EP0595523B1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Black to color bleed control in thermal ink-jet printing
Assignee: HP Inc
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Filing: 1993-10-18
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Granted: 1997-02-19
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Expires: 2013-10-18
Abstract
No abstract record available.
Inventors
- 👤 Palitha Wickramanayake
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 23:18
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/40
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
54 words
A set of ink-jet inks for thermal ink-jet printing, comprising black, yellow, magenta, and cyan inks, wherein said yellow, magenta, and cyan inks consist essentially of water-soluble dyes dissolved in aqueous ink vehicles, and wherein said black ink consists essentially of at least one water-insoluble dye which is microemulsified with a surfactant and water.
Claim 2
Dependent Claim
117 words
The set of ink-jet inks of claim 1 wherein: (a) said black ink comprises: (1) 1 to 35 wt% of at least two surfactants, comprising 0.5 to 15 wt% of at least one surfactant and 0.5 to 20 wt% of at least one cosurfactant, (2) from 0 to 20 wt% of at least one cosolvent, (3) 0.1 to 6 wt% of at least one water-insoluble black dye, (4) 0.5 to 20 wt% of an oil, and (5) the balance water; and (b) wherein each of said color inks comprises: (1) from 1 to 20 wt% of at least one cosolvent, (2) from 0.1 to 6 wt% of at least one water-soluble dye, and (3) the balance water.
Claim 3
Dependent Claim
18 words
The set of ink-jet inks of claim 2 wherein said at least one surfactant is an amine oxide.
Claim 4
Dependent Claim
39 words
The set of ink-jet inks of claim 2 wherein said at least one cosurfactant is selected from the group consisting of lactams, glycol esters, mono and di glycol ethers, diethylene glycol ethers, long chain alcohols, and acetylenic polyethylene oxides.
Claim 5
Dependent Claim
46 words
The set of ink-jet inks of Claim 2 wherein said oil is selected from the group consisting of non-toxic aromatics, straight and simple branched hydrocarbons having from 8 to 22 carbon atoms, alkenes having up to three carbon-carbon double bonds, and mono and di glycol ethers.
Claim 6
Dependent Claim
36 words
The set of ink-jet inks of Claim 2 wherein said at least one water-insoluble dye in said black ink is selected from the group consisting of solvent black dyes, vat black dyes, and mordant black dyes.
Claim 7
Dependent Claim
36 words
The set of inks of Claim 2 wherein said at least one cosolvent is selected from the group consisting of glycols, diethylene glycol ethers, diols, and sulfolane, esters, ketones, lactones, lactams, and glycerols and their derivatives.
Claim 8
Dependent Claim
29 words
A method of reducing bleed between black and color inks in thermal ink-jet printers comprising printing onto a print medium from the set of ink-jet inks of Claim 1.
References Cited (Backward Citations)
No citation records indexed.
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