JPS618718A - Adjusting device of magnetic head - Google Patents

Abstract

PURPOSE:To adjust the azimuthal deviation easily with high precision by supporting an azimuth adjusting plate, which is turned around a head gap, with a head carriage after the gap deviation of the head is adjusted. CONSTITUTION:A head block 45 whose projecting quantity, angle of inclination, misalignment, and flapping as the positional deviation from the center of interference fringes and the positional deviation from crossing lines are adjusted is stuck to an azimuth adjusting plate 256. The adjusting plate 256 can be turned around a pin 264 just under a head gap G, and a large-diameter part 272 of an eccentric pin 270 is inserted to a hole 266 of a head carriage 32, and a small- diameter part 274, and its axis is eccentric. Consequently, when the pin 270 is turned, the adjusting plate 256 is turned also, and a head 46 is turned around the gap G, and thus, the azimuthal deviation is adjusted easily with high precision.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a magnetic head adjustment device, and more particularly to a magnetic head adjustment device used in a magnetic recording or reproducing device such as an electronic camera.

[Background of the invention]

Recently, imaging devices such as solid-state image sensors and image pickup tubes are combined with recording devices that use magnetic disks, which are inexpensive and have a relatively large storage capacity, to photograph objects purely electronically, using a rotating magnetic sheet. Electronic camera systems have been developed in which images are recorded on the computer and the images are played back using a separate television system or printer.

By the way, this type of magnetic sheet used in electronic cameras and the like differs from the magnetic sheet used in general magnetic recording and reproducing devices, in that it records still images or video information at high density, and rotates at high speed. . Therefore, magnetic heads that record on or read from magnetic sheets by contacting them are used in electronic cameras and the like because of the need for accurate alignment adjustment with respect to the magnetic sheets.
A magnetic head used for recording or reproducing still image information requires five adjustments relative to the magnetic sheet: (1) protrusion amount, (2) tilt angle, (2) center shift, (2) azimuth shift, and (2) tilt. Of these, (2) tilt angle and (2) tilt, if they are minute, can be dealt with only by head aging without adjustment. These five adjustments will be sequentially explained below with reference to FIGS. 1 to 3.

In FIG. 1, reference numeral 10 denotes a magnetic sheet, 12 a magnetic head for recording or reproducing information on the magnetic sheet 10, and 14
is a regulation plate that is provided at a position facing the magnetic head 12 with the magnetic sheet 10 in between, and allows the magnetic sheet 10 to align with the magnetic head 12.

The magnetic head 12 requires a protrusion amount Ea within a predetermined range with respect to the magnetic sheet 10, and precise adjustment is required in order to perform better recording and reproduction and prevent wear of the magnetic head and recording medium. be.

In addition, in order to obtain a good reproduced image even when the same recording medium is loaded into different playback machines, we also recommend that the recorder and playback machine be configured separately (the recording head and the playback head may be separated). If a separate one is used, its inclination angle θa as shown in FIG. 1, the amount of deviation Eb of the magnetic helad 12 from the center of the magnetic sheet 10 and the azimuth deviation θb shown in FIG.
Furthermore, as shown in FIG. 3, the tilt angle θC of the magnetic head with respect to the magnetic sheet 10 must be within a predetermined compatible range.

By the way, the adjustment of the azimuth angle is different from the adjustment of the protrusion amount, inclination angle, center shift, tilt angle, etc., and is an adjustment in which the azimuth angle θb is brought close to zero by rotating the magnetic head around its head gap. Therefore, the adjustment method is troublesome, and the adjustment device is also complicated because this type of magnetic disk device used in electronic cameras requires extremely high accuracy with an azimuth error of less than 16 minutes. .

[Purpose of the invention]

The present invention has been made in view of the above circumstances, and it is an object of the present invention to propose a magnetic head adjustment device that can easily and accurately adjust azimuth deviation.

