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US5078790A
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Ink, ink-jet recording process, and instrument making use of the ink
Assignee: Canon Inc
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Filing: 1991-02-06
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Granted: 1992-01-07
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Expires: 2011-02-06
Abstract
Abstract An ink comprises a recording agent and a liquid medium capable of dissolving or dispersing the recording agent, wherein said ink contains both a compound represented by the following Formula (I) and a compound represented by the following Formula (II): ##STR1## wherein R 1 , R 2 and R 3 each represent an alkyl group or a hydroxyalkyl group, and any one of them may represent a hydrogen atom; X - represents an inorganic acid ion; R 4 and R 5 each represent a group selected from a hydrogen atom, an alkyl group and a hydroxyalkyl group; and R 6 represents a group selected from a carboxyl group, a hydroxyl group, a sulfone group, an alkyl group and a hydrogen atom. The ink is suitably used in the ink-jet recording.
Inventors
- 👤 Shinichi Tochihara
- 👤 Makoto Aoki
- 👤 Kumiko Mafune
- 👤 Osamu Nishiwaki
- 👤 Kenji Aono
- 👤 Akira Nagashima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:08
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/38
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
176 words
An ink comprising a recording agent and a liquid medium capable of dissolving or dispersing the recording agent, wherein said ink contains both a compound represented by the following Formula (I) and a compound represented by the following Formula (II) wherein the total amount of said compounds is in the range of from 0.5 wt. % to 20 wt. % based on the total weight of the ink ##STR4## wherein R 1 , R 2 and R 3 each represent an alkyl group or a hydroxyalkyl group, and any one of them may represent a hydrogen atom; X - represents an inorganic acid ion; R 4 and R 5 each represent a group selected from a hydrogen atom, an alkyl group and a hydroxyalkyl group; and R 6 represents a group selected from a carboxyl group, a hydroxyl group, a sulfone group, an alkyl group and a hydrogen atom and wherein said compound represented by Formula (I) and compound represented by Formula (II) are mixed in a proportion ranging from 9:1 to 1:9 in weight ratio.
Claim 2
Dependent Claim
176 words
An ink comprising a recording agent and a liquid medium capable of dissolving or dispersing the recording agent, wherein said ink contains both a compound represented by the following Formula (I) and a compound represented by the following Formula (II) wherein the total amount of said compounds is in the range of from 0.5 wt. % to 20 wt. % based on the total weight of the ink ##STR4## wherein R 1 , R 2 and R 3 each represent an alkyl group or a hydroxyalkyl group, and any one of them may represent a hydrogen atom; X - represents an inorganic acid ion; R 4 and R 5 each represent a group selected from a hydrogen atom, an alkyl group and a hydroxyalkyl group; and R 6 represents a group selected from a carboxyl group, a hydroxyl group, a sulfone group, an alkyl group and a hydrogen atom and wherein said compound represented by Formula (I) and compound represented by Formula (II) are mixed in a proportion ranging from 9:1 to 1:9 in weight ratio.
Claim 3
Dependent Claim
29 words
An ink according to claim 1, wherein the compound represented by Formula (I) is a hydrochloride of a compound selected from the group consisting of trimethylamine, triethylamine and triethanolamine.
Claim 4
Dependent Claim
21 words
An ink according to claim 1, wherein said liquid medium comprises a mixed solvent of water and a water-soluble organic solvent.
Claim 5
Dependent Claim
31 words
An ink according to claim 3, wherein said water is contained in an amount of from 40 wt. % to 95 wt. % based on the total weight of the ink.
Claim 6
Dependent Claim
33 words
An ink according to claim 3, wherein said water-soluble organic solvent is contained in an amount of from 1 wt. % to 40 wt. % based on the total weight of the ink.
References Cited (Backward Citations)
US3985663A
Cited
US4171983A
Cited
JPS54104933A
Cited
JPS54143305A
Cited
JPS5529546A
Cited
JPS59757A
Cited
US4554555A
Cited
JPS6214189A
Cited
EP0224909A2
Cited
DE3706434A1
Cited
US4966480A
Cited
US4975117A
Cited
US4874894A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-01-06 | 1995-07-08 | 1996-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-01-06 | 1999-07-08 | 2000-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-01-06 | 2003-07-08 | 2004-01-07 | $7700.00 | Window Closed / Lapsed |