JPS60177423A - Magnetic head controller - Google Patents

Abstract

PURPOSE:To control easily both center and azimuth shifts by controlling the position of a magnetic head via the 1st plate which can be controlled rectangularly to the shift direction of a carriage and the 2nd plate attached rotatably to the 1st plate. CONSTITUTION:A plate 48 for control of center shift and protrusion is attached to a head carriage 42 by screws 62 and 64 inserted to long grooves 54 and 55. While a plate 50 for azimuth control is attached rotatably under the carriage 42 via a pin 76. A magnetic head 46 is attached to the plate 50 via a movement control plate. In such a constitution, a center shift is controlled by revolving a pinion 71 engaging a rack on the side face of the plate 48 after unfastening screws 62 and 64. While the azimuth is controlled by inserting a prescribed tool to V-shaped grooves 59 and 78 and revolving the plate 50. This attains easy control for both center and azimuth shifts of the head 46.

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.

[Prior art]

Recently, imaging devices such as solid-state image sensors and image pickup tubes have been combined with recording devices that use magnetic disks, which are inexpensive and have a relatively large storage capacity, to take purely electronic still photographs of subjects. An electronic still camera system has been developed that records images on a sheet and reproduces the images using a separate television system or printer.

By the way, this type of magnetic sheet used in electronic cameras and the like differs from magnetic sheets used in general magnetic recording/reproducing devices in that still image information and the like are recorded at high density, and it rotates at high speed. Therefore, the magnetic head that contacts the magnetic sheet and performs recording or reproduction on the magnetic sheet must be accurately adjusted in position -U with respect to the magnetic sheet.

Due to these circumstances, the magnetic head used in Shigeko cameras and the like for recording or reproducing still image information, etc. has a large amount of protrusion with respect to the magnetic sheet, (spray angle, ■Five adjustments to tilt are required. Among these, ■Tilt angle and ■Tilt can be dealt with only by head aging, if they are minute.The following These five adjustments will be explained in sequence according to FIGS. 1 to 3.

In FIG. 1, 10 is a magnetic sheet, 12 is a magnetic head that performs recording or reproduction on this magnetic sheet, and 14 is provided at a position facing the magnetic head 12 with the magnetic sheet 10 in between, and the magnetic sheet 10 is magnetically This is a regulating plate that is placed along the navel F' 12. To magnetism・Grot 12 has magnetic sea 1-
10, a protrusion amount Ea within a predetermined range is required, and precise adjustment is required in order to perform better recording and reproduction and prevent wear of the magnetic head and recording medium.

In addition, in order to obtain a good reproduced image even when the same recording medium is loaded into different playback machines, it is also possible to set the playback head at the recording heel 1°, as in the case where the recorder and the playback machine are configured separately. When using separate ones, the inclination angle θa as shown in FIG. 1, the deviation 1iEb and azimuth deviation θb of the magnetic head 12 with respect to the center of the magnetic sheet 10 shown in FIG. 2, and furthermore, as shown in FIG. The tilt angle θC of the magnetic head with respect to the magnetic sheet 10 must be within a predetermined compatible range.

[Purpose of the invention]

The present invention has been made in consideration of these circumstances, and has been developed to provide a magnetic head that can easily adjust center deviation and azimuth deviation. The purpose is to make IT equipment a slave device.

[Structure of the invention]

In order to achieve the above-mentioned object, the present invention has a magnetic head which is supported on a hend carriage so as to be slidable in a direction perpendicular to the direction of movement of the hend carriage and is provided with means for adjusting the movement of a magnetic head in a direction perpendicular to the direction of movement of the hend carriage. The second plate is rotatably supported by the first plate, is provided with a magnetic head, and is provided with means for adjusting the rotation relative to the first plate. The first adjustment jig moves the first plate in a direction perpendicular to the direction of movement of the hexagon 1' carriage to adjust the center deviation, and the second adjustment jig moves the second plate to the first plate. The feature is that the azimuth deviation can be adjusted by rotating the

