Magnetic recording medium with magnetic portions of different orientations and method of manufacturing the same

US9053733B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-9053733-B2
Application numberUS-201313863119-A
CountryUS
Kind codeB2
Filing dateApr 15, 2013
Priority dateApr 14, 2010
Publication dateJun 9, 2015
Grant dateJun 9, 2015

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  2. Abstract

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  5. First independent claim

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Abstract

Official abstract text for this publication.

According to one embodiment, a magnetic recording medium includes a data region and a servo region adjacent to the data region and including a magnetic recording layer, the magnetic recording layer including first and second patterned regions adjacent to each other, the first patterned region including a first nonmagnetic matrix and first magnetic particles dispersed in the first nonmagnetic matrix and having magnetization oriented in a first direction, the second patterned region includes a second nonmagnetic matrix and second magnetic particles dispersed in the second nonmagnetic matrix and having magnetization oriented in a second direction opposite to the first direction, sizes of the first magnetic particles being smaller than sizes of the second magnetic particles.

First claim

Opening claim text (preview).

What is claimed is: 1. A magnetic recording medium, comprising: an underlayer; an interlayer formed on the underlayer, wherein the interlayer comprises first and second regions adjacent to each other, the first region has holes that pass from a surface of the underlayer to a surface of the interlayer, and the second region has a flat surface; first magnetic particles formed on the first region, wherein the first magnetic particles comprise easy axes of magnetization; a first…

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What does patent US9053733B2 cover?
According to one embodiment, a magnetic recording medium includes a data region and a servo region adjacent to the data region and including a magnetic recording layer, the magnetic recording layer including first and second patterned regions adjacent to each other, the first patterned region including a first nonmagnetic matrix and first magnetic particles dispersed in the first nonmagnetic ma…
Who is the assignee on this patent?
Toshiba Kk
What technology area does this patent fall under?
Primary CPC classification B82Y10/00. Mapped technology areas include Operations & Transport.
When was this patent published?
Publication date Tue Jun 09 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).