Magneto-optical disk and method of manufacturing the same

G - Physics – 11 – B

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

G11B 7/24 (2006.01) G11B 11/105 (2006.01) G11B 23/00 (2006.01)

Patent

CA 2041680

A magneto-optical disk has a substrate whereon a recording medium is formed, and a depression is formed on the substrate on the inside of the recording medium of the substrate. A center hub is installed on the depression such that the center hub is substantially level with a protective- resin layer covering the recording medium. On the center hub, a flying head performs CSS (Contact-Start-and-Stop). This configuration of the disk eliminates the occurrence of dust due to abrasion and head crash, and achieves stable CSS. A method of manufacturing the magneto-optical disk is also disclosed, wherein the protective-resin layer is formed after installing the center hub on the depression. In this method, since a space is not produced between the center hub and the protective-resin layer, stable flying characteristics are obtained. And a magneto-optical disk is disclosed, whereon small physical bumps and pits are formed on the substrate on the inside of the recording medium, which prevents the flying head from sticking to the disk. A method of manufacturing the magneto-optical disk by using a stamper, which permits the disk to be mass-produced, is also disclosed.

isque magnéto-optique comprenant un substrat sur lequel est formé un support d'enregistrement. Une dépression est formée sur le substrat à l'intérieur du support d'enregistrement du substrat. Un noyau occupe le centre de la dépression et se trouve ainsi sensiblement au niveau d'une couche protectrice de résine couvrant le support d'enregistrement. Sur le noyau, une tête flottante assure les fonctions contact, marche et arrêt (CMA). Cette configuration du disque supprime la présence de poussière provenant du frottement et de l'écrasement de la tête et permet l'exécution stable des fonctions CMA. On présente également une méthode de fabrication du disque magnéto-optique, suivant laquelle la couche protectrice de résine est formée après l'installation du noyau central sur la dépression : l'absence d'espace entre le noyau et la couche protectrice de résine permet la stabilité de la tête flottante. On présente un disque magnéto-optique comportant de petites aspérités et dépressions sur le substrat, à l'intérieur du support d'enregistrement, ce qui empêche la tête flottante d'adhérer au disque. On expose également une méthode pour fabriquer le disque magnéto-optique au moyen d'une matrice, ce qui en permet la production en série.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Magneto-optical disk and method of manufacturing 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 Magneto-optical disk and method of manufacturing the same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magneto-optical disk and method of manufacturing the same will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1755396

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.