JPH0963012A - Magnetic head, its production and production apparatus therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a process for production which is capable of independently and most adequately designing a track aligning device and a gap forming device by introduction of a temporally fixing stage to a process for producing magnetic heads and simultaneously satisfying the track alignment accuracy and track length accuracy of a large-area substrate and is high in production efficiency. SOLUTION: A first core half body block 1 and a second core half body block 7 are brought into pressurized contact with each other in the state of aligning the tracks of both core half body blocks 1, 7 on the track aligning device. Next, the ends of both core half body blocks 1, 7 brought into pressurized contact are temporally fixed to each other. The core half body blocks 1, 7 temporally fixed to each other are then taken out of the track aligning device. The temporally fixed core half body blocks 1, 7 are thereafter placed on a gap forming device and are pressurized. The core half body blocks are heated in a heating furnace in the stage of pressurizing these blocks, by which gaps are formed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic head, a method for manufacturing the same, and a manufacturing apparatus therefor, and more particularly to a method and a manufacturing apparatus for a magnetic head by a so-called plate method.

[0002]

2. Description of the Related Art In recent years, magnetic recording technology has been in the direction of higher density, and it is required for magnetic heads to satisfy high track alignment accuracy and gap length accuracy. Further, with the spread of VTRs and the like, there is a demand for magnetic heads of lower cost. However, in the conventional magnetic head manufacturing method, there was a problem in mass productivity when trying to satisfy the track alignment accuracy and the gap length accuracy. The so-called bar method and plate method have been put into practical use as magnetic head manufacturing methods. However, the plate method in which the magnetic heads are arranged two-dimensionally is better than the bar method in which the magnetic heads are arranged one-dimensionally. It is possible to take a larger number of pieces and is excellent in mass productivity. However, the board size that is practically used in the plate construction method is about 20 to 30 mm on a side, and if the board size is increased to 50 mm or more on a side to increase mass productivity, both track alignment accuracy and gap length accuracy are increased. Was difficult to satisfy at the same time.

A conventional magnetic head manufacturing method will be described below with reference to FIGS.
15 will be described. FIG. 13 shows the first core half block 44 after the groove processing, wherein 45 is a substrate made of Mn-Zn single crystal ferrite or the like, 46 is a glass groove, 47 is a winding groove, and 48 is a track width regulating groove. , 49 are gap surfaces. The dimensions of the substrate are generally about 25 mm × 25 mm.

FIG. 14 shows a second core half block 50 after groove processing. Reference numeral 51 is a substrate made of Mn-Zn single crystal ferrite or the like, 52 is a track width regulating groove, and 53 is a gap surface. FIG. 15 shows a track alignment and gap forming device. An example of a conventional apparatus for performing track alignment and gap formation by forming a gap material on the gap surfaces of both core half blocks 44 and 50 and then facing the gap surfaces will be described in detail in JP-A-6-349021. Has been described. Reference numeral 54 denotes an apparatus main body, in which a plastic deformable material 55 such as mica that is easily plastically deformed is disposed on one of the rear surfaces of the core half blocks 44 and 50 whose gap surfaces face each other. 56, a heat-resistant disc spring 57, a disc spring receiving plate 58, and a pressing screw 59 are arranged.
Track position adjusting screws 60 and 61 are provided on both side surfaces of the core half block 50 parallel to the track width regulating groove. In that state, by rotating the pressing screw 59 until the tip of the pressing screw 59 contacts the disc spring receiving plate 58, the elastic force of the heat resistant disc spring 57 is transmitted to both the core half blocks 44 and 50 via the pressing plate 56. Both core half blocks 44,
50 is fixed so that it can slide in the direction of arrow D. Next, the plastically deformable material 55 and the core half block 44 in contact therewith
After fixing and to each other with the adhesive 62, the core half block 50 is moved to the arrow D by using the track position adjusting screws 60 and 61.
Slide in the direction to align the track in place. Further, the pressing screw 59 is pressed to a predetermined pressure.
Next, the gap can be formed by maintaining the entire apparatus to which a predetermined pressure is applied at the working temperature for forming the gap.