[Summary of the invention]

In order to achieve the above object, the present invention provides that the magnetic head is mounted on an azimuth adjustment plate after adjusting the protrusion amount, inclination angle, center deviation, and tilt using an adjustment jig, and the azimuth adjustment plate is centered on the hennodic cassock of the magnetic head. The magnetic head according to the present invention is rotatably supported by a head carriage so as to rotate, and the azimuth angle is adjusted by rotating an azimuth adjustment plate. A preferred embodiment of the adjusting device will be described in detail.

FIG. 4 shows a plan view of a magnetic seat back used in a magnetic recording or reproducing device such as an electronic camera, and FIG. 5 is a sectional view taken along line 1--1 in FIG. 4. As shown in FIG. 4, the magnetic seat back 16 has a substantially rectangular shape.
Magnetic sheet 18 on which still image information etc. are recorded
is rotatably stored. A center core 20 as a reinforcing member is provided in the center of the magnetic sheet 18, and this center core 20 is exposed to the outside through a circular opening 22 of the magnetic seat back 16, and a central core 20 is provided in the opening 22. supported. A window 24 in which a magnetic head, which will be described later, is located is opened in the magnetic sheet pack 16, and this window 24 for the magnetic head is opened and closed by a slideable shutter 26.

That is, the shank 26 closes the window 24 to prevent dust from adhering to the magnetic sheet 18 before the magnetic sheet pack 16 is inserted into the inner bucket, which will be described later. Then, the shutter 26 moves downward in FIG. 4 to open the head window 24, making it possible to record and reproduce information on the magnetic sheet 18.

In FIG. 6, a magnetic recording or reproducing device is shown, and the magnetic recording or reproducing device is composed of a chassis 28, an inner bucket 30 into which the magnetic sheet pack 16 is inserted, and an upper lid 32. First, to explain the internal structure of the chassis 28, a motor 34 for driving a magnetic sheet is disposed in the chassis 28, and when the top cover 32 is closed, this motor 3
The drive shaft 36 of No. 4 fits into the center hole 21 of the center core 20 of the magnetic sheet pack 16 shown in FIG. 5, and rotates the magnetic sheet 18 within the magnetic sheet pack 16 at a predetermined number of rotations.

Further, in FIG. 6, 38 is a motor for driving the magnetic head;
40 is a lead screw; 42 is a head carriage that is screwed together with the lead screw 40 and is moved by the lead screw 40;
44 is a guide shaft, and 46 is a magnetic helad attached to the head carriage 42 via an L-shaped head block 45. Therefore, the motor 38 rotates at a predetermined number of revolutions.
When rotated, the head carriage 42 is moved in the axial direction of the guide shaft 44 every predetermined pinch, and therefore the magnetic head 46 is moved in the radial direction of the magnetic sheet 18 (direction A in FIG. 6), and Still image information can be recorded or reproduced by forming a circular or spiral track on the recording medium 18.

A leaf spring 5 bent into a crank shape is provided on the back side of the upper lid 32.
0.50 are provided at predetermined intervals, and this leaf spring 50.50
A regulating plate holder 52 is attached to. Regulating plate holder 5
2 has a length corresponding to approximately the entire width of the chassis 28, and as shown in FIG. There is. A groove 56 is formed in the regulation plate 54 in the direction of movement of the magnetic head 46 . On the other hand, the sixth
In the figure, the receiver pin 58 is installed on the left side, and the receiver pins 60 and 62 are installed on the right side.

When the top cover 32 is closed, the pins 58, 60, and 62 abut or fit into the elongated hole 53, holder surface 55, and round hole 57 provided in the regulating plate holder 52, respectively, so that the regulating plate 54
The height is regulated to maintain a predetermined distance from the magnetic head 46, and accurate positioning is performed.

