US4317124A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ink jet recording apparatus
Assignee: Canon Inc
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Filing: 1980-02-01
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Granted: 1982-02-23
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Expires: 2000-02-01
Abstract
Abstract An ink jet recording apparatus for ejecting a recording liquid in the form of droplets from an orifice connecting to a chamber containing said liquid and depositing at least of said droplets onto a recording material to perform recording, comprising a liquid intake means in the vicinity of said orifice.
Inventors
- 👤 Yoshiaki Shirato
- 👤 Yasushi Takatori
- 👤 Toshitami Hara
- 👤 Yukuo Nishimura
- 👤 Michiko Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:17
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/135; B41J2/14; B41J2/14016; B41J2/14032; B41J2/1404; B41J2002/14379; B41J2202/00; B41J2202/01; B41J2202/11
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
62 words
An ink jet recording apparatus for ejecting a recording liquid in the form of droplets from an orifice communicating with a chamber containing said liquid and depositing at least a part of said droplets onto a recording material to perform recording, comprising liquid intake means outside said orifice and adjacent said orifice to take in the liquid which does not become droplets.
Claim 2
Dependent Claim
62 words
An ink jet recording apparatus for ejecting a recording liquid in the form of droplets from an orifice communicating with a chamber containing said liquid and depositing at least a part of said droplets onto a recording material to perform recording, comprising liquid intake means outside said orifice and adjacent said orifice to take in the liquid which does not become droplets.
Claim 3
Dependent Claim
31 words
An ink jet recording apparatus according to the claim 1, wherein said liquid intake means comprises a slit-formed suction aperture of a gap in a range from 10 to 500 microns.
Claim 4
Dependent Claim
49 words
An ink jet recording apparatus according to the claim 1, further comprising an aperture for introducing said recording liquid into said liquid chamber, wherein said orifice and said aperture are so dimensioned that the cross section of said aperture is equal to or smaller than that of said orifice.
Claim 5
Dependent Claim
18 words
An ink jet recording apparatus according to the claim 1, comprising plural orifices in a mutually close arrangement.
Claim 6
Dependent Claim
54 words
An ink jet recording apparatus according to the claim 4, wherein said plural orifices are arranged in such a manner that a value r/l-r is equal to or in excess of 1/3, wherein l is the distance between the centers of adjacent orifices while r is the distance between the peripheries of adjacent orifices.
Claim 7
Dependent Claim
24 words
An ink jet recording apparatus according to the claim 1, wherein said liquid intake means comprises a suction aperture connected to a reduced-pressure zone.
Claim 8
Dependent Claim
19 words
An ink jet recording apparatus according to the claim 6, wherein said suction aperture is formed as a slit.
Claim 9
Dependent Claim
23 words
An ink jet recording apparatus according to the claim 6, wherein said suction aperture is rendered displaceable in the vicinity of said orifice.
Claim 10
Dependent Claim
81 words
An ink jet recording apparatus for ejecting a recording liquid in the form of droplets from an orifice communicating with a liquid chamber containing said liquid and depositing at least a part of said droplets onto a recording material to perform recording, comprising liquid pressurizing means for pressurizing said liquid in such a manner that said liquid spontaneously leaks out from said orifice and liquid intake means positioned outside said orifice and adjacent said orifice to take in the leaking liquid.
Claim 11
Dependent Claim
81 words
An ink jet recording apparatus for ejecting a recording liquid in the form of droplets from an orifice communicating with a liquid chamber containing said liquid and depositing at least a part of said droplets onto a recording material to perform recording, comprising liquid pressurizing means for pressurizing said liquid in such a manner that said liquid spontaneously leaks out from said orifice and liquid intake means positioned outside said orifice and adjacent said orifice to take in the leaking liquid.
Claim 12
Dependent Claim
31 words
An ink jet recording apparatus according to the claim 9, wherein said liquid intake means comprising a slit-formed suction aperture of a gap in a range from 10 to 500 microns.
Claim 13
Dependent Claim
49 words
An ink jet recording apparatus according to the claim 9, further comprising an aperture for introducing said recording liquid into said liquid chamber, wherein said orifice and said aperture are so dimensioned that the cross section of said aperture is equal to or smaller than that of said orifice.
Claim 14
Dependent Claim
18 words
An ink jet recording apparatus according to the claim 9, comprising plural orifices in a mutually close arrangement.
Claim 15
Dependent Claim
54 words
An ink jet recording apparatus according to the claim 12, wherein said plural orifices are arranged in such a manner that a value r/l-r is equal to or in excess of 1/3, wherein l is the distance between the centers of adjacent orifices while r is the distance between the peripheries of adjacent orifices.
Claim 16
Dependent Claim
24 words
An ink jet recording apparatus according to the claim 9, wherein said liquid intake means comprising a suction aperture connected to a reduced-pressure zone.
Claim 17
Dependent Claim
19 words
An ink jet recording apparatus according to the claim 14, wherein said suction aperture is formed as a slit.
Claim 18
Dependent Claim
23 words
An ink jet recording apparatus according to the claim 14, wherein said suction aperture is rendered displaceable in the vicinity of said orifice.
References Cited (Backward Citations)
US4223324A
Cited
US4164745A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-02-22 | 1985-08-24 | 1986-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-02-22 | 1989-08-24 | 1990-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-02-22 | 1993-08-24 | 1994-02-23 | $7700.00 | Window Closed / Lapsed |