US5118350A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dye-set for improved color quality for ink-jet printers
Assignee: HP Inc
•
Filing: 1991-07-29
•
Granted: 1992-06-02
•
Expires: 2011-07-29
Abstract
Abstract A set of dyes is provided for use in vehicles employing about 5 to 11% of glycols and/or glycol ethers and the balance water. The dye-set comprises about 2 to 3% of hydrolyzed-Reactive Red 180, about 0.3 to 1% Acid Red 52, with the ratio of hydrolyzed-RR180:AR52 ranging from about 2:1 to 5:1, about 1.75 to 2.75% of Acid Yellow 23, and about 1.75 to 2.5% of Acid Blue 9. The particular dye-set provides bright, saturated colors for ink-jet application for not only special coated paper, but also "plain" office papers and transparencies.
Inventors
- 👤 Keshava A. Prasad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:51
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/40
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
122 words
An ink-jet ink-set comprising magenta ink, yellow ink, and cyan ink for use with ink-jet printers, each ink comprising a vehicle and at least one dye: (a) said vehicle containing about 5 to 11 wt % of at least one member selected from the group consisting of glycols and glycol ethers and the balance water; (b) said magenta ink consisting essentially of about 2 to 3 wt % of hydrolyzed-Reactive Red 180 dye and about 0.3 to 1 wt % of Acid Red 52 dye; (c) said yellow ink consisting essentially of about 1.75 to 2.75 wt % of Acid Yellow 23 dye; and (d) said cyan ink consisting essentially of about 1.75 to 2.5 wt % of Acid Blue 9 dye.
Claim 2
Dependent Claim
122 words
An ink-jet ink-set comprising magenta ink, yellow ink, and cyan ink for use with ink-jet printers, each ink comprising a vehicle and at least one dye: (a) said vehicle containing about 5 to 11 wt % of at least one member selected from the group consisting of glycols and glycol ethers and the balance water; (b) said magenta ink consisting essentially of about 2 to 3 wt % of hydrolyzed-Reactive Red 180 dye and about 0.3 to 1 wt % of Acid Red 52 dye; (c) said yellow ink consisting essentially of about 1.75 to 2.75 wt % of Acid Yellow 23 dye; and (d) said cyan ink consisting essentially of about 1.75 to 2.5 wt % of Acid Blue 9 dye.
Claim 3
Dependent Claim
27 words
The ink-set of claim 1 wherein said mixture of hydrolyzed-Reactive Red 180 and Acid Red 52 dyes ranges in ratio from about 2:1 to 5:1 of hydrolyzed-RRl80:AR52.
Claim 4
Dependent Claim
39 words
The ink-set of claim 2 wherein said ratio is about 4:1 and the concentration of said hydrolyzed-Reactive Red 180 dye is about 2.2 wt % and the concentration of said Acid Red 52 dye is about 0.6 wt %.
Claim 5
Dependent Claim
18 words
The ink-set of claim 1 wherein the concentration of said Acid Yellow dye is about 2 wt %.
Claim 6
Dependent Claim
19 words
The ink-set of claim 1 wherein the concentration of said Acid Blue 9 dye is about 2 wt %.
Claim 7
Dependent Claim
26 words
The ink-set of claim 1 further including about 0.1 to 1 wt % of a surfactant and about 0.1 to 0.4 wt % of a biocide.
Claim 8
Dependent Claim
37 words
The ink-set of claim 6 wherein said glycol is selected from the group consisting of diethylene glycol and dipropylene glycol and said glycol ether is selected from the group consisting of 2-(2-butoxyethoxy)ethanol and triethylene glycol butyl ether.
Claim 9
Dependent Claim
28 words
The ink-set of claim 7 wherein said vehicle consists essentially of about 8 wt % of 2-(2-butoxyethoxy)ethanol, about 0.3 wt % of said biocide, and the balance water.
Claim 10
Dependent Claim
26 words
An improved ink-jet dye-set for ink-jet printing including (a) a mixture of hydrolyzed-Reactive Red 180 and Acid Red 52 dyes and (b) Acid Yellow 23 dye.
Claim 11
Dependent Claim
26 words
An improved ink-jet dye-set for ink-jet printing including (a) a mixture of hydrolyzed-Reactive Red 180 and Acid Red 52 dyes and (b) Acid Yellow 23 dye.
Claim 12
Dependent Claim
28 words
The dye-set of claim 9 wherein said mixture of hydrolyzed-Reactive Red 180 and Acid Red 52 dyes ranges in a ratio from about 2:1 to 5:1 of hydrolyzed-RRl80:AR52.
Claim 13
Dependent Claim
11 words
The dye-set of claim 10 wherein said ratio is about 4:1.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-06-02 | 1995-12-02 | 1996-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-06-02 | 1999-12-02 | 2000-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-06-02 | 2003-12-02 | 2004-06-02 | $7700.00 | Window Closed / Lapsed |