FIG. 7 shows the relationship between the chassis 28 as an assembly and the regulation plate 54. As shown in Figure 7, the upper lid 3
2 is closed, the regulating plate holder 52 is supported by pins 58, 60, 62 (the pin 60 is not shown), and the regulating plate 54 is predetermined with respect to the magnetic helad 46. Can be located at a very small distance. That is, in a magnetic disk drive, the regulating plate 54 is required to regulate the height of the magnetic head 46 with extremely high precision, and the height of the regulating plate 54 is controlled by the pins 58, 60, 62, Therefore, the pins 58, 60, 62 of this receiver are formed with extremely high precision. Further, the position of the drive shaft 36 with respect to the magnetic head 46 is determined with high precision, and therefore the drive shaft 36 is also set at a predetermined position extremely strictly on the chassis 28. As will be described later, in the magnetic head adjustment jig device, the drive shaft 36 and pins 58, 60, and 62 are used as a reference for positioning the chassis 2B. That is, the drive shaft 36 is connected to the chassis 2
8 is used as the reference center for positioning adjustment, and the receiver is pin 58.
60.62 is the reference height for positioning adjustment of the chassis 28.

FIG. 8 shows a schematic structure of a jig device for adjusting the protrusion amount, inclination, center deviation, and tilt of the magnetic head. As shown in FIG. 8, this magnetic head adjustment jig device has a base 70.
, a mounting jig 72 that stands up on the base 70 and supports the chassis 28, a magnetic head holding means 74 that attracts and temporarily holds the head block 45 to which the magnetic head 46 is attached;
Hole direction moving means 76 that can move the magnetic head holding means 74 in six directions with respect to the mounting jig 72; Measuring means 78
, an ultraviolet irradiation device 79 for curing adhesive for attaching the magnetic head.

First, the mounting jig 72 will be described. The mounting jig 72 is composed of an oval-shaped mounting plate 80, and the lower end of this mounting plate 80 is fixed onto the heath 70 with screws 82. A rectangular opening window 84 is formed in this mounting plate 72.
The magnetic head holding means 74 is located in this opening 84 so as to be movable in the inward direction. Further, a reference hole 86 is formed in the center of the mounting plate 80, and a rectangular parallelepiped-shaped reference protrusion 88 is protruded below the reference hole 86. The drive shaft 36 of the chassis 28 is fitted into the reference hole 86, and the reference protrusion 88 contacts the lead screw 40 when the chassis 28 is mounted on the mounting plate 80, and moves the chassis 28 in the direction of movement of the magnetic head 46. Perform positioning. As a result, the magnetic head 4
6 passes through the center of the rotating magnetic sheet (the center of the drive shaft) and can move in the radial direction. In addition, the reference protrusion 88
The direction may be controlled by abutting the hend carriage rod 42. Also, the mounting plate 80 has three holes 90, 92, 9.
4 are formed, and the aforementioned receiver pins 58, 60, 62 are fitted into these three holes 90, 92, 94, and the chassis 28
are arranged at a predetermined distance from the mounting plate 80 (FIG. 9). That is, in FIG. 9, a pin 62 is shown, and the surface 63 of the pin 62 abuts against the bottom surface 95 of the hole 94 to regulate the height of the chassis 28. Other receivers are pin 58
．． 60 similarly contacts the mounting plate 80 to regulate the height.

Next, the magnetic head holding means 74 will be explained. The magnetic head holding means 74 includes an arm 96 formed in a substantially dogleg shape.
The arm 96 has a suction surface 98 at its tip.
is formed. An air suction hole 100 is formed in the center of the suction surface 98, and this air suction hole 100 communicates with a suction air passage 102 (FIG. 9). Therefore, when air is sucked from the passage 102, the head holder 45 is temporarily held on the suction surface 98. A rubber plate or the like may be adhered in advance to this suction surface 98 in order to prevent air leakage during suction. The magnetic head holding means 74 can be minutely moved in six directions by a hole direction moving means 76 which will be described later.

Next, the hole direction moving means 76 will be explained. First, base 1
04, a first sliding plate 106 that is movable in the Y direction (radial direction of the magnetic sheet) is slidably supported. This first sliding plate 106 is biased by a spring 108, and the first sliding plate 106 is rotated by rotating a screw 110.
The sliding plate 106 can be moved back and forth in the Y direction.

