US5078790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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
2026-10-25 12:41
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.
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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 |