JPH11328636A - Magnetic recording/reproducing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a magnetic recording/reproducing apparatus which has a head cleaner that can produce a sufficient cleaning action without the fear of damaging the circumferential face of a rotary drum, etc. SOLUTION: This magnetic recording/reproducing apparatus has a rotary drum 2 with a magnetic head 1, a fixed drum 3 for supporting the rotary drum 2 and a head cleaner 4 for cleaning a tape slide face of the magnetic head 1. The head cleaner 4 is constituted of one or more rotary rollers 5. At least one rotary roller 5 is provided with a plurality of rotatable soft members 8, 9 coaxially arranged and independently in touch with circumferential faces of the rotary drum 2 and the fixed drum 3. The soft members 8, 9 rotated by the rotary drum 2 have abrasive properties, contain a lubricant incorporated therein or have both abrasive properties and a lubricant incorporated therein.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic recording / reproducing apparatus, and more particularly to a structure of a head cleaner for cleaning a tape sliding surface of a magnetic head of a rotary drum.

[0002]

2. Description of the Related Art A video tape recorder (VTR), a digital audio tape (DAT), and a digital data storage (DDS) each having a rotary magnetic head are provided.
In a magnetic recording / reproducing apparatus such as the above, if foreign matter adheres to the tape sliding surface of the magnetic head, a spacing loss occurs and the recording / reproducing ability of the magnetic head is reduced.
Since the reliability of the tape is also reduced, it is necessary to clean the magnetic head to remove extraneous matter from the tape sliding surface. The foreign matter adhering to the magnetic head includes not only dust and dirt, but also a magnetic powder and a binder of the tape cut off by the magnetic head and the rotating drum, and a cutting powder of the tape traveling system member.

Therefore, generally, a magnetic head during tape loading is cleaned with a head cleaner.
There is a magnetic recording / reproducing apparatus using a rotating roller 101 as shown in FIG. That is, reference numeral 102 in FIG.
Is a magnetic head, 104 is a rotating drum, 105 is a fixed drum, and has a single rotatable soft member 106 made of a cylindrical sponge or the like, and a rotating roller 101 installed on a support member 107 is fixed. It is disposed at a position facing the peripheral surface of the rotating drum 104 that rotates in the X direction while being supported by the drum 105, and moves along the Y direction, and then moves along the peripheral direction of the rotating drum 104 and the fixed drum 105. Is to come in contact with.

In this case, the rotating roller 101
The soft member 106 included in the magnetic head 103 may be used after cleaning the tape sliding surface of the magnetic head 103 with a simple sponge or the like, or after being impregnated with abrasive particles such as alumina (for example, Japanese Patent Laid-Open No. 5-
258252). In FIG. 13, reference numeral 108 denotes a rotating post, and 109 denotes an inclined post. These posts 108 and 109 ensure smooth running of the magnetic tape 102 accompanying rotation of the rotating drum 104.

[0005]

However, in the conventional magnetic recording / reproducing apparatus, the following inconvenience has occurred. That is, if the tape sliding surface of the magnetic head 103 is cleaned after using the soft member 106 made of sponge or the like, it is difficult to obtain a sufficient cleaning action, and only a cleaning action that is insufficient for practical use is obtained. It will not be.

When the soft member 106 is impregnated with the abrasive particles, the outer peripheral surface of the soft member 106 which is punched after the impregnation with the abrasive particles, that is, each of the rotating drum 104 and the fixed drum 105 In some cases, the center portion of the outer peripheral surface that comes into contact with the peripheral surface has a concave shape than the end portion thereof.
6, the peripheral surfaces of the rotating drum 104 and the fixed drum 105 may be damaged, or the tape sliding surface of the magnetic head 103 may not be cleaned.

The present invention has been made in view of such inconvenience, and comprises a head cleaner capable of obtaining a practically sufficient cleaning action without fear of damaging the peripheral surface of a rotating drum or the like. It is intended to provide a magnetic recording / reproducing device.

