Dynamic magnetic information storage or retrieval – Record medium – In container
Patent
1993-09-20
1995-05-16
Tupper, Robert S.
Dynamic magnetic information storage or retrieval
Record medium
In container
2423524, G11B 23087
Patent
active
054166594
ABSTRACT:
The present invention provides a data cartridge having a cartridge case (1) capable of containing either of two kinds of magnetic tapes differing from each other in width. The data cartridge is provided with a pair of guide rollers (8) for guiding a driving belt ((9) for driving a magnetic tape (5). Each guide roller (8) has a crowned working surface (8a) having a maximum portion having a maximum diameter. The maximum portion is dislocated from a position corresponding to the middle between the opposite ends of the guide roller (8) toward one of the opposite ends by a specific distance. Each guide roller (8) is set in a position in which the maximum portion is below the position corresponding to the middle between the opposite ends when the data cartridge is provided with a first magnetic tape (1/4 in. magnetic tape) or in a position in which the maximum portion is above the position corresponding to the middle between the opposite ends when the data cartridge is provided with a second magnetic tape (8 mm magnetic tape) having a width greater than that of the first magnetic tape. Circular recesses are formed in the lower surface of the upper wall of the case body to accommodate the tape reels and driver roller.
REFERENCES:
patent: 4635155 (1987-01-01), Gedrgens et al.
Aizawa Taizo
Saitou Kengo
Sasaki Kazuo
Frommer William S.
Sinderbrand Alvin
Sony Corporation
Tupper Robert S.
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