Magnetic tape cartridge requiring uniform force during leader bl

Details Magnetic tape cartridge requiring uniform force during leader bl Magnetic tape cartridge requiring uniform force during leader bl

1989-01-27

1990-12-11

Wolff, John H.

Dynamic magnetic information storage or retrieval

Record medium

In container

360 95, 242195, 226 92, G11B 2302

Patent

active

049774743

ABSTRACT:
A magnetic tape cartridge including a tape cartridge having a tape outlet at least partially defined by a partition wall and a side wall, a tape reel rotatably disposed in the tape cartridge and having a magnetic tape wound therearound and a leader block for securing an end of the tape and being detachably disposed in the tape outlet. The leader block has at one end thereof a curved surface for contacting a portion of the partition wall and at another end thereof an abutting member for abutting against the side wall of the cartridge. The side wall of the cartridge is deformable to allow for attachment and detachment of the leader block. A relief portion is provided on the partition wall such that when the leader block is rotated about a point of contact between the curve surface of the leader block and the portion of the partition wall so as to be attached and detached to the tape outlet, the point of contact is disposed between a longitudinal center line of the leader block and a point located inwardly of the center line with respect to the cartridge. The abutting member has a low coefficient of friction such that the forces required to attach and detach the leader block to the tape outlet is uniform. Further, a projection is formed on a portion of the abutting member so as to uniformly deform the side wall.

REFERENCES:
patent: 4452406 (1984-06-01), Richard
patent: 4681278 (1987-07-01), Smith
patent: 4717090 (1988-01-01), Smith et al.
patent: 4775115 (1988-10-01), Gelardi

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