[0005]

However, in the above-mentioned conventional manufacturing method, there are many restrictions because the track aligning step and the gap forming step are carried out by the same apparatus. That is, if the size of the substrate is increased to improve mass productivity, it is difficult to simultaneously satisfy the track alignment accuracy and the gap length accuracy. For example, using a 50 mm square large substrate, 1 μm
It was impossible to obtain the following track alignment accuracy with the above-mentioned conventional device. When a more precise device is designed to improve this problem, the structure of the device becomes delicate and complicated, and the heat resistance of the device is not affected by the working temperature of gap formation, for example, high temperature of 750 ° C and pressure of several tens of kg at high temperature. Was insufficient, and it was difficult to realize a device that can withstand repeated use.

The present invention solves the above-mentioned conventional problems, and an object of the present invention is to provide a manufacturing method and a manufacturing apparatus which simultaneously satisfy the track alignment accuracy and the gap length accuracy.

[0007]

In order to achieve this object, according to the method of manufacturing a magnetic head of the present invention, both core halves are formed until a gap is formed in both core half blocks in the gap forming step and they are completely joined. The point is that the track alignment step and the gap formation step are made independent by newly providing a temporary fixing step in order to temporarily hold the blocks in the track aligned state. That is, in a state where the tracks of the first core half block and the tracks of the second core half block are track-aligned on the track alignment device, a step of press-contacting both core half-blocks and both cores press-contacted A step of temporarily fixing the ends of the half blocks to each other, a step of taking out both core half blocks temporarily fixed to each other from the track aligning device, and placing both of the temporarily fixed core half blocks on the gap forming device. And pressurizing, and heating in a heating furnace in a pressurized state to form a gap.

[0008]

By introducing the temporary fixing step in this way, the track aligning step and the gap forming step can be made independent, and the above conventional problems can be solved.
That is, the track aligning process and the gap forming process are not performed by the same device as in the conventional example, but by using the optimally designed devices, the track aligning accuracy and the gap length accuracy can be satisfied at the same time.

[0009]

【Example】

(Embodiment 1) An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a first core half block 1 after groove processing, 2 is a substrate made of Mn-Zn single crystal ferrite or the like, 3 is a glass groove, 4 is a winding groove, 5 is a track width regulating groove. , 6 are the first core half block gap surfaces. The substrate size is 50 mm × 50 mm.
FIG. 2 shows the second core half block 7 after grooving, and 8 is a substrate made of Mn-Zn single crystal ferrite or the like,
Reference numeral 9 is a track width regulation groove, and 10 is a second core half block gap surface. Here, the length of the second core half block 7 in the direction parallel to the track width regulating groove 9 is 50 mm, but the length in the perpendicular direction is 48 mm, and the track width regulation of the first core half block 1 is 48 mm. 50m in the direction perpendicular to the groove 5
It is desirable to make it shorter than m. The glass rod inserting step, the track aligning step, the temporary fixing step, and the gap forming step, which are the main steps after forming the gap material on the gap surfaces of both core half blocks 1 and 7, are described in this order.

FIG. 3 is a diagram for explaining the glass rod inserting step. After the first core half block 1 is vacuum-adsorbed and fixed with the gap surface 6 facing upward on the lower vacuum suction table of the track alignment device described later with reference to FIGS. 7 to 9, the glass rod 11 is inserted into each glass groove 3. . FIG. 4 is a diagram for explaining the track alignment process. The second core half block 7 vacuum-adsorbed and fixed on the upper vacuum suction table of the track aligning device is placed on the gap surface of the first core half block 1 into which the glass rod 11 is inserted with the gap surface facing down. Face and face each other. The distance between the gap surfaces of both core half blocks is set to several μm.
The first core half block 1 is replaced with the second core half block 7
Track alignment between both core half blocks is performed by adjusting X-Y- [theta] relative to each other, and then both core half blocks 1 and 7 are pressed against each other. As described with reference to FIG. 2, the length of the second core half block 7 in the direction perpendicular to the track width restricting groove 9 is the length in the direction perpendicular to the track width restricting groove 5 of the first core half block 1. Since both core half blocks 1 and 7 are in pressure contact with each other, a part of the gap surface 6 of the first core half block 1 is part of the second core half block 1 as shown in FIG. It is in a state of protruding from 7.

