Magnetic recording medium and magnetic recording medium...

B - Operations – Transporting – 42 – D

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B42D 15/10 (2006.01) G06K 19/06 (2006.01) G11B 5/80 (2006.01) G11B 5/84 (2006.01)

Patent

CA 2575750

A magnetic recording medium has a picture formed by a picture forming reagent in a layered body formed by a plurality of layers including a basic layer and a magnetic recording layer. The picture can be recognized from a surface of the direction opposite to the basic layer of the layered body. The picture forming reagent is distributed in the film thickness direction and has a region having a concentration gradient gradually decreasing toward the direction of the magnetic recording reading side from the center portion of the magnetic recording layer in the region of the read side from the center portion of the magnetic recording layer in the layered body.

Support d'enregistrement magnétique ayant une image formée par un réactif producteur d'image dans un corps stratifié formé de plusieurs couches, dont une couche de base et une couche d'enregistrement magnétique. L'image peut être reconnue à partir d'une surface dans la direction opposée à celle de la couche de base du corps stratifié. Le réactif producteur d'image est distribué le long de l'épaisseur du film et a une région ayant un gradient de concentration qui diminue progressivement en se rapprochant du côté de lecture de l'enregistrement magnétique à partir de la portion centrale de la couche d'enregistrement magnétique dans la région du côté de lecture en partant de la portion centrale de la couche d'enregistrement magnétique dans le corps stratifié.

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