Patent US3701847A successfully refreshed from Google Patents.
US3701847A
Expired / Lapsed
US
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Electron beam recorder
Assignee: Individual
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Filing: 1971-08-17
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Granted: 1972-10-31
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Expires: 1991-08-17
Abstract
Abstract An electron beam recorder comprises a plurality of electron guns, a condenser lens, a device for scanning the electron beams produced by the electron guns, a device for conveying a recording medium and a device for supporting said recording medium in a recording chamber forming part of the electron beam recorder. The electron beams are modulated by the information to be recorded. The beams intersect at the center of said condenser lens so as to impinge on different parts of said recording medium. The beams are made to scan the recording medium by the scanning device, each beam exposing different areas of said recording medium.
Inventors
- 👤 Sakae Miyauchi
- 👤 Kazumitsu Tanaka
- 👤 Nobuo Goto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:31
CPC Classifications
H; H01; H01J; H01J31/00; H01J31/08; H04; H04N; H04N5/00; H04N5/76; H04N5/84
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
131 words
An electron beam recorder for recording a plurality of information groups at different transverse positions on an elongated radiant energy sensitive recording medium comprising: A. a plurality of electron guns for producing a plurality of electron beams, each of which can be modulated with the information of one group; B. a condenser lens for focusIng said plurality of electron beams, said guns orientated such that the point of intersection of the beams is at the center of said condenser lens; C. a means for supporting the recording medium in a recording chamber; D. a means for simultaneously scanning said plurality of electron beams so as to expose different areas on said recording medium to different scanning beams; and E. a driving means for conveying said recording medium under the scanning beams.
Claim 2
Dependent Claim
131 words
An electron beam recorder for recording a plurality of information groups at different transverse positions on an elongated radiant energy sensitive recording medium comprising: A. a plurality of electron guns for producing a plurality of electron beams, each of which can be modulated with the information of one group; B. a condenser lens for focusIng said plurality of electron beams, said guns orientated such that the point of intersection of the beams is at the center of said condenser lens; C. a means for supporting the recording medium in a recording chamber; D. a means for simultaneously scanning said plurality of electron beams so as to expose different areas on said recording medium to different scanning beams; and E. a driving means for conveying said recording medium under the scanning beams.
Claim 3
Dependent Claim
37 words
An electron beam recorder as set forth in claim 1 in which the distance between the electron guns and the center of the condenser lens is greater than the distance between said center and said supporting means.
Claim 4
Dependent Claim
40 words
An electron beam recorder as set forth in claim 2 in which the electron guns are secured to a base plate at an adjustable inclination sufficient to cause the electron beams to intersect at the center of the condenser lens.
Claim 5
Dependent Claim
29 words
An electron beam recorder as set forth in claim 2 incorporating a diaphragm whose aperture aligns with the center of the condenser lens through which the electron beams pass.
Claim 6
Dependent Claim
34 words
An electron beam recorder as set forth in claim 2, incorporating a shielding diaphragm between the condenser lens and the scanning means to separate and join the electron gun chamber and the recording chamber.
Claim 7
Dependent Claim
32 words
An electron beam recorder as set forth in claim 2 having supply and take-up reels housed in respective film chambers maintained at a vacuum pressure different from that of the recording chamber.
Claim 8
Dependent Claim
43 words
An electron beam recorder as set forth in claim 2 in which said electron guns are secured to individual base plates, one of which can be adjusted with respect to the center of the lens so as to vary the angle of intersection.
Claim 9
Dependent Claim
24 words
An electron beam recorder as set forth in claim 7 in which said plates are designed to rotate with respect to said recording medium.
References Cited (Backward Citations)
US3409906A
Cited
US3614302A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-31 | 1976-05-01 | 1976-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-31 | 1980-05-01 | 1980-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-31 | 1984-05-01 | 1984-10-31 | $7700.00 | Window Closed / Lapsed |