US4434430A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ink jet printer head
Assignee: The General Electric Company PLC
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Filing: 1982-05-28
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Granted: 1984-02-28
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Expires: 2002-05-28
Abstract
Abstract An ink jet head for a printer for ejecting liquid ink as droplets onto a recording medium, comprises a substrate having a nozzle, pressure chamber and passageway which are defined in a surface thereof, and a vibration plate supporting thereon a piezoelectric element, the substrate and vibration plate being formed of the same or substantially the same synthetic resins. The substrate and vibratrion plate have confronting surfaces fused and bonded together by a solvent, a doped cement, or with heat and pressure, or by ultrasonic welding.
Inventors
- 👤 Haruhiko Koto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:59
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/135; B41J2/14; B41J2/14201; B41J2/14233; B41J2002/14379
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
112 words
An ink jet printer head for a printer for ejecting ink onto a recording medium, comprising thermoplastic resin comprising: a first substrate having a substantially planar surface and a second substrate having a cooperating substantially planar surface, one of the planar surfaces having at least one nozzle, pressure chamber and passageway defined therein; a piezoelectric element bonded to one of the first and second substrates, said first and second substrates formed from a thermoplastic material with the substantially planar surfaces permanently coupled together for forming the at least one nozzle, pressure chamber and passageway; and an ink tank which is integrally formed with said substrate defining said nozzle, pressure chamber and passageway.
Claim 2
Dependent Claim
112 words
An ink jet printer head for a printer for ejecting ink onto a recording medium, comprising thermoplastic resin comprising: a first substrate having a substantially planar surface and a second substrate having a cooperating substantially planar surface, one of the planar surfaces having at least one nozzle, pressure chamber and passageway defined therein; a piezoelectric element bonded to one of the first and second substrates, said first and second substrates formed from a thermoplastic material with the substantially planar surfaces permanently coupled together for forming the at least one nozzle, pressure chamber and passageway; and an ink tank which is integrally formed with said substrate defining said nozzle, pressure chamber and passageway.
Claim 3
Dependent Claim
23 words
An ink jet printer head as claimed in claim 1, wherein said first and second substrates are formed of a crystalline plastic resin.
Claim 4
Dependent Claim
27 words
An ink jet printer head as claimed in claim 2, wherein the crystalline plastic resin is selected from the group consisting of acetals, nylons, polyester or polypropylene.
Claim 5
Dependent Claim
23 words
An ink jet printer head as claimed in claim 1, wherein said ink tank has an opening to the exterior of said tank.
Claim 6
Dependent Claim
26 words
An ink jet printer head as claimed in claim 4, and further comprising a flexible film bonded to said ink tank, said film closing said opening.
Claim 7
Dependent Claim
93 words
An ink jet printer head for a printer for ejecting liquid ink onto a recording medium, comprising: a first substrate having a substantially planar surface and a second substrate having a cooperating substantially planar surface, the planar surfaces cooperating to define at least one nozzle, pressure chamber and passageway therebetween; and a piezoelectric element bonded to one of the first and second substrates, said first and second substrates formed from a thermoplastic material with the cooperating substantially planar surfaces permanently coupled together for forming the at least one nozzle, pressure chamber and passageway.
Claim 8
Dependent Claim
93 words
An ink jet printer head for a printer for ejecting liquid ink onto a recording medium, comprising: a first substrate having a substantially planar surface and a second substrate having a cooperating substantially planar surface, the planar surfaces cooperating to define at least one nozzle, pressure chamber and passageway therebetween; and a piezoelectric element bonded to one of the first and second substrates, said first and second substrates formed from a thermoplastic material with the cooperating substantially planar surfaces permanently coupled together for forming the at least one nozzle, pressure chamber and passageway.
Claim 9
Dependent Claim
22 words
An ink jet printer head as claimed in claim 6, wherein said first and second substrates are formed of amorphous plastic resin.
Claim 10
Dependent Claim
40 words
An ink jet printer head as claimed in claim 7, wherein the amorphous plastic resin is selected from the group consisting of polyphenylene ether polysulphones polyethersulfone, ABS resins, polymethyl methacrylate polycarbonates, polyvinyl resins, polystyrene, acrylonitrile-styrene copolymers or ethylene vinylacetate copolymers.
Claim 11
Dependent Claim
28 words
An ink jet printer head as claimed in claim 8, wherein said confronting surfaces of said first and second substrates are fused by a solvent of benzyl alcohol.
