JPH0198111A - Production of thin film magnetic head - Google Patents

Abstract

PURPOSE:To adhere a thin film magnetic head with a high precision and to improve the mass productivity by using an adhesive to stick rear faces of respective substrates of a recording head for signal write and a reproducing head for signal read to each other at the time of unifying these heads. CONSTITUTION:Magnetic substrate materials 5 and 6 of high thickness precision and good flatness are used, and a write head 2 and a read head 2 are stuck at a prescribed azimuth angle to faces of substrate material 5 and 6 facing each other. The gap between substrate materials 5 and 6 where heads are not stuck is penetrated with the adhesive and this adhesive is hardened. Thus, the adjustment of the inclination of heads 1 and 2 is unnecessary and the reproducibility is improved because the adhesive film thickness is not thin but is uniform.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a method of manufacturing a thin film magnetic head used in a magnetic tape device having a large number of tracks.

<Prior Art> Magnetic tape has been used as an external storage device for a long time, and is particularly useful as a storage file. However, in recent years, as the amount of information to be recorded has increased, track widths have become narrower and bit densities have improved due to the demand for higher densities. There is a problem that reading cannot be performed correctly, and there is a demand for a head that does not have misalignment or inclination between the write head and the read head.

A conventional method of manufacturing this type of magnetic head is illustrated in, for example, FIG. 2 (FIG. 2(a) is a side sectional view and FIG. 2(b) is a plan view).

As shown in the figure, write head 1 and read head 2
The high viscosity The head 1 and the head 2 are fixed together with a resin (adhesive) 4 while maintaining the distance between them.

However, with this manufacturing method, not only is it time consuming to adjust the inclinations of heads 1 and 2, but also the As5y
It was a manufacturing method that was extremely unsuitable for mass production, as the parts could not be removed and each chip was stuck together.

<Objective> An object of the present invention is to provide a method for manufacturing a thin film magnetic head with high accuracy and high mass productivity when adhering a thin film magnetic head.

<Example> Hereinafter, an example of the method for manufacturing a thin film magnetic head of the present invention will be described in detail with reference to the drawings.

The present invention improves thickness accuracy and flatness as shown in FIG. Using good magnetic substrate materials 5 and 6, the back surfaces of the write head 1 and the read head 2 formed on the substrate materials 5 and 6 with an accuracy that satisfies a predetermined inclination angle (azimuth angle) between the heads in advance are bonded to each other. They are directly bonded and fixed with adhesive to form an integrated magnetic head. In order to bond Head 1 and Head 2 together, a method was adopted in which after aligning and adjusting the positions of the two, the adhesive was infiltrated into the gap between the two and cured. Because of this, there is no need to adjust the inclinations of the heads 1 and 2, and they can be laminated with high precision.

Furthermore, by simultaneously adjusting the alignment of rows 7 and 7' in which a plurality of heads 1 and 2 are arranged as shown in FIG. 3, the mass production effect can be greatly increased. As described above, the present invention makes it possible to produce a thin film magnetic head with high reliability and mass production, thereby providing a magnetic head with excellent characteristics.

<Effects> According to the present invention, a thin-film magnetic head that is highly mass-producible, has high reproducibility, and is highly reliable can be obtained by a manufacturing method in which a plurality of magnetic heads are bonded simultaneously.

[Brief explanation of the drawing]

FIG. 1(a) is a side view of a magnetic head produced by the method of the present invention, FIG. 1(b) is a plan view thereof, FIG. 2 is a side sectional view of a magnetic head produced by a conventional method, and FIG. Floor plan, 3rd
The figure is a detailed explanatory diagram of the present invention in which sheets are pasted together row by row. 1...Writing head 2...Reproducing head 3...Writing head case 3'...Reproducing head case 4
・・High viscosity adhesive 5・Writing head substrate 6・・
Reproduction head substrate 7...Write head row 7'...
- Playhead row. Agent Patent attorney Takeshi Sugiyama (1 other person) (σ)
(σ) Figure 2
Broom 1 Diagram M3 Diagram Procedure Correction Form) 1. Indication of the case Patent application No. 62-147505 2. Name of the invention Method for manufacturing thin-film magnetic heads 3. Person making the amendment Relationship to the case Patent applicant address: 545-545 22-22 Nagaike-cho, Abeno-ku, Osaka-shi
Name (504) Sharp Corporation Representative Haruo Tsuji 4, Agent Address 545, 22-22 Nagaike-cho, Abeno-ku, Osaka
No. Sharp Co., Ltd., October 25, 1986, 6, Subject of amendment (1) Brief description of drawings column 7 of the specification, Contents of amendment (1) ""Figure2" to "Figure 2"
Figure (a)” is corrected. that's all

Claims (1)

[Claims] 1. When integrating the recording head for writing signals and the reproducing head for reading signals, the back surfaces of each substrate are faced to each other, and the back surfaces are bonded to each other using adhesive. A method for manufacturing a thin film magnetic head.