JP3511889B2 - Recording / reproducing device for magnetic information - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention records (writes) magnetic information on a recording medium such as a film having a magnetic recording layer, or reproduces (reads) the recorded magnetic information.
Recording / reproducing apparatus.

[0002]

2. Description of the Related Art Generally, when a film having a magnetic recording layer is printed, the magnetic information recorded on the film is read and the printing process is performed based on the data.

As a reading device for reading magnetic information, as shown in FIG. 3, the film F is brought into contact with the magnetic head 23 by pressing a leaf spring 22 supported by a holder 21, and the film F is maintained while maintaining the contact state. Is known, and the magnetic information recorded on the film F is read by the magnetic head 23.

If the leaf spring 22 is made of a magnetic material, the magnetic information may be erased and the magnetic information may not be accurately read. Therefore, the leaf spring 22 is made of a non-magnetic material. Has been done.

[0005]

By the way, in the conventionally known reading device as described above, the leaf spring 22 made of a non-magnetic material is easily worn and damaged due to contact with the film F to be transferred. Each time it was worn or damaged, it had to be replaced, and there was a point to be improved in order to facilitate maintenance.

Further, since the holder 21 for holding the leaf spring 22 has dimensional variations in its manufacture, the contact pressure of the film F urged by the leaf spring 22 against the magnetic head 23 is not constant, There are still points to be improved in order to make the contact pressure of the film F uniform.

An object of the present invention is to make it possible to facilitate maintenance, and to appropriately bring a magnetic medium into contact with a magnetic head even when there are variations in dimensions in manufacturing the holder. It is to provide a recording / reproducing apparatus for magnetic information.

[0008]

In order to solve the above problems, according to the present invention, a magnetic medium is brought into contact with a magnetic head by a band-shaped elastic member supported by a holder to read or write magnetic information. In the magnetic information recording / reproducing apparatus described above, a pressing block is brought into contact with the back part of the elastic member, and biasing means for urging the pressing block toward the elastic member is provided, and the pressing block is brought into contact with the elastic member. elastic limit of the elastic member in a central portion of definitive to the surface
The structure that forms the relief part that allows the deformation in the field is adopted.

Further, in order to make the contact pressure of the magnetic medium with respect to the magnetic head uniform, the urging force of the urging means can be adjusted.

Here, a spring can be used as the urging means. By inserting this spring into the through hole formed in the holder and receiving the end of the spring with the adjusting screw screwed into the through hole, the pressing force of the spring can be adjusted by the rotation of the adjusting screw. it can.

As described above, it is possible to prevent the elastic member from being deformed beyond the limit of damage by providing the relief portion in the pressing block urged by the urging means. Therefore, as the elastic member, it is possible to employ an elastic member made of ceramics having a small elastic deformability and excellent wear resistance.

By adopting such an elastic member, the frequency of replacement due to wear or damage can be extremely reduced, and maintenance can be facilitated.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to FIGS.

As shown in FIG. 1, a magnetic head 1 for reading the magnetic information recorded on the film A is provided on the transfer path of the film A having a magnetic recording layer as a magnetic medium.

A holder unit 2 for contacting the film A with the magnetic head 1 is provided above the magnetic head 1. The holder unit 2 has a holder 3, and a storage recess 4 is formed in the holder 3. The storage recess 4 opens on the lower surface of the holder 3, and a pair of protrusions 5 are provided inward from both sides of the opening.

Slits 6 which are inclined inward with a downward slope are provided on the opposing surfaces of the pair of protrusions 5, and both ends of a band-shaped elastic member 7 are inserted into the slits 6.

The elastic member 7 is made of a ceramic such as zirconia and has an appropriate elastic force. This elastic member 7
By inserting the both ends of the elastic member 7 into the slit 6, the central portion of the elastic member 7 is bent downward to elastically contact the magnetic head 1.

A pressing block 8 is incorporated in the storage recess 4. The lowering amount of the pressing block 8 is limited by the contact between the pair of protrusions 9 and the pair of protrusions 5 provided on both sides thereof.

The pressing block 8 is urged downward by the urging means 10 so that its lower surface comes into contact with the elastic member 7, and the contact surface is provided with a relief portion 11 for limiting elastic deformation of the elastic member 7. .

The biasing means 10 comprises a spring 12.
The spring 12 is inserted from the upper surface of the holder 3 into a through hole 13 penetrating the storage recess 4, and the upper end thereof is received by an adjusting screw 14 screwed into the upper portion of the inner circumference of the through hole 13. Therefore, by rotating the adjusting screw 14, the elastic force of the spring 12 is adjusted, and the contact pressure of the elastic member 7 with respect to the magnetic head 1 can be adjusted.

In the recording / reproducing apparatus having the above structure, the magnetic medium A is inserted between the magnetic head 1 and the elastic member 7, and the elastic force of the elastic member 7 elastically contacts the magnetic medium A with the magnetic head 1. Then, the information is read or written.

When the tension of the magnetic medium A changes during the recording or reproducing of the information as described above, the elastic member 7 is elastically deformed. At this time, the elastic member 7 is elastically deformed within the range of the relief portion 11 formed in the pressing block 8, so that the elastic member 7 is prevented from being deformed beyond the limit of damage.
Therefore, the elastic member 7 is less likely to be damaged, and since the elastic member 7 is made of ceramic, it has excellent wear resistance, and the frequency of replacement of the elastic member 7 due to wear and damage is extremely low, facilitating maintenance. be able to.

The contact pressure of the magnetic medium A with respect to the magnetic head 1 is preferably constant. Since the contact pressure varies depending on the dimensional variation when the holder 3 is manufactured,
When recording / reproducing information, adjust the contact pressure. When adjusting the contact pressure, the adjusting screw 14 is rotated to adjust the elasticity of the spring 12 to absorb the dimensional variation.

[0024]

As described above, in the present invention, the pressing block provided on the back of the elastic member is biased toward the elastic member, and the relief portion is provided on the contact surface of the pressing block with the elastic member. As a result, it is possible to prevent the elastic member from being deformed beyond the limit of damage.

Therefore, as the elastic member, it is possible to use a material made of ceramic having excellent wear resistance,
The frequency of replacement of the elastic member due to wear or damage can be extremely reduced, and maintenance can be facilitated.

Further, by making it possible to adjust the urging force of the urging means for urging the pressing block toward the elastic member,
It is possible to absorb the dimensional variation at the time of manufacturing the holder for holding the elastic member by adjusting the urging force of the urging means,
The magnetic medium can always be brought into contact with the magnetic head with an appropriate contact force.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view showing an embodiment of the present invention.

FIG. 2 is a perspective view showing a holder unit of the above.

FIG. 3 is a front view showing a conventional magnetic information reader.

[Explanation of symbols]

1 magnetic head 3 holder 7 Elastic member 8 Presser block 10 Biasing means 11 relief section 12 springs 13 through holes 14 Adjustment screw

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Claims (2)

(57) [Claims] 1. A magnetic information recording / reproducing apparatus in which a magnetic medium is brought into contact with a magnetic head by a band-shaped elastic member supported by a holder to read or write magnetic information, and the magnetic information recording / reproducing device is pressed onto the back of the elastic member. contacting the block, biasing means for biasing the retainer block to the elastic member side is provided, allowing deformation within the elastic limit of the elastic member in a central portion of definitive the contact surface between the elastic member of the pressing block A magnetic information recording / reproducing device having a relief portion. 2. The magnetic information recording / reproducing apparatus according to claim 1, wherein the biasing force of the biasing means is adjustable.