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Class Information
Number: 369/284
Name: Dynamic information storage or retrieval > Storage medium structure > Layered (e.g., permanent protective layer) > Radiation beam modified or controlling (e.g., photosensitve, optical track)
Description: Subject matter wherein at least one layer is either (a) responsive to incident radiation to vary a characteristic of such layer, or (b) has an information varied radiation characteristic to control a beam of radiation.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 4287316 |
Transparent resin composition for information signal recording discs |
Sep. 1, 1981 |
| 4285056 |
Replicable optical recording medium |
Aug. 18, 1981 |
| 4272574 |
Optically readable information disc |
Jun. 9, 1981 |
| 4270132 |
Information record |
May. 26, 1981 |
| 4222070 |
Recording video information on a flexible master disc |
Sep. 9, 1980 |
| 4219704 |
Record playback apparatus for optical data records |
Aug. 26, 1980 |
| 4195312 |
Recorder and antireflective record blank having an optically passive transparent layer |
Mar. 25, 1980 |
| 4179532 |
Process for producing a disc-shaped information carrier which has information in the form of a beam-reflecting structure |
Dec. 18, 1979 |
| 4164754 |
Method of manufacturing a die designed to duplicate a video frequency signal recording |
Aug. 14, 1979 |
| 4152726 |
Record disk and method for producing the same with constant width groove |
May. 1, 1979 |
| 4139382 |
Photographic sound reproduction using silver diffusion transfer |
Feb. 13, 1979 |
| 4109045 |
Information recording medium |
Aug. 22, 1978 |
| 4090031 |
Multi-layered opitcal data records and playback apparatus |
May. 16, 1978 |
| 4061889 |
Film with light sound track carrying the stereophonic sound information; ribbon light valve for providing the light sound track as well as light sound adapter for reproducing the information r |
Dec. 6, 1977 |
| 4023185 |
Ablative optical recording medium |
May. 10, 1977 |
| 4010318 |
Probe forming electron optical column having means for examining magnified image of the probe source |
Mar. 1, 1977 |
| 4001493 |
Single lens, multi-beam system and method for high resolution recording of information on a moving recording medium and article |
Jan. 4, 1977 |
| 3961315 |
Information recording system |
Jun. 1, 1976 |
| 3950621 |
Apparatus for optically reading a reflecting record carrier |
Apr. 13, 1976 |
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