Patent US4333087A successfully refreshed from Google Patents.
US4333087A
Expired / Lapsed
US
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Ink-jet recording device
Assignee: Toshiba Corp
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Filing: 1980-07-10
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Granted: 1982-06-01
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Expires: 2000-07-10
Abstract
Abstract Ink-jet recording device includes an ink chamber for accommodating an ink body from which ink is jetted through a nozzle by applying a pressure and to which ink is supplied from an ink source through an ink inlet port. A porous filter is provided in the ink inlet port near the ink chamber, through which ink flows into the ink chamber.
Inventors
- 👤 Yasuhiro Yamaguti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:12
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/015; B41J2/04; B41J2/045; B41J2/055
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
152 words
An ink-jet recording device comprising: a container having an ink chamber for storing an ink body, having an opening formed on one side; pressurizing means provided on one side of the container for applying pressure to the ink body in the ink chamber in accordance with an electric signal applied thereto; a porous filter disposed inside the ink chamber to face the pressurizing means in a predetermined distance to divide the ink chamber into first and second chamber sections and directly subjected to the pressure applied by the pressurizing means; an ink outlet port opening at the first chamber section between the pressurizing means and porous filter; an ink inlet port including an opening communicated with the second chamber section and having a smaller diameter than that of the second chamber section; and an ink source connected with the inlet port and supplying ink into the ink chamber through the inlet port.
Claim 2
Dependent Claim
152 words
An ink-jet recording device comprising: a container having an ink chamber for storing an ink body, having an opening formed on one side; pressurizing means provided on one side of the container for applying pressure to the ink body in the ink chamber in accordance with an electric signal applied thereto; a porous filter disposed inside the ink chamber to face the pressurizing means in a predetermined distance to divide the ink chamber into first and second chamber sections and directly subjected to the pressure applied by the pressurizing means; an ink outlet port opening at the first chamber section between the pressurizing means and porous filter; an ink inlet port including an opening communicated with the second chamber section and having a smaller diameter than that of the second chamber section; and an ink source connected with the inlet port and supplying ink into the ink chamber through the inlet port.
Claim 3
Dependent Claim
29 words
An ink-jet recording device according to claim 1 wherein the opening of said inlet port is located on the other side of the container to face the porous filter.
Claim 4
Dependent Claim
31 words
An ink-jet recording device according to claim 1, wherein said pressurizing means includes a piezoelectric element and first and second electrode plates disposed respectively on both sides of said piezoelectric element.
Claim 5
Dependent Claim
28 words
An ink-jet recording device according to claim 3, wherein said container body has an opening which opens into said ink chamber, said first electrode plate closing said opening.
Claim 6
Dependent Claim
18 words
An ink-jet recording device according to claim 4, wherein said porous filter is a sintered stainless steel plate.
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) | 1985-05-31 | 1985-11-30 | 1986-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-31 | 1989-11-30 | 1990-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-31 | 1993-11-30 | 1994-06-01 | $7700.00 | Window Closed / Lapsed |