US4822418A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drop on demand ink jet ink comprising dubutyl sebecate
Assignee: Ricoh Printing Systems America Inc
•
Filing: 1988-01-27
•
Granted: 1989-04-18
•
Expires: 2008-01-27
Abstract
Abstract A novel ink jet composition for use in drop on demand ink jet printers is disclosed comprising 85-99 weight percent of a vehicle consisting essentially of dibutyl sebacate and oleic acid. In the preferred embodiment, the dibutyl sebacate comprises between about 40 to 65, preferably about 60 weight percent of said ink. The subject ink, when utilizing an infrared readable colorant such as nigrosine base, is particularly suited for generating IR readable bar codes.
Inventors
- 👤 An-Chung R. Lin
- 👤 Theodore M. Cooke
- 👤 Alfred R. Merritt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:32
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/34; C09D11/02; C09D11/06
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
50 words
An ink jet ink composition for use in drop on demand ink jet printers, consisting essentially of: (a) 85-99 weight percent of a vehicle consisting essentially of: (i) 30 to 80 weight percent dibutyl sebacate and (ii) 20 to 70 weight percent oleic acid; and (b) 1-15 weight percent colorant.
Claim 2
Dependent Claim
50 words
An ink jet ink composition for use in drop on demand ink jet printers, consisting essentially of: (a) 85-99 weight percent of a vehicle consisting essentially of: (i) 30 to 80 weight percent dibutyl sebacate and (ii) 20 to 70 weight percent oleic acid; and (b) 1-15 weight percent colorant.
Claim 3
Dependent Claim
21 words
The ink composition of claim 1 wherein said dibutyl sebacate comprises between about 40 to 65 weight percent of said ink.
Claim 4
Dependent Claim
18 words
The ink composition of claim 1 wherein said dibutyl sebacate comprises about 60 weight percent of said ink.
Claim 5
Dependent Claim
12 words
The ink composition of claim 1 wherein said colorant comprises nigrosine base.
Claim 6
Dependent Claim
12 words
The ink composition of claim 1 wherein said colorant comprises typophor black.
Claim 7
Dependent Claim
17 words
The ink composition of claim 1 wherein said colorant comprises about 12 weight percent of said ink.
Claim 8
Dependent Claim
22 words
The ink of claim 1 wherein said ink further comprises up to 30 weight percent of benzyl ether as an ink additive.
Claim 9
Dependent Claim
18 words
The ink of claim 1 wherein said ink comprises up to 30 weight percent of an ink additive.
Claim 10
Dependent Claim
17 words
The ink of claim 8 wherein said ink additive comprises about 20 weight percent of benzyl ether.
Claim 11
Independent Claim
78 words
A method of ink jet printing using a drop on demand jetting apparatus comprising: (a) providing an ink jet ink comprising: (i) 85-99 weight percent of a vehicle consisting essentially of 30-80 weight percent dibutyl sebacate and 20 to 70 weight percent oleic acid; and (ii)1-15 weight percent colorant; (b) elevating the temperature of that ink to reduce its viscosity to less than 15 centipoises; and (c) jetting said ink from said apparatus to form indicia or substrate.
Claim 12
Independent Claim
78 words
A method of ink jet printing using a drop on demand jetting apparatus comprising: (a) providing an ink jet ink comprising: (i) 85-99 weight percent of a vehicle consisting essentially of 30-80 weight percent dibutyl sebacate and 20 to 70 weight percent oleic acid; and (ii)1-15 weight percent colorant; (b) elevating the temperature of that ink to reduce its viscosity to less than 15 centipoises; and (c) jetting said ink from said apparatus to form indicia or substrate.
Claim 13
Dependent Claim
14 words
The method of claim 10 wherein said colorant is selected to be infrared readable.
Claim 14
Dependent Claim
11 words
The method of claim 11 wherein said indica are bar codes.
Claim 15
Dependent Claim
17 words
The method of claim 12 wherein said substrate is selected to be a barium sulfate coated substrate.
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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) | 1992-04-17 | 1992-10-17 | 1993-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-17 | 1996-10-17 | 1997-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-17 | 2000-10-17 | 2001-04-18 | $7700.00 | Window Closed / Lapsed |