[0008]

A magnetic recording / reproducing apparatus according to the present invention comprises a rotating drum having a magnetic head, a fixed drum for supporting the rotating drum, and a head cleaner for cleaning a tape sliding surface of the magnetic head. In order to achieve the above object, the head cleaner is composed of a single or a plurality of rotating rollers, at least a single rotating roller is coaxially arranged, and a rotating drum and The fixed drum is provided with a plurality of rotatable soft members that come into contact with the peripheral surface of each of the fixed drums independently, and the soft member that is rotated by the rotating drum has abrasiveness, or is impregnated with a lubricant. Or a material impregnated with a lubricant while having an abrasive property.

That is, a magnetic recording / reproducing apparatus according to a first aspect includes a rotating drum having a magnetic head, a fixed drum supporting the rotating drum, and a head cleaner for cleaning a tape sliding surface of the magnetic head. The head cleaner is composed of a single rotating roller, and the rotating roller is coaxially arranged, and a plurality of rotatable rollers that independently contact the peripheral surfaces of the rotating drum and the fixed drum, respectively. And a soft member that can be rotated by the rotating drum has abrasiveness.

The head cleaner of the magnetic recording / reproducing apparatus according to the second aspect is constituted by a single rotating roller.
The rotating roller is provided with a plurality of rotatable soft members that are coaxially arranged and independently contact the peripheral surfaces of the rotating drum and the fixed drum, and the soft member that can be rotated by the rotating drum is It is characterized by being impregnated with a lubricant.

According to a third aspect of the present invention, the head cleaner of the magnetic recording and reproducing apparatus comprises a single rotating roller.
The rotating roller is provided with a plurality of rotatable soft members that are coaxially arranged and independently contact the peripheral surfaces of the rotating drum and the fixed drum, and the soft member that can be rotated by the rotating drum is It has abrasiveness and is impregnated with a lubricant.

According to a fourth aspect of the present invention, a head cleaner of the magnetic recording and reproducing apparatus comprises a plurality of rotating rollers.
The single rotating roller is provided with a plurality of rotatable soft members which are coaxially arranged and come into contact with the respective peripheral surfaces of the rotating drum and the fixed drum independently. The member has abrasiveness, while the other rotating roller is provided with a single rotatable soft member that is rotated while being in contact with the peripheral surfaces of both the rotating drum and the fixed drum. I do.

According to a fifth aspect of the present invention, the head cleaner of the magnetic recording and reproducing apparatus comprises a plurality of rotating rollers.
Each of these rotating rollers is provided with a plurality of rotatable soft members which are coaxially arranged and independently contact the respective peripheral surfaces of the rotating drum and the fixed drum. Each member is characterized by having polishing properties.

According to a sixth aspect of the present invention, the head cleaner of the magnetic recording and reproducing apparatus comprises a plurality of rotating rollers.
The single rotating roller is provided with a plurality of rotatable soft members which are coaxially arranged and come into contact with the respective peripheral surfaces of the rotating drum and the fixed drum independently. The member has abrasiveness, while the other rotating roller is provided with a plurality of rotatable soft members which are coaxially arranged and come into independent contact with the respective peripheral surfaces of the rotating drum and the fixed drum. In addition, the soft member rotated by the rotating drum is characterized by being impregnated with a lubricant.

According to a seventh aspect of the present invention, the head cleaner of the magnetic recording and reproducing apparatus comprises a plurality of rotating rollers.
The single rotating roller is provided with a plurality of rotatable soft members which are coaxially arranged and come into contact with the respective peripheral surfaces of the rotating drum and the fixed drum independently. The member has abrasiveness, while the other rotating roller is provided with a plurality of rotatable soft members which are coaxially arranged and come into independent contact with the respective peripheral surfaces of the rotating drum and the fixed drum. In addition, the soft member which is rotated by the rotating drum is characterized in that it has abrasiveness and is impregnated with a lubricant.

