MAGNETO-RESISTANCE EFFECT TYPE MAGNETIC HEAD

PURPOSE:To obtain a magnetic head which is suited to reproduction of the record information of high density by forming an insulated layer existing between a magneto-resistance effect element and an upper shielding layer with different levels of thickness between a signal detecting part and a termina...

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Bibliographic Details
Main Author KUME TOMIO
Format Patent
LanguageEnglish
Published 06.04.1984
Subjects
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
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Summary:PURPOSE:To obtain a magnetic head which is suited to reproduction of the record information of high density by forming an insulated layer existing between a magneto-resistance effect element and an upper shielding layer with different levels of thickness between a signal detecting part and a terminal part of said effect element. CONSTITUTION:An insulated layer 7 existing between a magneto-resistance effect element 3 and an upper shielding layer 2 has different levels of thickness between a signal detecting part 31 and a terminal part 32. The thickness of the part 32 is larger than that of the part 31 by an amount shown by a bidirectional arrow alpha in the figure. With such a structure, the distance (g) is less than 1mum and can be further reduced as long as the insulation is secured between insulated layers 6 and 7. Thus the frequency characteristics of a magnetic head can be improved with no limitation given to the thickness of the layer 7 at the part 32.
Bibliography:Application Number: JP19820171237