METHOD OF FORMING MAGNETIZATION PATTERN OF MAGNETIC RECORDING MEDIUM, MAGNETIC RECORDING MEDIUM, MAGNETIC RECORDER, AND MASK

摘要

PROBLEM TO BE SOLVED: To provide a magnetization pattern forming method which can precisely and efficiently form a fine magnetization pattern at low cost without using the energy ray of high power and to provide a mask used therefor, in the magnetization pattern forming technique which forms the magnetization pattern on a magnetic recording medium by using a combination of local heating and external magnetic field application, and to inexpensively provide the magnetic recording medium with less defects which makes high density recording possible and a magnetic recorder in a short period. SOLUTION: The magnetization pattern consisting of a first magnetization region having an initial magnetization direction and a second magnetization region having a magnetization direction opposite to the initial magnetizing direction is obtained by: forming the initial magnetization region having the initial magnetizing direction on a magnetic recording medium with a magnetic layer by applying a first external magnetic field to magnetize the magnetic layer in a desired direction in advance; and applying thereafter a second external magnetic field while irradiating the initial magnetization region of the magnetic layer with an energy for local heating to reverse the magnetization of the heated part. The second magnetization region exceeds 50% of the initial magnetization region. COPYRIGHT: (C)2003,JPO