Transducer for perpendicular magnetic recording

Details Transducer for perpendicular magnetic recording Transducer for perpendicular magnetic recording

1980-01-24

1982-02-23

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Head

Gap spacer

360113, 360125, G11B 525, G11B 530, G11B 522

Patent

active

043171486

ABSTRACT:
The transducer for perpendicular magnetic recording comprises a core of high permeability material having a recording pole and a flux return pole spaced apart and connected by an intermediate member forming an inverted generally U-shaped core. The cross sectional area of the flux return pole is substantially greater than that of the recording pole. Current applied to a coil wound around the recording pole generates flux for recording on the magnetic medium. A similarly shaped second core may be disposed on the opposite side of the medium with respect to the first core for providing a flux return path for the first core. A sub-core of high permeability material mounted on the flux return pole forms a gap with the recording pole to provide a ring-type head for data recovery. Current applied to a coil wound on the sub-core saturates the sub-core to render it ineffective during perpendicular magnetic writing. During reading the sub-core winding is de-energized, transforming the perpendicular magnetic recording head into a ring-type reading head. An alternative reading embodiment utilizes magneto-resistive elements disposed between the recording pole and the flux return pole.

REFERENCES:
patent: 2585932 (1952-02-01), Hare
patent: 3371164 (1968-02-01), Makimura
patent: 4138702 (1979-02-01), Magnenet
patent: 4222084 (1980-09-01), Nakagawa et al.

Affiliated with

Also associated with

Rating

Transducer for perpendicular magnetic recording does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1776607