Permanent magnet type erasing head

Details Permanent magnet type erasing head Permanent magnet type erasing head

1990-03-23

1990-10-23

Wolff, John H.

Dynamic magnetic information storage or retrieval

Head

Erase

360129, G11B 5127, G11B 5325

Patent

active

049656880

ABSTRACT:
A permanent magnet type demagnetizing head is made by successively molding a resin-magnet which forms a body having a magnetic member forming a part of a tape contact surface and a resin which forms protection member forming a remainder part of the tape contact surface, and therefore a manufacturing process is simplified, and further quality of the demagnetizing head is improved, since size precision is enhanced.

REFERENCES:
patent: 4706145 (1987-11-01), Hirabayashi et al.

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