〔Example〕

Hereinafter, a preferred embodiment of the magnetic head opening device according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 4 shows a plan view of a magnetic sheet pack used in a magnetic recording or reproducing device such as an electronic camera, and FIG. 5 is a W1 view taken along line V-V in FIG. 4. As shown in FIG. 4, a magnetic sheet pack 16 has a substantially rectangular shape, and a magnetic sheet 1 in which still image information, etc. is recorded.
8 is rotatably stored. A center core 20 as a reinforcing portion is provided in the center of the magnetic sheet 18, and the center core 20 is exposed to the outside through a circular opening 22 of the magnetic sheet bank 16. is supported by. A window 24 in which a magnetic head, which will be described later, is located is opened in the magnetic sheet bank 16, and this window 24 for the magnetic head is opened and closed by a slideable shutter 26.

Immediately, the shutter 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 and opens the head window gIS 2.
4 is opened, and recording/reproduction to the magnetic sheet L-18 becomes possible.

FIG. 6 shows a magnetic recording or reproducing device, which includes a main body 28 and a magnetic sheet pack 16.
It is composed of an inner bucket 30 into which the bucket is inserted, and an upper lid 32. First, the device body 2.

To explain the internal structure of the magnetic sheet pack 8, a motor 34 for driving a magnetic sheet is disposed in the device main body 2B, and when the upper i32 is closed, the drive shaft 3G of this motor 34 is connected to the magnetic sheet pack 16 shown in FIG. It is inserted into the center hole 21 of the center core 20, and the magnetic seats 1 to 1B are rotated at a predetermined number of rotations within the magnetic seat back 1G. Further, in FIG. 6, 38 is a feeding motor for the magnetic head, 40 is connected to the output shaft of this motor 38, and 42 is screwed into this lead screw 40 and guided by a guide shaft 44. The head carriage 46, which is moved ζ, is a magnetic nod provided on the head carriage 42.

Therefore, when the motor 38 is rotated at a predetermined number of rotations,
\The magnetic head 46 is moved in the axial direction of the guide shaft 44 every predetermined pinch by the rotation of the lead screw 40, and therefore the magnetic head 46 is moved by the magnetic seat 1-18.
magnetic sheet 18.
Still image information can be recorded or played back for each trunk.

7 to 10 show the mounting structure of the magnetic head 46, FIG. 7 is an exploded perspective view thereof, FIG. 8 is a plan view thereof,
Figure 9 is a side view taken along line IX-IX on Figure 8;
FIG. 0 is a sectional view taken along the line x--x in FIG. 8. Attached to the lower surface of the head gear ridge 42 are a centering and protrusion adjustment plate 48, an azimuth adjustment plate 50, and a tilt adjustment plate 52 shown in FIG. First, to explain the structure of the center deviation and protrusion adjustment plays 1 to 48, long grooves 54 and 55 are formed at both ends in a direction perpendicular to the moving direction of the head carriage 42, and furthermore, there are grooves 54 and 55 that are mounted on the line connecting the long grooves 54 and 55. A circular hole 56 for azimuth adjustment, a semicircular hole 58 for azimuth adjustment, and a V groove 59 opening into the semicircular hole 58 are formed. Furthermore, a rank 60 is carved on one side edge of the centering and protrusion adjusting plate 48 in a direction perpendicular to the moving direction of the head carriage 42. The center deviation and protrusion adjustment plate 48 is attached to the lower surface of the head carriage 42 with screws 62 and 64. That is, the screw 62 is inserted into the long groove 54 and screwed into the screw hole 66 formed in the head carriage 42, and the other screw 64 is inserted into the long groove 55 and then inserted into the screw hole 66 of the head carriage 42 via the disc spring 68. It is screwed into 69. To adjust the center deviation, insert the adjustment jig 70 equipped with a pinion 71 into the hole 72 of the head carriage 42, engage the pinion 71 with the rank 60, and rotate the adjustment jig jL7Q to adjust the center deviation. It also stands out! The J alignment pre-alignment play 1 is performed every time the head carriage 42 is moved in a direction perpendicular to the moving direction. In addition, as will be described later, the protruding jllj straightening screw 6
The plate 48 is tilted through the screw-in opening 4 to adjust the amount of protrusion.

