JPS59121615A - Magnetic head - Google Patents

Abstract

PURPOSE:To improve yield by grasping both sides in the coil winding part of a read/write layer with nonmagnetic materials of erasing layers so that the coil winding part is structurally reinforced and is prevented from breaking during manufacture. CONSTITUTION:The shape of a read/write layer A is similar to the shape in the prior example, except that an erasing layer C is formed by combining a nonmagnetic material 6 and a magnetic material 5 having a U-shape. The layers C are disposed on both sides of the layer A to grasp said layer. The materials 6 consisting of ceramics of the layer C are positioned on both sides of the coil winding part of the layer A to hold the coil winding part. The coil winding part is thus electrically insulated by the insulator of ceramics and direct winding of a coil 7 is made possible.

Description

[Detailed Description of the Invention] The present invention resides in the core structure of a magnetic head, and its purpose is to reduce the thickness of the core structure in response to the narrowing of the track. The goal is to provide products with high yields at low prices.

In general YC magnetic disk drives, and in particular in flexible magnetic disk drives, the magnetic head has a data writing/reading layer. A Deutsch structure is widely used in which an erasing layer is formed to erase the edge of the recording; and in contrast to the writing/reading layer gap, the erasing layer gap is located at the rear in the running direction of the disk medium. There is a tunnel-type erasing structure located offset in the direction of .

This type of magnetic head had a core structure in which a feed/read layer as shown in FIG. 1 was sandwiched from both sides by erasing layers as shown in FIG. In such a core structure, as the track becomes narrower and the width of the write Zme no. is narrowed, there is a problem in that the core structure becomes more likely to break. Conventionally, there is a convolution/reading layer A consisting of a magnetic material (1) and a non-magnetic material (3), and an erasing layer B consisting of an abbreviated non-magnetic material (4) and a magnetic material (5). When combined, as shown in FIG. 3, the coil-wound portion (2) of the magnetic material (1) of the folding/reading layer A is exposed. In other words, this coil winding is easily damaged when winding the coil with an insulating material interposed in part (2) K, which is a major problem in manufacturing magnetic heads, resulting in poor manufacturing yields. Ta.

The present invention was made in view of the above-mentioned drawbacks, and is intended to solve the above-mentioned drawbacks by changing the external shape of the erasing layer.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings. First, the shape of the embedding/reading layer A is the same as that of the conventional example, so the explanation will be omitted. Erasing layer C is a concave-shaped nonmagnetic material (
6) and a magnetic material (5) (fourth
(see figure). FIG. 5 shows the state in which the erasing layer C is placed on both sides of the writing/reading layer A and is sandwiched therebetween. Size: The coil winding part (2) of the included/reading layer A has a non-magnetic material (6) made of erased J-C ceramic placed on both sides of the coil winding part (2), which holds the coil winding part (2). . As a result, the coil winding part (2) is electrically insulated by the ceramic insulator, and as shown in Figure 6, the coil winding part (2) is electrically insulated directly from the coil (7).
You can also wrap it around.

As shown above, in the magnetic head of the present invention, the coil winding portion of the writing/reading layer is sandwiched on both sides by the non-magnetic material of the erasing layer, and the coil winding portion is structurally reinforced and manufacturing No damage at times, good yield, and low cost YC
It has remarkable effects such as:

Note that if the non-magnetic material (6) is an insulating material such as ceramic, the coil winding section (2) can be directly wound with the coil (7).

[Brief explanation of drawings]

151 to 3 show conventional examples, and Fig. 1 shows -
FIG. 2 is a perspective view showing the erasing layer, and FIG. 3 is a perspective view showing the core structure. Fourth
6 to 6 show embodiments of the present invention, FIG. 4 is a perspective view showing the erasing layer, and FIGS. 5 and 6 are core I'f'? FIG. Person Inclusion/Ichidori layer C erasure layer (1) Magnetic material
(2) Coil winding part (3) Non-magnetic material (5) Magnetic material (6) Non-magnetic material 7) Coil No. 1 Fig. 2I ￥1

Claims (1)

[Claims] A write/read layer for writing and reading data, and when writing, a newly written record and an I layer in front of it.
The erasing layer for erasing the edges of recorded records is fsf.
Both I+1 for J writing/reading layer! 1. A magnetic head, characterized in that the coil winding portion of the writing/reading layer is sandwiched between both sides of the non-magnetic material of the erasing layer in the magnetic head positioned at the K position.