ELECTROLESS PLATING OF FILAMENTARY MAGNETIC RECORDS

摘要

A magnetic record having a non-magnetic substrate carrying information-storing tracks of magnetic material has a gelatinous material coating the substrate and particulate silver metal secured on the gelatinous material in accordance with the pattern of the recording tracks. The silver is provided in this pattern by coating the gelatinous material with a photographic emulsion that is subsequently exposed and developed according to the desired pattern of recording tracks.