MAGNETIC RECORDING SYSTEM

MAGNETIC RECORDING SYSTEM

PURPOSE:To prevent occurrence of problems of secondary distortion even when a magnetic recording medium of high ratio of orientation in vertical direction is used by making frequency of erasing current for precedent erasing greater than frequency corresponding to a wavelength which is 1/2 of the sho...

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1. Verfasser: YAMAMORI KAZUTAKE
Format: Patent
Sprache:eng
Schlagworte:
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
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creator YAMAMORI KAZUTAKE
description PURPOSE:To prevent occurrence of problems of secondary distortion even when a magnetic recording medium of high ratio of orientation in vertical direction is used by making frequency of erasing current for precedent erasing greater than frequency corresponding to a wavelength which is 1/2 of the shortest wavelength for information recording. CONSTITUTION:A magnetic recording medium 11 has an axis of easy magnetization in the direction perpendicular to the surface of film of a magnetic layer, and rectangular ratio in perpendicular direction is above 0.6. Rectangular ratio in perpendicular direction of the magnetic recording medium after correcting demagnetization is set to above 0.6 and an erasing head 15 is placed at a position preceding a recording and reproducing head 14. Current of frequency above frequency corresponding to wavelength of 1/2 of shortest wavelength of recording is impressed to the erasing head 15 before recording, and former information is suppressed without causing problems of secondary distortion etc.
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CONSTITUTION:A magnetic recording medium 11 has an axis of easy magnetization in the direction perpendicular to the surface of film of a magnetic layer, and rectangular ratio in perpendicular direction is above 0.6. Rectangular ratio in perpendicular direction of the magnetic recording medium after correcting demagnetization is set to above 0.6 and an erasing head 15 is placed at a position preceding a recording and reproducing head 14. 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subjects INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
title MAGNETIC RECORDING SYSTEM
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