US 2004/0136107 A1 · Magnetic recording method, magnetic recording device, and magnetic recording medium

Abstract

A magnetic recording medium recording method is disclosed for recording magnetic information in a recording layer of a magnetic recording medium by using a magnetic head while heating the recording layer by light from an optical head. The magnetic recording medium includes a positioning magnetic layer having magnetism and is used for positioning the optical head. The magnetic recording medium recording method includes a first step of moving the magnetic head to a predetermined position on the magnetic recording medium, a second step of supplying a positioning magnetic field Hr from the magnetic head to the positioning magnetic layer for positioning the optical head, and a third step of outputting positioning light Pr from the optical head for positioning the optical head, producing a magnetic optical effect with respect to the positioning magnetic layer magnetized by the positioning magnetic field Hr, and controlling the optical head so as to face a position of the magnetic head based on a detection result of the magnetic optical effect.

Claims15

Dependent claims

A magnetic recording medium recording method for recording magnetic information in a recording layer of a magnetic recording medium by using a magnetic head while heating the recording layer by light from an optical head,

wherein the magnetic recording medium includes a positioning magnetic layer having magnetism and is used for positioning the optical head,
said magnetic recording medium recording method comprising:
a first step of moving the magnetic head to a predetermined position on the magnetic recording medium;
a second step of supplying a positioning magnetic field Hr from the magnetic head to the positioning magnetic layer for positioning the optical head;
and
a third step of outputting positioning light Pr from the optical head for positioning the optical head, producing a magnetic optical effect with respect to the positioning magnetic layer magnetized by the positioning magnetic field Hr, and controlling the optical head so as to face a position of the magnetic head based on a detection result of the magnetic optical effect.

3 more elements

A magnetic recording device including a magnetic recording medium, a magnetic head that records magnetic information in a recording layer of the magnetic recording medium, a magnetic head driving means that moves the magnetic head to a predetermined position on the magnetic recording medium, an optical head that is arranged at a position facing the magnetic head with the magnetic recording medium in between and emits light to the recording layer to heat the recording layer during recording of the magnetic information, and an optical head driving means that moves the optical head to the position facing the magnetic head,

wherein the magnetic recording medium includes a positioning magnetic layer having magnetism and being used for positioning the optical head to the position facing the magnetic head,
said magnetic recording device further comprising an optical head position control mechanism configured to control the position of the optical head so that the position of the optical head is opposite to the position of the magnetic head by utilizing a magnetic optical effect occurring in accordance with a magnetic state of the positioning magnetic layer.

Dependencies are inferred from the claim text.

Magnetic recording method, magnetic recording device, and magnetic recording medium

Life of this patent

Magnetic recording method, magnetic recording device, and magnetic recording medium

Life of this patent

Abstract

Claims15