JPS6448276A - Servo track writing device - Google Patents
Servo track writing deviceInfo
- Publication number
- JPS6448276A JPS6448276A JP20473187A JP20473187A JPS6448276A JP S6448276 A JPS6448276 A JP S6448276A JP 20473187 A JP20473187 A JP 20473187A JP 20473187 A JP20473187 A JP 20473187A JP S6448276 A JPS6448276 A JP S6448276A
- Authority
- JP
- Japan
- Prior art keywords
- servo track
- written
- fluctuation
- head
- magnetic disk
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Moving Of The Head To Find And Align With The Track (AREA)
Abstract
PURPOSE:To prevent the position determining operation of a data head from going to unstable due to the unequality of a servo track interval and the distortion of a position error signal by providing a servo track writing head to correct a position on a magnetic disk and to write the servo track. CONSTITUTION:The titled device has a reference head 9, besides a servo track writing head 10, to detect fluctuation received by the revolving oscillation of a revolving mechanism with the magnetic disk to which the servo track is written, especially, the fluctuation in the radius direction of a magnetic disk board 7 and a reference servo track is written to the magnetic disk board before the servo track is written by this reference head 9. A servo signal is read from this servo track by the reference head and demodulated to the position error signal to be reference. Then, while a servo track writing position is corrected according to this signal, the servo track is written. Thus, the phase of the fluctuation generated by the revolving fluctuation of the written servo track can be matched and the equality of the track interval of the written servo track can be improved. Then, the fluctuation itself can be reduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20473187A JPS6448276A (en) | 1987-08-17 | 1987-08-17 | Servo track writing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20473187A JPS6448276A (en) | 1987-08-17 | 1987-08-17 | Servo track writing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6448276A true JPS6448276A (en) | 1989-02-22 |
Family
ID=16495380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20473187A Pending JPS6448276A (en) | 1987-08-17 | 1987-08-17 | Servo track writing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6448276A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1049064C (en) * | 1993-07-21 | 2000-02-02 | 株式会社日立制作所 | Method for writing servo signals onto a magnetic disk and magnetic disk drive equipped with magnetic disk(s) having servo pattern recorded by the method |
| US6904010B1 (en) | 1999-06-30 | 2005-06-07 | Fujitsu Limited | Method of writing servo tracks for disk file apparatus using write start or stop sectors |
| KR100494387B1 (en) * | 2002-11-19 | 2005-06-13 | 삼성전자주식회사 | Disk writer and writing method thereof |
| US7068462B2 (en) | 2002-06-03 | 2006-06-27 | Hitachi, Ltd. | Magnetic recording apparatus |
| US7075743B2 (en) | 2000-11-10 | 2006-07-11 | Hitachi Global Storage Technologies Japan, Ltd. | Method of servo writing for magnetic recording system, magnetic recording system |
| JP2007301796A (en) * | 2006-05-10 | 2007-11-22 | Sasaoka Kogyo:Kk | Binder of notes |
| JP2007331258A (en) * | 2006-06-15 | 2007-12-27 | Sasaoka Kogyo:Kk | Binder of note |
-
1987
- 1987-08-17 JP JP20473187A patent/JPS6448276A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1049064C (en) * | 1993-07-21 | 2000-02-02 | 株式会社日立制作所 | Method for writing servo signals onto a magnetic disk and magnetic disk drive equipped with magnetic disk(s) having servo pattern recorded by the method |
| US6904010B1 (en) | 1999-06-30 | 2005-06-07 | Fujitsu Limited | Method of writing servo tracks for disk file apparatus using write start or stop sectors |
| US7075743B2 (en) | 2000-11-10 | 2006-07-11 | Hitachi Global Storage Technologies Japan, Ltd. | Method of servo writing for magnetic recording system, magnetic recording system |
| US7436611B2 (en) | 2000-11-10 | 2008-10-14 | Hitachi Global Storage Technologies Japan, Ltd. | Method of servo writing for magnetic recording system, magnetic recording system |
| US7068462B2 (en) | 2002-06-03 | 2006-06-27 | Hitachi, Ltd. | Magnetic recording apparatus |
| US7092181B2 (en) | 2002-06-03 | 2006-08-15 | Hitachi Global Storage Technologies Japan, Ltd. | Magnetic recording apparatus |
| KR100494387B1 (en) * | 2002-11-19 | 2005-06-13 | 삼성전자주식회사 | Disk writer and writing method thereof |
| JP2007301796A (en) * | 2006-05-10 | 2007-11-22 | Sasaoka Kogyo:Kk | Binder of notes |
| JP2007331258A (en) * | 2006-06-15 | 2007-12-27 | Sasaoka Kogyo:Kk | Binder of note |
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