Patent US4585484A successfully refreshed from Google Patents.
US4585484A
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US
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Recording liquid
Assignee: Canon Inc
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Filing: 1984-03-20
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Granted: 1986-04-29
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Expires: 2004-03-20
Abstract
Abstract A recording liquid comprises a dye selected from C.I. Direct Blue 199, C.I. Direct Yellow 86 and C.I. Food Black 2 as the recording agent for forming an image and a liquid medium for dissolving or dispersing said recording agent therein, said liquid medium comprising at least: (a) either one or both of polyethylene glycol and polyethylene glycol monomethyl ether, (b) either one or both of diethylene glycol and sulfolane, (c) either one or both of N-methyl-2-pyrrolidone and 1,3-dimethyl-2-imidazolidinone and (d) water.
Inventors
- 👤 Masahiro Haruta
- 👤 Tadayuki Nakousai
- 👤 Kazuo Iwata
- 👤 Keiko Nakousai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:14
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/16; C09D11/17; C09D11/30; C09D11/32; C09D11/328
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
65 words
A recording liquid comprising C.I. Direct Blue 199 as a recording agent and a liquid medium for dissolving or dispersing said recording agent therein, said liquid medium comprising at least: (a) either one or both of polyethylene glycol and polyethylene glycol monomethyl ether, (b) either one or both of diethylene glycol and sulfolane, (c) either one or both of N-methyl-2-pyrrolidone and 1,3-dimethyl-2-imidazolidinone, and (d) water.
Claim 2
Dependent Claim
65 words
A recording liquid comprising C.I. Direct Blue 199 as a recording agent and a liquid medium for dissolving or dispersing said recording agent therein, said liquid medium comprising at least: (a) either one or both of polyethylene glycol and polyethylene glycol monomethyl ether, (b) either one or both of diethylene glycol and sulfolane, (c) either one or both of N-methyl-2-pyrrolidone and 1,3-dimethyl-2-imidazolidinone, and (d) water.
Claim 3
Dependent Claim
28 words
A recording liquid according to claim 1, wherein C.I. Direct Blue 199 is contained in a quantity of from 0.1 to 20% by weight of the recording liquid.
Claim 4
Dependent Claim
28 words
A recording liquid according to claim 2, wherein C.I. Direct Blue 199 is contained in a quantity of from 0.5 to 15% by weight of the recording liquid.
Claim 5
Dependent Claim
28 words
A recording liquid according to claim 3, wherein C.I. Direct Blue 199 is contained in a quantity of from 1 to 10% by weight of the recording liquid.
Claim 6
Dependent Claim
39 words
A recording liquid according to claim 1, wherein said liquid medium contains one or both of polyethylene glycol and polyethylene glycol monomethyl ether in a quantity of from 1 to 30% based on the weight of the recording liquid.
Claim 7
Dependent Claim
36 words
A recording liquid according to claim 1, wherein said liquid medium contains one or both of diethylene glycol and sulfolane in a quantity of from 1 to 40% based on the weight of the recording liquid.
Claim 8
Dependent Claim
35 words
A recording liquid according to claim 1, wherein said liquid medium contains one or both of N-methyl-2-pyrrolidone and 1,3-dimethyl-2-imidazolidinone in a quantity of from 1 to 40% based on the weight of the recording liquid.
Claim 9
Dependent Claim
29 words
A recording liquid according to claim 1, wherein said liquid medium contains water in a quantity of from 10 to 90% based on the weight of the recording liquid.
Claim 10
Dependent Claim
65 words
A recording liquid comprising C.I. Direct Yellow 86 as a recording agent and a liquid medium for dissolving or dispersing said recording agent therein, said liquid medium comprising at least: (a) either one or both of polyethylene glycol and polyethylene glycol monomethyl ether, (b) either one or both of diethylene glycol and sulforane, (c) either one or both of N-methyl-2-pyrrolidone and 1,3-dimethyl-2-imidazolidinone, and (d) water.
Claim 11
Dependent Claim
65 words
A recording liquid comprising C.I. Direct Yellow 86 as a recording agent and a liquid medium for dissolving or dispersing said recording agent therein, said liquid medium comprising at least: (a) either one or both of polyethylene glycol and polyethylene glycol monomethyl ether, (b) either one or both of diethylene glycol and sulforane, (c) either one or both of N-methyl-2-pyrrolidone and 1,3-dimethyl-2-imidazolidinone, and (d) water.
Claim 12
Dependent Claim
28 words
A recording liquid according to claim 9, wherein C.I. Direct Yellow 86 is contained in a quantity of from 0.1 to 20% by weight of the recording liquid.
Claim 13
Dependent Claim
28 words
A recording liquid according to claim 10, wherein C.I. Direct Yellow 86 is contained in a quantity of from 0.5 to 15% by weight of the recording liquid.