The head cleaner of the magnetic recording / reproducing apparatus according to claim 8 comprises a plurality of rotating rollers.
The single rotating roller is provided with a plurality of rotatable soft members which are coaxially arranged and come into contact with the respective peripheral surfaces of the rotating drum and the fixed drum independently. While the member is impregnated with a lubricant, the other rotating roller is provided with a plurality of rotatable soft members which are coaxially arranged and independently contact the respective peripheral surfaces of the rotating drum and the fixed drum. The soft member rotated by the rotating drum has abrasiveness and is impregnated with a lubricant.

The head cleaner of the magnetic recording / reproducing apparatus according to the ninth aspect comprises a plurality of rotating rollers.
Each of these rotating rollers is provided with a plurality of rotatable soft members which are coaxially arranged and independently contact the respective peripheral surfaces of the rotating drum and the fixed drum. Each member is characterized by being impregnated with a lubricant.

The head cleaner of the magnetic recording / reproducing apparatus according to the tenth aspect comprises a plurality of rotating rollers, each of which is coaxially arranged and independently of the peripheral surfaces of the rotating drum and the fixed drum. A plurality of rotatable soft members that come into contact with each other, and each of the soft members that can be rotated by the rotating drum has abrasiveness and is impregnated with a lubricant. And

A magnetic recording / reproducing apparatus according to claim 11 is
A lubricant according to any one of claims 2, 3 and 6 to 10, wherein the lubricant impregnated in the soft member is perfluoropolyether. A magnetic recording / reproducing apparatus according to a twelfth aspect of the present invention is the magnetic recording / reproducing apparatus according to any one of the fourth to tenth aspects, wherein only a single rotating roller out of a plurality is brought closer to the rotating drum and the fixed drum. Further, there is provided a selecting means for bringing a soft member provided in the approaching rotating roller into contact with a peripheral surface of each of the rotating drum and the fixed drum.

[0020]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) FIG. 1 is a side view schematically showing only a main part of a magnetic recording / reproducing apparatus according to Embodiment 1, and FIG. 2 shows a configuration of a head cleaner according to Embodiment 1. FIG. 3 is a side view schematically showing only a main part of a magnetic recording and reproducing apparatus according to a modification, and FIG. 4 is a perspective view showing a configuration of a head cleaner according to the modification. Since the overall configuration of the magnetic recording / reproducing apparatus is basically not different from the conventional embodiment, the illustration and detailed description are omitted here.

As shown in FIG. 1, the magnetic recording / reproducing apparatus according to the first embodiment includes a rotating drum 2 having a magnetic head 1, a fixed drum 3 rotatably supporting the rotating drum 2, a magnetic drum 1 And a head cleaner 4 for cleaning the tape sliding surface. The magnetic tape (not shown) is run with the rotation of the rotary drum 2 in the X direction. The head cleaner 4 here is composed of a single rotating roller 5 as shown in FIG. 2, and this rotating roller 5 is made of a plastic or the like rotating standing on a swingable support member 6. It has two rotatable soft members 8 and 9 which are coaxially arranged with respect to the central axis 7 and which come into contact with the peripheral surfaces of the rotating drum 2 and the fixed drum 3 independently. The rotating roller 5 is disposed at a position facing the peripheral surface of the rotating drum 2, and moves along the Y direction before approaching the respective peripheral surfaces of the rotating drum 2 and the fixed drum 3, or Are supposed to be separated.

The soft members 8 and 9 at this time are both cylindrical, and the soft member 8 that comes into contact with the peripheral surface of the rotary drum 2 is manufactured using a nonwoven fabric of polyester fiber. A material impregnated with an abrasive (abrasive particles) such as an alumina-based material, that is, one having an abrasive property. On the other hand, the soft member 9 coaxially arranged with the soft member 8 with the rotation center shaft 7 is manufactured using a wool nonwoven fabric or the like, and is not impregnated with an abrasive.
The independent soft member 8 placed on the upper position of the soft member 9 is configured to be able to freely rotate while being in contact with the soft member 9 by its own weight.

