VERTICAL MAGNETIC HEAD

PURPOSE:To omit an erase head by providing the auxiliary magnetic poles at both sides of a track part together with layers magnetized toward the surface of a recording medium. CONSTITUTION:A main magnetic pole 5 is a metallic thin film of 'Permalloy(R)', etc. having high saturated magnetic...

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Bibliographic Details
Main Authors TERASAWA TAKESHI, NAKAJIMA OSAMU
Format Patent
LanguageEnglish
Published 13.11.1986
Subjects
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
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Summary:PURPOSE:To omit an erase head by providing the auxiliary magnetic poles at both sides of a track part together with layers magnetized toward the surface of a recording medium. CONSTITUTION:A main magnetic pole 5 is a metallic thin film of 'Permalloy(R)', etc. having high saturated magnetic flux density and high permeability. The lower end face 51 of the pole 5 has the function for record/reproduction against a magnetized layer 2 of a recording medium 1. While the upper end face of the pole 5 is joined to a horizontal bar 60 of an adverse L-shaped auxiliary magnetic pole 6 made of a high permeability material like ferrite, etc. The lower end face 62 of the vertical bar of the pole 6 has a large area then the face 51 and set at both sides of a signal track part 10 recorded by the pole 5 and enclosing this part 10. Thus a magnetic path 9 forms a closed path passing through a high permeability layer 3 with high efficiency in both record and reproduction modes.
Bibliography:Application Number: JP19850098622