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US4418356A
Expired / Lapsed
US
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Ink jet print head
Assignee: NCR Voyix Corp
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Filing: 1981-09-23
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Granted: 1983-11-29
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Expires: 2001-09-23
Abstract
Abstract A cluster or array of ink jet printing elements consisting of two or more inclined rows of tubular transducers are folded or indexed in an interleaf pattern to maintain the nozzles of the transducers in parallel manner for use in a compact print head.
Inventors
- 👤 John W. Reece
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:56
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/135; B41J2/145; B41J2/155
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
77 words
An ink jet print head comprising a housing, means supplying ink into said housing, a chamber within the housing for receiving ink, and a plurality of electrically pulsed ink droplet drive elements positioned to receive ink from the chamber and disposed in substantially parallel manner and arranged in inclined rows within the housing, the drive elements having nozzles mutually parallel and operable to cause ink to be ejected in parallel manner from the housing in droplet form.
Claim 2
Dependent Claim
77 words
An ink jet print head comprising a housing, means supplying ink into said housing, a chamber within the housing for receiving ink, and a plurality of electrically pulsed ink droplet drive elements positioned to receive ink from the chamber and disposed in substantially parallel manner and arranged in inclined rows within the housing, the drive elements having nozzles mutually parallel and operable to cause ink to be ejected in parallel manner from the housing in droplet form.
Claim 3
Dependent Claim
30 words
The print head of claim 1 wherein the drive elements include tubular members having a reduced portion at one end thereof to provide a nozzle for ejection of ink droplets.
Claim 4
Dependent Claim
26 words
The print head of claim 1 wherein said drive elements comprise tubular elements arranged in two inclined rows to effect the printing of dot matrix characters.
Claim 5
Dependent Claim
28 words
The print head of claim 1 wherein said drive elements include tubular elements arranged in three inclined rows to effect the printing of high resolution dot matrix characters.
Claim 6
Dependent Claim
87 words
A compact print head for demand printing of droplets of ink comprising a housing, means supplying ink into said housing, a chamber within the housing for receiving ink, and a plurality of electrically pulsable transducer elements positioned in substantially parallel fashion and placed in slanted rows within the housing, the transducer elements being connected with the chamber for receiving ink therefrom and having nozzles mutually parallel and operable to cause the droplets of ink to be ejected in parallel manner onto record media in dot matrix manner.
Claim 7
Dependent Claim
87 words
A compact print head for demand printing of droplets of ink comprising a housing, means supplying ink into said housing, a chamber within the housing for receiving ink, and a plurality of electrically pulsable transducer elements positioned in substantially parallel fashion and placed in slanted rows within the housing, the transducer elements being connected with the chamber for receiving ink therefrom and having nozzles mutually parallel and operable to cause the droplets of ink to be ejected in parallel manner onto record media in dot matrix manner.
Claim 8
Dependent Claim
32 words
The print head of claim 5 wherein said transducer elements comprise tubular members having a reduced diameter at one end thereof to provide an orifice for ejection of the droplets of ink.
Claim 9
Dependent Claim
26 words
The print head of claim 5 wherein said transducer elements are tubular elements arranged in two slanted rows to effect the printing of dot matrix characters.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-11-28 | 1987-05-30 | 1987-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-28 | 1991-05-30 | 1991-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-28 | 1995-05-30 | 1995-11-29 | $7700.00 | Window Closed / Lapsed |