JPS6022724A - Production of magnetic head - Google Patents

Abstract

PURPOSE:To improve the accuracy of processing size and to attain the simultaneous processing for plural magnetic heads by forming a conductor pattern on a substrate containing plural magnetic heads to be processed. CONSTITUTION:When magnetic heads 5a-5n are processed, the connection is measured between terminals 7a and 7b as well as 7c and 7d of conductor patterns 6a and 6b provided at both ends of a substrate 4. The processing is finished at a time point when no connection is secured between terminals 7a and 7b as well as 7c and 7d after the patterns 6a and 6b are cut by processing. In such a way, the accurate throat height is obtained for plural magnetic heads. Thus it is possible to process simultaneously and accurately plural magnetic heads compared with the processing using the optical measurement. This also reduces the working time.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a method of manufacturing a magnetic head in which a plurality of magnetic heads are processed simultaneously.

[Prior Art] FIG. 1 shows the structure of a thin film head in which a plurality of magnetic heads are manufactured simultaneously using chemical processing, vapor deposition processing, etc. In the figure, (1) shows the core: h, (2) shows the core B, and (3) shows the coil. The abutting portion of core A (1) and core B (2), indicated by δ in the figure, is called the throat height, and the dimension of this throat height δ affects the electromagnetic conversion characteristics of the magnetic head. In other words, if the throat height δ is large, the read voltage will be low, and if the throat height δ is small, it will be difficult to record. Therefore, it is necessary to process the throat height δ to a predetermined value that takes into consideration the recording and readout characteristics.

The throat height δ of this magnetic head is generally machined by measuring its mechanical dimensions, for example, optically. However, there is a drawback that dimensional accuracy is reduced due to the accumulation of dimensional measurement tolerances of each part.

[Purpose of the invention]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method for manufacturing a magnetic head that eliminates the above-mentioned drawbacks and can process a plurality of magnetic heads at the same time.

[Summary of the invention]

In the method for manufacturing a magnetic head of the present invention, one or more conductive patterns are provided on a substrate having a plurality of magnetic heads to be processed, in order to determine the processing dimensions of the magnetic head, and the plurality of magnetic heads are simultaneously processed. It is characterized by being processed.

〔Example〕

A method of manufacturing a magnetic head according to the present invention will be explained based on examples. FIG. 2 shows an embodiment of the invention. In Figure 2, (4) is the substrate, (5a) to (5n) are the substrates (4).
) is a magnetic head placed on top of the magnetic head. Magnetic head (5a
) to (5n) are the thin film heads shown in FIG. 1, for example. (6a) and (6bl) are U-shaped conductor patterns provided at both ends of the substrate (1), and (7a) to (7d) are terminals provided on the conductor patterns (6a) and (6b).

When processing several magnetic heads (5a) to (5n), the terminals (7al, (7b) and conductor butter/(6b) of the conductor pattern (6a) provided at both ends of the substrate (4) (7c) Measure the continuity of # (7d) and process it.The conductor patterns (6a) and (6b) are cut and the terminal (
The point in time when there is no continuity between 7a) and the terminal (7b) and between the terminals (7c) and (7d) is defined as the processing end point. In this case, the throat heights δ of the plurality of magnetic heads can be accurately obtained.

In this embodiment, conductor patterns 7 (6a), (6b
) was made into a U-shape, but as shown in Figure 6, two parallel conductor patterns (6c) and (6d) were formed, and a knife was cut at the tips of the two conductor patterns (6c) and (6d) by processing. The point in time when the terminals (7a) and (7b) are electrically connected can also be defined as the processing end point. Alternatively, as shown in Fig. 4, the area of the conductor pattern (6e) on the processing surface may be increased, the conductor pattern (6e) may be cut, and the processing end point may be determined by the resistance value during the process. can.

〔Effect of the invention〕

As explained above, in the magnetic head manufacturing method of the present invention, multiple magnetic heads can be processed simultaneously and accurately compared to the case where magnetic heads are processed by optical measurement. Furthermore, processing dimensions can be measured while the substrate is installed in the machine, which has the effect of shortening the working time.

[Brief explanation of the drawing]

Fig. 1 is a structural diagram of a thin film head, Fig. 2 is a structural diagram of an embodiment of the present invention, and Figs. 6 and 4 are structural diagrams of conductor patterns, respectively. In the figure, (1) is a core A, (2+ core B), (3) is a coil, (4) is a substrate, (5a) to (5n) are magnetic heads, and (6a) to (6e) are conductor patterns. Note that the same reference numerals are used in each figure. indicates the same or equivalent parts. Agent Masuo Oiwa Figure 1 Figure 3 Figure 4 Procedural amendment band (spontaneous) 18th, 1982, Mr. Commissioner of the Japan Patent Office, Indication of the case, Patent application No. 58-131465 No. 2, Name of the invention Method for manufacturing a magnetic head 3, Name of the person making the amendment lf! Column 06 of "Detailed description of the invention" in Book A, Contents of the amendment

Claims (1)

[Claims] A method for manufacturing a magnetic head, characterized in that, in the manufacturing process of the magnetic head, a conductor pattern for determining the processing dimensions of the magnetic head is provided at one or more locations on a substrate having a plurality of magnetic heads to be processed.