The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Aug. 30, 2011

Filed:

Oct. 06, 2009
Applicants:

Shinichi Ishibashi, Tokyo, JP;

Yoshiko Takahashi, Ichihara, JP;

Naoyuki Imai, Ichihara, JP;

Masato Fukushima, Chiba, JP;

Inventors:

Shinichi Ishibashi, Tokyo, JP;

Yoshiko Takahashi, Ichihara, JP;

Naoyuki Imai, Ichihara, JP;

Masato Fukushima, Chiba, JP;

Assignee:

Showa Denko K.K., Tokyo, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B 5/82 (2006.01);
U.S. Cl.
CPC ...
Abstract

There is provided a method for manufacturing a magnetic recording medium which can easily produce a magnetic recording medium, the magnetic recording medium having a plurality of magnetically separated recording layers suitable as the recording layers in a discrete track medium or patterned medium, and also having excellent surface flatness, in which spaces between the adjacent recording layers are filled in with a non-magnetic material. Such a method for manufacturing a magnetic recording medium is a method for manufacturing a magnetic recording medium () including: a step for forming a magnetic layer on top of a non-magnetic substrate (), and then forming a resist pattern constituted of a non-magnetic material on top of the magnetic layer; a step for forming a concave section (), which is to become a separation layer (), and a plurality of recording layers () that are magnetically separated in plan view by the concave section () by removing the magnetic layer that is exposed from the resist pattern; and a step for forming the separation layer () by melting the resist pattern to prepare a melted resist and filling in the concave section () with the melted resist, followed by curing of the melted resist.


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