The material of each of the soft members 8 and 9 is not limited to the above, and can be arbitrarily selected. However, when a nonwoven fabric of polyester fiber is used as the material of the soft member 8, polishing is performed. The material is easily impregnated.
Furthermore, if the soft member 8 is obtained by impregnating a nonwoven fabric of polyester fiber with an abrasive, the punching workability is improved, and as a result, the outer peripheral surface of the soft member 8, that is, The advantage that dents are unlikely to occur on the contacting outer peripheral surface is also ensured.

Therefore, the head cleaner 4 according to the present embodiment operates in the state as shown in FIG. 1, and the soft member 8 disposed above the rotating roller 5 is a rotating member having the magnetic head 1. While being in contact with the peripheral surface of the drum 2, the soft member 9 disposed at a lower position thereof comes into contact with the peripheral surface of the fixed drum 3. The soft member 8 in contact with the peripheral surface of the rotating drum 2 is rotated by the rotating drum 2 rotating along the X direction, and the soft member 9 to which the weight of the soft member 8 is applied becomes independent. In spite of this, the rotation of the soft member 8 starts in contact with the peripheral surface of the fixed drum 3 with the rotation of the soft member 8.

However, since the contact with the fixed drum 3 acts as a factor that hinders the rotation of the soft member 9, the soft member 9 hardly rotates, and depending on the fact that the soft member 9 hardly rotates. Even the rotation of the soft member 8 is weakened. Therefore, the rotation speed of the soft member 8 is lower than that in the case where only the soft member 8 alone is in contact with the peripheral surface of the rotary drum 2, and the rotation speed of the soft member 8 is lower than the rotation speed of the rotary drum 2. As a result,
The number of times of contact and the contact force between the magnetic head 1 provided on the rotating drum 2 and the soft member 8 increase. The rotation speed of the soft member 8 is determined by the respective materials of the soft members 8 and 9, and the rotation speed of the soft member 8 can be adjusted by changing the combination of the materials.

When the number of times of contact between the magnetic head 1 and the soft member 8 is increased and the contact force is increased, the cleaning action of the soft member 8 on the tape sliding surface of the magnetic head 1 is improved, and a practically sufficient cleaning is performed. The effect will be obtained. Although not shown, the soft member 8,
If the margin in the axial direction of each of the members 9 is increased, these soft members 8 and 9 can move in the vertical direction to some extent, so that the cleaning action can be further improved.

Next, a method of manufacturing the abrasive in the first embodiment will be described. First of all, abrasive and binder,
A polishing agent impregnating liquid obtained by dispersing a dispersant, a curing agent, and the like in a solvent, if necessary, is prepared according to the following procedure. That is, as the polishing material at this time, α-alumina, γ-alumina, titanium oxide, red iron oxide, chromium oxide, silicon carbide, cerium oxide, titanium carbide, boron carbide, silicon oxide, boron nitride and other inorganic high hardness fine particles and One or a combination of two or more of plastic fine powder and diamond fine powder is prepared.

As the binder, fibrous resins such as nitrocellulose and cellulose acetylbutyrate, vinyl chloride vinyl acetate copolymer resin, vinylidene chloride resin, polyurethane resin, polyamide resin, urea resin, epoxy resin, Polyester resin, epoxy resin, fluororesin, acrylonitrile resin, phenol resin, etc., or a combination of two or more selected from derivatives of these resins in consideration of dispersibility and coating film durability Is prepared. As the dispersant, higher fatty acids, higher fatty acid metal salts, higher fatty acid amides, higher alcohols, phosphate esters, glycerin, silane coupling agents, titanium coupling agents, aluminum coupling agents, and the like are prepared. Is added.

