US3852771A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron beam recording process
Assignee: RCA Corp
•
Filing: 1973-02-12
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Granted: 1974-12-03
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Expires: 1993-02-12
Abstract
Abstract Recording media comprising a mixture of 2,4-bis(6-diazo-5,6dihydro-5-oxo-1-naphthalenesulfonyloxy)-benzophenone and an alkali soluble resin are suitable for recording information with electron beams. These recording media have high sensitivity, high resolving power and can be reproducibly formulated.
Inventors
- 👤 D Ross
- 👤 L Barton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:37
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/022; Y; Y10; Y10S; Y10S430/00; Y10S430/143
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
101 words
IN A METHOD OF RECORDING INFORMATION WHEREBY A MODULATED BEAM OF ELECTRONS IS SCANNED ACROSS A SURFACE OF AN ELECTRON BEAM SENSITIVE MATERIAL WHICH BECOMES MORE SOLUBLE IN A DEVELOPER SOLVENT WHEN IMPINGED UPON BY THE BEAM OF ELECTRONS AND TTHE ELECTRON BEAM SENSITIVE MATERIAL IS DEVELOPED WITH THE DEVELOPER SOLVENT SO AS TO REMOVE THE SOLUBILIZED PORTION THE IMPROVEMENT WHICH COMPRISES EMPLOYING IN AN ELECTRON BEAM SENSITIVE LAYERS OF SAID MATERIAL A MIXTURE CONSISTING ESSENTIALLY OF FROM ABOUT 1 TO ABOUT 50% BY WEIGHT AS BASED ON THE TOTAL WEIGHT OF THE MIXTURE OF AN ACTIVE COMPOUND OF THE STRUCTURE
Claim 2
Dependent Claim
101 words
IN A METHOD OF RECORDING INFORMATION WHEREBY A MODULATED BEAM OF ELECTRONS IS SCANNED ACROSS A SURFACE OF AN ELECTRON BEAM SENSITIVE MATERIAL WHICH BECOMES MORE SOLUBLE IN A DEVELOPER SOLVENT WHEN IMPINGED UPON BY THE BEAM OF ELECTRONS AND TTHE ELECTRON BEAM SENSITIVE MATERIAL IS DEVELOPED WITH THE DEVELOPER SOLVENT SO AS TO REMOVE THE SOLUBILIZED PORTION THE IMPROVEMENT WHICH COMPRISES EMPLOYING IN AN ELECTRON BEAM SENSITIVE LAYERS OF SAID MATERIAL A MIXTURE CONSISTING ESSENTIALLY OF FROM ABOUT 1 TO ABOUT 50% BY WEIGHT AS BASED ON THE TOTAL WEIGHT OF THE MIXTURE OF AN ACTIVE COMPOUND OF THE STRUCTURE
Claim 3
Dependent Claim
28 words
A method according to claim 1 wherein the alkali soluble resin is selected from the group consisting of novolaks, cellulose derivatives and homopolymers and copolymers of vinyl acetAte.
Claim 4
Dependent Claim
15 words
A method according to claim 2 wherein the alkali soluble resin is a novolak resin.
Claim 5
Dependent Claim
16 words
A method according to claim 3 wherein the alkali soluble resin is a cresol-formaldehyde novolak resin.
Claim 6
Dependent Claim
22 words
A method according to claim 4 wherein the mixture contains from about 12 to about 16% by weight of the active compound.
References Cited (Backward Citations)
US3046118A
Cited
US2929708A
Cited
US2897089A
Cited
US3067349A
Cited
US3402044A
Cited
US3387975A
Cited
US3634082A
Cited
US3622322A
Cited
US3661582A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-02 | 1978-06-03 | 1978-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-02 | 1982-06-03 | 1982-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-02 | 1986-06-03 | 1986-12-03 | $7700.00 | Window Closed / Lapsed |