DEVICE FOR ESTIMATING WEAR FACTOR OF MAGNETIC HEAD

Japanese Patent JP3261934

B2

PROBLEM TO BE SOLVED: To provide a device for estimating wear factor of magnetic head which can easily evaluate the wearing characteristics of a magnetic head and a magnetic tape in a short time without measuring the actual abrasion loss of the magnetic head.
SOLUTION: A device for estimating wear factor of magnetic head is provided with a rotary cylinder 5 equipped with a magnetic head 2, a tape 3 which runs while the tape 3 is wound around the cylinder 5, a piezoelectric element 1 provided near the head 2 or mounted on the cylinder 5, a signal transmitting means which fetches the signal of the element 1, and an effective value meter 13 which finds the effective value of the output voltage of the element 1. The wear factor of the head 2 can be found from a calibration curve plotted from the effective value of the pre-found output voltage of the element 1 and the wear factor of the head 2 found from the hardness of the head 2, a vertical force applied to the head 2, the abrasion volume of the head 2, and the sliding distance of the head 2 on the tape 3.

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Koji Taniguchi
Kaoru Matsuoka
Yoshihiro Ueno

JP19635995A

March 04, 2002

August 01, 1995

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Matsushita Electric Industrial Co., Ltd

G01N3/56; G11B5/455; (IPC1-7): G01N3/56; G11B5/455

JP5296901A
JP60251520A
JP36438A
JP6371626A
JP5187993A
JP1102716A
JP367149A

Fumio Iwahashi (2 others)

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