US3786516A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Deflection electrode device for an ink jet printing apparatus
Assignee: Casio Computer Co Ltd
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Filing: 1971-12-13
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Granted: 1974-01-15
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Expires: 1991-12-13
Abstract
Abstract A deflection electrode device for an ink jet printing apparatus. A pair of vertical and a pair of horizontal deflection electrodes, the electrodes of which each have a groove for sucking ink deposited on the electrodes therein under capillary action, are disposed on the apparatus perpendicular to each other in a radial, spaced-apart arrangement about the ink stream.
Inventors
- 👤 T Kashio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:58
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/07; B41J2/075; B41J2/08; B41J2/09
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
210 words
In an ink jet printing apparatus in which ink is jetted in a stream of small droplets from an outlet nozzle towards and onto a recording medium by an acceleration means utilizing electrostatic, electromagnetic, or ultrasonic force, and the like, a deflection electrode device for deflecting the direction of the ink stream comprising: a pair of vertical deflection electrodes affixed to the ink jet printing apparatus, and a pair of horizontal deflection electrodes affixed to the ink jet printing apparatus adjacent said first pair of vertical deflection electrodes, said horizontal and vertical deflection electrodes have elongated grooves extending along their length adjacent to the ink stream for drawing ink deposited on said deflection electrodes therein and wherein the ends of said horizontal and vertical deflection electrodes are disposed in a radial, spaced-apart relationship around the ink stream, said grooves open on said ends of said electrodes adjacent said ink stream, said electrodes being metallic plates, shaped so as to have a first enlarged section, and a second section having a width less than said first section, said second section being radially inwardly disposed towards said ink stream, said grooves including slots disposed in one side of said electrodes and extending lengthwise along said electrodes through said first and second sections.
Claim 2
Dependent Claim
210 words
In an ink jet printing apparatus in which ink is jetted in a stream of small droplets from an outlet nozzle towards and onto a recording medium by an acceleration means utilizing electrostatic, electromagnetic, or ultrasonic force, and the like, a deflection electrode device for deflecting the direction of the ink stream comprising: a pair of vertical deflection electrodes affixed to the ink jet printing apparatus, and a pair of horizontal deflection electrodes affixed to the ink jet printing apparatus adjacent said first pair of vertical deflection electrodes, said horizontal and vertical deflection electrodes have elongated grooves extending along their length adjacent to the ink stream for drawing ink deposited on said deflection electrodes therein and wherein the ends of said horizontal and vertical deflection electrodes are disposed in a radial, spaced-apart relationship around the ink stream, said grooves open on said ends of said electrodes adjacent said ink stream, said electrodes being metallic plates, shaped so as to have a first enlarged section, and a second section having a width less than said first section, said second section being radially inwardly disposed towards said ink stream, said grooves including slots disposed in one side of said electrodes and extending lengthwise along said electrodes through said first and second sections.
Claim 3
Dependent Claim
73 words
The deflection electrode device as recited in claim 1, wherein said vertical and horizontal deflection electrodes are affixed to the ink jet printing apparatus so that they are disposed within a plane perpendicular to the direction of the stream of the ink particles, and so that said vertical deflection electrodes are vertically disposed and said horizontal defection electrodes are horizontally disposed, and said vertical and horizontal electrodes are disposed perpendicular to each other.
Claim 4
Dependent Claim
71 words
The deflection electrode device as recited in claim 1, wherein said electrodes comprise, a pair of firSt metal plates, and a second metal plate, substantially smaller in dimensions than said first metal plates, interdisposed between said pair of metal plates, said plates being laminated to secure said plates together to form said electrodes with said grooves being formed between said first pair of metal plates about the periphery of said electrodes.
Claim 5
Dependent Claim
42 words
The deflection electrode device as recited in claim 1, wherein said electrodes further comprise at least one additional groove, disposed in said second section of said electrodes perpendicular to said groove extending lengthwise therein, for sucking ink deposited on said electrodes therein.
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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) | 1977-01-14 | 1977-07-16 | 1978-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-14 | 1981-07-16 | 1982-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-14 | 1985-07-16 | 1986-01-15 | $7700.00 | Window Closed / Lapsed |