Showa Denko K.k.

Yoshiko Takahashi

Masato Fukushima

Tomoo Shige

Shinichi Ishibashi

Naoyuki Imai

Yuki Hirai

A method of manufacturing a magnetic recording medium is provided, which include: forming a magnetic layer on the surface of a nonmagnetic substrate; forming a groove in which a nonmagnetic section is formed by etching a portion corresponding to a formation region of the nonmagnetic section in the magnetic layer and a magnetic recording section formed of the magnetic layer; applying a resin having an active energy ray curable functional group to the surface of the magnetic recording section so as to fill the groove; pressing a plate material against the resin so that the smooth surface of the plate material is in contact with the surface of the resin to make the surface of the resin smooth; removing the plate material from the resin; and forming the nonmagnetic section in the groove by etching and removing a portion located above the surface of the magnetic recording section in the resin having a smooth surface.

Method of manufacturing magnetic recording medium, and magnetic recording/reproducing device

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.

Growing community of inventors

Ichihara, Japan

Yoshiko Takahashi