Claim 12
Dependent Claim
20 words
An ink jet printer head as claimed in claim 7, wherein said first and second substrates are formed of polysulphone.
Claim 13
Dependent Claim
26 words
The ink jet printer head of claim 10, wherein said substantially planar surfaces of the first and second substrates are permanently coupled by a doped cement.
Claim 14
Dependent Claim
22 words
The ink jet printer head of claim 11, wherein the doped cement is diethylene glycol monobutyl ether acetate doped with acrylonitrile-butadiene-styrene resin.
Claim 15
Dependent Claim
28 words
The ink jet printer head of claim 10, wherein the substantially planar surfaces of the first and second substrates are permanently coupled by bonding with an organic solvent.
Claim 16
Dependent Claim
24 words
The ink jet printer head of claim 13, wherein the solvent is selected from the group consisting of trichloroethylene, methylene chloride and benzyl alcohol.
Claim 17
Dependent Claim
20 words
An ink jet printer head as claimed in claim 7, wherein said first and second substrates are formed of ABS.
Claim 18
Dependent Claim
42 words
An ink jet printer head as claimed in claim 15, wherein said facing surfaces of said first and second subsrates are bonded together by a doped cement, said doped cement being a product of doping diethylene glycol monobutyl ether acetate with ABS.
Claim 19
Dependent Claim
34 words
An ink jet printer head as claimed in claim 7, wherein said first and second substrates are formed of thermoplastic resins and fused together by an organic solvent suitable for bonding said thermoplastic resin.
Claim 20
Dependent Claim
35 words
An ink jet printer head as claimed in claim 6, and further comprising an ink tank, said tank and one of the substrates of said head being formed integrally and simultaneously replaceable in said printer.
Claim 21
Dependent Claim
28 words
The ink jet printer head of claim 6, wherein the substantially planar surfaces of the first and second substrates are permanently coupled by bonding with an organic solvent.
Claim 22
Dependent Claim
28 words
The ink jet printer head of claim 6, wherein the substantially planar surfaces of the first and second substrate are permanently coupled by bonding with a doped cement.
Claim 23
Dependent Claim
26 words
The ink jet printer head of claim 6, wherein the substantially planar surfaces of the first and second substrate are permanently coupled by fusing with heat.
Claim 24
Dependent Claim
37 words
An ink jet printer head as claimed in claim 6, wherein said first and second substrates are bonded together under pressure at an elevated temperature, said temperature being below the temperature at which said substrates are deformable.
Claim 25
Dependent Claim
28 words
The ink jet printer head of claim 6, wherein the substantially planar cooperating surfaces of the first and second substrate are permanently coupled by fusing with ultrasonic welding.
Claim 26
Dependent Claim
14 words
The ink jet printer head of claim 6, wherein the thermoplastic resin is transparent.
Claim 27
Dependent Claim
100 words
An ink jet printer head for a printer for ejecting liquid ink onto a recording medium, comprising: a first substrate having a substantially planar surface and a second substrate having a cooperating substantially planar surface, one of the planar surfaces having at least one nozzle, pressure chamber and passageway defined therein, and a piezoelectric element bonded to one of the first and second substrates, said first and second substrates formed from a polysolfone resin with the cooperating substantially planar surfaces permanently coupled together by bonding with a doped cement for forming the at least one nozzle, pressure chamber and passageway.
Claim 28
Dependent Claim
100 words
An ink jet printer head for a printer for ejecting liquid ink onto a recording medium, comprising: a first substrate having a substantially planar surface and a second substrate having a cooperating substantially planar surface, one of the planar surfaces having at least one nozzle, pressure chamber and passageway defined therein, and a piezoelectric element bonded to one of the first and second substrates, said first and second substrates formed from a polysolfone resin with the cooperating substantially planar surfaces permanently coupled together by bonding with a doped cement for forming the at least one nozzle, pressure chamber and passageway.
Claim 29
Dependent Claim
23 words
The ink jet printer head of claim 25, wherein the doped cement is diethylene glycol monobutyl ether acetate doped with an acrylonile-butadiene-styrene resin.
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) | 1987-02-27 | 1987-08-29 | 1988-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-02-27 | 1991-08-29 | 1992-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-02-27 | 1995-08-29 | 1996-02-28 | $7700.00 | Window Closed / Lapsed |