US4446469A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ink jet printer array
Assignee: Xerox Corp
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Filing: 1982-03-31
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Granted: 1984-05-01
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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 by electrical pulses, the transducers extend into the ink chamber ejecting a drop. An improved method for rigidly mounting the piezoelectric transducers to the reaction block for improved efficiency is disclosed. Further, the design includes an improved mechanical crosstalk reducing member comprising a rigid member containing a void.
Inventors
- 👤 Theodore P. Perna
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:23
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
78 words
A pulsed liquid droplet ejecting apparatus array comprising: (a) at least two jets, each of said jets comprising a rectangular transducer arranged abaxially to a channel for containing a fluid; (b) a rigid member comprising a rigid member having walls in spaced relationship located between said jets for reducing mechanical crosstalk between said jets; and wherein a section of said transducer is held in a reaction member, and said section of said transducer is isolated from transducer activation.
Claim 2
Dependent Claim
78 words
A pulsed liquid droplet ejecting apparatus array comprising: (a) at least two jets, each of said jets comprising a rectangular transducer arranged abaxially to a channel for containing a fluid; (b) a rigid member comprising a rigid member having walls in spaced relationship located between said jets for reducing mechanical crosstalk between said jets; and wherein a section of said transducer is held in a reaction member, and said section of said transducer is isolated from transducer activation.
References Cited (Backward Citations)
US4243995A
Cited
US4377814A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-05-01 | 1987-10-31 | 1988-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-01 | 1991-10-31 | 1992-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-01 | 1995-10-31 | 1996-05-01 | $7700.00 | Window Closed / Lapsed |