JP3063174B2 - How to check the fixation of the magnetic head chip - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for confirming whether a magnetic head chip is fixed to a head base or not.

[0002]

2. Description of the Related Art Conventionally, this kind of method for confirming the fixation of a magnetic head chip is performed through the procedures shown in FIGS. That is, as shown in FIG.
After the magnetic head chip 2 adhered to the head base 1 is pressed by the pressurizing element 3 as shown in FIG. 1B, the presence or absence of a positional shift of the magnetic head chip 2 with respect to the head base 1 is detected by a position shift detector (not shown). It detects. In this case, if the magnetic head chip 2 has a positional shift due to the pressing, it is determined as “fixing failure” as shown in FIG. 4C, while if the magnetic head chip 2 has no positional shift due to the pressing, it is determined as “fixed”. I do. In the figure, reference numeral 4 designates a holder having the pressurizer 3 provided at the distal end thereof, which is provided so as to be able to move forward and backward by an elevating guide 5 and applies a pressing force to the magnetic head chip 2 on the head base 1. Is mounted between the holding member 4 and the pressurizing element 3 and the magnetic head chip 2
This is a spring that urges in the direction in which is pressed. Also, 7
Reference numeral denotes a stopper for movement restriction provided on the holding body 4 and located at an end opposite to the pressing element 3.

[0003]

By the way, in the conventional method of confirming the fixation of the magnetic head chip, the pressurizer 3 is brought into point contact or line contact with the magnetic head chip 2 on the head base 1. Therefore, there is a problem that the magnetic head chip 2 is easily subjected to stress concentration and a large impact force at the time of pressing, and the occurrence rate of loss or damage of the magnetic head chip 2 is increased. Further, the fact that the pressurizing element 3 is pressurized against the magnetic head chip 2 by point contact or line contact means that an external force close to practical use does not act on the magnetic head chip 2 at the time of pressurization, and a highly accurate chip fixation is confirmed. There was also a problem that can not be performed.

The present invention has been made in view of such circumstances, and it is possible to suppress the occurrence rate of chipping or damage of a magnetic head chip and to perform a highly accurate chip fixing confirmation. Is provided.

[0005]

According to the present invention, there is provided a method for confirming the fixation of a magnetic head chip, comprising the steps of: pressing a magnetic head chip adhered to a head base to detect the presence or absence of a chip position shift; In the method of confirming the fixation of the head chip, the pressing force on the magnetic head chip is stretched over a belt-like member having substantially the same mechanical characteristics as the recording medium, and the belt-like member and the magnetic head chip are pressed. It is provided by contact.

[0006]

According to the present invention, the belt-shaped member and the magnetic head chip can be brought into surface contact with each other at the time of pressing, and the magnetic head chip can be provided with a contact force close to practical use.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction of the present invention will be described below in detail with reference to the embodiments shown in the drawings.

FIGS. 1A and 1B are plan views showing a method for confirming the fixation of a magnetic head chip according to the present invention, in which the same members as those shown in FIGS. 2A to 2C are used. Are denoted by the same reference numerals, and a detailed description thereof will be omitted.
In the same figure, reference numerals 11 and 12 denote tape winding rollers which are arranged in parallel at predetermined intervals, and are fixed to one end of the mounting base 13 by screws. Reference numeral 14 denotes a guide extending in a direction perpendicular to the direction in which the rollers 11 and 12 are arranged in parallel, and is fixed on the mounting base 13. A spring locking member 15 is provided on the side to be adjustable. I have. Reference numeral 16 denotes a movable member having a spring engaging portion 17 corresponding to the spring engaging member 15 at an upper portion thereof. The movable member 16 is provided with a first roller 18 for tape guide, which is located in the vicinity of the spring locking portion 17, so as to be rotatable.

Reference numerals 19 and 20 denote a second roller and a third roller for tape guide, respectively, which are arranged in parallel at a predetermined interval from each other, and are provided at the edge of the mounting base 13 on the chip contact side. Numeral 21 is a tape having substantially the same mechanical characteristics as the recording medium, both ends of which are fixed to the tape winding rollers 11 and 12 and wound around the tape guide rollers 18 to 20. Has been
It is configured to be stretched on the mounting base 13 in the tape longitudinal direction. The tape 21 is formed of, for example, a cleaning tape or a wrapping tape (a fine abrasive grain coated on a belt-like member together with an adhesive or the like). Here, that the mechanical properties of the tapes 21 are the same means that the properties such as rigidity, hardness, friction coefficient, and surface roughness are the same.

