JPH03181014A - Magnetic head - Google Patents

Abstract

PURPOSE:To stabilize writing and reading out characteristics by providing a measuring aperture for measuring the gap depth of a read/write core on a slider. CONSTITUTION:The slider 3 is provided with the measuring aperture 6 which consists of a groove or hole, etc., penetrating a part on the surface on the side opposite from the adhered surfaces of the cores 1, 1' of the magnetic head and the read/write core gap of the magnetic head core. The gap depth of the read/write core 1 is obtd. by bringing a slider assembly into tight contact with the core, then polishing the plane part of the read/write core 1 while measuring the read/write core gap depth 4 of the read/write core 1 from the measuring aperture 6 of the slider 3 of the slider assembly with a microscope and stopping the polishing at the point of the time when the prescribed gap depth is attained. All the gap depths are formed to the specified depth after the polishing in this way without being affected by the accuracy of the unit parts and the errors at the time of assembly.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a magnetic head for a floppy disk device.

[Conventional technology]

Conventionally, as shown in FIG. 3, a magnetic head for a floppy disk device of this type has a magnetic head core in which a read/write core 1 and an erase core 1' are integrally joined, a slider 2 holding the magnetic head core, and a slider. It consists of 3.

By the way, since the gap depth of the read/write core l greatly affects the writing and reading efficiency of the magnetic head, it is necessary to polish the flat part of the core to finish the read/write core gap depth to a constant dimension. Conventionally, the read/write core l is covered on both sides by the slider 2 and the slider 3, and the dimension of the read/write core gap depth 4 shown in Fig. 2 is measured when the sliding slider assembly is completed. Since it is not possible to do so, we measure the gap depth of the single core and determine the polishing dimensions accordingly
The gap depth was made uniform by polishing the flat surface of the core.

[Problem to be solved by the invention]

In the conventional method described above, errors occur in the gap depth of the core after polishing due to the degree of assembly of the sliding slider, variations in the accuracy of individual cores, and polishing accuracy, resulting in incomplete signal writing and reading. , which had the disadvantage of significantly reducing the reliability of the entire head.

An object of the present invention is to provide a magnetic head that solves the above problems.

[Means to solve the problem]

In order to achieve the above object, a magnetic head according to the present invention includes a magnetic head core having a read/write core gap, and a non-magnetic slider adhered to a side surface of the magnetic head core, the magnetic head comprising: The slider is provided with a measurement opening for measuring the read/write core gap depth.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a perspective view showing one embodiment of the present invention, and FIG. 2 is a perspective view of an embodiment of the present invention.
It is a front view.

In the figure, ■ is a read/write core, 1' is an erase core, and 2.3 is a slider. Slider 3 has
A measuring opening 6 is provided, which is a hole or a hole that penetrates a part of the surface of the cores 1, 1' of the magnetic head opposite to the adhesive surface and the read/write core gap of the magnetic head core.

In the embodiment, in order to determine the gap depth of the read/write core 1, after the sliding slider assembly is brought into close contact with the read/write core 1, the read/write core 1 is measured using a microscope through the measurement opening 6 of the slider 3 of the slider assembly. The flat portion of the read/write core 1 is polished while measuring the write core gap depth 4, and the polishing is stopped when a predetermined gap depth is reached. 5 indicates the depth of the erase core gap.

Since the read/write core gap depth 4 can always be checked in the assembled state of the core, the gap depth after polishing is constant without being affected by the difference in W4 when assembling the single item accuracy 1.

〔Effect of the invention〕

As explained above, the present invention makes it possible to measure the glued/light core gap depth with a sliding slider assembly by providing a measuring opening in the slider, without being affected by errors during assembly. , the gap depth can be finished to a predetermined dimension, and the magnetic head writing manufactured,!
i! This has the effect of keeping the extrusion characteristics constant.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing one embodiment of the present invention, FIG. 2 is an open view of the same, and FIG. 3 is a perspective view showing a conventional sliding assembly. 1...Read/write core 1'...Erase core 2.3...Slider 4...Read/write core gap depth 5...Erase core gap depth 6...Measurement opening

Claims (1)

[Claims] (1) A magnetic head comprising a magnetic head core having a read/write core gap and a non-magnetic slider bonded to a side surface of the magnetic head core, wherein the read/write core gap depth is measured on the slider. A magnetic head characterized in that it is provided with a measurement aperture for measuring.