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US4390886A
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Ink jet printing machine
Assignee: Xerox Corp
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Filing: 1981-09-25
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Granted: 1983-06-28
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Expires: 2001-09-25
Abstract
Abstract An ink jet printing machine in which adjacent nozzles are isolated from one another to prevent energization of a nozzle other than a selected nozzle.
Inventors
- 👤 S. Bertil Sultan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:07
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/135; B41J2/145
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
146 words
An ink jet printing machine comprising: an array of nozzles; a plurality of channels for coupling a supply of writing fluid to each nozzle of said array; a plurality of transducers, each of said transducers positioned closely adjacent an associated channel, so that activation of the transducer that is adjacent its associated channel ejects a droplet of writing fluid from the nozzle coupled to that channel; one each of the nozzles, channels and transducers being supported in a housing of their own which, when abutted against other similar housings, forms said array of nozzles; means for activating said transducers in the housings; and each said housing having recessed portions which define slots which are spaced between adjacent transducers and extending between adjacent channels to isolate each transducer and associated channel from the transducers and their associated channels in the other housings with which said housing abuts.
Claim 2
Dependent Claim
146 words
An ink jet printing machine comprising: an array of nozzles; a plurality of channels for coupling a supply of writing fluid to each nozzle of said array; a plurality of transducers, each of said transducers positioned closely adjacent an associated channel, so that activation of the transducer that is adjacent its associated channel ejects a droplet of writing fluid from the nozzle coupled to that channel; one each of the nozzles, channels and transducers being supported in a housing of their own which, when abutted against other similar housings, forms said array of nozzles; means for activating said transducers in the housings; and each said housing having recessed portions which define slots which are spaced between adjacent transducers and extending between adjacent channels to isolate each transducer and associated channel from the transducers and their associated channels in the other housings with which said housing abuts.
Claim 3
Dependent Claim
15 words
The ink jet printing machine of claim 1 where said slots are filled with air.
Claim 4
Dependent Claim
16 words
The ink jet printing machine of claim 1 where said slots are filled with a liquid.
Claim 5
Dependent Claim
14 words
The ink jet printing machine of claim 1 wherein said channels are compressible tubes.
Claim 6
Dependent Claim
45 words
The ink jet printing machine according to claim 1, wherein, at least one of the recessed portions of adjacent housings are aligned with one another so that the combined recessed portions of both adjacent housings define the slot between the transducers and their associated channels.
Claim 7
Dependent Claim
22 words
The ink jet printing machine according to claim 5, wherein each of the recessed portions of said housings have substantially equal volumes.
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) | 1986-06-27 | 1986-12-27 | 1987-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-06-27 | 1990-12-27 | 1991-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-06-27 | 1994-12-27 | 1995-06-28 | $7700.00 | Window Closed / Lapsed |