Furthermore, a polyfunctional low molecular isocyanate, a low molecular polyamide or the like is used as a curing agent when using thermal curing, and a polyfunctional low molecular isomer when using electron beam curing or radiation curing. Polyepoxy or the like is prepared.
In order to improve the reactivity, a cross-linking accelerator or a cross-linking inhibitor such as an organotin compound, an acidic catalyst, or an alkaline catalyst may be added. Further, as the solvent, organic solvents such as methyl ethyl ketone, methyl isobutyl ketone, toluene, benzene, xylene, cyclohexanone, ethyl acetate, butyl acetate, tetrahydrofuran, dimethylformamide, ethyl alcohol, isopropyl alcohol, ethylene chloride, and ethyl cell A mixed solution such as Solve or water is prepared.

Subsequently, the prepared various compositions are thoroughly mixed with a solvent using a mixer, and dispersed, and then an abrasive impregnating liquid having a desired component ratio is prepared. For example, an alumina abrasive (particle diameter 1 μm)
m) An abrasive impregnating liquid adjusted to a component ratio of 3 wt%, polyurethane resin 4 wt%, nitrocellulose 4 wt%, methyl ethyl ketone 44 wt%, and toluene 45 wt% is prepared. In addition, as a mixing machine, a paint shaker,
Ball mill, pot mill, dyna mill, sand mill, pin mill, pebble mill, stone mill, dissolver, attritor, high-speed mixer, Henschel mixer, planetarium mixer, press kneader, continuous loader, three-roll mill, two-roll mill, ultrasonic disperser, It is common to use a dispa or the like.

Then, the prepared abrasive impregnating liquid was mixed and dispersed in a sand mill for 10 hours to obtain a filtration accuracy of 2.
After filtration using a filter of μm, a nonwoven fabric made of polyester fiber is impregnated and then punched out, whereby a soft member 8 having abrasiveness due to impregnation with an abrasive is obtained. If the particle size of the abrasive particles impregnated in the soft member 8 is too large, polishing marks will be formed on the tape sliding surface of the magnetic head 1.
It must be 5 μm or less, and preferably 2 μm or less.

In the first embodiment, the magnetic recording / reproducing apparatus is provided with one rotating drum 2 and one fixed drum 3, but the magnetic recording / reproducing apparatus according to the modification shown in FIG. That is, there is also a magnetic recording / reproducing apparatus including one rotating drum and two fixed drums. Therefore, the magnetic recording / reproducing apparatus having such a configuration will be described with reference to FIGS. I do. In FIGS. 3 and 4, parts and portions that are the same as or correspond to those in FIGS. 1 and 2 are given the same reference numerals, and detailed descriptions thereof will be omitted.

The magnetic recording / reproducing apparatus according to this modification is
As shown in FIG. 3, a rotating drum 12 having a magnetic head 11, a pair of fixed drums 13 arranged at upper and lower positions of the rotating drum 12 while rotatably supporting the rotating drum 12, A head cleaner 14 for cleaning the tape sliding surface. At this time, the head cleaner 14
As shown in FIG. 4, it is configured by one rotating roller 15.

A rotary roller 15 constituting the head cleaner 14 is coaxially arranged with respect to a rotation center shaft 17 erected on a support member 16 and the rotary drum 1
3 and three rotatable soft members 18 and 19 which come into contact with the respective peripheral surfaces of the fixed drum 13 independently. The soft member 18 which is rotated while being in contact with the rotary drum 12 is made of polyester fiber. It is formed into a cylindrical shape using a nonwoven fabric or the like, and is impregnated with an abrasive such as alumina, for example, abrasive particles having a particle size of about 0.5 μm. Each of the soft members 19 in contact with each of the fixed drums 13 is made of a wool nonwoven fabric or the like, and is a soft member interposed between a pair of soft members 19 not impregnated with an abrasive. Reference numeral 18 is configured to be able to rotate independently while being in contact with each of the soft members 19. The number of the soft members 18 and 19 is not limited to three, but may be four or more.

