US4415910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ink jet transducer
Assignee: NCR Voyix Corp
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Filing: 1982-01-25
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Granted: 1983-11-15
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Expires: 2002-01-25
Abstract
Abstract An ink jet transducer operates on pressurized ink which is released on demand by action of an electromagnet operating to unseat a magnetic ball seated on the nozzle. Ink droplets are formed and are caused to travel in a path along the nozzle axis to impact on record media.
Inventors
- 👤 John W. Reece
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:27
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/015; B41J2/04
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
75 words
An ink jet printing element comprising a housing having a nozzle at one end thereof, means for supplying ink into said housing, valve means including a sloping seat portion formed at one end of the nozzle and a valve member operably associated with the seat portion, and electromagnetic means including opposed magnetic pole portions positioned for actuating said valve member to open said valve means and allow ejection of droplets of ink from said nozzle.
Claim 2
Dependent Claim
75 words
An ink jet printing element comprising a housing having a nozzle at one end thereof, means for supplying ink into said housing, valve means including a sloping seat portion formed at one end of the nozzle and a valve member operably associated with the seat portion, and electromagnetic means including opposed magnetic pole portions positioned for actuating said valve member to open said valve means and allow ejection of droplets of ink from said nozzle.
Claim 3
Dependent Claim
16 words
The printing element of claim 1 including spring means biasing said valve member at said nozzle.
Claim 4
Dependent Claim
16 words
The printing element of claim 1 wherein said valve member comprises a ball of magnetic material.
Claim 5
Dependent Claim
92 words
An ink jet transducer comprising a body having an inlet port and a nozzle, valve means including a sloping seat portion formed at one end of the nozzle and a valve member within said body and operably associated with the seat portion, means for supplying ink under pressure into said body, and electromagnetic means including a pair of opposed magnetic pole portions positioned for actuating said valve member against the pressure of the ink to open said valve means and permit the release of droplets of ink on demand from said nozzle.
Claim 6
Dependent Claim
92 words
An ink jet transducer comprising a body having an inlet port and a nozzle, valve means including a sloping seat portion formed at one end of the nozzle and a valve member within said body and operably associated with the seat portion, means for supplying ink under pressure into said body, and electromagnetic means including a pair of opposed magnetic pole portions positioned for actuating said valve member against the pressure of the ink to open said valve means and permit the release of droplets of ink on demand from said nozzle.
Claim 7
Dependent Claim
15 words
The transducer of claim 4 including spring means biasing said valve member at said nozzle.
Claim 8
Dependent Claim
15 words
The transducer of claim 4 wherein said valve member comprises a ball of magnetic material.
Claim 9
Dependent Claim
21 words
The transducer of claim 4 wherein the electromagnetic means comprises a magnetic frame and a coil for actuating said valve member.
References Cited (Backward Citations)
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Cited
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Cited
US2951894A
Cited
US3116964A
Cited
US3656169A
Cited
US3731880A
Cited
US4215350A
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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) | 1986-11-14 | 1987-05-16 | 1987-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-14 | 1991-05-16 | 1991-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-14 | 1995-05-16 | 1995-11-15 | $7700.00 | Window Closed / Lapsed |