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Title:
RECORDING MEDIUM FOR VERTICAL MAGNETIC RECORD
Document Type and Number:
Japanese Patent JPS55125536
Kind Code:
A
Abstract:

PURPOSE: To make it possible to perform recording and reproduction by use of a head having a simple structure, by arraying magnetic flux focusing substances in the lower side of the magnetic recording layer, in the recording medium for vertical magnetic record which is made by forming a magnetic recording layer on the surface of a non-magnetic basic substance.

CONSTITUTION: Numbers of dot-like magnetic flux focusing substances 3 consisting of material of high magnetic permeability such as permalloy, etc. are arrayed on the basic substance 2 consisting of non-magnetic material (plastic, glass, etc.) (it is desirable to make them form a line at a fixed pitch along the track.), on which a magnetic recording layer 4 having thickness of 0.1W3μ or so is formed by vertically placing an easy magnetizing axis, and it is made a recording medium 1. The afore-said medium 1 is able to easily record and reproduce by use of a vertical magnetic recording and reproducing head 7 of simple structure which has been made by winding a coil 6 around the iron core 5. In this regard, as far as the aforesaid magnetic flux focusing substances 3 are concerned, it is allowed to array them on the reverse side of the basic substance 2 and also to use them as a line shape, as well.


Inventors:
ARAI YOSHIHIRO
Application Number:
JP3072479A
Publication Date:
September 27, 1980
Filing Date:
March 16, 1979
Export Citation:
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Assignee:
FUJI PHOTO FILM CO LTD
International Classes:
G11B5/73; G11B5/00; G11B5/64; G11B5/667; G11B5/735; G11B5/738; G11B5/74; (IPC1-7): G11B5/70
Domestic Patent References:
JPS5434205A1979-03-13



 
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