Accordingly, the head cleaner 14 according to this modification operates under the condition as shown in FIG. 3, and the soft member 18 of the rotating roller 15 is disposed on the peripheral surface of the rotating drum 12 having the magnetic head 11. On the other hand, the soft members 19 located on the upper and lower sides thereof are in contact with the peripheral surfaces of the fixed drums 3. In this case, the soft member 18 is rotated by the rotating drum 12, and the soft member 19 is independent of the soft member 18, but is kept in contact with the peripheral surface of the fixed drum 13. It starts to rotate with the rotation of 18.

However, since the soft member 19 is in contact with the fixed drum 13, it is difficult for the soft member 19 to rotate, and even the rotation of the soft member 18 is weakened by the contact friction with the soft member 19. Therefore, as in the case of the first embodiment, the rotation speed of the soft member 18 is lower than the rotation speed of the rotary drum 12, and the rotation speed of the soft member 18 is reduced, so that the magnetic head 11 and the soft member 18 are rotated. As a result of the increase in the number of contacts and the contact force, the cleaning effect of the soft member 18 on the tape sliding surface of the magnetic head 11 is improved. In this modification, the soft member 19 is disposed at each of the upper and lower positions of the soft member 18. However, it is needless to say that the soft member 19 may be disposed only at the upper position of the soft member 18.

Next, referring to FIG. 5, which shows a simplified traveling system when the magnetic recording / reproducing apparatus is a VHS system VTR, a magnetic recording / reproducing apparatus including the head cleaner 4 according to the first embodiment will be described. The traveling system structure will be described. That is, FIG. 5 shows VHS which is a typical magnetic recording / reproducing apparatus.
1 shows a running system structure of a system VTR, wherein reference numeral 1 denotes a magnetic head, 2 denotes a rotating drum, 4 denotes a head cleaner,
1 is a magnetic tape, 22 is a supply reel, 23 is a take-up reel, 24 is a guide post, 25 is a tension regulator, 26 is a rotating post, 27 is an erasing head, 28 is a tilting post, 29 is an audio control head, and 30 is a cap. Reference numerals 31 and 31 denote a pinch roller, X denotes a rotation direction of the rotary drum 2, and Y denotes a movement direction of the head cleaner 4.

Then, the supply reel 2 in this VTR
The magnetic tape 21 wound around the tape 2 travels by a pull-in operation of the capstan 30 and the pinch roller 31, is pressed against the magnetic head 1 of the rotary drum 2 by the guide by the inclined post 28, and 30
Take-up reel 2 after passing between it and pinch roller 31
3 and the head cleaner 4
Is programmed in advance to operate when the magnetic tape 21 is inserted and ejected, and to operate when the output of the magnetic head 1 is monitored and a decrease in output is detected. Therefore, by adopting such a structure, it is possible to remove dirt from the magnetic head 1 and to remove foreign substances stuck to the magnetic head 1 due to burning or the like.
It is possible to perform stable recording and reproduction.

The outer peripheral speed of the head cleaner 4 provided in the VTR is about 1/6 of the outer peripheral speed of the rotary drum 2.
It has been confirmed by the inventors of the present invention that the outer peripheral speed of the conventional head cleaner is lower than the outer peripheral speed of the rotary drum, which is about 1/4. Here, the magnetic recording / reproducing apparatus is a VHS type VT
R, that is, a helical scan type VTR configured using a rotary magnetic head, but the same applies to a fixed head type and a vertical scan head type.

(Embodiment 2) FIG. 6 is a perspective view showing a configuration of a head cleaner according to Embodiment 2 and the main components of a magnetic recording / reproducing apparatus provided with this head cleaner are the same as those of Embodiment 1. It is similar. Therefore, a detailed description of the magnetic recording / reproducing apparatus will be omitted, and will be described with reference to FIG. 1 as far as necessary. In FIG. 6, the same components and parts as those in FIG. 2 are denoted by the same reference numerals.

