Patent US4394669A successfully refreshed from Google Patents.
US4394669A
Expired / Lapsed
US
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Liquid jet recording apparatus
Assignee: Canon Inc
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Filing: 1981-07-06
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Granted: 1983-07-19
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Expires: 2001-07-06
Abstract
Abstract A liquid jet recording apparatus comprises a first ink tank for storing an amount of ink, a second ink tank for receiving the ink from said first tank through a feed tube, a recording head for jetting the ink fed from said second tank, and a carriage for reciprocally moving said second ink tank and recording head together, characterized in that at least a portion of said feed tube is lengthwise moved following the movement of said second ink tank along the course of its reciprocation and thereby the ink is fed to said second ink tank from said first ink tank.
Inventors
- 👤 Masakazu Ozawa
- 👤 Kunio Watanabe
- 👤 Shigeyuki Matsumoto
- 👤 Yukuo Nishimura
- 👤 Takashi Miyazaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:49
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/17; B41J2/175
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
157 words
A liquid jet recording apparatus comprising: a first ink tank for storing an amount of ink; a second ink tank position at a level higher than said first ink tank, and connected to a feed tube in communication with said first ink tank, said second ink tank receives the ink from said first tank through the feed tube, said first ink tank and said second ink tank being closed containers; a recording head associated with said second ink tank for jetting the ink fed from said second ink tank; and a carriage connected to said second ink tank and said recording head for reciprocally moving said second ink tank and said recording head together, wherein at least a portion of the feed tube is moved along the reciprocal movement path of said second ink tank thereby producing pressure in said second ink tank to feed the ink to said second ink tank from said first ink tank.
Claim 2
Dependent Claim
157 words
A liquid jet recording apparatus comprising: a first ink tank for storing an amount of ink; a second ink tank position at a level higher than said first ink tank, and connected to a feed tube in communication with said first ink tank, said second ink tank receives the ink from said first tank through the feed tube, said first ink tank and said second ink tank being closed containers; a recording head associated with said second ink tank for jetting the ink fed from said second ink tank; and a carriage connected to said second ink tank and said recording head for reciprocally moving said second ink tank and said recording head together, wherein at least a portion of the feed tube is moved along the reciprocal movement path of said second ink tank thereby producing pressure in said second ink tank to feed the ink to said second ink tank from said first ink tank.
Claim 3
Dependent Claim
18 words
An apparatus as set forth in claim 1 wherein said feed tube is formed of a flexible tube.
Claim 4
Dependent Claim
35 words
An apparatus as set forth in claim 1 wherein said second ink tank is so formed as to contain a layer of air in contact with the level surface of the ink within the tank.
Claim 5
Dependent Claim
21 words
An apparatus as set forth in claim 1 which further comprises suction means for said recording head and second ink tank.
Claim 6
Dependent Claim
19 words
An apparatus as set forth in claim 1 which further comprises a capping mechanism engageable with said recording head.
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) | 1986-07-18 | 1987-01-17 | 1987-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-07-18 | 1991-01-17 | 1991-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-07-18 | 1995-01-17 | 1995-07-19 | $7700.00 | Window Closed / Lapsed |