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US4726844A
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Ink containing water-soluble non-reactive triazinyl mono-azo dye for ink jet printing
Assignee: Canon Inc
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Filing: 1986-09-08
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Granted: 1988-02-23
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Expires: 2006-09-08
Abstract
Abstract A water-soluble dye, free from cellulose reactive groups, of the formula: ##STR1## wherein R 1 is --(C a H 2a O) m (C b H 2b O) n H, R 2 is H or --(C a H 2a O) m (C b H 2b O) n H, or R 1 and R 2 together with the nitrogen atom form a morpholine ring a and b are different from 1 to 8 m is from 1 to 10; n is from 0 to 9; X is the residue of a diazotizable amine Y is NR 1 R 2 or non-chromophoric groups OR 3 or NR 3 R 4 in which R 3 and R 4 are independently selected from H, alkyl and aryl; and Z is: ##STR2## wherein M is a monovalent cation, and an ink containing the dye suitable for use in an ink jet printing process.
Inventors
- 👤 David Greenwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:06
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/32; C09D11/328; C09B; C09B43/00; C09B43/12; C09B43/136; C09B43/16
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
136 words
An ink comprising a water-soluble dye, free from cellulose reactive groups, of the formula: ##STR14## wherein R 1 is --(C a H 2a O) m (C b H 2b O) n H, R 2 is H or --(C a H 2a O) m (C b H 2b O) n H, or R 1 and R 2 together with the nitrogen atom form a morpholine ring a and b are different and from 1 to 8 m is from 1 to 10; n is from 0 to 9; X is the residue of a diazotisable amine Y is NR 1 R 2 or non-chromophoric groups OR 3 or NR 3 R 4 in which R 3 and R 4 are independently selected from H, alkyl and aryl; and Z is: ##STR15## wherein M is a monovalent cation.
Claim 2
Dependent Claim
136 words
An ink comprising a water-soluble dye, free from cellulose reactive groups, of the formula: ##STR14## wherein R 1 is --(C a H 2a O) m (C b H 2b O) n H, R 2 is H or --(C a H 2a O) m (C b H 2b O) n H, or R 1 and R 2 together with the nitrogen atom form a morpholine ring a and b are different and from 1 to 8 m is from 1 to 10; n is from 0 to 9; X is the residue of a diazotisable amine Y is NR 1 R 2 or non-chromophoric groups OR 3 or NR 3 R 4 in which R 3 and R 4 are independently selected from H, alkyl and aryl; and Z is: ##STR15## wherein M is a monovalent cation.
Claim 3
Dependent Claim
45 words
An ink comprising a dye in accordance with claim 1 suitable for a recording system of the type in which an ink is ejected from a small orifice in the form of droplets directed towards a substrate on which an image is to be formed.
Claim 4
Dependent Claim
23 words
An ink according to claim 1 wherein the dye is dissolved in water of a mixture of water and a water-soluble organic solvent.
Claim 5
Dependent Claim
15 words
An ink according to claim 3 wherein the water-soluble organic solvent is a polyhydric alcohol.
Claim 6
Dependent Claim
16 words
An ink according to claim 1 containing from 0.5% to 20% by weight of the dye.
References Cited (Backward Citations)
US4061627A
Cited
GB1579414A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-02-22 | 1991-08-24 | 1992-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-02-22 | 1995-08-24 | 1996-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-02-22 | 1999-08-24 | 2000-02-23 | $7700.00 | Window Closed / Lapsed |