FIG. 5 is a diagram for explaining the temporary fixing step. In a state in which both core half blocks 1 and 7 are pressed against each other between the lower vacuum suction table and the upper vacuum suction table of the track aligning device,
The adhesive 13 is applied between the gap surface 6 of the first core half block 1 and the end surface 12 of the second core half block 7 protruding from the core half block 7 and cured. A point to be noted in this step is to prevent the adhesive from adhering to a plane other than the gap surface of both core half blocks. If adhered, the protrusions of the adhesive impede uniform pressing in the subsequent gap forming step, and the accuracy of the gap length in the vicinity of the protrusions of the adhesive deteriorates. From this point as well, the fact that the length in the direction perpendicular to the track width regulating groove of the second core half block 7 is shorter than the length in the direction perpendicular to the track width regulating groove of the first core half block 1 means that the bonding work is performed. This is convenient because there is room in space and it can be applied in a narrow area.

Here, points to be taken into consideration in the case of the temporary fixing method using the adhesive are the penetration of the adhesive into the gap surface, the influence of the gas generated from the adhesive, the workability and the like. Regarding the invasion of the adhesive into the gap surface, there is a problem that the adhesive intrudes into the gap even when the gap surface is pressed and pressed and the accuracy of the gap length in the vicinity of the intrusion portion of the adhesive cannot be ensured. As a result of investigating various adhesives for penetration into the gap, when the viscosity is 400 P or less, the penetration of the adhesive into the gap interface reaches 0.5 mm or more, and the gap length precision rejection range near the adhesive penetration point is It was impossible to put it into practical use. When the viscosity was 3,000 P or more, the penetration of the adhesive into the gap interface was 0.2 mm or less, and the range of failure occurrence of the gap length accuracy in the vicinity of the location where the adhesive penetrated was within a practically acceptable level. In the viscosity range of 400 to 3,000 P, some were usable and some were not usable depending on the type of adhesive. Next, as a result of examining the effect of the gas generated from the adhesive at high temperature during gap formation, depending on the adhesive, this gas adheres to the gap surface and the track groove wall, resulting in insufficient glass filling and bubbles. There was a case where the yield was poor due to inconveniences such as
When the pressure was 0 P or more, the result that the amount of gas generated was considered to be small was obtained. However, the effect of gas is small in the UV curing type,
There was almost no problem in practical use. Further, in terms of workability, the thermosetting type is inconvenient because it takes a long curing time to occupy the track aligning device for a long time and heats the track aligning device. Instant adhesives and UV curable adhesives have a short curing time and good workability. Summing up the above, the UV curable adhesive having a viscosity of 3,000 P or more was optimum.

Next, the gap forming step will be described. Both core half blocks 1 and 7 that have been temporarily fixed are placed on a gap forming device similar to that shown in FIG. 15, and pressure is applied from both sides, and the entire gap forming device is maintained at a working temperature for forming a gap, thereby forming a gap. carry out. After that, the magnetic head is manufactured by a normal process. In the above description, the glass rod inserting step does not necessarily have to be performed before the track aligning step, and the glass rod may be inserted after sequentially performing the track aligning step and the temporary fixing step. But one side is 50
Since a glass rod becomes long on a large substrate of about mm, 20
Inserting ~ 30 glass rods into a narrow glass groove is poor in workability, and the above process sequence of FIGS. 1 to 5 is superior.