Next, the structure of the azimuth adjustment plate 50 will be explained. The plate 50 is arranged on the lower surface of the plate 4B, a circular hole 74 corresponding to the circular hole 56 of the plate 48 is formed in the plate 50, and the bottle 7G is inserted into the circular hole 74 and the circular hole 56 of the plate 48. , whereby the plate 5o is rotatably supported relative to the plate 48.

Note that 77 is a pull-out prevention ring provided at the tip of the bottle 76. Further, the tip of the bottle 76 is loosely fitted into a long hole 42'a formed in the hemlock holder 42, and the long hole 42a is formed in a direction perpendicular to the moving direction of the head carriage 42. plate 50
is placed on the lower surface of the plate 48, a V groove 78 is formed in the plate 48 at a position corresponding to the semicircular hole 58 for azimuth adjustment. Approximately rectangular openings are formed facing each other.

To adjust the azimuth deviation, as will be described later, with the plate 50 rotatably resting on the lower surface of the play 1-48, insert the tip 83 of the adjustment jig 82 into the groove 59.7B from below. This is done by rotating the adjustment jig 82.

Furthermore, a screw hole 84 is formed in the plate 50.

The orientation adjustment plate 52 is bent into an abbreviated shape, and the lower surface 52a thereof is provided with an orientation adjustment screw hole 86 and a circular hole-shaped hole 8B for ``J''&:l.

The lower surface 52a of the plate 52 is attached to the lower surface of the plate 50 by inserting a screw 92 into a circular hole 88 through a plate spring 90 bent into a substantially trapezoidal shape, and then screwing it into a screw hole 84 of the plate 50. I get kicked. face, 85
is an escape hole for screw 92. Lower surface 52a of plate 52
The arm 93.93 formed in the shoulder portions 93a, 93a
are formed, and these shoulder portions 93a, 93a are attached with the side edge portions 5 of the plate 50 in contact with each other. The tilt adjustment is performed by screwing the adjustment screw 94 into the screw hole 86 to tilt the plate 52 as described later. Plate 5
A head plate 96 equipped with a magnetic throat 46 is attached to the side surface 52b of the second head with screws 98.

A method for adjusting a magnetic head using the embodiment of the present invention configured as described above will be described.

First, to adjust the amount of protrusion of the magnetic head 46, as shown in FIG. When the screw 64 is loosened, the plate 48 is rotated clockwise by the biasing force of the disc spring 68. This causes the magnetic head 46 to move up and down,
Adjust the protrusion amount.

Next, the tilt adjustment of the magnetic head 4G will be explained with reference to FIG.
When screwed into the screw hole 86 against the biasing force of the leaf spring 90 while the plate 50 is in contact with the back surface of the plate 50, the plate 50 is screwed into the screw hole 86.
2 rotates counterclockwise around a contact portion 99 between the side edge portion 51 and the shoulder portion 93a. Conversely, when the adjusting screw 94 is loosened, the plate 52 rotates clockwise around the contact portion 99 due to the (-J force of the leaf spring 90. This causes the magnetic head 46, which is held in the plate 52, to rotate clockwise. Adjustments can be made.

Next, azimuth shift adjustment will be explained with reference to FIG. 8. Azimuth shift adjustment is performed using the flat tip 83 of the adjustment jig 82.
is inserted into the V groove 59 and the ■groove 78 which face each other, and when the adjustment jig 82 is rotated within the semicircular hole 58, the plate 50 and the plate 4 together with the plate 52 equipped with the magnetic head 46 are rotated.
It rotates around pin 76 with respect to 8. As a result, the magnetic head 46 rotates through the pin 76 in the rt-c direction, so that the azimuth shift can be adjusted.

