Patent US3776461A successfully refreshed from Google Patents.
US3776461A
Expired / Lapsed
US
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Nozzle device for ink jet printing equipments
Assignee: Casio Computer Co Ltd
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Filing: 1971-10-04
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Granted: 1973-12-04
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Expires: 1991-10-04
Abstract
Abstract A nozzle device for ink jet printing equipments having a tube whose open end constitutes an ink nozzle exit wherein there is provided a protective member in which there is formed an extremely narrow slit extending horizontally inward from its end face, said slitted member being fitted around the periphery of the tube with the nozzle portion thereof exposed so as to allow the ink excessively flowing out of the exit end of the nozzle to be sucked into the slit by the capillary suction afforded thereby.
Inventors
- 👤 T Kashio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:54
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/17; B41J2/20
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
106 words
A nozzle device for ink jet printing equip-ment comprising: a nozzle tube for jetting out ink droplets; and a protective member disposed about the length of said nozzle tube and leaving an exposed discharge tip of said nozzle tube, said protective member having at least one capillary peripheral slit extending from the end near the discharge tip of said nozzle tube to a rearward portion near the other end of said protective member so that excessive ink collecting at the discharge tip of said nozzle tube will be drawn by capillary action through said at least one capillary peripheral slit away from the exposed discharge tip.
Claim 2
Dependent Claim
106 words
A nozzle device for ink jet printing equip-ment comprising: a nozzle tube for jetting out ink droplets; and a protective member disposed about the length of said nozzle tube and leaving an exposed discharge tip of said nozzle tube, said protective member having at least one capillary peripheral slit extending from the end near the discharge tip of said nozzle tube to a rearward portion near the other end of said protective member so that excessive ink collecting at the discharge tip of said nozzle tube will be drawn by capillary action through said at least one capillary peripheral slit away from the exposed discharge tip.
Claim 3
Dependent Claim
106 words
A nozzle device for ink jet printing equipment comprising: at least one nozzle tube for jetting out ink droplets; and a substantially planar member having at least one aperture through which said at least one nozzle tube is concentrically disposed so as to exit on one side thereof, said at least one nOzzle tube positioned therein to leave a capillary cylindrical space that is interposed between said at least one aperture and said at least one nozzle tube so that excessive ink collecting at the discharge tip of said at least one nozzle tube will be drawn by the capillary action away from the discharge tip.
Claim 4
Dependent Claim
106 words
A nozzle device for ink jet printing equipment comprising: at least one nozzle tube for jetting out ink droplets; and a substantially planar member having at least one aperture through which said at least one nozzle tube is concentrically disposed so as to exit on one side thereof, said at least one nOzzle tube positioned therein to leave a capillary cylindrical space that is interposed between said at least one aperture and said at least one nozzle tube so that excessive ink collecting at the discharge tip of said at least one nozzle tube will be drawn by the capillary action away from the discharge tip.
Claim 5
Dependent Claim
192 words
A nozzle device for ink jet printing equipment comprising: a nozzle tube for jetting out ink droplets; a cylindrically-shaped protective member concentrically disposed about the outside periphery of said nozzle tube and leaving an exposed discharge tip, said protective member having at least one capillary peripheral slit extending from the forward face near the discharge tip of said nozzle tube rearward to near the other end of said protective member; a substantially cylindrically-shaped support member positioned about and exposing a portion of said protective member and having an aperture disposed concentrically therethrough, said aperture of approximately complimentary diameter to said protective member so as to receive the outside periphery thereof; and a cylindrical nozzle plate of smaller diameter than said support member and extending therefrom, and concentrically positioned about the exposed portion of said protective member, said nozzle plate having a centrally disposed aperture substantially complimentary with the outer periphery of said protective member so that as ink is ejected through the discharge tip of said at least one nozzle tube any excess ink will contact and be drawn through said at least one capillary peripheral slit by the capillary action thereof.
Claim 6
Dependent Claim
192 words
A nozzle device for ink jet printing equipment comprising: a nozzle tube for jetting out ink droplets; a cylindrically-shaped protective member concentrically disposed about the outside periphery of said nozzle tube and leaving an exposed discharge tip, said protective member having at least one capillary peripheral slit extending from the forward face near the discharge tip of said nozzle tube rearward to near the other end of said protective member; a substantially cylindrically-shaped support member positioned about and exposing a portion of said protective member and having an aperture disposed concentrically therethrough, said aperture of approximately complimentary diameter to said protective member so as to receive the outside periphery thereof; and a cylindrical nozzle plate of smaller diameter than said support member and extending therefrom, and concentrically positioned about the exposed portion of said protective member, said nozzle plate having a centrally disposed aperture substantially complimentary with the outer periphery of said protective member so that as ink is ejected through the discharge tip of said at least one nozzle tube any excess ink will contact and be drawn through said at least one capillary peripheral slit by the capillary action thereof.
Claim 7
Dependent Claim
40 words
The nozzle device as in claim 2 wherein disposed about said other end of said protective member is a sponge communicating with a portion of said at least one capillary peripheral slit to absorb the ink that is drawn therethrough.
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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) | 1976-12-03 | 1977-06-04 | 1977-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-03 | 1981-06-04 | 1981-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-03 | 1985-06-04 | 1985-12-04 | $7700.00 | Window Closed / Lapsed |