In order to carry out the glass rod inserting step before the temporary fixing step as shown in FIGS. 1 to 5, the first core half block 1 is track-aligned as shown in FIG. After vacuum adsorption and fixing with the gap surface 6 facing upward on the lower vacuum suction table of the apparatus, the glass rod 11 is attached to each glass groove 3
Need to be inserted into. If the second core half block 7 is vacuum-adsorbed and fixed on the lower vacuum suction table of the track aligning device with the gap surface 10 facing up, it is necessary to accurately control the arrangement position of the glass, which is a difficult task. Becomes

(Second Embodiment) Next, a second embodiment of the present invention will be described. The process up to the track alignment process is the same as in the first embodiment. The difference from the first embodiment is that a laser beam is used as a temporary fixing method without using an adhesive. In the first embodiment, while supplying the glass rod to the position where the adhesive is applied, the glass is irradiated with the laser beam to melt the glass, and at the same time, the substrate in the vicinity of the glass supply place is also heated by the laser beam to weld the both, and It is a method of fixing. The carbon dioxide laser was the most suitable type of laser.

(Embodiment 3) Next, a third embodiment of the present invention will be described. It is a modification of the second embodiment and is a temporary fixing method in which a laser beam is irradiated while preheating the substrate to 500 ° C. or higher. In the method of the second embodiment, not only it is necessary to heat the glass to a temperature equal to or higher than the melting point with a laser beam, but it is also necessary to heat the substrate temperature to a high temperature at which the glass and the glass melt each other. It has been found that when temporary fixing by welding is performed only by laser beam heating without preheating, the ferrite substrate has a problem that cracks easily occur in the substrate. To prevent substrate cracking, preheat the substrate temperature to 500 ° C.
It was necessary to irradiate the laser beam while maintaining the above. If a preheating device is provided in a part of a precision device such as a track alignment device, expansion of the device member occurs, so it is necessary to give sufficient consideration to the design in order to ensure a track alignment accuracy of 1 μm or less. .

(Fourth Embodiment) Next, a fourth embodiment of the present invention will be described. The process up to the track alignment process is the same as in the first embodiment. The difference from the first embodiment is that the glass rod insertion step is performed after the temporary fixing step in the order of steps. Specifically, the glass is inserted into the glass groove surrounded by the upper and lower sides from the side surface. In the first embodiment, the example in which the glass rod insertion step is performed before the temporary fixing step has been described, but it is also possible to reverse this order and insert the glass rod after the temporary fixing. In this case, if the glass groove cross-sectional area is smaller than the glass cross-sectional area, it is difficult to insert the glass rod, and the glass rod may be broken, so care must be taken.

(Fifth Embodiment) Next, a fifth embodiment of the present invention will be described with reference to the drawings. The steps up to the glass rod insertion step are the same as those in the first embodiment. The difference from the first embodiment is that the lengths of the core half blocks 1 and 7 in the direction perpendicular to the track width regulating grooves 5 and 9 are the same.

FIG. 6 is a diagram for explaining the temporary fixing step in this case. Reference numeral 14 denotes an end face of the first core half block.
The adhesive 13 may be applied and cured so as to straddle the end faces 12 and 14 of both core half blocks 1 and 7. (Embodiment 6) Next, a track aligning apparatus according to a sixth embodiment of the present invention will be described with reference to FIGS.
FIG. 7 is an explanatory diagram of the track aligning device referred to in FIGS. Reference numeral 1 is a first core half block, 7 is a second core half block, 21 is a lower vacuum suction table, 22 is an upper vacuum suction table, 23 is an XYZ-θ fine movement table, and 24 is an X axis. A fine movement knob, 25 is a Y axis fine movement knob, 26 is a Z axis fine movement knob, 27 is a θ axis fine movement knob, and 28 is a surface plate which supports the entire apparatus.

