G - Physics – 11 – B
Patent
G - Physics
11
B
42/2
G11B 13/04 (2006.01) F26B 13/10 (2006.01) G11B 11/105 (2006.01)
Patent
CA 2016815
The present invention provides a process for manufacturing a magneto-optic disc comprising at least a transparent substrate, a magneto-optic recording film, and a protecting film made of resin for protecting the magneto-optic recording film, comprising the steps of forming the magneto- optic recording film over the entire one side surface of the transparent substrate; providing in a portion adjacent to the peripheral edge of the magneto-optic recording film an annular groove extending in depth through the magneto-optic recording film to the transparent substrate: and forming the protecting film over the surfaces of the magneto-optic recording film and the annular groove.
Katayama Hiroyuki
Miyake Tomoyuki
Murakami Yoshiteru
Nakayama Junichiro
Ohta Kenji
G. Ronald Bell & Associates
Sharp Kabushiki Kaisha
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