EP0121623A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Anti-wetting in fluid nozzles
Assignee: HP Inc
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Filing: 1983-10-14
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Granted: —
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Expires: 2003-10-14
Abstract
Abstract A novel ionic surface preparation for nozzles used in spraying fluid droplets such as are used in ink jet printers is disclosed. In conjunction with an oppositely charged ionic anti-wetting agent dissolved in the sprayed fluid, the new surface preparation reliably reduces the wetting of the nozzle surfaces, thereby facilitating the production of more uniform and predictable droplets.
Inventors
- 👤 Young Soo You
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 06:30
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/135; B41J2/16; B41J2/1606; Y; Y10; Y10S; Y10S239/00; Y10S239/19
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
30 words
A nozzle having a surface for use in contact with a fluid, the nozzle being characterized by: ions embedded in at least a part of the surface of said nozzle.
Claim 2
Dependent Claim
30 words
A nozzle having a surface for use in contact with a fluid, the nozzle being characterized by: ions embedded in at least a part of the surface of said nozzle.
Claim 3
Dependent Claim
18 words
A nozzle according to claim 1 characterized in that the surface is composed substantially of an oxide material.
Claim 4
Dependent Claim
13 words
A nozzle according to claim 2, characterized in that the ions are cations.
Claim 5
Dependent Claim
18 words
A nozzle according to claim 3, characterized in that the cations are composed substantially of a P-type material.
Claim 6
Dependent Claim
13 words
A nozzle according to claim 2, characterized in that the ions are anions
Claim 7
Dependent Claim
17 words
A nozzle according to claim 5, characterized in that the anions are composed substantially of N-type material.
Claim 8
Dependent Claim
17 words
A nozzle according to claim 1, characterized in that the surface is composed substantially of a metal.
Claim 9
Dependent Claim
13 words
A nozzle according to claim 7, characterized in that the metal is nickel.
Claim 10
Dependent Claim
13 words
A nozzle according to claim 7, characterized in that the ions are cations.
Claim 11
Dependent Claim
13 words
A nozzle according to claim 7, characterized in that the ions are anions
Claim 12
Dependent Claim
32 words
A fluid to be sprayed from a nozzle having a surface in contact with the fluid, the fluid being characterized by: a solvent; and an ionic anti-wetting compound dissolved in the solvent.
Claim 13
Dependent Claim
32 words
A fluid to be sprayed from a nozzle having a surface in contact with the fluid, the fluid being characterized by: a solvent; and an ionic anti-wetting compound dissolved in the solvent.
Claim 14
Dependent Claim
40 words
A fluid according to claim 11 characterized in that the solvent is water, and the ionic anti-wetting compound is in such a concentration so as to maintain the surface tension between the fluid and the surface greater than 45 dynes/cm.
Claim 15
Independent Claim
80 words
A system for spraying a fluid from a nozzle having a surface in contact with said fluid, comprising: ions of a first type embedded in at least a portion of the surface of said nozzle; and a chemically specific adsorbing anti-wetting compound having ions of a second type dissolved in the fluid; so that the portion of the surface of the nozzle embedded with ions of the first type will selectively adsorb the anti-wetting compound from the fluid being sprayed.
Claim 16
Independent Claim
80 words
A system for spraying a fluid from a nozzle having a surface in contact with said fluid, comprising: ions of a first type embedded in at least a portion of the surface of said nozzle; and a chemically specific adsorbing anti-wetting compound having ions of a second type dissolved in the fluid; so that the portion of the surface of the nozzle embedded with ions of the first type will selectively adsorb the anti-wetting compound from the fluid being sprayed.
Claim 17
Dependent Claim
24 words
A system as in claim 13 wherein the ions of the first type are cations, and the ions of the second type are anions.
Claim 18
Dependent Claim
26 words
A system according to claim 13 characterized in that the ions of the first type are anions, and the ions of the second type are cations.
Claim 19
Dependent Claim
30 words
A system according to claim 13 characterized in that the ions of the first type are provided by substantially P-type material, and the ions of the second type are anions.
Claim 20
Dependent Claim
30 words
A system according to claim 13 characterized in that the ions of the first type are provided by substantially N-type material, and the ions of the second type are cations.
References Cited (Backward Citations)
No citation records indexed.
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