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Magnetic recording medium, method of manufacturing the same, and magnetic recording/reproducing apparatus

a technology of magnetic recording layer and magnetic recording medium, which is applied in the direction of photomechanical equipment, instruments, and heads with metal sheet cores, etc., can solve the problem of degrading the electromagnetic conversion characteristics of the magnetic recording layer

Inactive Publication Date: 2009-06-04
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention relates to a magnetic recording medium and a magnetic recording / reproduction apparatus. The technical effects of this invention include the use of a silicon-based protective layer on the magnetic recording layer, which improves the performance and reliability of the magnetic recording medium. The manufacturing method of this invention involves patterning the magnetic recording layer and silicon-based protective layer using a photoresist and dry etching techniques, resulting in a more precise and accurate pattern. The use of this protective layer also allows for easier handling and processing of the magnetic recording medium.

Problems solved by technology

This degrades the electromagnetic conversion characteristics of the magnetic recording layer.

Method used

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  • Magnetic recording medium, method of manufacturing the same, and magnetic recording/reproducing apparatus
  • Magnetic recording medium, method of manufacturing the same, and magnetic recording/reproducing apparatus
  • Magnetic recording medium, method of manufacturing the same, and magnetic recording/reproducing apparatus

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Embodiment Construction

[0021]A magnetic recording medium of the present invention is a magnetic recording medium which includes a nonmagnetic substrate, and a magnetic recording layer formed on the nonmagnetic substrate and patterned into a track shape or dot shape, and which further has a silicon-based protective layer formed on at least a surface of the magnetic recording layer, which is opposite to the nonmagnetic substrate.

[0022]A magnetic recording / reproduction apparatus of the present invention is an example of an apparatus using the magnetic recording medium described above, and has the above magnetic recording medium and a recording / reproduction head.

[0023]A magnetic recording medium manufacturing method of the present invention is an example of a method of manufacturing the magnetic recording medium described above, and comprises forming a magnetic recording layer on a nonmagnetic substrate, forming a photoresist on the magnetic recording layer, patterning the photoresist by a photolithography te...

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Abstract

A magnetic recording medium is obtained by easily patterning a magnetic recording layer without deteriorating its electromagnetic conversion characteristics, by forming a silicon-based protective film between the magnetic recording layer and a photoresist, and performing dry etching and oxygen plasma processing.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a divisional of co-pending U.S. application Ser. No. 11 / 135,258, filed May 24, 2005, and for which priority is claimed under 35 U.S.C. §121. This application is based upon and claims the benefit of priority under 35 U.S.C. § 119 from the prior Japanese Patent Application No. 2004-183933, filed Jun. 22, 2004, the entire contents of both applications are incorporated herein by reference in their entireties.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to a magnetic recording medium for use in, e.g., a hard disk apparatus using the magnetic recording technique and, more particularly, to a magnetic recording medium having a magnetic recording layer so patterned that magnetic structures such as adjacent tracks are physically separated, a method of manufacturing the same, and a magnetic recording / reproduction apparatus using the same.[0004]2. Description of the Related Art[0005...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): G11B5/33G03F7/20B05D3/00G11B5/00G11B5/012G11B5/147G11B5/66G11B5/72G11B5/82G11B5/855
CPCB82Y10/00G11B5/012G11B5/72Y10T428/1164G11B5/82G11B5/855G11B2005/0029G11B5/743G11B5/7264
Inventor YAMAMOTO, TAKAYUKISAKURAI, MASATOSHIKAMATA, YOSHIYUKI
Owner KK TOSHIBA
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