Further, on this first sliding plate 106, a second sliding plate 112 formed in an abbreviated shape is arranged in two directions (perpendicular to the magnetic sheet surface).
is slidably supported. This second sliding plate 112 is biased by a spring 114, and by rotating the second adjustment screw 116, the second sliding plate 112 is moved to Z.
It can be moved back and forth in the axial direction. Second sliding plate 11
A third sliding plate 118 is attached to the rising surface of 2 so as to be slidable in the X direction (direction perpendicular to the radial direction of the magnetic sheet). The third sliding plate 118 is biased by a spring 120, and can be reciprocated in the X direction by rotating the third adjustment screw 122. The third sliding plate 118 supports a first rotating plate 124 having a substantially oval shape so as to be rotatable in the 02 direction (azimuth angle direction) about a pin 126 . The first rotating plate 124 is urged to rotate around the shaft 126 by a spring 128, and is rotated in the θ2 direction by rotating the second adjustment screw 116. An abbreviated second rotating plate 134 is supported on the base plate of the first rotating plate 124 via a shaft 132 so as to be rotatable in the θY direction (tilt angle direction). The second rotating plate 134 is urged to rotate about the shaft 132 by a spring 136, and can be rotated in the θY direction by rotating the second adjustment screw 116. The base end of the arm 96 is connected to the second rotating plate 134 through the shaft 140.
It is mounted rotatably in the X direction (tilt angle direction). The arm 96 is urged to rotate around the shaft 140 by a spring 142, and can be rotated in the θX direction by a sixth adjustment screw 144. Therefore, the suction surface 98 formed at the tip of the arm 96 is connected to the first to sixth adjustment screws 110.11.
By rotating 6.122.130.138.144, it can be moved in six directions, that is, x, y, z, θX, θY, and θZ directions.

Next, the optical measuring means 78 will be explained. Measuring means 7
8 is composed of an optical microscope. The microscope includes a main body 148, an objective section 150, and an eyepiece section 151. A ribocill 152 of the objective section 150 is provided with a normal microscope lens 154, an interference microscope DI lens 156, and a mirror 158. By rotating the ribosil 152, the normal lens 154, DI lens 156, and mirror 158 can be placed in a position facing the magnetic head 46 held by the attraction surface 98 of the arm 96. The focusing positions of the microscope lens 154 and the DI lens 156 are set in advance to be at the height of the magnetic head 46. An image pickup tube (not shown) is provided in the eyepiece section 151,
It is possible to display and observe the magnetic head 46 on a monitor television or the like.

Furthermore, an ultraviolet irradiation device 79 is provided on the base 70. The ultraviolet rays emitted from the ultraviolet irradiation device 79 are reflected by a mirror 158 set in the direction of the magnetic head 46, and irradiate the area around the magnetic head 46 held by the arm 9G when the magnetic nod 46 is bonded. In this case, as shown in FIG. 10, in addition to the mirror 158 attached to the ribosil 152, a sub-mirror 160 is provided on the fixed side of the microscope, and the sub-mirror 160 irradiates the part that is not irradiated by the mirror 158. This allows the area around the magnetic head 46 to be irradiated without shadows. Sub mirror 1
The ultraviolet rays reflected by the magnetic head 60 pass through a through hole 162 formed in the arm 96 and irradiate the area around the magnetic head 460.

The procedure for adjusting the protrusion amount, inclination, center deviation, and tilt of the magnetic head using the magnetic head adjustment jig device configured as described above is as follows.

(11) First, the head block 45 to which the magnetic head 46 is attached is attracted and temporarily held by the suction surface 98 at the tip of the arm 96.

