JPS5693118A - Head device - Google Patents
Head deviceInfo
- Publication number
- JPS5693118A JPS5693118A JP16974379A JP16974379A JPS5693118A JP S5693118 A JPS5693118 A JP S5693118A JP 16974379 A JP16974379 A JP 16974379A JP 16974379 A JP16974379 A JP 16974379A JP S5693118 A JPS5693118 A JP S5693118A
- Authority
- JP
- Japan
- Prior art keywords
- head
- track
- rotating angle
- hole
- signal
- 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
Abstract
PURPOSE: To secure a highly accurate setting for the head reference position even in case when the track pitch is reduced especially, by securing a simple constitution in that the reference position is detected based on the detection gear controlled at the specific rotating angle position of a driving step motor.
CONSTITUTION: The detection gear 30 is set so that it turns in a range less than a turn when the step motor 27 turns in an extent which is required to shift the head 21 from the head track position on the tape 11 to the final track position. At the same time, the through-hole 31 is provided to the detection gear 30 along with the through-hole detector 32 consisting of the light emitting element 32a and the photodetector 32b. Then the detection signal of the rotating angle position of the gear 30 is obtained when the hole 31 coincides with the detector 32. In the mode under which this signal is obtained, the head 21 is set to coincide with the head track of the tape 11 and then the detection signal of the rotating angle position is used for the head position reference signal.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16974379A JPS5693118A (en) | 1979-12-26 | 1979-12-26 | Head device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16974379A JPS5693118A (en) | 1979-12-26 | 1979-12-26 | Head device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5693118A true JPS5693118A (en) | 1981-07-28 |
Family
ID=15892017
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16974379A Pending JPS5693118A (en) | 1979-12-26 | 1979-12-26 | Head device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5693118A (en) |
-
1979
- 1979-12-26 JP JP16974379A patent/JPS5693118A/en active Pending
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