US4389658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ink jet array
Assignee: Xerox Corp
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Filing: 1982-03-31
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Granted: 1983-06-21
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Expires: 2002-03-31
Abstract
Abstract A pulsed liquid droplet ejecting apparatus array wherein rectangular piezoelectric transducers are arranged abaxially over ink-containing chambers. An edge of each transducer is fixed against a reaction block so that on excitation of the transducers, the transducers extend into the ink chamber ejecting a droplet. The ink chamber is formed in a relatively rigid material to increase the efficiency of utilization of the drive pulse.
Inventors
- 👤 Theodore P. Perna
- 👤 Curt R. Raschke
- 👤 William L. Baker, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:33
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/135; B41J2/14; B41J2/14201
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
A fluid impulse jet in which a rectangular transducer is arranged abaxially to a fluid channel wherein said fluid channel is formed in a relatively rigid material, and the drive pulse from said transducer is transmitted through said relatively rigid material to said fluid channel.
Claim 2
Dependent Claim
45 words
A fluid impulse jet in which a rectangular transducer is arranged abaxially to a fluid channel wherein said fluid channel is formed in a relatively rigid material, and the drive pulse from said transducer is transmitted through said relatively rigid material to said fluid channel.
References Cited (Backward Citations)
US4243995A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-06-20 | 1986-12-20 | 1987-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-06-20 | 1990-12-20 | 1991-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-06-20 | 1994-12-20 | 1995-06-21 | $7700.00 | Window Closed / Lapsed |