PRODUCTION OF MAGNETIC RECORDING MEDIUM AND VAPOR DEPOSITION DEVICE USED THEREFOR

• Main Authors: ITOU YUKA, OSONE KOZO
• Format: Patent
• Language: English
• Published: 14.02.1997
• Edition: 6
• Subjects: CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; INFORMATION STORAGE; INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; METALLURGY; PHYSICS; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION

PROBLEM TO BE SOLVED: To improve the efficiency of vapor deposition of a magnetic material in the production process of a vapor deposition type magnetic recording medium. SOLUTION: A magnetic recording medium is produced by vapor deposition of a magnetic material vaporized from a vapor deposition source 23 on a nonmagnetic supporting body. In this method, a crucible 22 as the vapor deposition source has side walls 22A, 22B facing each other which are erected to the same height. Electron beams 13A, 13B are emitted in the direction crossing the facing direction of the two side walls 22A, 22B to vaporize the magnetic material 6 of the vapor deposition source 23.