claim 7
Dependent Claim
116 words
A thermal ink jet printing composition according to any one of the preceding claims, wherein the dye is present in an amount of from about 0.5 to about 8 percent by weight, the surfactant is present in an amount of from about 0.1 to about 4 percent by weight, water is present in an amount of from about 7 to about 93 percent by weight, ethylene glycol is present in an amount of from about 5 to about 60 percent by weight, N-methyl-2-pyrrolidone is present in an amount of from about 2 to about 20 percent by weight, and a biocide is present in an amount of from about 0.01 to about 1 percent by weight.
Claim 8
Dependent Claim
115 words
A thermal ink jet printing composition according to claim 6, wherein the dye is present in an amount of from about 1 to about 6 percent by weight, the ethylene glycol is present in an amount of from about 10 to about 20 percent by weight, the N-methyl-2-pyrrolidone is present in an amount of from about 4 to about 16 percent by weight, the surfactant is present in an amount of from about 0.2 to about 2 percent by weight, the biocide is present in an amount of from about 0.1 to about 0.5 percent by weight, and the water is present in an amount of from about 55.5 to about 85 percent by weight.
Claim 9
Dependent Claim
30 words
A thermal ink jet printing composition according any one of claims 1 to 7, wherein the surfactant comprises a mixture of a polyoxyethylated ether and an anionic bitail fluoro alkyl.
Claim 10
Dependent Claim
32 words
A thermal ink jet printing composition according to any one of claims 1 to 7, wherein the surfactant comprises a mixture of an anionic bitail fluoro alkyl and an alkyl aryl sulfonate.
Claim 11
Dependent Claim
37 words
A thermal ink jet printing composition according to any one of claims 1 to 7, wherein the surfactant comprises a mixture of an anionic bitail fluoro alkyl, an alkyl amine quarternary salt, and an alkyl aryl sulfonate.
Claim 12
Dependent Claim
65 words
A thermal ink jet ink composition according to any one of claims 1 to 7 wherein the surfactant is of the formula wherein R is selected from the group consisting of alkyl groups with from about 3 to about 12 carbon atoms and aryl groups with from about 6 to about 12 carbon atoms, n is 1 or 2, and M is a monovalent metal.
Claim 13
Dependent Claim
61 words
A thermal ink jet ink composition according to any one of claims 1 to 7, wherein the surfactant is of the formula wherein R₁ is an alkyl group with from about 8 to about 30 carbon atoms and R₂ and R₃ are selected from the group consisting of alkyl groups with from 1 to about 4 carbon atoms and ethoxy groups.
Claim 14
Dependent Claim
95 words
A thermal ink jet ink composition according to any one of claims 1 to 7 wherein the surfactant is of the formula wherein R₂, R₃, R₄, and R₅ are selected from the group consisting of alkyl groups with from 1 to about 4 carbon atoms and ethoxy chains, R₁ is an alkyl group with from about 8 to about 30 carbon atoms, and R₆ is selected from the group consisting of alkyl groups with from 1 to about 4 carbon atoms, ethoxy chains, and alkyl groups with from about 8 to about 30 carbon atoms.
Claim 15
Dependent Claim
55 words
A thermal ink jet ink composition according to any one of claims 1 to 4, wherein the liquid medium comprises about 40 percent by weight of ethylene glycol and about 60 percent by weight of water, the dye comprises Telon Fast Yellow 4GL-175, and the surfactant is a mixture of a compound of the formula
Claim 16
Dependent Claim
35 words
A process for generating images which comprises causing an ink composition as claimed in any one of the preceding claims to be ejected in imagewise fashion from a thermal ink jet printer onto a substrate.
References Cited (Backward Citations)
US3948668A
Cited
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