Dynamic magnetic information storage or retrieval – Head – Core
Reexamination Certificate
2005-10-25
2005-10-25
Chen, Tianjie (Department: 2652)
Dynamic magnetic information storage or retrieval
Head
Core
Reexamination Certificate
active
06958886
ABSTRACT:
A main magnetic pole layer is formed on an insulating layer flattened into a high-flatness surface, and a yoke layer having a large film thickness is formed on the main magnetic pole layer independently of the main magnetic pole. The main magnetic pole layer has a front end surface formed in a shape with a width size gradually increasing in a direction of track width as the front end surface departs farther away from an auxiliary magnetic pole layer. A perpendicular magnetic recording head can be provided which can suppress the occurrence of fringing in a recording pattern, and can form the main magnetic pole layer with high pattern accuracy, and can satisfactorily introduce a recording magnetic field to a fore end of the main magnetic pole layer.
REFERENCES:
patent: 4546398 (1985-10-01), Toda et al.
patent: 4636897 (1987-01-01), Nakamura et al.
patent: 4873599 (1989-10-01), Sueoka
patent: 5218497 (1993-06-01), Tanabe et al.
patent: 5463518 (1995-10-01), Otomo et al.
patent: 5742998 (1998-04-01), Jones, Jr.
patent: 6101067 (2000-08-01), Matsuzono et al.
patent: 6259583 (2001-07-01), Fontana et al.
patent: 6292329 (2001-09-01), Sato et al.
patent: 6297938 (2001-10-01), Niijima
patent: 6339872 (2002-01-01), Chang et al.
patent: 6477005 (2002-11-01), Sasaki
patent: 6477008 (2002-11-01), Change et al.
patent: 6480355 (2002-11-01), Kamijima
patent: 6513228 (2003-02-01), Khizroev et al.
patent: 03017807 (1991-01-01), None
patent: 04001924 (1992-01-01), None
patent: 04017105 (1992-01-01), None
patent: 04134610 (1992-05-01), None
patent: 05174332 (1993-07-01), None
patent: 8-106613 (1996-04-01), None
patent: 10-320720 (1998-12-01), None
Gochou Hideki
Kobayashi Kiyoshi
Sato Kiyoshi
Takahashi Toru
Watanabe Toshinori
Alps Electric Co. ,Ltd.
Brinks Hofer Gilson & Lione
Chen Tianjie
LandOfFree
Perpendicular magnetic recording head having main magnetic... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Perpendicular magnetic recording head having main magnetic..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Perpendicular magnetic recording head having main magnetic... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3469131