METHOD FOR MACHINING MR HEIGHT OF MR COMPOSITE THIN FILM MAGNETIC HEAD

PURPOSE:To obtain a method for machining an MR height of an MR composite thin film magnetic head capable of suppressing the dispersion of MR element positions in a head block and precisely machining the MR height by precisely measuring the MR element positions without using a resistance value of an...

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Bibliographic Details
Main Authors FUKAZAWA KATSUYA, TAKAKURA AKIO, WAKI YOSHIHARU, ISONO CHIHIRO, NATE KAZUO, HAGIWARA YOSHIKI
Format Patent
LanguageEnglish
Published 12.01.1996
Edition6
Subjects
DRESSING OR CONDITIONING OF ABRADING SURFACES
FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
GRINDING
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING
PERFORMING OPERATIONS
PHYSICS
POLISHING
TRANSPORTING
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Summary:PURPOSE:To obtain a method for machining an MR height of an MR composite thin film magnetic head capable of suppressing the dispersion of MR element positions in a head block and precisely machining the MR height by precisely measuring the MR element positions without using a resistance value of an MR element. CONSTITUTION:An MR test pattern 22 corresponding to the MR element and capable of optically detecting are arranged side by side on the head block 1 arranging side by side plural MR elements 21, and the MR test pattern 22 is detected optically by an image process part 61, and the dispersion in the MR element 21 positions is detected indirectly. The MR elements 21 are ground by using a lapping plate 60 while displacing the head block 1 so that the dispersion in plural detected MR elements 21 positions falls into an allowable value by an actuator 5.
Bibliography:Application Number: JP19940131870