US4413268A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Jet nozzle for an ink jet printer
Assignee: US Philips Corp
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Filing: 1981-12-09
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Granted: 1983-11-01
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Expires: 2001-12-09
Abstract
Abstract In jet nozle printers in which the ink droplets are ejected individually from one or more jet nozzles for a matrix print, an orifice to produce a uniform, axially proceeding ejection of ink droplets in the nozzle direction. The jet nozzles are shaped such that the orifice is provided with a sharp edge, both in its interior region and also closely around this region, the jet nozzle brim thus formed radially around the orifice having a uniform width of not more than 20 μm. The cross-section of the wall surrounding the jet nozzle orifice forms an acute-angled triangle, the apex forming the jet nozzle brim.
Inventors
- 👤 Horst Bentin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:27
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/135; B41J2/14; B41J2/1433; B41J2002/14475
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
70 words
A jet nozzle plate for an ink jet printer, comprising a plurality of substantially cylindrical jet nozzles each having a discharge orifice, the plane of the orifice being perpendicular to the longitudinal axis of the jet nozzle, the orifice being surrounded by a nozzle brim having sharp edges, the width of the nozzle brim being between 0 and 20 um, a trough (6) being provided around the jet nozzle brim.
Claim 2
Dependent Claim
70 words
A jet nozzle plate for an ink jet printer, comprising a plurality of substantially cylindrical jet nozzles each having a discharge orifice, the plane of the orifice being perpendicular to the longitudinal axis of the jet nozzle, the orifice being surrounded by a nozzle brim having sharp edges, the width of the nozzle brim being between 0 and 20 um, a trough (6) being provided around the jet nozzle brim.
Claim 3
Dependent Claim
34 words
A jet nozzle plate as claimed in claim 1, characterized in that the wall between the orifice and the trough has in cross-section an acute-angled triangle whose apex forms the jet nozzle brim (3).
Claim 4
Dependent Claim
77 words
A jet nozzle plate as claimed in claim 1, characterized in that the orifice (4) is in a plane with the surface area of the adjacent jet nozzle plate (1) surrounding it and that the jet nozzle brim (3) consists of a material which is easily wettable by the liquid ink and that the further surface are of the jet nozzle plate (1) consists of a material which is far from easily wettable by the liquid ink.
Claim 5
Dependent Claim
27 words
A jet nozzle plate as claimed in any one of claims 1 to 3, characterized in that the orifice (4) has a diameter of approximately 50 um.
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) | 1986-10-31 | 1987-05-02 | 1987-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-31 | 1991-05-02 | 1991-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-31 | 1995-05-02 | 1995-11-01 | $7700.00 | Window Closed / Lapsed |