US3331077A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and medium for electron beam recording
Assignee: 3M Co
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Filing: 1964-12-28
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Granted: 1967-07-11
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Expires: 1984-12-28
Abstract
No abstract record available.
Inventors
- 👤 Jr William J Plank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:14
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/56; G03G; G03G13/00; G03G13/22; G03G13/24; G03G17/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
IN A METHOD FOR DIRECT ELECTRON BEAM RECORDING OF INFORMATION IN A SHEET-LIKE RECORDING MEDIUM ADAPTED FOR SUBSEQUENT READOUT OF PRERECORDED INFORMATION BY OPTICAL PROJECTION, SAID MEDIUM CONTAINING A BASE SUPPORT LAYER, AN ELECTRON SENSITIVE COMPOSITION LAYER, AND A CONDUCTIVE LAYER POSITIONED ADJACENT ONE FACE OF SAID SUPPORT LAYER AND COMPOSED OF METAL, THE IMPROVEMENT WHICH COMPRISED THE STEPS OF: (A) EXPOSING UNDER VACUUM ONE SURFACE OF SUCH A MEDIUM TO AN ELECTRON BEAM MODULATED WITH INFORMATION TO BE RECORDED WHILE SIMULTANEOUSLY GROUNDING THE CONDUCTIVE LAYER OF SUCH MEDIUM, SAID BEAM HAVING AN ASSOCIATED ENERGY AND RELATIVE MOTION ADAPTED FOR RECORDING SUCH MODULATION IN THE ELECTRON SENSITIVE COMPOSITION LAYER OF SUCH MEDIUM, AND (B) THEREAFTER CONTACTING SAID CONDUCTIVE LAYER WITH AN AQUEOUS ALKALINE LIQUID FOR A TIME SUFFICIENT TO DISSOLVE AND THEREBY REMOVE SUCH LAYER FROM SUCH MEDIUM.
Claim 2
Dependent Claim
138 words
IN A METHOD FOR DIRECT ELECTRON BEAM RECORDING OF INFORMATION IN A SHEET-LIKE RECORDING MEDIUM ADAPTED FOR SUBSEQUENT READOUT OF PRERECORDED INFORMATION BY OPTICAL PROJECTION, SAID MEDIUM CONTAINING A BASE SUPPORT LAYER, AN ELECTRON SENSITIVE COMPOSITION LAYER, AND A CONDUCTIVE LAYER POSITIONED ADJACENT ONE FACE OF SAID SUPPORT LAYER AND COMPOSED OF METAL, THE IMPROVEMENT WHICH COMPRISED THE STEPS OF: (A) EXPOSING UNDER VACUUM ONE SURFACE OF SUCH A MEDIUM TO AN ELECTRON BEAM MODULATED WITH INFORMATION TO BE RECORDED WHILE SIMULTANEOUSLY GROUNDING THE CONDUCTIVE LAYER OF SUCH MEDIUM, SAID BEAM HAVING AN ASSOCIATED ENERGY AND RELATIVE MOTION ADAPTED FOR RECORDING SUCH MODULATION IN THE ELECTRON SENSITIVE COMPOSITION LAYER OF SUCH MEDIUM, AND (B) THEREAFTER CONTACTING SAID CONDUCTIVE LAYER WITH AN AQUEOUS ALKALINE LIQUID FOR A TIME SUFFICIENT TO DISSOLVE AND THEREBY REMOVE SUCH LAYER FROM SUCH MEDIUM.
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) | 1970-07-10 | 1971-01-09 | 1971-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-10 | 1975-01-09 | 1975-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-10 | 1979-01-09 | 1979-07-11 | $7700.00 | Window Closed / Lapsed |