Next, the operation of the apparatus shown in FIG. 7 will be described. The second core half block 7 vacuum-adsorbed and fixed on the upper vacuum suction table 22 with the gap surface facing down, and the first core half body vacuum-fixed on the lower vacuum suction table 21 with the gap surface facing up Place block 1. Next, turn the Z-axis fine adjustment knob 26 to set the gap surface distance between the core half blocks 1 and 7 to several μm.
Adjust to, while watching the image from the objective lens in Figure 8,
The first core half block 1 is replaced with the second core half block 7
Track alignment between both core half blocks is performed by adjusting X-Y- [theta] relatively. Next, the Z-axis finely moving knob 26 is rotated to press the core half blocks 1 and 7 into pressure contact with each other. Of course, air pressure can also be used as the pressure contact mechanism. Further, in FIG. 7, an example in which all the XYZ-θ fine movement mechanisms are provided in the lower vacuum suction table has been described. For example, the Z fine movement mechanism is provided in the upper vacuum suction table, and the XY-θ fine movement mechanism is provided. Of course, it may be provided in the lower vacuum suction table. Further, a spherical seat can be provided on the lower vacuum suction table in order to cope with uneven substrate thickness and lack of parallelism between the upper and lower vacuum suction tables.

FIG. 8 is a view for explaining a main part of the track aligning device of FIG. 7, and is a plan view of the vicinity of both core half blocks 1 and 7. Reference numerals 29 to 32 denote four objective lenses, the optical axes of which are parallel to the track width regulating groove, and their positions are arranged on the left and right sides of the two end faces where the contours of the track cross sections of both core half blocks can be seen, and as far as possible from each other. Are placed at four locations, front left, rear left, rear right, and front right, so that the contours of the track sections separated from each other can be seen. Each objective lens is connected to a dedicated microscope, an illumination device, a TV camera, an image synthesizing device, a microscopic device, etc., which holds the objective lens, and the output is displayed on a monitor.

FIG. 9 shows an example of an image on each monitor of four objective lenses. 33 is a contour image of the track cross section of the second core half block, and 34 is a contour image of the track cross section of the first core half block. Since the second core half block 7 is fixed in the track aligning device of FIG. 7, the first core half block 1 is moved by operating the XY-θ fine movement knobs 24, 25, 27. The fine movement knobs are adjusted so that the tracks coincide with each other, the tracks are aligned within a predetermined accuracy, and the Z-axis fine movement knob 26 is operated to press and press both core half blocks. As an example of the objective lens, for example, if a 100 × objective lens with a working distance of 4.8 mm and an ultra-long working distance is used, the total magnification of a microscope, a TV camera, and a monitor is about 2,000 times.
The accuracy of less than μm can be sufficiently secured.

In the track alignment apparatus shown in FIGS. 7 to 9, the contour images of the track cross sections at the four corners of the substrate can be simultaneously projected on each monitor by the four objective lenses, which contributes to improvement in accuracy and workability. To do. (Embodiment 7) Next, a track alignment apparatus with a laser beam irradiation apparatus according to a seventh embodiment of the present invention will be described with reference to FIG.
This will be described with reference to FIG. The basic configuration of the device is the same as in FIGS. 7 to 9, except that a laser device is provided. FIG.
Reference numeral 35 denotes a laser device, 36 denotes a mirror, and 37 denotes a laser beam, which can irradiate the laser beam to the end face to be temporarily fixed. It can be fixed.

(Embodiment 8) Next, an eighth embodiment of the present invention will be described with reference to the drawings. This is devised so that the contour image of the track cross section can be observed sharply on the screen of FIG. 11 and 12 are diagrams for explaining the present embodiment. FIG. 11 shows a modified first core half block 38. Numerals 39 and 40 are mirror-finished grooves which are formed at right angles to the track width regulation groove and near the end face by using a dicer. The processing depth is sufficient if it is a depth perpendicular to the track gap surface. As a grindstone used for the dicer, for example, a resin-bonded grindstone containing # 1,000 diamond abrasive grains is used to obtain a processed surface close to a mirror surface.

