Patent US4023183A successfully refreshed from Google Patents.
US4023183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary deflection electrodes in an ink jet system printer
Assignee: Sharp Corp
•
Filing: 1975-10-31
•
Granted: 1977-05-10
•
Expires: 1995-10-31
Abstract
Abstract A pair of rotary deflection electrodes are provided to confront with each other in an ink jet system printer in order to deflect charged ink droplets emitted from a nozzle as they pass through a high voltage electric field established therebetween. Cleaners are installed close to the rotary deflection electrodes at the position where the electric field established between the rotary deflection electrodes will not be disturbed by the cleaners in order to sweep the rotary deflection electrodes as they rotate.
Inventors
- 👤 Rikuo Takano
- 👤 Yuji Sumitomo
- 👤 Yoichi Yamamoto
- 👤 Masahiko Aiba
- 👤 Tokio Maezawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:01
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/07; B41J2/075; B41J2/08; B41J2/09
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
100 words
In combination with an ink jet system printer which emits charged ink droplets from a nozzle toward a record receiving member and selectively deflects said ink droplets by deflection means and records desired symbols on said record receiving member with said selectively deflected ink droplets, the deflection means comprising: a high voltage source; a pair of rotary deflection electrode means connected with said high-voltage source to establish a high-voltage electric field between said pair of rotary deflection electrode means; and cleaning means continuously juxtaposed with said rotary deflection electrode means to clean said rotary deflection electrode means during rotation thereof.
Claim 2
Dependent Claim
100 words
In combination with an ink jet system printer which emits charged ink droplets from a nozzle toward a record receiving member and selectively deflects said ink droplets by deflection means and records desired symbols on said record receiving member with said selectively deflected ink droplets, the deflection means comprising: a high voltage source; a pair of rotary deflection electrode means connected with said high-voltage source to establish a high-voltage electric field between said pair of rotary deflection electrode means; and cleaning means continuously juxtaposed with said rotary deflection electrode means to clean said rotary deflection electrode means during rotation thereof.
Claim 3
Dependent Claim
24 words
The combination of claim 1 which further includes motor means driving said pair of rotary deflection electrode means at a constant velocity of rotation.
Claim 4
Dependent Claim
15 words
The combination of claim 2 wherein the constant velocity is about 10 revolutions per minute.
Claim 5
Dependent Claim
21 words
The combination of claim 1 wherein said rotary deflection electrode means comprise cylindrical electrodes and motor means rotating said cylindrical electrodes.
Claim 6
Dependent Claim
31 words
The combination of claim 1 wherein said cleaning means are positioned where the high-voltage electric field established between the rotary deflection electrode means will not be disturbed by said cleaning means.
Claim 7
Dependent Claim
14 words
The combination of claim 1 wherein the cleaning means comprise pads made of chamois.
Claim 8
Dependent Claim
42 words
The combination of claim 1 wherein said pair of rotary deflection electrode means comprise driving rollers and a pair of conductive endless belts supported by and driven to rotate by said driving rollers, said driving rollers being connected with said high-voltage source.
Claim 9
Dependent Claim
21 words
The combination of claim 1 wherein one of said pair of rotary deflection electrode means is kept at the ground potential.
Claim 10
Dependent Claim
29 words
The combination of claim 8 wherein the other of said pair of rotary deflection electrode means is connected to receive a high-voltage potential and insulated from the system printer.
Claim 11
Dependent Claim
97 words
In combination with an ink jet system printer which emits charged ink droplets from a nozzle toward a record receiving member and selectively deflects said ink droplets by deflection means and records desired symbols on said record receiving member with said selectively deflected ink droplets, the deflection means comprising: a cylinder shaped deflection electrode driven to continuously rotate by a motor through a driving system; and cleaning means installed close to the cylinder shaped deflection electrode in such a manner to continuously contact the cylinder shaped deflection electrode in order to sweep the electrode as it rotates.
Claim 12
Dependent Claim
97 words
In combination with an ink jet system printer which emits charged ink droplets from a nozzle toward a record receiving member and selectively deflects said ink droplets by deflection means and records desired symbols on said record receiving member with said selectively deflected ink droplets, the deflection means comprising: a cylinder shaped deflection electrode driven to continuously rotate by a motor through a driving system; and cleaning means installed close to the cylinder shaped deflection electrode in such a manner to continuously contact the cylinder shaped deflection electrode in order to sweep the electrode as it rotates.
Claim 13
Dependent Claim
95 words
In combination with an ink jet system printer which emits charged ink droplets from a nozzle toward a record receiving member and selectively deflects said ink droplets by deflection means and records desired symbols on said record receiving member with said selectively deflected ink droplets, self cleaning deflection means comprising: a cylinder shaped deflection electrode mounted for rotation on its longitudinal axis; motor means for driving said electrode in rotation; and cleaning means mounted in coexterminous juxtaposition with said cylinder shaped deflection electrode in such a manner as to sweep said electrode as it rotates.
Claim 14
Dependent Claim
95 words
In combination with an ink jet system printer which emits charged ink droplets from a nozzle toward a record receiving member and selectively deflects said ink droplets by deflection means and records desired symbols on said record receiving member with said selectively deflected ink droplets, self cleaning deflection means comprising: a cylinder shaped deflection electrode mounted for rotation on its longitudinal axis; motor means for driving said electrode in rotation; and cleaning means mounted in coexterminous juxtaposition with said cylinder shaped deflection electrode in such a manner as to sweep said electrode as it rotates.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-05-09 | 1980-11-08 | 1981-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-09 | 1984-11-08 | 1985-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-09 | 1988-11-08 | 1989-05-10 | $7700.00 | Window Closed / Lapsed |