Patent US4537631A successfully refreshed from Google Patents.
US4537631A
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Ink jet ink formulation for reduced start-up problems
Assignee: Exxon Mobil Corp
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Filing: 1983-08-12
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Granted: 1985-08-27
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Expires: 2003-08-12
Abstract
Abstract An ink jet ink formulated to substantially reduce or eliminate start-up problems when an ink jet apparatus is initially discharged. The ink comprises at least two fluid components. The components have been matched to provide an ink that substantially maintains its initial formulation despite evaporation of the components.
Inventors
- 👤 Theodore M. Cooke
- 👤 Robert A. Lin
- 👤 Richard G. Whitfield
- 👤 Allan G. Hock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:55
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/52
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
25 words
A ink jet ink comprising about 5-15 weight percent oleic acid, about 47.5 to 60.0 weight percent benzyl ether, and at least one dye component.
Claim 2
Dependent Claim
25 words
A ink jet ink comprising about 5-15 weight percent oleic acid, about 47.5 to 60.0 weight percent benzyl ether, and at least one dye component.
Claim 3
Dependent Claim
17 words
The ink jet ink of claim 1 further comprising about 20 to about 28 weight percent n-(2-hydroxyethyl)-2-pyrrolidone.
Claim 4
Dependent Claim
17 words
The ink jet ink of claim 2 further comprising about 14-15 weight percent of said dye component.
Claim 5
Dependent Claim
30 words
The ink jet ink of claim 1 wherein said dye component is selected from the group consisting of chinoline yellow, nigrosine base, chrom chelated yellow, typophor black and mixtures thereof.
Claim 6
Dependent Claim
24 words
The ink jet ink of claim 1 wherein the surface tension of said ink at operating temperature is about 32 to about 39 dynes/cm.
Claim 7
Dependent Claim
10 words
The ink jet ink of claim 1 further comprising n-cyclohexyl-2-pyrrolidone.
Claim 8
Dependent Claim
13 words
The ink jet ink of claim 6 comprising about 10 weight percent n-cyclohexyl-2-pyrrolidone.
Claim 9
Dependent Claim
10 words
An ink jet ink comprising dibutyl sebacate and typophor black.
Claim 10
Dependent Claim
10 words
An ink jet ink comprising dibutyl sebacate and typophor black.
Claim 11
Dependent Claim
21 words
The ink jet ink of claim 8 comprising about 30 weight percent dibutyl sebacate and about 70 weight percent typohor black.
Claim 12
Dependent Claim
24 words
The ink jet ink of claim 8 having surface tensions at between 76° F. and 135° F. of between about 29.8 and 32.0 dynes/cm.
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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) | 1988-08-26 | 1989-02-25 | 1989-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-08-26 | 1993-02-25 | 1993-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-08-26 | 1997-02-25 | 1997-08-27 | $7700.00 | Window Closed / Lapsed |