EP0441987A2
Expired / Lapsed
EP
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Recording liquid and method for ink jet recording using same
Assignee: Canon Inc
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Filing: 1990-01-01
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Granted: —
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Expires: 2010-01-01
Abstract
Abstract A recording liquid comprises at least one of certain specified dyes carbon black, a water-soluble resin, a water-soluble organic solvent and water. The organic solvent includes polyhydric alcohol and/or its alkyl ether and an aliphatic monohydric alcohol. The water-soluble resin has an acid value of 50 to 300. The amount of the dissolved water-soluble resin is not more than 2% by weight. A method for ink jet recording comprises ejecting the recording liquid as liquid droplets from fine orifices by endowing the recording liquid with heat energy.
Inventors
- 👤 Yuko Suga
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 03:00
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/32
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
113 words
A recording liquid which comprises carbon black, a water-soluble resin, a water-soluble organic solvent including polyhydric alcohol and/or its alkyl ether and an aliphatic monohydric alcohol, and water, wherein the amount of the dissolved water-soluble resin is not more than 2% by weight and the recording liquid further contains at least one of dyes represented by the following general formulae (A) to (C): where R is - H, - COCH₃, and M is Na, Li, K or ammonium; wherein R₁ and R₂ are independently selected from -OCH₃, -CH₃, -NH₂ and -NHCOCH₃, n is 0 or 1 and M is Na, Li, K, or ammonium; and wherein M is Na, K, Li or ammonium.
Claim 2
Dependent Claim
113 words
A recording liquid which comprises carbon black, a water-soluble resin, a water-soluble organic solvent including polyhydric alcohol and/or its alkyl ether and an aliphatic monohydric alcohol, and water, wherein the amount of the dissolved water-soluble resin is not more than 2% by weight and the recording liquid further contains at least one of dyes represented by the following general formulae (A) to (C): where R is - H, - COCH₃, and M is Na, Li, K or ammonium; wherein R₁ and R₂ are independently selected from -OCH₃, -CH₃, -NH₂ and -NHCOCH₃, n is 0 or 1 and M is Na, Li, K, or ammonium; and wherein M is Na, K, Li or ammonium.
Claim 3
Dependent Claim
35 words
A recording liquid according to Claim 1, wherein the content of the carbon black is in the range of 3 to 20% by weight on the basis of the total weight of the recording liquid.
Claim 4
Dependent Claim
34 words
A recording liquid according to Claim 1, wherein the content of the dye is in the range of 0.5 to 2.0% by weight on the basis of the total weight of the recording liquid.
Claim 5
Dependent Claim
36 words
A recording liquid according to Claim 1, wherein the content of the aliphatic monohydric alcohol is in the range of 3 to 15% by weight on the basis of the total weight of the recording liquid.
Claim 6
Dependent Claim
39 words
A recording liquid according to Claim 1, wherein the content of the polyhydric alcohol and/or its alkyl ether is in the range of 10 to 15% by weight on the basis of the total weight of the recording liquid.
Claim 7
Dependent Claim
15 words
A recording liquid according to Claim 1, wherein the aliphatic monohydric alcohol is ethyl alcohol.
Claim 8
Independent Claim
140 words
A method for ink jet recording, which comprises ejecting a recording liquid as liquid droplets from fine orifices by endowing the recording liquid with heat energy, the recording liquid comprising carbon black, a water-soluble resin, a water-soluble organic solvent including polyhydric alcohol and/or its alkyl ethers and an aliphatic monohydric alcohol, and water, the amount of the dissolved water-soluble resin being not more than 2% by weight and the recording liquid further containing at least one of dyes represented by the following general formulae (A) to (C): wherein R is - H, -COCH₃, and M is Na, Li, K or ammonium; wherein R₁ and R₂ are groups selected from - OCH₃, - CH₃, - NH₂ and - NHCOCH₃, n is 0 or 1 and M is Na, Li, K or ammonium; and wherein M is Na, K, Li or ammonium.
