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Magnetic head testing method and testing device

An inspection method and a detection device technology, which are applied in the functional testing of magnetic heads, magnetic recording heads, and the manufacture of magnetic flux-sensitive magnetic heads, etc., can solve the problems of MR head 4A burning, potential difference, etc.

Inactive Publication Date: 2005-06-29
TDK CORPARATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when the lead pattern line of the lead wire 35 is cut off by a cutter after the above-mentioned measurement of DC resistance, a potential difference also occurs between the lead pattern line and the cutter, so that, as in the above-mentioned case, there is a difference between the lead pattern and the cutter. There is a large current flowing between them, and the MR head 4A will also burn out

Method used

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  • Magnetic head testing method and testing device
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  • Magnetic head testing method and testing device

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Embodiment Construction

[0055] Figure 1A , Figure 1B and figure 2 The basic composition of the magnetic head device H shown is the same as Figure 9 Same as shown.

[0056] This magnetic head device H is provided with a flexible member at the front end of its load beam 1, and the slider 4 is engaged with this flexible member. The load beam 1 and the flexible member are elastic supporting members made of materials such as leaf springs. The mounting plate 2 is engaged with the base end of the load beam 1 .

[0057] Such as Figure 5 As shown, the α end of the slider 4 is the front end, and the β end is the rear end. Recording media such as hard disks travel from the front to the rear. On the surface of the slider 4 opposite to the recording medium, rail-shaped ABS surfaces 4a, 4a are formed to receive the buoyancy force generated by the air flow on the recording medium, and on the end surface 4b at the rear end, a thin film element 5 is provided.

[0058] Figure 6 A cross-sectional view of ...

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Abstract

The invention relates to an inspection method and inspection device of a magnetic head. The magnetic head has a thin-film element and is provided with lead wires connected to the above-mentioned thin-film element. The inspection method consists of the following steps: grounding The process of disconnecting the terminal provided on the above-mentioned seat from the DCR detection device; while fixing the above-mentioned magnetic head on the above-mentioned base, the process of connecting the lead detection part extending from the magnetic head to the above-mentioned terminal; After a predetermined time has elapsed, a step of separating the base from the ground; and a step of connecting the above-mentioned terminals to a DCR detection device, and measuring the design characteristic (DCR) of the thin film element. The inspection method and inspection device do not burn the MR head when measuring the DC resistance of the MR head or when cutting the flexible printed circuit board or lead wires.

Description

[0001] This application is a divisional application of Chinese invention patent application No. 99100777.8. technical field [0002] The present invention relates to a magnetic head inspection method and inspection device capable of preventing quality deterioration or damage of thin film elements caused by electrostatic charging of insulator parts of wiring materials during the manufacturing process of magnetic head devices equipped with thin film elements. Background technique [0003] Figure 9 It is a perspective view of a thin-film magnetic head device installed on a hard disk device or the like. [0004] In this magnetic head device, a flexure 3 also serving as an elastic supporting member is attached to the front end of a load beam 1 serving as an elastic supporting member. A slider 4 made of ceramics is attached to the flexible member 3 . The slider 4 is supported by a fulcrum, and its posture relative to the load beam 1 can be changed. In addition, the mounting pla...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B5/39G11B5/455
Inventor 川田贞夫诸江道明
Owner TDK CORPARATION