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EP0591004A2
Expired / Lapsed
EP
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Ink composition for ink jet recording and process for producing the same
Assignee: Seiko Epson Corp
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Filing: 1993-10-01
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Granted: —
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Expires: 2013-10-01
Abstract
Abstract An ink composition for ink jet recording comprising a dye, 1 to 10 % by weight of glycerin, 1 to 5 % by weight of a monohydric alcohol having 4 or less carbon atoms, 0.5 to 10 % by weight of 1,3-dimethyl-2-imidazolidinone and 75 to 95 % by weight of water. The ink composition of the present invention can offer a good balance of properties required of the ink jet recording ink, especially quality of the print, dryability of the print, water-resistance of the print, storage stability and a property that does not attack members constituting a recording head and an ink passage.
Inventors
- 👤 Onishi Hiroyuki
- 👤 Takemoto Kiyohiko
- 👤 Yoshiike Etsuko
- 👤 Serizawa Naomi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 11:11
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/02; C09D11/30
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
62 words
An ink composition for ink jet recording comprising 0.01 % by weight or more of C.I. Direct Black 168 or 154, 1 to 10 % by weight of glycerin, 1 to 10 % by weight of a monohydric alcohol having 4 or less carbon atoms, 0.5 to 10 % by weight of 1,3-dimethyl-2-imidazolidinone and 75 to 95 % by weight of water.
Claim 2
Dependent Claim
20 words
An ink composition according to claim 1, which further comprises a dye other than C.I. Direct Black 168 and 154.
Claim 3
Dependent Claim
19 words
An ink composition according to claim 1, wherein the monohydric alcohol having 4 or less carbon atoms is ethanol.
Claim 4
Dependent Claim
27 words
An ink composition according to claim 1, wherein the ratio of 1,3-dimethyl-2-imidazolidinone to glycerin is in the range of from 2 : 1 to 1 : 5.
Claim 5
Dependent Claim
39 words
A process for producing an ink composition according to claim 1, comprising adding a monohydric alcohol having 4 or less carbon atoms at a temperature of 40°C or below to a mixture comprising a dye, glycerin, 1,3-dimethyl-2-imidazolidinone and water.
References Cited (Backward Citations)
No citation records indexed.
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