Cartridge shutter actuating device in .Iadd.a Magneto optical .I

Details Cartridge shutter actuating device in .Iadd.a Magneto optical .I Cartridge shutter actuating device in .Iadd.a Magneto optical .I

1993-02-12

1996-12-10

Heinz, A. J.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

360 13, G11B 1704

Patent

active

RE0353965

ABSTRACT:
A device for opening a shutter of a disc cartridge along with insertion of the disc cartridge into a holder of a recording and/or reproducing apparatus for performing recording and/or reproducing operation is disclosed. The device includes at least one arm member freely rotatable about a pivot provided at one end thereof and having at the other end a first engaging portion adapted to be in engagement with the shutter substantially during insertion of the disc cartridge. A guide means or a slot extending in an oblique direction between the cartridge inserting direction and a direction in which said shutter is slided to open is provided for guiding therealong a second engaging portion of the arm member during first-step advancement of the disc cartridge into the holder from an unloaded position to a half-loaded position, thereby rotating the arm member to open the shutter due to continued engagement thereof with the first engaging portion. The pivot of the arm member is supported by a sliding member and is sliding therewith in the cartridge inserting direction during second-step advancement of the disc cartridge from the unloaded position to a full-loaded position. A spring is connected between the arm member and the holder or apparatus for biasing the arm member toward a direction opposite to the cartridge inserting direction.

REFERENCES:
patent: 4688123 (1987-08-01), Sokol
patent: 4740937 (1988-04-01), Watanabe
patent: 4791511 (1988-12-01), Davis
patent: 4811137 (1989-03-01), Muto
patent: 4964005 (1990-10-01), Uzuki

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