Claim 14
Dependent Claim
28 words
A recording liquid according to claim 11, wherein C.I. Direct Yellow 86 is contained in a quantity of from 1 to 10% by weight of the recording liquid.
Claim 15
Dependent Claim
39 words
A recording liquid according to claim 9, wherein said liquid medium contains one or both of polyethylene glycol and polyethylene glycol monomethyl ether in a quantity of from 1 to 30% based on the weight of the recording liquid.
Claim 16
Dependent Claim
36 words
A recording liquid according to claim 9, wherein said liquid medium contains one or both of diethylene glycol and sulfolane in a quantity of from 1 to 40% based on the weight of the recording liquid.
Claim 17
Dependent Claim
35 words
A recording liquid according to claim 9, wherein said liquid medium contains one or both of N-methyl-2-pyrrolidone and 1,3-dimethyl-2-imidazolidinone in a quantity of from 1 to 40% based on the weight of the recording liquid.
Claim 18
Dependent Claim
29 words
A recording liquid according to claim 9, wherein said liquid medium contains water in a quantity of from 10 to 90% based on the weight of the recording liquid.
Claim 19
Dependent Claim
65 words
A recording liquid comprising C.I. Food Black 2 as a recording agent and a liquid medium for dissolving or dispersing said recording agent therein, said liquid medium comprising at least: (a) either one or both of polyethylene glycol and polyethylene glycol monomethyl ether, (b) either one or both of diethylene glycol and sulforane, (c) either one or both of N-methyl-2-pyrrolidone and 1,3-dimethyl-2-imidazolidinone, and (d) water.
Claim 20
Dependent Claim
65 words
A recording liquid comprising C.I. Food Black 2 as a recording agent and a liquid medium for dissolving or dispersing said recording agent therein, said liquid medium comprising at least: (a) either one or both of polyethylene glycol and polyethylene glycol monomethyl ether, (b) either one or both of diethylene glycol and sulforane, (c) either one or both of N-methyl-2-pyrrolidone and 1,3-dimethyl-2-imidazolidinone, and (d) water.
Claim 21
Dependent Claim
28 words
A recording liquid according to claim 17, wherein C.I. Food Black 2 is contained in a quantity of from 0.1 to 20% by weight of the recording liquid.
Claim 22
Dependent Claim
28 words
A recording liquid according to claim 18, wherein C.I. Food Black 2 is contained in a quantity of from 0.5 to 15% by weight of the recording liquid.
Claim 23
Dependent Claim
28 words
A recording liquid according to claim 19, wherein C.I. Food Black 2 is contained in a quantity of from 1 to 10% by weight of the recording liquid.
Claim 24
Dependent Claim
39 words
A recording liquid according to claim 17, wherein said liquid medium contains one or both of polyethylene glycol and polyethylene glycol monomethyl ether in a quantity of from 1 to 30% based on the weight of the recording liquid.
Claim 25
Dependent Claim
36 words
A recording liquid according to claim 17, wherein said liquid medium contains one or both of diethylene glycol and sulfolane in a quantity of from 1 to 40% based on the weight of the recording liquid.
Claim 26
Dependent Claim
35 words
A recording liquid according to claim 17, wherein said liquid medium contains one or both of N-methyl-2-pyrrolidone and 1,3-dimethyl-2-imidazolidinone in a quantity of from 1 to 40% based on the weight of the recording liquid.
Claim 27
Dependent Claim
29 words
A recording liquid according to claim 17, wherein said liquid medium contains water in a quantity of from 10 to 90% based on the weight of the recording liquid.
Claim 28
Dependent Claim
83 words
A recording liquid comprising (1) a recording agent selected from the group consisting of C.I. Direct Blue 199, C.I. Direct Yellow 86, C.I. Food Black 2 and mixtures thereof and (2) a liquid medium for dissolving or dispersing said recording agent therein, said liquid medium comprising at least: (a) either one or both of polyethylene glycol and polyethylene glycol monomethyl ether, (b) either one or both of diethylene glycol and sulfolane, (c) either one or both of n-methyl-2-pyrrolidone and 1,3-dimethyl-2-imidazolidinone, and (d) water.
Claim 29
Dependent Claim
83 words
A recording liquid comprising (1) a recording agent selected from the group consisting of C.I. Direct Blue 199, C.I. Direct Yellow 86, C.I. Food Black 2 and mixtures thereof and (2) a liquid medium for dissolving or dispersing said recording agent therein, said liquid medium comprising at least: (a) either one or both of polyethylene glycol and polyethylene glycol monomethyl ether, (b) either one or both of diethylene glycol and sulfolane, (c) either one or both of n-methyl-2-pyrrolidone and 1,3-dimethyl-2-imidazolidinone, and (d) water.
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) | 1989-04-28 | 1989-10-28 | 1990-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-28 | 1993-10-28 | 1994-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-28 | 1997-10-28 | 1998-04-29 | $7700.00 | Window Closed / Lapsed |