US4781758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ink composition for drop-on-demand ink jet
Assignee: IBM Information Products Corp
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Filing: 1987-10-22
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Granted: 1988-11-01
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Expires: 2007-10-22
Abstract
Abstract A substantially aqueous composition for drop on demand ink jet printing comprising a fluid vehicle with greater than 50% by weight water, a water soluble dye in the range of 1-10% by weight, a lower alkylene glycol plasticizer in the range of concentration of 1-20% by weight, and in the range of 1-10% by weight, a water soluble additive which is a low molecular weight heterocyclic, bifunctional monomer or dimer in which the two functional groups are either two imide groups, or a hydantoin bearing a carboxylic acid group, with both the imide groups and the amide groups being capped with hydroxyalkylene units.
Inventors
- 👤 Paul L. Gendler
- 👤 Alfred H. Sporer
- 👤 Donald A. Stremel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:48
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/38
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
103 words
A substantially aqueous composition for drop on demand ink jet printing comprising: a fluid vehicle with greater than 50% by weight water, a water soluble dye in the range of 1-10% by weight, a lower alkylene glycol plasticizer in the range of concentration of 1-20% by weight, and in the range of 1-10% by weight, a water soluble additive which is a low molecular weight heterocyclic, bifunctional monomer or dimer in which the two functional groups are either two imide groups, or a hydantoin bearing a carboxylic acid group, with both the imide groups and the amide groups being capped with hydroxyalkylene units.
Claim 2
Dependent Claim
103 words
A substantially aqueous composition for drop on demand ink jet printing comprising: a fluid vehicle with greater than 50% by weight water, a water soluble dye in the range of 1-10% by weight, a lower alkylene glycol plasticizer in the range of concentration of 1-20% by weight, and in the range of 1-10% by weight, a water soluble additive which is a low molecular weight heterocyclic, bifunctional monomer or dimer in which the two functional groups are either two imide groups, or a hydantoin bearing a carboxylic acid group, with both the imide groups and the amide groups being capped with hydroxyalkylene units.
Claim 3
Dependent Claim
16 words
An ink composition as claimed in claim 1 wherein the additive is a dimer of 5,5-dimethylhydantoin-formaldehyde.
Claim 4
Dependent Claim
18 words
An ink composition as claimed in claim 1 wherein the additive is formed from alloxan and glyoxylic acid.
Claim 5
Dependent Claim
19 words
An ink composition as claimed in claim 1 wherein the additive is formed from 1,1'(1,1 ethylidene)bishydantoin and glyoxylic acid.
Claim 6
Dependent Claim
14 words
An ink composition as claimed in claim 1 wherein the plasticizer is ethylene glycol.
Claim 7
Dependent Claim
15 words
An ink composition as claimed in claim 1 wherein the dye is water soluble nigrosin.
Claim 8
Dependent Claim
15 words
An ink composition as claimed in claim 1 wherein the dye is Food Black 2.
Claim 9
Dependent Claim
15 words
An ink composition as claimed in claim 1 wherein the dye is Direct Black 163.
Claim 10
Dependent Claim
17 words
An ink composition as claimed in claim 1 wherein the dye is Mobay Special Black SP Liquid.
References Cited (Backward Citations)
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US3705043A
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US3846141A
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US4153593A
Cited
US4184881A
Cited
US4239543A
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US4455168A
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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) | 1991-11-01 | 1992-05-02 | 1992-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-11-01 | 1996-05-02 | 1996-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-11-01 | 2000-05-02 | 2000-11-01 | $7700.00 | Window Closed / Lapsed |