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US 4,901,303 AGranted
Photo-electro-magnetic disc device
AssigneePioneer Electronic Corporation
InventorIkuya Kikuchi
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AssigneePioneer Electronic Corporation
InventorIkuya Kikuchi
Estimating the term…
A photo-electro-magnetic disc device has a photo-electro-magnetic disc accommodated in a disc cartridge load as a unit into cartridge holder loaded in the disc device. The cartridge holder with the end of a loading mechanism moves the disc onto a turn table. An optical head and a magnetic field applying part for recording data are loaded facing opposite sides of the disc. Magnetic members are provided on the same side of the disc as is the optical head and are connected to the cartridge holder which is made of magnetic material as to confront magnetic field applying part through the disc. A magnetic circuit which includes the disc is thus formed whereby the magnetic flux from the magnetic field applying part passes through the disc thereby providing a high magnetic field strength throughout the entire region of the disc to be irradiated by a light spot from the optical head.
A photo-electro-magnetic disc device comprising:
A photo-electro-magnetic disc device comprising:
Dependencies are inferred from the claim text.