Magnetic recording medium and magnetic recording/reproducing...

Details Magnetic recording medium and magnetic recording/reproducing... Magnetic recording medium and magnetic recording/reproducing...

2005-12-06

2005-12-06

Hudspeth, David (Department: 2651)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

Reexamination Certificate

active

06972923

ABSTRACT:
A magnetic recording medium has a substrate, and a servo signal recording magnetic layer whose magnetization is oriented in a direction perpendicular to a surface thereof, a non-magnetic layer and a data recording magnetic layer, which are stacked on the substrate in the order mentioned. The servo signal recording magnetic layer has a coercivity higher than that of the data recording magnetic layer. The servo signal recording magnetic layer has servo tracks formed with a track pitch Tps, the servo tracks adjacent to each other in a track width direction being magnetized to opposite directions perpendicular to the film surface.

REFERENCES:
patent: 4924334 (1990-05-01), Diepers et al.
patent: 5583727 (1996-12-01), Parkin
patent: 7-201002 (1995-08-01), None
patent: 2001-195702 (2001-07-01), None
U.S. Appl. No. 10/396,514, filed Mar. 26, 2003, Akiyama et al.
U.S. Appl. No. 10/668,231, filed Sep. 24, 2003, Kikitsu et al.

Affiliated with

Also associated with

Rating

Magnetic recording medium and magnetic recording/reproducing... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Magnetic recording medium and magnetic recording/reproducing..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic recording medium and magnetic recording/reproducing... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3504318