Next, centering adjustment will be explained with reference to FIG. 71 is engaged with the rack 60, and in this state, the adjustment jig 70 is rotated. The plate 48 is guided by the screw 62.64 located in ctJ54.55 by the rank and pinion mechanism to the magnetic heel 42.
It is possible to adjust the center deviation by moving in a direction perpendicular to the direction of movement. In adjusting the center deviation, the plate 48 is guided by the screws 62 and 64, but the guide is not limited to this, for example, the head carriage 42
A reference surface 100 is formed on the side, and a side edge 102 of the plate 48 is formed on the side.
The plate 48 may be moved by being guided by this reference surface 100.

In the embodiment described above, a plate 48 is provided on the head carriage 42 so as to be slidable in a direction perpendicular to the moving direction of the head carriage 42, a plate 50 is rotatably attached to the lower surface of the plate 48, and the center shift adjustment is performed using the plate 48. 48 is moved relative to the head carriage 42 in a direction perpendicular to the moving direction of the 'ζ hand carriage 42, and the azimuth shift adjustment is performed by rotating the plate 50 around the pin 70. In this way, there is an advantage that center shift adjustment and azimuth shift adjustment can be performed independently without affecting each other.

In the embodiment of the present invention, the tilt, protrusion amount, center shift, and azimuth shift of the magnetic head 46 are adjusted using an optical reading device such as a projector or a microscope.

Further, according to this embodiment, since all adjustments of the magnetic head can be made from below the head carriage, there is an advantage that the optimum position of the magnetic head can be adjusted with high precision while performing standard sea playback.

〔Effect of the invention〕

As explained above, according to the magnetic head adjusting device according to the present invention, the first plate is supported on the head carriage so as to be slidable in a direction perpendicular to the moving direction of the head carriage, and the first plate 1 is A second play with a magnetic head (
- is supported rotatably, the first plate is moved in a direction perpendicular to the moving direction of the head carriage using the first adjustment jig to adjust the center deviation, and the second 1IIIiI adjustment jig is used to adjust the center deviation. The azimuth shift can be adjusted by rotating the second plate.

[Brief explanation of the drawing]

Figure 1 is an explanatory diagram showing the protrusion amount and spread angle of the magnetic head, Figure 2 is an explanatory diagram showing the center deviation 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 head. A plan view of the sheet bank, FIG. 5 is a sectional view of the magnetic sheet puncture taken along the line ■-■ in FIG. 4, FIG. 6 is a perspective view of the magnetic recording or reproducing device, and FIG. 7 is an exploded view of this embodiment. A perspective view, FIG. 8 is a plan view of this embodiment, and FIG. 9 is an IX-I on FIG.
FIG. 10 is a side view taken along the X-line, and FIG. 10 is a sectional view taken along the X--X line in FIG. 42...Head carriage, 4G...Magnetic head,
48... Center deviation and protrusion adjustment plate, 5
0... Brate for adjusting the azimuth, 52... Tilt δI! DU Month J Shire 1・, 54.55... Long groove for center deviation δ circumference, 59... V groove for adjusting azimuth deviation, 60... Rank, 68... Belleville spring, 70...
Center deviation adjustment jig, 71... pinion, 74...
Circular hole, 76...Pin, 78...Embedded with V'a0 for azimuth deviation adjustment Patent attorney Kenzo Matsuura Fig. 1 Q Fig. 2 Fig. 4 Fig. 6 Fig. 5 (-0 to ()) Fig. 8 Figure 4゜Figure 9Figure 1Q

Claims (1)

[Claims] (11) 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 supported by the hend carriage so that it can freely slide in a direction perpendicular to the direction of movement of the hend carriage. and a means for moving and adjusting the magnetic head in a direction perpendicular to the moving direction of the hend carriage.
rotatably supported by the plate and the first plate,
A second plate is provided with a magnetic head and is provided with a means for rotationally adjusting the first plate. A magnetic head characterized in that the center shift is adjusted by moving the second plate in a direction perpendicular to the direction, and the azimuth shift is adjusted by rotating the second plate with respect to the first plate using a second adjustment jig. Adjustment device.