Dynamic magnetic information storage or retrieval – Record transport with head moving during transducing – Tape record
Patent
1995-10-30
1998-04-14
Tupper, Robert S.
Dynamic magnetic information storage or retrieval
Record transport with head moving during transducing
Tape record
G11B 1567
Patent
active
057399760
ABSTRACT:
As a method of increasing the storage capacity of a magnetic recording and reproducing apparatus for recording and reproducing information to and from a magnetic tape in a cartridge, there is a helical scan recording method in which the magnetic tape is diagonally wound around a drum which rotates a magnetic head. With an apparatus adapted to this method, the disposition of the cartridge and the take-up reel for taking up the magnetic tape on the same plane arises a necessity of considerably bending the magnetic tape at the drum portion and, accordingly, the magnetic tape is damaged. In order to prevent the damage of the foregoing type, the tape passage surface from the cartridge to the drum and the tape passage from the drum to the take-up reel are formed by an angle at which the direction in which the magnetic tape is moved is changed due to winding of the magnetic tape around the drum so that the magnetic tape is not bent excessively. A threading device capable of three-dimensionally controlling the position of the magnetic tape in accordance with a predetermined tape passage is provided for the apparatus structured as described above. The threading device is formed by a link mechanism to be moved along the locus of a cam groove so that the three-dimensional position control can be performed.
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Abe Fukuyasu
Higuchi Shigemitsu
Ishii Tomokazu
Kaku Nobuyuki
Kobata Shigeyuki
Hitachi , Ltd.
Tupper Robert S.
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