Magnetic recording medium and magnetic recording method
AssigneeFuji Xerox Co., Ltd.
InventorsKoichi Saitoh, Teruhiko Itami, Toshifumi Kimoto, Kiyoshi Horie
Life of this patent
Estimating the term…
Abstract
In a magnetically recording and erasing the magnetic latent image on the magnetic recording medium, the magnetic recording medium includes a base layer, a first magnetic layer in which a repetitive magnetic pattern is in advance formed, and a second magnetic layer on which the magnetic latent image to be formed is thermo-magnetically formed. A method of erasing the magnetic latent image on the second magnetic layer includes the steps of simultaneously applying an external magnetic field and heat to be thermally magnetized layer of a magnetic recording medium.
Claims5
A magnetic recording medium comprising:
- a first magnetic layer having an uniform magnetization pattern therein, a non-magnetic intermediate layer, a second magnetic layer which can be thermally magnetized, and a base layer on which said three layers are formed in the stated order.
A magnetic recording method using a magnetic recording medium including a first magnetic layer having a uniform periodic magnetization pattern therein, said period magnetization pattern comprising a repetitive pattern having a repetitive unit ranging from 1 to 200 microns in at least one direction in the entire surface of said first magnetic layer, a second magnetic layer capable of being thermally magnetized, and a base layer on which the three layers are formed in the stated order, characterized by forming a magnetic latent image on said second magnetic layer by heating said second magnetic layer in the image shape.
A magnetic recording medium, comprising:
- a first magnetic layer in which a uniform periodic magnetization pattern is formed, said periodic magnetization pattern comprising a repetitive pattern having a repetitive unit ranging from 1 to 200 microns in at least one direction in the entire surface of said first magnetic layer;
- a second magnetic layer which can be thermally magnetized;
- and
- a base layer on which said two layers are formed in the stated order.
Dependencies are inferred from the claim text.