Cover for the light channel for a device for switching-off a mag

Details Cover for the light channel for a device for switching-off a mag Cover for the light channel for a device for switching-off a mag

1985-04-24

1986-07-22

Stellar, George G.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the record

360132, G11B 2306

Patent

active

046023038

ABSTRACT:
A cover for the light channel for a device for switching-off at the end of its run a magnetic cassette tape with a transparent leader tape, an opening being provided in the bottom part of the cassette for accommodating the light, the opening being defined by a one- or two-part light shaft having slotted light channels for the passage of the beams of light towards the light-receiving elements on the side of the device, the light shaft 5 located only in the bottom part of the cassette being provided with an encircling ledge 8 below the light channels, 6, 7 on which ledge a flexible piece of film 9 rests which is transparent at least in the region of the light channels, or the light shaft, which is divided in the middle and fills out the height of the interior of the cassette housing, has an encircling ledge 8, 10 in each of the top and bottom parts 5, 5 a thereof, outside the region of the light channels, between which a flexible transparent piece of film 12 covering the light channels rests, the piece of film being supported on the inside wall of the light shaft.

REFERENCES:
patent: 4012011 (1977-03-01), Saito

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