(2) Next, the DI lens 156 of the objective section 150 of the microscope is centered at the observation position by rotating the ribosil 152. In this state, by rotating the first, second, and third adjusting screws 110, 116, and 122 using an interference microscope, the magnetic head 46 is moved in the X, Y, and Z directions, and the head gear and the The magnetic head 46 is approximately positioned in the x, y, and Z directions by aligning it with the crosshair within the field of view of the interference microscope. (3) In FIG. 11, the field of view of the interference microscope is shown.
If the gap G of the magnetic head 46 deviates vertically from the center of the interference fringes, tilt adjustment is required, and if it deviates horizontally, tilt adjustment is required. i.e. 5th, 6th
By rotating the adjustment screws 138 and 144, the magnetic head 46 is rotated in the θX ((lJj) and θY (tilt) directions, and the head gap G is aligned with the center of the interference fringe as shown in FIG. Adjust the tilt and tilt of the head 46.

(4) Next, rotate the ribosil 152 again to set the normal microscope lens 154 to the observation position. A deviation from the horizontal cross line L1 within the field of view of the microscope shown in FIG. 12 indicates an azimuth shift, and a deviation of the head gap G from the vertical cross line L2 indicates a center shift. While looking at the microscope, turn the screw 122 to move the magnetic head 46 in the Y direction, and then move the magnetic head 46 in the Y direction.
By rotating the adjustment screw 130, the magnetic head 4
6 in the θZ direction, and by these operations, the head end surface 46A is aligned with the horizontal cross line L1.

(Alternatively, by rotating the first adjusting screw 110, the magnetic head 46 is moved in the X direction, and both end surfaces 4 of the head 46 are
6B and 46B to check the amount of deviation between the vertical cross line L2 and the head 46, and rotate the fourth adjustment screw 130 to adjust θ.
Adjust by moving in the Z direction. ) This allows coarse azimuth adjustment and center shift adjustment.

(5) Next, move the magnetic head 46 in the X direction and Y direction to align the center of the head gap G with the cross line in the field of view of the microscope, and operate the adjustment screw 116 to
6 in two directions to bring the magnetic head 46 into focus. Since the focus position of the microscope is set in advance at the protrusion amount position of the hemlock 46 and the depth of focus of the microscope is extremely shallow, the protrusion amount can be accurately adjusted by adjusting to the focus position.

(6) With the above steps, the adjustment of the magnetic henode 46 is completed, and an ultraviolet curable adhesive is applied to the bottom surface of the head block 45.

(7) In this state, insert the chassis 28 into the reference hole 86 and the pin hole 9.
The drive shaft 36 and pins 58, 69, 62 are inserted into the 0.92.94 holes to regulate the centering and height of the chassis 28, and the direction is regulated by aligning the reference protrusion 88 with the lead screw 40. 28 is attached to the mounting plate 80. At the time of this attachment, the head block 45 is bonded to an azimuth adjustment plate of the chassis 28, which will be described later.

(8) Next, rotate the revolver 152 to set the mirror 158 at a predetermined position.

(9) In this state, ultraviolet rays are irradiated from the ultraviolet irradiation device 79 to harden the adhesive.

01 Next, air suction is stopped and the chassis 28 is removed from the suction surface 98.

With the above operations, the amount of protrusion, inclination, and center deviation of the magnetic head can be adjusted.
Tilt adjustment is complete.

In the adjustment jig device described above, a case has been described in which the means for moving the magnetic head is a means for moving the magnetic head in the hole direction, but it is not necessarily necessary to provide a means for moving the magnetic head in the azimuth angle direction (θZ direction)'.

Adjustments other than the azimuth angle direction can be made by microscopic observation as described above, but this type of magnetic disk drive usually requires very high accuracy with an azimuth error of within ±6 minutes. , the final adjustment of the azimuth angle direction is difficult to perform within the microscope field of view. Therefore, an azimuth adjustment mechanism for the magnetic head is provided on the head carriage 42 of the chassis 28, and a standard sheet is attached so that the output of the reproduced signal is maximized while reproducing the reference signal recorded on the standard sheet. Accurate azimuth adjustment can be achieved by performing azimuth adjustment using an azimuth adjustment mechanism.

