Dynamic magnetic information storage or retrieval – Head – Core
Reexamination Certificate
2005-05-23
2008-12-09
Miller, Brian E (Department: 2627)
Dynamic magnetic information storage or retrieval
Head
Core
C360S125300, C360S125720
Reexamination Certificate
active
07463450
ABSTRACT:
A thin film magnetic head has a configuration in which a main magnetic pole film having a magnetic pole end portion on a medium opposing surface (ABS) side facing a magnetic disk, a write shield film facing the magnetic pole end portion so as to form a recording gap film on the medium opposing surface side, and a thin film coil wound around at least a part of the write shield film are laminated. Further, the thin film magnetic head has an upper yoke magnetic pole film whose size is larger than that of the main magnetic pole film at a part more distant from the ABS than the recording gap film, and this upper yoke magnetic pole film is bonded to the side of the main magnetic pole film close to the thin film coil. In the upper yoke magnetic pole film, an end portion on the ABS side is retracted in a direction apart from the ABS in accordance with an increase in film thickness which is measured from the surface of the main magnetic pole film.
REFERENCES:
patent: 4656546 (1987-04-01), Mallory
patent: 4672493 (1987-06-01), Schewe
patent: 6504675 (2003-01-01), Shukh et al.
patent: 6631054 (2003-10-01), Miyazaki et al.
patent: 6791793 (2004-09-01), Chen et al.
patent: 2001/0017751 (2001-08-01), Miyazaki et al.
patent: 2002/0080525 (2002-06-01), Sato et al.
patent: 2003/0189787 (2003-10-01), Matono et al.
patent: 2004/0150912 (2004-08-01), Kawato et al.
patent: 2004/0264048 (2004-12-01), Matono et al.
patent: 2005/0007696 (2005-01-01), Chen et al.
patent: 2005/0013044 (2005-01-01), Hirata et al.
patent: 2005/0068675 (2005-03-01), Sasaki et al.
patent: 2005/0083607 (2005-04-01), Sasaki et al.
patent: 2005/0128639 (2005-06-01), Sasaki et al.
patent: 2005/0157423 (2005-07-01), Sasaki et al.
patent: 2005/0185337 (2005-08-01), Sasaki et al.
patent: 2005/0259357 (2005-11-01), Kameda
patent: 2005/0280938 (2005-12-01), Sasaki et al.
patent: 2006/0103980 (2006-05-01), Sasaki et al.
patent: 2006/0139801 (2006-06-01), Kamada
patent: 2007/0030602 (2007-02-01), Matono
patent: 2003-203311 (2003-07-01), None
patent: 2003-242607 (2003-08-01), None
patent: 2004-94997 (2004-03-01), None
Itoh Hiroyuki
Kamigama Takehiro
Sasaki Yoshitaka
Shimizu Tatsushi
Headweay Technologies, Inc.
Miller Brian E
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Sae Magnetics (H.K.) Ltd.
LandOfFree
Thin film magnetic head does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Thin film magnetic head, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thin film magnetic head will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4048196