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Title:
TAPE DEVICE
Document Type and Number:
Japanese Patent JPH0785539
Kind Code:
A
Abstract:

PURPOSE: To stably travel a magnetic tape at a prescribed speed without using a tape transfer mechanism such as capstan and pinch roller systems.

CONSTITUTION: An index signal I is previously recorded on the lower end edge of the magnetic tape 1A at a tape manufacturing process. The tape device is provided with a frequency difference detecting means 19 for comparing the output of an index signal reproducing frequency detecting means 18 with the output of a reference signal generating means 20. A torque signal is generated by a reel speed and rotation control means based on the output of the frequency difference detecting means 19, and the torque signal is imparted to a supply reel driving means 11 and a takeup reel driving means 12. When a feedback control is executed so that the frequency difference may become zero in such a way, the transfer speed of the magnetic tape 1A is controlled so as to be kept constant.


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Inventors:
Sakamoto, Keiji
Obata, Shigeo
Application Number:
JP1993000254931
Publication Date:
March 31, 1995
Filing Date:
September 16, 1993
Export Citation:
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Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
G11B15/46; G11B15/52; (IPC1-7): G11B15/46; G11B15/52
Attorney, Agent or Firm:
岡本 宜喜



 
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