MAGNETIC RECORDING HEAD AND MAGNETIC DISK STORAGE DEVICE

PROBLEM TO BE SOLVED: To provide a magnetic recording head having a small head fringe magnetic field without reducing a recording magnetic field. SOLUTION: A side-top gap STG is narrower than twice a trailing gap TRG, and preferably has the same width as the trailing gap TRG. Also, a side-bottom gap...

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Bibliographic Details
Main Authors TAGAWA IKUYA, MARUYAMA YOJI, MOCHIZUKI MASABUMI
Format Patent
LanguageEnglish
Published 23.06.2011
Subjects
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
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Summary:PROBLEM TO BE SOLVED: To provide a magnetic recording head having a small head fringe magnetic field without reducing a recording magnetic field. SOLUTION: A side-top gap STG is narrower than twice a trailing gap TRG, and preferably has the same width as the trailing gap TRG. Also, a side-bottom gap SBG is formed larger than the side-top gap STG, and smaller than twice a pole width PW. Further, a bottom aperture width BAW of a magnetic shield 29 at the end of a main magnetic pole 21 in a leading direction LD is formed larger than a top aperture width TAW of the magnetic shield 29 at the end of the main magnetic pole 21 in a trailing direction TR. COPYRIGHT: (C)2011,JPO&INPIT
Bibliography:Application Number: JP20090281699