13 to 15 show a magnetic throat azimuth angle adjustment device according to the present invention, FIG. 13 is an exploded perspective view thereof, FIG. 14 is a plan view thereof, and FIG. 15 is a sectional view thereof. It is. The magnetic henodon 46 is fixed to the helad base 248,
Furthermore, this head base 248 is attached to the hend block 45. In other words, the cross-sectional shape of 7 Dobutsuroku 45 is L.
A head base 2 which is bent into a letter shape and has a magnetic head 46 attached to its rising piece.
48 is screwed with a screw 252.

The head block 45 configured in this manner has its bottom surface adjusted to the azimuth angle by the adhesive 254 (temporarily fixed to the hemlock carriage 42 by the screws 282) after adjusting the protrusion, steel, center deviation, and tilt as described above. It is fixed to the adjustment plate 256. The azimuth adjustment plate 256 has a rotation center hole 258 formed near one side edge, and a long hole 26 formed near the other side edge.
0, screw holes 262 and 262 are formed on both sides of the elongated hole 260. On the other hand, a pin 264 is also formed on the side of the hemlock cartridge 42 corresponding to the rotation center hole 258, and a round hole 266 is formed corresponding to the elongated hole 260.
Through holes 268 and 268 are formed on both sides of 66 in correspondence with the screw holes 262 and 262.

The azimuth adjustment plate 256 has a pin 2 in its rotation center hole 258.
64 allows rotation around the pin 264. Also, this rotation center hole 258 and pin 26
The position 4 is set to be located directly below the head gap G of the magnetic node 46. Therefore, when the azimuth adjustment plate 256 is rotated around the pin 264 in the hour hand direction or counterclockwise, the magnetic nodule 46 is rotated around the head cap G in the clockwise or counterclockwise direction.

A method for adjusting the azimuth deviation of a magnetic head using the azimuth angle adjustment device for a magnetic henode according to the present invention constructed as described above will be described.

An eccentric pin 270 serving as an adjustment jig is inserted into the round hole 266 and the elongated hole 260 from the lower surface of the head carriage 42 .

The eccentric pin 270 is composed of a large diameter portion 272 and a small diameter portion 274, the large diameter portion 272 is configured in a shape that can be inserted into the round hole 266, and the small diameter portion 274 is configured in a shape that can be inserted into the long hole 260. At the same time, the center of the large diameter portion 272 is offset from the center of the large diameter portion 272 . Therefore, the eccentric pin 270 configured in this manner is inserted into the round hole 266 from the lower surface of the head carriage, and its small diameter portion 274 is positioned within the elongated hole 260. When the eccentric pin 270 is rotated in this state, the azimuth adjustment plate 256 moves to the small diameter portion 27.
4, and as a result, the magnetic head 46 rotates around the head gap G. Such azimuth adjustment is performed by rotating the azimuth adjustment plate 276 using the eccentric pin 270 so that the output of the reproduced signal is maximized while reproducing the reference signal recorded on a standard sheet attached to the magnetic recording/reproducing device. and adjust the azimuth deviation.

In the embodiment described above, the eccentric pin 270 was provided to rotate the azimuth adjustment plate 256, but the azimuth adjustment plate 256
Other adjustment jigs can be used to rotate the.

For example, as shown in FIG. 16, a gear 276 is carved on one side edge of the azimuth adjustment plate 256, and the azimuth adjustment plate 256 is rotated by using an adjustment jig 280 equipped with a pinion 278 that meshes with the gear 276. azimuth deviation can be adjusted.

After adjustment, screw 282 from the bottom of the head carriage 42.
Insert the screws 282.282 into the through holes 268.268.
In some cases, the azimuth adjustment plate 256 is temporarily fixed in advance using the screw holes 262 and 282), and then screwed into the threaded holes 262 and 262. In this way, the azimuth deviation of the magnetic head can be adjusted with high precision.

To replace the magnetic head, the azimuth adjustment plate 256 is removed from the head carriage 42, a new azimuth adjustment plate is attached to the head carriage 42, and then the new azimuth adjustment plate is used to block the head using the magnetic head adjustment device according to this embodiment. This is done by installing the .

