Dynamic magnetic information storage or retrieval – Head – Core
Reexamination Certificate
2006-06-27
2006-06-27
Cao, Allen (Department: 2652)
Dynamic magnetic information storage or retrieval
Head
Core
C360S317000
Reexamination Certificate
active
07068467
ABSTRACT:
Disclosed is a magnetic disk apparatus including a magnetic reproducing head portion, and a magnetic recording head including an upper magnetic core having a end portion and a rear portion. As a resist for a frame which is used for forming the rear portion, a negative resist or an electron beam resist is used, whereby the frame is formed without any adverse effect of halation from a coil insulating film. That is, it is possible to manufacture a magnetic recording head in which the rear portion of an upper magnetic core is not emerged at the face opposed to a medium, and hence to obtain a magnetic disk apparatus exhibiting an areal recording density of 5 Gbit/in2or more by mounting a magnetic recording/reproducing head including such a magnetic recording head.
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Iwakura Tadayuki
Koyama Naoki
Morijiri Makoto
Okada Tomohiro
Okai Tetsuya
Cao Allen
Hitachi Global Storage Technologies Japan Ltd.
Kenyon & Kenyon LLP
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