Patent US5223028A successfully refreshed from Google Patents.
US5223028A
Expired / Lapsed
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Waterfast aqueous inks
Assignee: Lexmark International Inc
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Filing: 1991-08-19
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Granted: 1993-06-29
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Expires: 2011-08-19
Abstract
Abstract A waterfast ink having 3.0% Food Black 2, 2.5% highly hydroxyethylated polyethyleneimine, 10.0% ammonium benzoate, and the balance water. The invention appears to function upon loss of water after printing by a polar neutralizing between the dye and the polyimine, which results in an affinity of the dye to paper. It is applicable to any dye having anionic solubilizing groups but not having quaternary ammonium and to any ammonium salt.
Inventors
- 👤 Rodney O. Aulick
- 👤 Bradley L. Beach
- 👤 Terence E. Franey
- 👤 James M. Mrvos
- 👤 Ann M. Piekunka
- 👤 Jerry F. Stone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:04
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
85 words
A liquid ink composition comprising a dye solubilizing groups consisting essentially of anionic groups and not having a quaternary ammonium group, a polar solubilizing liquid providing a liquid vehicle for said dye in said ink, a polyethyleneimine hydroxy alkyl substituted at about 95% or greater of the available imine nitrogens, and an ammonium salt in sufficient amount to act upon loss of salt polar liquid with said dye and said polyethyleneimine to provide waterfastness of said dye of at least substantially neutral or acidic water.
Claim 2
Dependent Claim
85 words
A liquid ink composition comprising a dye solubilizing groups consisting essentially of anionic groups and not having a quaternary ammonium group, a polar solubilizing liquid providing a liquid vehicle for said dye in said ink, a polyethyleneimine hydroxy alkyl substituted at about 95% or greater of the available imine nitrogens, and an ammonium salt in sufficient amount to act upon loss of salt polar liquid with said dye and said polyethyleneimine to provide waterfastness of said dye of at least substantially neutral or acidic water.
Claim 3
Dependent Claim
18 words
The ink of claim 1 in which said ammonium salt is ammonium benzoate, ammonium chloride, or ammonium acetate.
Claim 4
Dependent Claim
13 words
The ink of claim 2 in which said ammonium salt is ammonium benzoate.
Claim 5
Dependent Claim
11 words
The ink of claim 3 in which said polyethyleneimine is hydroxyethylated.
Claim 6
Dependent Claim
11 words
The ink of claim 1 in which said polyethyleneimine is hydroxyethylated.
Claim 7
Dependent Claim
11 words
The ink of claim 2 in which said polyethyleneimine is hydroxyethylated.
Claim 8
Dependent Claim
13 words
The ink of claim 6 in which said dye is Food Black 2.
Claim 9
Dependent Claim
13 words
The ink of claim 4 in which said dye is Food Black 2.
Claim 10
Dependent Claim
50 words
A liquid ink composition for waterfast printing comprising a dye having solubilizing groups consisting essentially of anionic groups and not having a quaternary ammonium group, a polyethyleneimine hydroxy alkyl substituted at about 95% or greater of available imine nitrogens, an ammonium salt, and water, as a vehicle for said dye.
Claim 11
Dependent Claim
50 words
A liquid ink composition for waterfast printing comprising a dye having solubilizing groups consisting essentially of anionic groups and not having a quaternary ammonium group, a polyethyleneimine hydroxy alkyl substituted at about 95% or greater of available imine nitrogens, an ammonium salt, and water, as a vehicle for said dye.
Claim 12
Dependent Claim
28 words
The ink of claim 9 in which said ammonium salt is ammonium benzoate, ammonium chloride, or ammonium acetate of more than 2% percent by weight of said ink.
Claim 13
Dependent Claim
13 words
The ink of claim 10 in which salt ammonium salt is ammonium benzoate.
Claim 14
Dependent Claim
20 words
The ink of claim 11 in which said polyethyleneimine is hydroxyethylated and is about 2.5% by weight of said ink.
Claim 15
Dependent Claim
11 words
The ink of claim 9 in which said polyethyleneimine is hydroxyethylated.
Claim 16
Dependent Claim
20 words
The ink of claim 10 in which said polyethyleneimine is hydroxyethylated and is about 2.5% by weight of said ink.
Claim 17
Dependent Claim
20 words
The ink of claim 14 in which said dye is Food . Black 2 of about 3% percent by weight.
Claim 18
Dependent Claim
18 words
The ink of claim 11 in which said dye is Food Black 2 of about 3% by weight.
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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) | 1996-06-28 | 1996-12-28 | 1997-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-06-28 | 2000-12-28 | 2001-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-06-28 | 2004-12-28 | 2005-06-29 | $7700.00 | Window Closed / Lapsed |