Claim 9
Independent Claim
140 words
A method for ink jet recording, which comprises ejecting a recording liquid as liquid droplets from fine orifices by endowing the recording liquid with heat energy, the recording liquid comprising carbon black, a water-soluble resin, a water-soluble organic solvent including polyhydric alcohol and/or its alkyl ethers and an aliphatic monohydric alcohol, and water, the amount of the dissolved water-soluble resin being not more than 2% by weight and the recording liquid further containing at least one of dyes represented by the following general formulae (A) to (C): wherein R is - H, -COCH₃, and M is Na, Li, K or ammonium; wherein R₁ and R₂ are groups selected from - OCH₃, - CH₃, - NH₂ and - NHCOCH₃, n is 0 or 1 and M is Na, Li, K or ammonium; and wherein M is Na, K, Li or ammonium.
Claim 10
Dependent Claim
34 words
A method according to Claim 7, wherein the content of the carbon black is in the range of 3 to 20% by weight on the basis of the total weight of the recording liquid.
Claim 11
Dependent Claim
33 words
A method according to Claim 7, wherein the content of the dye is in the range of 0.5 to 2.0% by weight on the basis of the total weight of the recording liquid.
Claim 12
Dependent Claim
35 words
A method according to Claim 7, wherein the content of the aliphatic monohydric alcohol is in the range of 3 to 15% by weight on the basis of the total weight of the recording liquid.
Claim 13
Dependent Claim
38 words
A method according to Claim 7, wherein the content of the polyhydric alcohol and/or its alkyl ether is in the range of 10 to 50% by weight on the basis of the total weight of the recording liquid.
Claim 14
Dependent Claim
14 words
A method according to Claim 7, wherein the aliphatic monohydric alcohol is ethyl alcohol.
Claim 15
Dependent Claim
18 words
A method according to Claim 7, wherein the water-soluble resin has an acid value of 50 to 300.
Claim 16
Dependent Claim
18 words
A method according to Claim 7, wherein the water-soluble resin has an acid value of 70 to 250.
Claim 17
Dependent Claim
124 words
A recording liquid which comprises carbon black, a water-soluble resin, a water-soluble organic solvent including polyhydric alcohol and/or its alkyl ether and an aliphatic monohydric alcohol, and water, wherein the water-soluble resin has an acid value ot 50 to 300, the amount of the dissolved water-soluble resin is not more than 2% by weight and the recording liquid further contains at least one of dyes represented by the following general formulae (A) to (C): where R is - H, - COCH₃, and M is Na, Li, K or ammonium; wherein R₁ and R₂ are independently selected from OCH₃, -CH₃, -NH₂ and -NHCOCH₃, n is 0 or 1 and M is Na, Li, K, or ammonium; and wherein M is Na, K, Li or ammonium.
Claim 18
Dependent Claim
124 words
A recording liquid which comprises carbon black, a water-soluble resin, a water-soluble organic solvent including polyhydric alcohol and/or its alkyl ether and an aliphatic monohydric alcohol, and water, wherein the water-soluble resin has an acid value ot 50 to 300, the amount of the dissolved water-soluble resin is not more than 2% by weight and the recording liquid further contains at least one of dyes represented by the following general formulae (A) to (C): where R is - H, - COCH₃, and M is Na, Li, K or ammonium; wherein R₁ and R₂ are independently selected from OCH₃, -CH₃, -NH₂ and -NHCOCH₃, n is 0 or 1 and M is Na, Li, K, or ammonium; and wherein M is Na, K, Li or ammonium.
Claim 19
Dependent Claim
35 words
A recording liquid according to Claim 15, wherein the content of the carbon black is in the range of 3 to 20% by weight on the basis of the total weight of the recording liquid.
Claim 20
Dependent Claim
34 words
A recording liquid according to Claim 15, wherein the content of the dye is in the range of 0.5 to 2.0% by weight on the basis of the total weight of the recording liquid.
Claim 21
Dependent Claim
36 words
A recording liquid according to Claim 15, wherein the content of the aliphatic monohydric alcohol is in the range of 3 to 15% by weight on the basis of the total weight of the recording liquid.
Claim 22
Dependent Claim
39 words
A recording liquid according to Claim 15, wherein the content of the polyhydric alcohol and/or its alkyl ether is in the range of 10 to 15% by weight on the basis of the total weight of the recording liquid.
References Cited (Backward Citations)
No citation records indexed.
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