Perpendicular magnetic recording head and magnetic disc...

Details Perpendicular magnetic recording head and magnetic disc... Perpendicular magnetic recording head and magnetic disc...

2008-07-01

2008-07-01

Feild, Joseph (Department: 2627)

Dynamic magnetic information storage or retrieval

Head

Core

Reexamination Certificate

active

07394620

ABSTRACT:
A magnetic disc apparatus includes a double layered perpendicular recording medium including a soft magnetic underlayer and a perpendicular recording layer, which are formed on a substrate, and a perpendicular magnetic recording head including a main pole generating a recording magnetic field in a perpendicular direction, and an auxiliary pole connected to the main pole on a trailing side to the main pole and having a multilayered structure in which a nonmagnetic layer is sandwiched between magnetic layers.

REFERENCES:
patent: 4873599 (1989-10-01), Sueoka
patent: 5168409 (1992-12-01), Koyama et al.
patent: 5311387 (1994-05-01), Mallary
patent: 6697221 (2004-02-01), Sato et al.
patent: 6954340 (2005-10-01), Shukh et al.
patent: 7075756 (2006-07-01), Mallary et al.
patent: 2001/0017746 (2001-08-01), Nishida et al.
patent: 2002/0036863 (2002-03-01), Takeo et al.
patent: 2002/0036871 (2002-03-01), Yano et al.
patent: 2002/0176214 (2002-11-01), Shukh et al.
patent: 2003/0026039 (2003-02-01), Okada et al.
patent: 2003/0043513 (2003-03-01), Lin
patent: 62-052710 (1987-03-01), None
patent: 2002-10007 (2002-04-01), None
patent: 2004-103204 (2004-04-01), None
patent: 2004-199816 (2004-07-01), None
Japanese Office Action dated Jan. 27, 2006 for Appln. No. 200410031552.5.
Japanese Office Action dated Sep. 20, 2005 for Appln. No. 2003-124116.
Japanese Office Action dated 2003-124116 for Appln. No. 2003-124116.
Austrian Patent Office Search Report for Application No. 200401343-9 dated Sep. 10, 2004.

Affiliated with

Also associated with

Rating

Perpendicular magnetic recording head and magnetic disc... 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 and magnetic disc..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Perpendicular magnetic recording head and magnetic disc... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2806202