FIG. 12 shows a second core half block 41 which has been improved so that the contour image of the track cross section can be sharply observed on the screen of FIG. Reference numerals 42 and 43 denote mirror-finished grooves formed near the end faces by using the above-mentioned grindstone at right angles to the tracks. Generally, the end face of the substrate used in the plate method is still cut, the smoothness is poor, and a sharp contour image of the track cross section as shown in FIG. 9 cannot be obtained. By mirror-polishing the end surface before performing the groove processing on the substrate, a sharp contour image of the track cross section as shown in FIG. 9 can be obtained. However, the mirror-polished end surface has flaws and chips on the end surface as it undergoes subsequent groove processing and other steps,
It is often the case that a sharp contour image of the track cross section cannot be obtained as shown in FIG.

By forming mirror-finished grooves as shown in FIGS. 11 to 12, a sharp contour image of a track cross section as shown in FIG. 9 could be obtained. It was found that this method has the following advantages. (1) Since the mirror surface portion is located inside the end surface of the substrate, the mirror surface portion is protected by the end surface of the substrate and is not easily scratched. (2) Since the mirror surface processing may be performed after the processing of the glass groove, the winding groove, the track width regulation groove, etc. is completed, the number of steps up to the track aligning step is small, and the chance of scratching the mirror surface portion is small. (3) Since the already processed track width regulation groove is processed at a right angle, the track can be accurately formed at a right angle. Moreover, since the two mirror surface portions are continuously processed by the dicer, the parallelism of the mirror surfaces can be ensured to be excellent parallelism determined by the machine accuracy of the dicer. As a result, the focusing operation of the objective lens in the track adjusting process can be performed in a short time, and the workability is excellent. This is a practically important point considering that the depth of focus of the 100 × objective lens is only 0.5 μm, and it takes a considerable time to search for a predetermined region to be observed.

[0027]

As described above, according to the present invention, the tracks of the first core half block and the tracks of the second core half block are track-aligned on the track alignment device, and both core halves are formed. The step of pressing the blocks together, the step of temporarily fixing the ends of the pressed core half blocks to each other, the step of taking out the core half blocks temporarily fixed to each other from the track aligning device, and the step of temporarily fixing both It is characterized in that it comprises a step of placing the core half block on the gap forming device and pressurizing it, and a step of heating the core half block in a heating furnace in a pressurized state to form a gap. By introducing the above, the track aligning step and the gap forming step can be made independent, and the conventional problems can be solved. That is, unlike the conventional example, the track aligning process and the gap forming process are not performed by the same device, but by using the optimally designed devices, the track aligning accuracy and the gap length accuracy can be simultaneously satisfied. The method of manufacturing the head can be realized.

[Brief description of drawings]

FIG. 1 is a diagram showing a first core half block after grooving according to the present invention.

FIG. 2 is a diagram showing a second core half block after grooving in the present invention.

FIG. 3 is a diagram illustrating a glass rod inserting step in the present invention.

FIG. 4 is a diagram illustrating a track aligning process in the present invention.

FIG. 5 is a diagram illustrating a temporary fixing step in the present invention.

FIG. 6 is a diagram illustrating a temporary fixing step in the present invention.

FIG. 7 is an explanatory view of a track aligning device according to the present invention.

FIG. 8 is a diagram illustrating a main part of the apparatus.

FIG. 9 is a diagram showing an example of an image on a monitor of each objective lens in the same device.

FIG. 10 is an explanatory view of a track alignment device with a laser irradiation device according to the present invention.

FIG. 11 is a view showing a first core half block having a mirror-finished groove according to the present invention.

FIG. 12 is a view showing a second core half block having mirror-finished grooves according to the present invention.

FIG. 13 is a view showing a conventional first core half block after grooving.

FIG. 14 is a view showing a conventional second core half block after grooving.

FIG. 15 is a diagram illustrating a conventional track alignment / gap forming device.

