MANUFACTURE OF MAGNETIC HEAD CORE

PURPOSE:To reduce or eliminate strain due to the difference in thermal expansion between a core material and a glass material by notching a part of glass packed in core blocks. CONSTITUTION:While parts with track width 5 are left, core blocks 1 and 2 are notched, and those notched parts are charged...

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Bibliographic Details
Main Author MORITA SHIGETOSHI
Format Patent
LanguageEnglish
Published 01.12.1982
Subjects
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
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Summary:PURPOSE:To reduce or eliminate strain due to the difference in thermal expansion between a core material and a glass material by notching a part of glass packed in core blocks. CONSTITUTION:While parts with track width 5 are left, core blocks 1 and 2 are notched, and those notched parts are charged with reinforcing glass 3. After escape grooves 4 having less width than the notching width are made in either of said core blocks 1 and 2, the unnecessary part of the charged glass is removed. Then, a nonmagnetic layer for obtaining gap width is provided and the core blocks in an abutting state are melt-stuck by heating. The melt-stuck core block is cut into magnetic heads. Thus, the cracking of the glass part or core part, occurring during work after the melt-sticking, is suppressed to >=2%.
Bibliography:Application Number: JP19810077814