US5270739A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid container having an elastic dome-shaped pressure control device with a slit
Assignee: Canon Inc
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Filing: 1992-01-23
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Granted: 1993-12-14
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Expires: 2012-01-23
Abstract
Abstract A liquid container (170) includes a liquid outlet for supplying liquid; and a pressure control device (100), disposed in the container and adjacent the outlet, having a valve function for permitting liquid supply through the outlet within a predetermined pressure range. <IMAGE>
Inventors
- 👤 Masashi Kitani
- 👤 Yoshifumi Hattori
- 👤 Etsurou Suzuki
- 👤 Hideo Saikawa
- 👤 Masami Kojima
- 👤 Kenji Kawano
- 👤 Koichi Tanno
- 👤 Kenji Aono
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:17
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/17; B41J2/175; B41J2/17503; B41J2/17543; B41J2/17546; B41J2/17513; B41J2/1752
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
74 words
An ink container comprising: a container body defining a space for accommodating ink; an ink outlet for supplying the ink from said container body; and pressure control means for controlling pressure of the ink supply, said pressure control means having a valve covering the outlet, wherein said pressure control means is an elastic dome having a slit which is normally closed and opens when a differential pressured beyond a predetermined level is applied thereto.
Claim 2
Dependent Claim
74 words
An ink container comprising: a container body defining a space for accommodating ink; an ink outlet for supplying the ink from said container body; and pressure control means for controlling pressure of the ink supply, said pressure control means having a valve covering the outlet, wherein said pressure control means is an elastic dome having a slit which is normally closed and opens when a differential pressured beyond a predetermined level is applied thereto.
Claim 3
Dependent Claim
49 words
A container according to claim 1, wherein said container is connected to a recording head for ejecting ink to effect a recording operation, said container supplying ink to the recording head, and wherein said pressure control means maintains a pressure of +30 mm.aq or lower to the recording head.
Claim 4
Dependent Claim
22 words
A container according to claim 1, wherein a plurality of said pressure control means are provided in series in said container body.
Claim 5
Dependent Claim
22 words
A container according to claim 1, further comprising limiting means for limiting deformation of said pressure control means in a predetermined direction.
Claim 6
Dependent Claim
49 words
A container according to claim 1, wherein said elastic dome includes a plurality of slits on a top of said dome, and is provided with limiting means for limiting deformation thereof in a predetermined direction, wherein said limiting means is provided by changing a wall thickness of said dome.
Claim 7
Dependent Claim
16 words
A container according to claim 5, wherein said limiting means includes a rib on said dome.
Claim 8
Dependent Claim
14 words
A container according to claim 5, wherein said limiting means includes an oval mount.
Claim 9
Dependent Claim
23 words
a container according to claim 1 wherein a recess is provided in an inside portion of said pressure control means adjacent the slit.
Claim 10
Dependent Claim
25 words
A container according to claim 1, wherein said pressure control means is provided with a plurality of slits crossing at predetermined angles with each other.
Claim 11
Dependent Claim
90 words
An ink jet head cartridge comprising; a container body defining a space for accommodating ink; an ink outlet for supplying the ink from said container body; pressure control means for controlling pressure of the ink supply, said pressure control means having a valve covering the outlet, wherein said pressure control means is an elastic dome having a slit which is normally closed and opens when a differential pressured beyond a predetermined level is applied thereto; and a recording head supplied with the ink from said container for ejecting the ink.
Claim 12
Dependent Claim
90 words
An ink jet head cartridge comprising; a container body defining a space for accommodating ink; an ink outlet for supplying the ink from said container body; pressure control means for controlling pressure of the ink supply, said pressure control means having a valve covering the outlet, wherein said pressure control means is an elastic dome having a slit which is normally closed and opens when a differential pressured beyond a predetermined level is applied thereto; and a recording head supplied with the ink from said container for ejecting the ink.
Claim 13
Dependent Claim
30 words
An ink jet head cartridge according to claim 10, wherein said recording head uses thermal energy to eject the ink and comprises an electrothermal transducer element for generating thermal energy.
Claim 14
Dependent Claim
107 words
An ink jet apparatus comprising: a container body defining a space for accommodating ink; an ink outlet for supplying the ink from said container body; pressure control means for controlling pressure of the ink supply, said pressure control means having a valve covering the outlet, wherein said pressure control means is an elastic dome having a slit which is normally closed and opens when a differential pressured beyond a predetermined level is applied thereto; a recording head supplied with the ink from said container for ejecting the ink on a recording material; a member for supporting said recording head; and feeding means for feeding the recording material.
Claim 15
Dependent Claim
107 words
An ink jet apparatus comprising: a container body defining a space for accommodating ink; an ink outlet for supplying the ink from said container body; pressure control means for controlling pressure of the ink supply, said pressure control means having a valve covering the outlet, wherein said pressure control means is an elastic dome having a slit which is normally closed and opens when a differential pressured beyond a predetermined level is applied thereto; a recording head supplied with the ink from said container for ejecting the ink on a recording material; a member for supporting said recording head; and feeding means for feeding the recording material.
Claim 16
Dependent Claim
29 words
An ink jet apparatus according to claim 12, wherein said recording head uses thermal energy to eject the ink and comprises an electrothermal transducer element for generating thermal energy.
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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) | 1996-12-13 | 1997-06-14 | 1997-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-12-13 | 2001-06-14 | 2001-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-12-13 | 2005-06-14 | 2005-12-14 | $7700.00 | Window Closed / Lapsed |