Patent US2413462A successfully refreshed from Google Patents.
US4479982A
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US
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Method for producing a lyophobic layer
Assignee: INKJET SYSTEMS & Co KG GmbH
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Filing: 1983-04-18
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Granted: 1984-10-30
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Expires: 2003-04-18
Abstract
Abstract A lyophobic layer is produced on surfaces of a jet-orifice carrier of a recording device functioning with fluid droplets by generating a uniform and pore-free layer on surfaces of the carrier with the application of high frequency/low pressure glow discharge using a gaseous organic compound, such as octofluorocyclobutane.
Inventors
- 👤 Kenth Nilsson
- 👤 Rolf Schulte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:28
CPC Classifications
B; B05; B05D; B05D1/00; B05D1/62; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/135; B41J2/16; B41J2/1606
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
118 words
A method of producing a lyophobic layer on surfaces of a jet-orifice carrier of a recording device functioning with fluid droplets, comprising: positioning at least one jet-orifice carrier in an operational pressure-controllable glow discharge chamber having a means for producing a glow discharge therein, said means being connected to a controllable high-frequency energy source, said chamber being connected to a controllable source of a gaseous organic compound; feeding said gaseous organic compound into said chamber; and providing a high frequency energy in the range from about 0.1 to 30 megahertz to said means so that a high frequency/low pressure glow discharge occurs within said chamber and a lyophobic layer is directly produced on surfaces of said jet-orifice carrier.
Claim 2
Independent Claim
118 words
A method of producing a lyophobic layer on surfaces of a jet-orifice carrier of a recording device functioning with fluid droplets, comprising: positioning at least one jet-orifice carrier in an operational pressure-controllable glow discharge chamber having a means for producing a glow discharge therein, said means being connected to a controllable high-frequency energy source, said chamber being connected to a controllable source of a gaseous organic compound; feeding said gaseous organic compound into said chamber; and providing a high frequency energy in the range from about 0.1 to 30 megahertz to said means so that a high frequency/low pressure glow discharge occurs within said chamber and a lyophobic layer is directly produced on surfaces of said jet-orifice carrier.
Claim 3
Dependent Claim
17 words
A method as defined in claim 1 wherein said gaseous organic compound is a fluorine-containing organic compound.
Claim 4
Dependent Claim
16 words
A method as defined in claim 1 wherein said gaseous organic compound is a perfluoro-carbon compound.
Claim 5
Dependent Claim
25 words
A method as defined in claim 1 wherein said gaseous organic compound is selected from the group consisting of tetrafluoroethylene, hexafluoropropylene, perfluorobutylene, octofluorocyclobutane and perfluorocyclohexane.
Claim 6
Dependent Claim
41 words
A method as defined in claim 1 wherein said gaseous organic compound is fed into said discharge chamber at a gas pressure in the range of about 10 -2 to 10 mbar and said pressure is maintained during the glow discharge.
Claim 7
Dependent Claim
27 words
In a method as defined in claim 1 where the produced lyophobic layer on surfaces of the jet-orifice carrier has a uniform thickness of about 0.7 μum.
References Cited (Backward Citations)
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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) | 1987-10-30 | 1988-04-30 | 1988-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-30 | 1992-04-30 | 1992-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-30 | 1996-04-30 | 1996-10-30 | $7700.00 | Window Closed / Lapsed |