Patent US4543591A successfully refreshed from Google Patents.
US4543591A
Expired / Lapsed
US
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Suction recovery apparatus
Assignee: Canon Inc
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Filing: 1983-05-02
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Granted: 1985-09-24
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Expires: 2003-05-02
Abstract
Abstract A suction recovery apparatus comprises a capping unit for hermetically sealing the end of a recording head for discharging ink, a unit for mounting the capping unit movement toward the recording head, a negative pressure generating unit for generating a negative pressure, and a lever rotatable about an axis for moving the capping unit toward the recording head by rotation in one direction to hermetically seal the end of the head and causing the negative pressure generating unit to generate a negative pressure which sucks the end of the recording head.
Inventors
- 👤 Koji Terasawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:42
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/135; B41J2/165; B41J2/16505; B41J2/16508; B41J2/16511
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
91 words
A suction recovery apparatus comprising: capping means for capping the end of a recording head for discharging ink; holding means for mounting said capping means for movement toward said recording head; negative pressure generating means for generating a negative pressure; and a lever rotatable about an axis for moving said capping means toward said recording head by rotation about said axis in one direction to cap the end of said recording head and causing said negative pressure generating means to generate a negative pressure on the end of said recording head.
Claim 2
Dependent Claim
91 words
A suction recovery apparatus comprising: capping means for capping the end of a recording head for discharging ink; holding means for mounting said capping means for movement toward said recording head; negative pressure generating means for generating a negative pressure; and a lever rotatable about an axis for moving said capping means toward said recording head by rotation about said axis in one direction to cap the end of said recording head and causing said negative pressure generating means to generate a negative pressure on the end of said recording head.
Claim 3
Dependent Claim
56 words
A suction recovery apparatus according to claim 1 wherein said lever includes an operating portion for manually rotating said lever, said negative pressure generating means is a manually operated pump and the distance from said axis of said lever to said second contact portion is smaller than the distance from said axis to said operating portion.
Claim 4
Dependent Claim
20 words
A suction recovery apparatus according to claim 1, further comprising click means for resiliently stopping the rotation of said lever.
Claim 5
Dependent Claim
33 words
A suction recovery apparatus according to claim 1, wherein said lever causes said negative pressure generating means to generate a negative pressure after said recording head is hermetically capped by said capping means.
Claim 6
Dependent Claim
21 words
A suction recovery apparatus according to claim 1, further comprising biasing means for urging said capping means against said recording head.
Claim 7
Dependent Claim
20 words
A suction recovery apparatus according to claim 1, wherein said lever has a gear rotatable by a separate power source.
Claim 8
Dependent Claim
21 words
A suction recovery apparatus according to claim 1, wherein said holding means holds said negative pressure generating means and said lever.
Claim 9
Dependent Claim
53 words
A suction recovery apparatus according to claim 1, wherein said lever includes a first contact portion and a second contact portion and rotation of said lever about said axis brings said first contact portion into contact with said capping means and a second contact portion into contact with said negative pressure generating means.
References Cited (Backward Citations)
US3673601A
Cited
US4045802A
Cited
US4123761A
Cited
US4272772A
Cited
US4160982A
Cited
US4306245A
Cited
US4369454A
Cited
US4410900A
Cited
US4383263A
Cited
US4394669A
Cited
US4403233A
Cited
US4492969A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-09-23 | 1989-03-25 | 1989-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-23 | 1993-03-25 | 1993-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-23 | 1997-03-25 | 1997-09-24 | $7700.00 | Window Closed / Lapsed |