In other words, since the magnetic head is positioned at the same time as the hend block is adhesively fixed to the head carriage side, the attachment of the magnetic head to the head block is accurate and easy, regardless of the accuracy or the machining accuracy of the head block and azimuth adjustment plate. The magnetic head can be replaced.

〔Effect of the invention〕

As explained above, according to the magnetic helad adjustment device according to the present invention, a magnetic head whose protrusion amount, tilt center deviation, and tilt, which can be optically observed and adjusted, is attached to the azimuth adjustment plate, and the optical Since the azimuth angle, which is difficult to observe visually, can be adjusted while playing the standard sheet, it is possible to mount the magnetic head accurately, and since only the azimuth angle adjustment mechanism needs to be provided on the head carriage side, it is possible to adjust the azimuth angle while playing the standard sheet. can be made smaller.

[Brief explanation of the drawing]

Figure 1 is an explanatory diagram showing the protrusion amount and tilt angle of the magnetic head, Figure 2 is an explanatory diagram showing the center alignment and azimuth deviation of the magnetic head, Figure 3 is an explanatory diagram showing tilt, and Figure 4 is an explanatory diagram showing the magnetic sheet. 5 is a sectional view of the magnetic sheet puncture taken along line I-1 in FIG. 4; FIG. 6 is a perspective view of the magnetic disk device; FIG. 7 is a partial perspective view of the magnetic disk device; Fig. 8 is an overall perspective view of this embodiment, Figs. 9 and 10 are partial sectional views of this embodiment, Fig. 11 is an explanatory diagram showing the inside of the field of view of an interference microscope, and Fig. 12 is an ordinary microscope. FIG. 13 is an exploded perspective view of this embodiment, FIG. 14 is a plan view of this embodiment, FIG. 15 is a sectional view taken along line nn in FIG. 14, and FIG. The figure is a perspective view showing the structure of another embodiment according to the present invention. 18...if you care about the receipt 2
8...Chassis, 42...Head carriage,
46...Magnetic head, 70...Base, 72
...Mounting jig, 74...Magnetic head holding means,
76... Hole direction moving means, 78... Measuring means,
79... Ultraviolet irradiation device, 256... Azimuth adjustment plate, 258... Rotation center hole, 260... Long hole,
264...pin, 270...eccentric pin. Figure 1 n Figure 2 Figure 3 r Figure 4 Figure 5 Figure 6 Figure 9 Figure 10 Figure 12 Figure 13 Figure 14

Claims (3)

[Claims] (1) In a magnetic head adjustment device that is attached to a head carriage and moves in the radial direction of a rotating magnetic sheet to perform recording or reproduction on the magnetic sheet, it is installed upright on a base and supports the main body of a magnetic disk drive. a mounting jig comprising a mounting jig, a magnetic head holding means for temporarily holding the magnetic head until it is fixed to the magnetic disk drive main body side, and a mounting jig connected to the magnetic head holding means to attach the magnetic head held by the magnetic head holding means to the magnetic sheet. the radial direction (Y direction), the direction perpendicular to the radial direction of the magnetic sheet (X direction), the direction perpendicular to the magnetic sheet surface (Z direction), the tilt angle direction of the magnetic head (θX direction), and the tilt angle. An adjusting jig consisting of a moving means for moving the magnetic head in two angular directions (θY direction) and a measuring means for measuring the relative position of the magnetic head with respect to the main body of the magnetic disk drive. A magnetic head adjustment device comprising: an azimuth adjustment plate that is attached after adjusting center deviation and tilt, and is rotatably supported by a head carriage so as to rotate around the head gap of the magnetic head. . (2) Adjustment of the magnetic head according to claim 1, characterized in that the azimuth adjustment plate is formed with a long hole, and an eccentric pin is inserted into the long hole and rotated to adjust the azimuth deviation. Device. (3) A gear is engraved on the azimuth adjustment plate, and the azimuth adjustment plate is rotated by a pinion that meshes with the gear to adjust the azimuth deviation.
Adjustment device for the magnetic head.