Reference numeral 22 denotes a tension coil spring for applying a tension to the tape 21. Both ends are locked by the spring locking member 15 and the spring locking portion 17, respectively. By changing the type and effective length of the tension coil spring 22, the spring locking member 15
Is adjusted, the tension of the tape 21 can be changed, and this tension is set according to the fixing force of the magnetic head chip 2 to the head base 1. In the drawing, reference symbol A indicates a movement trajectory when the fixing of the magnetic head chip 2 is confirmed, and B indicates a contact position between the magnetic head chip 2 and the tape 21 during pressurization.

Next, a method for confirming the fixation of the magnetic head chip in this embodiment will be described.

That is, the fixing of the magnetic head chip 2 is confirmed by pressing the magnetic head chip 2 adhered to the head base 1 and detecting the presence or absence of a chip position shift.
This is a method for confirming the fixation of the magnetic head chip 2 to the head base 1, wherein the pressing force to the magnetic head chip 2 is adjusted by using, for example, a cleaning tape, a wrapping tape, etc. The tape 21 is stretched on the head base 1 by a tension coil spring 22 or the like, and the tape 21 and the magnetic head chip 2 are applied by pressurizing contact.

At this time, the motion trajectory of the magnetic head chip 2 is not particularly limited. However, the motion trajectory when the magnetic head chip 2 and the recording medium come into contact with each other in order to apply an external force close to practical use, It is desirable to set the movement trajectory A when the tape 21 and the tape 21 come into contact with each other. Further, since the position where the magnetic head chip 2 comes into pressure contact with the tape 21 is a localization value (contact position B),
It is desirable to change it before the tape 21 is worn.
In this case, the screw fixing of the tape winding rollers 11 and 12 is relaxed, and the contact position between the magnetic head chip 2 and the tape 21 is changed by rotating both rollers 11 and 12 in the same direction by the same amount. Note that the displacement of the magnetic head chip 2 is caused by the magnetic head chip 2 before and after pressing.
Is detected by, for example, image processing. The determination of “fixed” and “fixed defective” in the present invention is performed in the same manner as in the related art.

Therefore, in this embodiment, since the magnetic head chip 2 and the tape 21 can be brought into surface contact with each other at the time of pressurization, stress concentration and large impact force applied to the magnetic head chip 2 can be reduced.

In the present embodiment, since the tape 21 has substantially the same mechanical characteristics as the recording medium, the magnetic head chip 2 has a contact force close to practical use when pressurized.
Can be provided.

Furthermore, in the present embodiment, the tape 21 formed of a cleaning tape, a wrapping tape, or the like can provide a cleaning effect on the magnetic head chip 2.

In this embodiment, it is assumed that the fixing force of the head base 1 is set to a fixing force sufficiently larger than the fixing force of the magnetic head chip 1.

The magnetic head chip 2 of the present invention
The method for detecting the displacement and the motion trajectory when the magnetic head chip 2 contacts the tape 21 are not particularly limited.

[0019]

As described above, according to the present invention, the fixing of the magnetic head chip to the head base is confirmed by pressing the magnetic head chip bonded to the head base and detecting the presence or absence of chip position shift. In this method, a pressing force is applied to the magnetic head chip by stretching a band-shaped member having substantially the same mechanical characteristics as that of the recording medium, and bringing the band-shaped member and the magnetic head chip into pressure contact with each other. Therefore, the band-shaped member and the magnetic head chip can be brought into surface contact when pressed. Therefore,
Since the stress concentration and the large impact force applied to the magnetic head chip can be reduced, the occurrence rate of chipping or damage of the magnetic head chip can be suppressed.

Further, the fact that the mechanical properties of the band-shaped member are substantially the same as the mechanical properties of the recording medium means that the contact force close to the practical use can be applied to the magnetic head chip at the time of pressurization, so that the precision is high. It is possible to confirm chip fixation.

Further, if the belt-shaped member is formed of a cleaning tape, a wrapping tape, or the like, a cleaning effect on the magnetic head chip can be obtained.

[Brief description of the drawings]

FIGS. 1A and 1B are plan views showing a method for confirming the fixation of a magnetic head chip according to the present invention.

FIGS. 2A, 2B and 2C are plan views showing a conventional magnetic head chip fixing method.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Head base, 2 ... Magnetic head chip, 11, 12
... Roller for winding tape, 13 ... Base for mounting, 1
8 to 20: roller for tape guide, 21: tape, 2
2. Tension coil spring.

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G11B 5/455

Claims (1)

(57) [Claims] 1. A method for confirming the fixation of a magnetic head chip to a head base by detecting the presence or absence of a chip position shift by pressing a magnetic head chip adhered to a head base. Is applied by stretching a band-shaped member having substantially the same mechanical properties as the recording medium, and applying pressure contact between the band-shaped member and the magnetic head chip. Fixed confirmation method.