System for checking the opening and closing function of cassette

Details System for checking the opening and closing function of cassette System for checking the opening and closing function of cassette

1989-08-25

1990-08-07

Severin, David J.

Dynamic magnetic information storage or retrieval

Miscellaneous

360 71, G11B 3300

Patent

active

049472771

ABSTRACT:
A magnetic tape cassette checking system is provided with a lock releasing mechanism (11), a cover opening mechanism (12) and a position detecting device (13), and checks whether a cassette cover can be correctly opened and closed. The lock releasing mechanism comprises a cylinder and a lock releasing pin which is moved back and forth by the cylinder and is adapted to push a lock member of the cassette to a releasing position. The cover opening mechanism comprises a cylinder, a cover opening plate which is moved up and down by the cylinder, a photoelectric switch disposed near the plate, and a damper spring connecting the plate with the cylinder, and is adapted to push the cover of the cassette to the opened position. The position detecting device comprises two pairs of photoelectric switches and detects whether the cover of the cassette is in the closed position.

REFERENCES:
patent: 4794477 (1988-12-01), Hashiguchi et al.
patent: 4851938 (1989-02-01), Irani

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