Title:
METHOD OF INSPECTING QUANTITY OF TAPE OF REEL
Document Type and Number:
Japanese Patent JPS5970907
Kind Code:
A
Abstract:
The amount of tape wound on the hub of a reel can be determined by the tape drive by using a force/acceleration relationship. An electrical power which provides a certain torque to the motor (2) is applied to the reel drive. The torque imparts a fixed rotational displacement over a fixed period of time. The rotational displacement is measured by a tachometer (7). The angular acceleration of different inertias results in different rotational displacement over the set period of time which can be used to indicate the amount of tape on the reel since the inertia of the other items, the motor, the clutch and the hub, remains the same.
Inventors:
KENESU DANIERU DANIERUSEN
DANIERU JIEEMUSU UINAASUKII
DANIERU JIEEMUSU UINAASUKII
Application Number:
JP10295983A
Publication Date:
April 21, 1984
Filing Date:
June 10, 1983
Export Citation:
Assignee:
IBM
International Classes:
G01L5/00; G01B21/06; G11B15/02; G11B27/13; G11B27/17; (IPC1-7): G01B21/06; G01L5/00; G11B27/18
Domestic Patent References:
| JPS5839948U | 1983-03-16 |
Attorney, Agent or Firm:
Jiro Yamamoto
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