As shown in FIG. 1, the magnetic recording / reproducing apparatus according to the second embodiment includes a rotating drum 2 having a magnetic head 1, a fixed drum 3 rotatably supporting the rotating drum 2, a magnetic drum 1 And a head cleaner 4 for cleaning the tape sliding surface. The head cleaner 4 is configured using one rotating roller 33 as shown in FIG. That is, the rotating roller 33 is coaxially disposed with respect to a rotation center shaft 7 made of plastic or the like, which is erected on the swingable support member 6, and is independent of the peripheral surfaces of the rotating drum 2 and the fixed drum 3. Rotatable soft members 3 that come into contact with each other
The rotary roller 33 disposed at a position facing the peripheral surface of the rotary drum 2 moves along the Y direction and then moves to the respective peripheral surfaces of the rotary drum 2 and the fixed drum 3. Is to approach. Note that the number of the soft members 34 and 35 is not limited to two, but may be three.
Needless to say, there may be more than one.

Then, the soft members 34, 3
5 is a cylindrical member, and the soft member 34 that is in contact with the peripheral surface of the rotary drum 2 is made of a nonwoven fabric such as wool or polyester fiber and is impregnated with a lubricant. Is made using a non-woven fabric such as polyester fiber or rayon fiber, and the soft member 34 is placed on the upper position of the soft member 35, and freely rotates while being in contact with the soft member 35 by its own weight. It can be done. The lubricant to be impregnated into the soft member 34 is, for example, HOOC-CF _2- (OC ₂
Perfluoropolyether (hereinafter, PF) having a chemical structural formula of F ₄ ) m- (OCF ₂ ) n-OCF ₂ —COOH
PE) is used, and this PFPE is superior in lubricity to lubricants such as silicone oil and higher fatty acids while being excellent in heat resistance, chemical resistance, and nonflammability.

Note that m and n in the above chemical structural formulas are integers of 1 or more, and since PFPE at room temperature is a liquid, it is easy to impregnate the nonwoven fabric. Also, PF
The chemical structural formula of PE is not limited to the above, and in order to improve the adhesion to the magnetic head 1, an amino group, a hydroxyl group, a sulfonic acid group, or the like is used in place of the carboxyl groups at both ends of the chemical structural formula. May be introduced. By the way, the soft member 34 at this time is produced by impregnating the wool nonwoven fabric with the diluted PFPE and then drying it, and then punching it into a cylindrical shape together with the soft member 35 made of the polyester fiber nonwoven fabric. I have.

That is, the head cleaner 4 according to the second embodiment also operates under the same condition as that shown in FIG. 1, and the soft member 34 of the rotating roller 33 is connected to the rotating drum 2 having the magnetic head 1. , While the soft member 35 contacts the peripheral surface of the fixed drum 3. Therefore, at this time, the soft member 34 impregnated with the lubricant is rotated by the rotary drum 2, and the soft member 35 rotates while being in contact with the peripheral surface of the fixed drum 3 with the rotation of the soft member 34. However, since the soft member 35 in contact with the fixed drum 3 hardly rotates, even the rotation of the soft member 34 is weakened by the contact friction with the soft member 35.

When the rotation speed of the soft member 34 is lower than the rotation speed of the rotary drum 2 and the rotation speed of the soft member 34 is lower, the number of contacts and the contact force between the magnetic head 1 and the soft member 34 increase. In addition, the cleaning effect of the soft member 34 on the tape sliding surface of the magnetic head 1 is improved. In the second embodiment, since the soft member 34 that comes into contact with the rotary drum 2 is impregnated with a lubricant, the soft member 34 removes dirt from the magnetic head 1 and acts on the magnetic head 1 by the action of the lubricant. The advantage is obtained that foreign matter can hardly adhere to the magnetic head 1 while improving the wear resistance of the head 1.
Note that PFPE is also used as a lubricant for ME tapes, and is compatible with magnetic heads and magnetic tapes.

