Patent US4600927A successfully refreshed from Google Patents.
US4600927A
Expired / Lapsed
US
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Method of preserving ink jet recording head
Assignee: Canon Inc
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Filing: 1985-03-21
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Granted: 1986-07-15
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Expires: 2005-03-21
Abstract
Abstract A method of preserving an ink jet recording head comprises an ejecting element for flying ink droplets, an elastic ink tank portion containing an ink to be fed to the ejecting element, a casing housing the ink tank portion, and the feature is composed of housing the ink jet recording head in a preserving container, elevating the gas pressure in the preserving container to a pressure higher than atmospheric pressure, and keeping the pressurized state. An ink jet recording head is housed in the preserving container and the pressure in the container is higher than atmospheric pressure.
Inventors
- 👤 Hiroshi Sugitani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:35
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/135; B41J2/165
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
71 words
A method of preserving an ink jet recording head comprising an ejecting element for flying ink droplets, an elastic ink tank portion containing an ink to be fed to the ejecting element, a casing housing the ink tank portion, characterized by housing the ink jet recording head in a preserving container, elevating the gas pressure in the preserving container to a pressure higher than atmospheric pressure, and keeping the pressurized state.
Claim 2
Independent Claim
71 words
A method of preserving an ink jet recording head comprising an ejecting element for flying ink droplets, an elastic ink tank portion containing an ink to be fed to the ejecting element, a casing housing the ink tank portion, characterized by housing the ink jet recording head in a preserving container, elevating the gas pressure in the preserving container to a pressure higher than atmospheric pressure, and keeping the pressurized state.
Claim 3
Dependent Claim
29 words
The method according to claim 1 in which pressurizing the gas in the preserving container is effected by feeding a gas through a communicating pipe mounted on the container.
Claim 4
Dependent Claim
18 words
The method according to claim 1 in which the gas in the preserving container is an inert gas.
Claim 5
Dependent Claim
14 words
The method according to claim 3 in which the inert gas contains nitrogen gas.
Claim 6
Dependent Claim
16 words
The method according to claim 1 in which the gas in the preserving container is humidified.
Claim 7
Dependent Claim
23 words
The method according to claim 5 in which the humidifying is effected by using a solvent or a vaporizing component of the ink.
Claim 8
Dependent Claim
25 words
The method according to claim 1 in which pressurizing the gas in the preserving container is effected by a pressurizing means fixed to the container.
Claim 9
Dependent Claim
14 words
The method according to claim 7, in which the pressurizing means is a piston.
Claim 10
Dependent Claim
33 words
A preserving container for ink jet recording head, characterized in that the ink jet recording head is housed in the preserving container and the pressure in the container is higher than atmospheric pressure.
Claim 11
Dependent Claim
33 words
A preserving container for ink jet recording head, characterized in that the ink jet recording head is housed in the preserving container and the pressure in the container is higher than atmospheric pressure.
Claim 12
Dependent Claim
45 words
The preserving container according to claim 9 in which the ink jet recording head comprises an ejecting element for flying ink droplets, an elastic ink tank portion containing an ink to be fed to the ejecting element and a casing housing the ink tank portion.
Claim 13
Dependent Claim
25 words
The preserving container according to claim 9 in which the pressurizing is effected by feeding a gas through a communicating pipe fixed to the container.
Claim 14
Dependent Claim
28 words
The preserving container according to claim 9 in which the preserving container is provided with a pressurizing means for elevating the pressure to that higher than atmospheric pressure.
Claim 15
Dependent Claim
17 words
The preserving container according to claim 12 in which the pressurizing means is provided with a piston.
Claim 16
Dependent Claim
19 words
The preserving container according to claim 9 in which the gas in the preserving container in an inert gas.
Claim 17
Dependent Claim
15 words
The preserving container according to claim 14 in which the inert gas contains nitrogen gas.
Claim 18
Dependent Claim
17 words
The preserving container according to claim 9 in which the gas in the preserving container is humidified.
Claim 19
Dependent Claim
24 words
The preserving container according to claim 16 in which the humidifying is effected by using a solvent or a vaporizing component of the ink.
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) | 1989-07-14 | 1990-01-13 | 1990-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-07-14 | 1994-01-13 | 1994-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-07-14 | 1998-01-13 | 1998-07-15 | $7700.00 | Window Closed / Lapsed |