Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head
Reexamination Certificate
2006-08-15
2006-08-15
Young, Wayne (Department: 2651)
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the head
Reexamination Certificate
active
07092199
ABSTRACT:
A magnetic tape which is run at a speed of 4 m/sec. or higher and has recording tracks with a width of 21 μm or less, and which includes a non-magnetic support, at least one magnetic layer formed on one surface of the non-magnetic support, and a backcoat layer formed on the other surface of the non-magnetic support, wherein servo signals for controlling tracking are recorded on the magnetic layer or the backcoat layer, the value of (α/W) X (V/f) is 10 [s−1] or less, and/or the value of (α/W) is 0.1 or less, wherein V [mm/sec.] is the tape-running speed; α [μm] is an amount of a weave with a cycle of f [mm] on one edge of the tape or the other edge thereof, as the reference side, for the running of the tape; and W [μm] is a width of the recording track. The magnetic tape can decrease PES and off-track and thus is excellent in servo tracking performance.
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Amano Kousuke
Arakawa Shinji
Nakamura Akihiro
Shimizu Jyunichi
Tani Masakazu
Hitachi Maxell Ltd.
Slavitt Mitchell
Young Wayne
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