Servo writer and servo writing process

Details Servo writer and servo writing process Servo writer and servo writing process

2006-11-28

2006-11-28

Young, Wayne (Department: 2627)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

C360S057000, C360S066000

Reexamination Certificate

active

07142388

ABSTRACT:
A servo writer according to the present invention is a servo writer which writes a servo signal on a servo band of a magnetic tape. It comprises a magnetic tape driving system in which a magnetic tape supplied from a supply reel is taken up by a take-up reel to drive the magnetic tape; a DC erasing head which is slidably in contact with said driving tape and which DC-magnetizes said servo band with imparting an azimuth relative to said servo band; and a servo signal writing head provided on a downstream of said DC erasing head in the driving direction of the magnetic tape, which is slidably in contact with said driving tape and which magnetizes the servo band by a magnetizing force having a component with a reverse magnetizing force relative to the magnetizing force of the DC erasing head in the lengthwise direction of the magnetic tape.

REFERENCES:
patent: 4689514 (1987-08-01), Kondoh et al.
patent: 4996609 (1991-02-01), Joannou
patent: 5689384 (1997-11-01), Albrecht et al.
patent: 5838520 (1998-11-01), Hirayama
patent: 6347016 (2002-02-01), Ishida et al.
patent: 6970312 (2005-11-01), Yip et al.
patent: 2004/0120061 (2004-06-01), Yip et al.

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