[Explanation of symbols]

1 1st core half block 2 substrate 3 glass groove 4 winding groove 5 track width regulation groove 6 1st core half body block gap surface 7 second core half body block 8 substrate 9 track width regulation groove 10 second Core half block gap surface of 11 glass rod 12 second core half block end surface 13 adhesive 14 first core half block end surface 21 lower vacuum suction table 22 upper vacuum suction table 23 XYZ-θ fine movement Table 24 X axis fine movement knob 25 Y axis fine movement knob 26 Z axis fine movement knob 27 θ axis fine movement knob 28 Surface plate 29 to 32 Objective lens 33 Contour image image of track cross section of second core half block on monitor 34 On monitor Contour image image of the track cross section of the first core half block of the laser 35 Laser device 36 Mirror 37 Laser beam

Claims (13)

[Claims] 1. A step of press-contacting both core half blocks in a state where the first core half block and the second core half block are track-aligned on a track alignment device,
A step of temporarily fixing the end portions of both core half blocks pressed together, a step of taking out both core half blocks temporarily fixed to each other from the track aligning device, and a gap formation of both temporarily fixed core half blocks A method of manufacturing a magnetic head, comprising: a step of placing the apparatus on a device and pressurizing; and a step of heating in a heating furnace in a pressurized state to form a gap. 2. A magnetic head manufactured by the manufacturing method according to claim 1. 3. The manufacturing of a magnetic head according to claim 1, wherein a track aligning step and a temporary fixing step are performed after the step of inserting the glass rod into the glass groove of the first core half block on the track aligning device. Law. 4. The first core has a length in the direction perpendicular to the track width regulating groove of the second core half block shorter than a length in the direction perpendicular to the track width regulating groove of the first core half block. With the gap faces of the half blocks facing upward and the gap faces of the second core half blocks facing downward, the two core half blocks are pressed together in a track aligned state, and the second core half blocks are pressed. The first protruding from the body block
2. The method of manufacturing a magnetic head according to claim 1, wherein the gap surface of the core half block and the end surface of the second core half block are temporarily fixed. 5. The method of manufacturing a magnetic head according to claim 1, further comprising a step of temporarily fixing with an adhesive. 6. The method of manufacturing a magnetic head according to claim 1, further comprising a step of temporarily fixing with an adhesive having a viscosity of 3,000 P or more. 7. The method according to claim 1, further comprising a step of temporarily fixing using a UV-curable adhesive having a viscosity of 3,000 P or more.
A method for manufacturing the magnetic head described. 8. The method of manufacturing a magnetic head according to claim 1, further comprising the step of temporarily fixing the glass by laser beam irradiation. 9. The method of manufacturing a magnetic head according to claim 1, further comprising a step of preheating both core half blocks and temporarily fixing them by glass welding by laser beam irradiation. 10. A vacuum suction table for horizontally fixing the first core half block, a vacuum suction table for horizontally fixing the second core half block, and both vacuum suction tables relatively in X and Y. ,
A mechanism for moving in the Z and θ axis directions, four objective lenses arranged on the left and right of the two end faces where the optical axis is parallel to the track width regulating groove and the contour of the track cross section of both core half blocks can be seen, and both cores A magnetic head manufacturing apparatus comprising: a pressing mechanism for pressing a half block. 11. The magnetic head manufacturing apparatus according to claim 10, wherein a carbon dioxide laser device capable of irradiating a laser beam is provided on two end faces where the contours of the track cross sections of both core half blocks can be seen. 12. The method according to claim 1, further comprising a step of observing the contours of the track cross sections of both core half blocks having mirror-polished end faces perpendicular to the track width regulating groove during track alignment.
A method for manufacturing the magnetic head described. 13. A step of observing the contour of the track cross section of both core half blocks having a mirror surface portion processed by a grindstone near the substrate end of the end surface perpendicular to the track width regulating groove at the time of track alignment. 1. The method for manufacturing a magnetic head according to 1.