Method of manufacturing a magnetic recording medium and a semico

Details Method of manufacturing a magnetic recording medium and a semico Method of manufacturing a magnetic recording medium and a semico

1996-10-04

1998-06-02

Loring, Susan A.

Etching a substrate: processes

Forming or treating article containing magnetically...

369121, 427127, B44C 122, G11B 700, B05D 512

Patent

active

057594198

ABSTRACT:
A method of manufacturing a magnetic recording medium having at least a magnetic layer, optionally by means of an underlayer, on a non-magnetic substrate, and occasionally having a protective layer disposed on the magnetic layer, comprises irradiating to the surface of the non-magnetic substrate, the underlayer, the magnetic layer, the protective layer or the magnetic recording medium, a laser beam from a semiconductor laser module that moves relatively to the non-magnetic substrate, thereby applying a texturing; and a semiconductor laser texturing apparatus comprises a substrate rotating mechanism, a semiconductor laser module including a semiconductor laser beam source, a collimator for converting a semiconductor laser beam into a parallel beam and a light focusing mechanism for irradiating the laser beam to a projection-forming surface of a substrate supported rotatably by the substrate rotating mechanism, and a relative moving mechanism for the substrate supported rotatably by the substrate rotating mechanism and the semiconductor laser module.

REFERENCES:
Patent Abstracts of Japan, P-field, vol. 17, No. 505, JP 5-128509 A, Sep. 10, 1993.
Search report for Singapore Patent Application 9610791-7 (Austrian Patent Office, Apr. 28, 1997).

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