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Aqueous ink composition for ink-jet printing
Assignee: Fujifilm Holdings Corp
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Filing: 1983-02-17
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Granted: 1985-04-23
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Expires: 2003-02-17
Abstract
Abstract An aqueous ink composition is described which contains water-soluble dye dissolved in water, the dye comprising at least one water-soluble azo dye represented by formula (I) ##STR1## wherein R 1 represents an amino group, R 2 represents an alkyl group, and M represents a hydrogen atom, an alkali metal, an ammonium group or an organic amine group. The aqueous ink composition of the invention is suited for ink-jet printing.
Inventors
- 👤 Akira Ogawa
- 👤 Toshiaki Asano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:11
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/32; C09D11/328
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
83 words
An aqueous ink composition which contains water-soluble dye dissolved in water, said water-soluble dye comprising at least one water-soluble azo dye represented by formula (I) ##STR9## wherein R 1 represents an amino group, R 2 represents an alkyl group, and M represents a hydrogen atom, an alkali metal, an ammonium group or an organic amine group, wherein the water-soluble dye is incorporated in the ink composition in an amount of from 0.2 to 10 wt% based on the weight of the ink composition.
Claim 2
Dependent Claim
83 words
An aqueous ink composition which contains water-soluble dye dissolved in water, said water-soluble dye comprising at least one water-soluble azo dye represented by formula (I) ##STR9## wherein R 1 represents an amino group, R 2 represents an alkyl group, and M represents a hydrogen atom, an alkali metal, an ammonium group or an organic amine group, wherein the water-soluble dye is incorporated in the ink composition in an amount of from 0.2 to 10 wt% based on the weight of the ink composition.
Claim 3
Dependent Claim
82 words
An aqueous ink composition as in claim 1, wherein R 1 is an unsubstituted amino group or an amino group substituted with an acyl group, an alkyl group containing from 1 to 4 carbon atoms, or a phenyl group, and R 2 is an alkyl group containing from 1 to 4 carbon atoms, or a substituted alkyl group, the alkyl moiety of which contains from 1 to 4 carbon atoms, substituted with a hydroxy group, a chlorine atom, or a phenyl group.
Claim 4
Dependent Claim
42 words
An aqueous ink composition as in claim 1, wherein the water-soluble dye is represented by formula (II) ##STR10## wherein M is the same as defined in claim 1, and R 3 is a hydrogen atom, an acyl group or a sulfonyl group.
Claim 5
Dependent Claim
25 words
An aqueous ink composition as in claim 3, wherein the sulfo groups in formula (II) are in the form of the alkali metal salts thereof.
Claim 6
Dependent Claim
33 words
An aqueous ink composition as in claim 1, wherein the composition additionally comprises a wetting agent in an amount of from 0.2 to 30 wt% based on the weight of the ink composition.
Claim 7
Dependent Claim
86 words
An aqueous ink composition for ink-jet printing which contains water-soluble dye dissolved in water, said water-soluble dye comprising at least one water-soluble azo dye represented by formula (I) ##STR11## wherein R 1 represents an amino group, R 2 represents an alkyl group, and M represents a hydrogen atom, an alkali metal, an ammonium group or an organic amine group, wherein the water-soluble dye is incorporated in the ink composition in an amount of from 0.2 to 10 wt% based on the weight of the ink composition.
Claim 8
Dependent Claim
86 words
An aqueous ink composition for ink-jet printing which contains water-soluble dye dissolved in water, said water-soluble dye comprising at least one water-soluble azo dye represented by formula (I) ##STR11## wherein R 1 represents an amino group, R 2 represents an alkyl group, and M represents a hydrogen atom, an alkali metal, an ammonium group or an organic amine group, wherein the water-soluble dye is incorporated in the ink composition in an amount of from 0.2 to 10 wt% based on the weight of the ink composition.
References Cited (Backward Citations)
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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) | 1988-04-22 | 1988-10-22 | 1989-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-22 | 1992-10-22 | 1993-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-22 | 1996-10-22 | 1997-04-23 | $7700.00 | Window Closed / Lapsed |