US4819014A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ink jet recording head
Assignee: Fuji Electric Co Ltd
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Filing: 1988-04-21
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Granted: 1989-04-04
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Expires: 2008-04-21
Abstract
Abstract An ink jet recording head in which the ink in an ink cavity is jetted in the form of a droplet from an ink nozzle by utilizing a piezo-electric effect. The recording head includes a piezo-electric plate made of piezo-electric material and having a plurality of elongated ink cavities formed therein, and a cover plate fixedly placed on the piezo-electric plate. The cover plate has a plurality of ink supplying inlets in the region of the nozzles.
Inventors
- 👤 Takeshi Yasuhara
- 👤 Makoto Nishimura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:02
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/135; B41J2/16; B41J2/1621; B41J2/1623; B41J2/14; B41J2/14201; B41J2/14209; B41J2/1607; B41J2/1609; B41J2/1632; B41J2002/14225
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
124 words
An ink jet recording head in which the ink in an ink cavity is jetted in the form of a droplet from an ink nozzle by utilizing a piezo-electric effect, comprising: a piezo-electric plate of piezo-electric material which has a plurality of elongated ink cavities formed in a surface of said piezo-electric plate and a plurality of ink nozzles formed in said surface in such a manner that said ink nozzles are located on one side, in the longitudinal direction, of said ink cavities and are communicated with said ink cavities, respectively; and a cover plate fixedly provided on said surface of said piezo-electric plate, said cover plate having a plurality of ink supplying inlets on the side where said ink nozzles are provided.
Claim 2
Dependent Claim
124 words
An ink jet recording head in which the ink in an ink cavity is jetted in the form of a droplet from an ink nozzle by utilizing a piezo-electric effect, comprising: a piezo-electric plate of piezo-electric material which has a plurality of elongated ink cavities formed in a surface of said piezo-electric plate and a plurality of ink nozzles formed in said surface in such a manner that said ink nozzles are located on one side, in the longitudinal direction, of said ink cavities and are communicated with said ink cavities, respectively; and a cover plate fixedly provided on said surface of said piezo-electric plate, said cover plate having a plurality of ink supplying inlets on the side where said ink nozzles are provided.
Claim 3
Dependent Claim
23 words
An ink jet recording head as claimed in claim 1, wherein said ink supplying inlets are provided in the region of said nozzles.
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) | 1992-04-03 | 1992-10-03 | 1993-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-03 | 1996-10-03 | 1997-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-03 | 2000-10-03 | 2001-04-04 | $7700.00 | Window Closed / Lapsed |