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Magnetic head

A magnetic head and magnetic core technology, applied in the direction of magnetic recording head, manufacturing magnetic head surface, magnetic recording, etc., can solve the problems of recording medium damage, sliding area increase, etc., and achieve the effect of reducing no signal loss

Inactive Publication Date: 2005-05-04
ALPS ALPINE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the sliding surface and the sliding area with the recording medium increase, which is likely to cause damage to the recording medium. In addition, the magnetic powder falling off from the recording medium is easily attached to the sliding surface of the magnetic head.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0065] mounted on a rotating drum Figure 1 to Figure 4 The magnetic head 20 of the illustrated example and the magnetic head 60 of the comparative example are shown. The magnetic recording and reproducing apparatus adopting this rotary magnetic drum winds the magnetic tape helically on the outer periphery of the rotary magnetic drum, and utilizes the rotation of the rotary magnetic drum, and the sliding surface of the magnetic head 20 or the magnetic head 60 is inclined to the magnetic tape along the traveling direction relative to the magnetic tape. direction to scan.

[0066] (Example)

[0067] for Figure 1 to Figure 4 In the magnetic head 20 shown, the width dimension Wt of the narrow magnetic core portion 30F, that is, the apparent track width dimension, is fixed at 12 μm, and the width dimensions of the non-magnetic material portions 41 and 41 on both sides are different. Various magnetic heads with different width dimensions W2. The width W2 of the sliding surface ...

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PUM

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Abstract

The invention provides a magnetic head that has a narrow track width, can cope with high-density recording, and has excellent sliding characteristics with a magnetic tape and excellent reproduction output characteristics. In the magnetic head, a magnetic core is formed by joining core halves. The magnetic core includes first stepped portions, second stepped portions, and a narrow core portion. A magnetic gap is provided in the narrow core portion. A terminal end of the magnetic gap is disposed between the second stepped portion and the narrow core portion, and the depth of the magnetic gap is thereby made small. The magnetic gap is reinforced by nonmagnetic material portions on both sides thereof, and a nonmagnetic material.

Description

technical field [0001] The present invention relates to a magnetic head used in a magnetic recording and reproducing device such as a digital video camera (DVC) device or a magnetic tape memory, and particularly relates to a magnetic head suitable for narrow track width and high-density recording, maintaining good tape contact, and having stable reproducing power characteristics . Background technique [0002] As the recording density of magnetic recording and reproducing devices such as digital cameras and magnetic tape storage devices increases, the track width of magnetic heads mounted on the magnetic recording and reproducing devices also decreases. [0003] In a magnetic head with a narrow track width, it is necessary to reduce the width dimension (thickness dimension) of the magnetic core at the portion exposed on the sliding surface with the recording medium in accordance with the track width dimension. [0004] The following Patent Document 1 discloses a magnetic he...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B5/127G11B5/187G11B5/23
CPCG11B5/1871
Inventor 杉原真次
Owner ALPS ALPINE CO LTD