Magnetic recording medium and method of making the same

Details Magnetic recording medium and method of making the same Magnetic recording medium and method of making the same

1999-02-04

2000-02-29

Le, Thien Minh

Registers

Records

Magnetic

235449, 360 2, G06K 1906

Patent

active

060298952

ABSTRACT:
A magnetic recording medium, and a method of making the same, including an irreversible recording layer which undergoes an irreversible change of saturation magnetization upon heating. The magnetic recording medium includes on at least a portion of a substrate an irreversible recording layer which contains an irreversible recording material undergoing an irreversible change of saturation magnetization upon heating. The irreversible recording layer includes at least in part a fixed information recording region for recording the fixed information of the medium. In the fixed information recording region, a plurality of heated bars whose saturation magnetization has been irreversibly changed are arrayed substantially parallel to each other. The array pattern of the heated bars or the array pattern of unheated bars disposed between adjacent ones of the heated bars contains the fixed information encoded in a frequency modulation process or phase modulation process.

REFERENCES:
patent: 4188211 (1980-02-01), Yamaguchi
patent: 4239959 (1980-12-01), Gutterman
patent: 4256955 (1981-03-01), Giraud et al.
patent: 4367402 (1983-01-01), Giraud et al.
patent: 5471044 (1995-11-01), Hotta et al.
patent: 5559247 (1996-09-01), Matsumoto et al.
patent: 5691272 (1997-11-01), Matsumoto et al.

Affiliated with

Also associated with

Rating

Magnetic recording medium and method of making the same does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Magnetic recording medium and method of making the same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic recording medium and method of making the same will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-674934