US4460906A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ink jet head with welded components
Assignee: Sharp Corp
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Filing: 1982-07-22
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Granted: 1984-07-17
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Expires: 2002-07-22
Abstract
Abstract A printer head for use in an ink jet system printer of the ink on demand type includes a base plate, an oscillation plate to which a piezoelectric transducer is attached, a housing plate for defining a pressure chamber, a path plate and an orifice plate disposed in a stack-like fashion. These plates are welded to each other in order to ensure tight sealing. A nickel alloy is painted on each surface of the plates, and the stacked plates are placed in a high temperature (1050° C. through 1100° C.) for connecting the plates to each other by heat welding.
Inventors
- 👤 Yoshio Kanayama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:03
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/135; B41J2/14; B41J2/14201; B41J2/14233; B41J2/16; B41J2/1607; B41J2/161; B41J2/1621; B41J2/1623; B41J2/1626; B41J2002/14387
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
134 words
An ink jet system ink on demand a print head which comprises a pressure chamber of which one end is provided with an orifice means for emitting ink droplets therethrough, and the other end is connected to an electro-mechanical transducer for suddenly reducing the volume of said pressure chamber, said print head comprising: a base plate; an oscillation plate secured to said base plate, said electro-mechanical transducer being attached to said oscillation plate; a housing plate welded to said oscillation plate, said housing plate defining said pressure chamber; a plurality of path plates disposed in a stack-like fashion and welded to each other, one surface of said stacked plurality of path plates being welded to said housing plate; and an orifice plate welded to the other surface of said stacked plurality of path plates.
Claim 2
Dependent Claim
134 words
An ink jet system ink on demand a print head which comprises a pressure chamber of which one end is provided with an orifice means for emitting ink droplets therethrough, and the other end is connected to an electro-mechanical transducer for suddenly reducing the volume of said pressure chamber, said print head comprising: a base plate; an oscillation plate secured to said base plate, said electro-mechanical transducer being attached to said oscillation plate; a housing plate welded to said oscillation plate, said housing plate defining said pressure chamber; a plurality of path plates disposed in a stack-like fashion and welded to each other, one surface of said stacked plurality of path plates being welded to said housing plate; and an orifice plate welded to the other surface of said stacked plurality of path plates.
Claim 3
Dependent Claim
20 words
The ink jet system print head of claim 1, which further comprises: a slit plate welded to said orifice plate.
Claim 4
Dependent Claim
20 words
The ink jet system print head of claim 1 or 2, wherein: said plates are heat-welded with nickel alloy therebetween.
References Cited (Backward Citations)
US4229751A
Cited
US4364066A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-07-17 | 1988-01-16 | 1988-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-17 | 1992-01-16 | 1992-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-17 | 1996-01-16 | 1996-07-17 | $7700.00 | Window Closed / Lapsed |