公开(公告)号：US5853872A

公开(公告)日：1998-12-29

申请号：US768867

申请日：1996-12-17

Applicant: Takumi Shimamori ,  Yoko Ikeda ,  Yoshinori Seki ,  Takeshi Kuriwada

Inventor： Takumi Shimamori ,  Yoko Ikeda ,  Yoshinori Seki ,  Takeshi Kuriwada

IPC: G11B7/24 ,  G11B11/105 ,  G11B5/64 ,  G11B5/66 ,  G11B5/70 ,  G11B11/00

CPC classification number: G11B11/10593 ,  G11B11/10584 ,  G11B11/10589 ,  G11B7/24 ,  Y10T428/26

Abstract: A magneto-optical recording medium having, in the following order, a substrate, a magneto-optical recording layer having a Curie temperature of not less than 220.degree. C., and a reflective layer mainly composed of Ag and having a refractive index of not more than 0.5 at a wavelength of less than 600 nm is written with an external magnetic field and a laser beam with a wavelength of less than 600 nm while read-out is with the laser beam also at a wavelength less than 600 nm.

Abstract translation: 一种磁光记录介质，具有以下顺序，具有基板，居里温度不低于220℃的磁光记录层，以及主要由Ag构成且折射率不大的反射层 在波长小于600nm的情况下，用外部磁场和波长小于600nm的激光束写入大于0.5nm的波长，同时读出的波长也小于600nm。

公开(公告)号：US5535180A

公开(公告)日：1996-07-09

申请号：US349373

申请日：1994-12-05

Applicant: Takumi Shimamori ,  Naoyuki Uchida

Inventor： Takumi Shimamori ,  Naoyuki Uchida

IPC: G11B11/105 ,  G11B11/00

CPC classification number: G11B11/1055 ,  G11B11/10526 ,  G11B11/10584

Abstract: A magneto-optical recording and readout method involves making a tape-type magneto-optical recording medium run in front of at least a single pole of a permanent magnet or an electromagnet at a position forwards of an optical head relative to the running direction of the recording medium, without contacting the magnet so as to cross at a substantial right angle to magnetic force lines, thereby initializing the recording medium or erasing information therein. The tape-type magneto-optical recording medium has at least a magneto-optical recording layer on one side of a base film having a thickness of not more than 50 .mu.m. Recording of information is effected by irradiating beams to the recording medium under application of an external magnetic field of not more than 24 kA/m.

Abstract translation: 磁光记录和读出方法包括使磁带式磁光记录介质在永磁体或电磁体的至少一极的前方运行在光学头的前方位置相对于 记录介质，而不与磁体接触，以与磁力线大致直角交叉，从而初始化记录介质或擦除信息。 磁带式磁光记录介质至少具有厚度不大于50μm的基膜一侧的磁光记录层。 通过在不超过24kA / m的外部磁场的情况下将光束照射到记录介质来进行信息的记录。