Subsequently, when the magnetic recording / reproducing apparatus is a DV system V
A running system structure of a magnetic recording / reproducing apparatus including the head cleaner 4 according to the second embodiment will be described with reference to FIG. 7, which shows a simplified running system in the case of a TR. FIG.
FIG. 7 shows a traveling system structure of a DV system VTR.
Reference numeral 1 is a magnetic head 1, 2 is a rotary drum, 4 is a head cleaner, 21 is a magnetic tape, 22 is a supply reel, 2
3 is a take-up reel, 24 is a guide post, 25 is a tension regulator, 30 is a capstan, 31 is a pinch roller, 37 is an inclined rotating post, and X is a rotating drum 2.
, Y indicates the moving direction of the head cleaner 4.

That is, the magnetic tape 21 wound on the supply reel 22 constituting the VTR travels by a pull-in operation by the capstan 30 and the pinch roller 31, and is guided by the inclined rotating post 37. 2 against the magnetic head 1 and the capstan 30
And is wound by the take-up reel 23 between the pinch rollers 31. The head cleaner 4 operates when the magnetic tape 21 is inserted and when the magnetic tape 21 is ejected. The head cleaner 4 removes dirt from the magnetic head 1 and supplies a lubricant to the magnetic head 1. The abrasion resistance of the magnetic head 1 is improved, and the advantage that dirt is hardly attached can be secured.

In the second embodiment, the soft member 34 of the rotating roller 33 constituting the head cleaner 4 is used.
Is impregnated with a lubricant. However, the present invention is not limited to such a configuration. For example, even if the soft member 34 at this time has an abrasive property and is impregnated with a lubricant, Of course it is good. That is, although not shown, here, an abrasive impregnating liquid is prepared by using alumina having a particle size of about 1 μm,
For example, a soft member 34 made of a nonwoven fabric of nylon fiber is impregnated with an abrasive impregnating liquid and dried, and then the dry soft member 34 is treated with P as a lubricant separately prepared.
The soft member 3 which is impregnated with FPE after being diluted, has abrasive properties, and is impregnated with a lubricant.
4 and the soft member 35 made of rabbit hair or the like are both punched into a cylindrical shape.

In the case of the rotating roller 33 composed of the soft members 34 and 35 manufactured as described above, the advantages described in the first and second embodiments are also secured. In the second embodiment, the soft member 34
It is stated that the lubricant is impregnated with the abrasive after impregnating the abrasive.However, the method is not limited to such a procedure.For example, the lubricant is dispersed together with the abrasive particles in the binder and the abrasive is impregnated with the abrasive. It is a matter of course that the non-woven fabric may be impregnated after preparing the above-mentioned paint.

(Embodiment 3) FIG. 8 is a perspective view showing a configuration of a head cleaner according to Embodiment 3 of the present invention. The main configuration of a magnetic recording / reproducing apparatus provided with this head cleaner is described in Embodiments 1 and 2. Same as 2. Therefore, a detailed description of the magnetic recording / reproducing apparatus will be omitted here, and will be described with reference to FIG. 1 as far as necessary.
In FIG. 8, parts and portions that are the same as those in FIG. 2 are given the same reference numerals.

The magnetic recording / reproducing apparatus according to the third embodiment includes a rotating drum 2 having a magnetic head 1, a fixed drum 3 rotatably supporting the rotating drum 2, and a tape sliding surface of the magnetic head 1 for cleaning. A magnetic tape (not shown) is run with the rotation of the rotary drum 2 along the X direction. The head cleaner 4 includes two rotating rollers 5 and 39 as shown in FIG. 8, and the rotating roller 5 includes a swingable support member 6 similar to the first embodiment. Being coaxially arranged with respect to the rotation center axis 7 made of plastic or the like erected above,
It comprises two rotatable soft members 8 and 9 which come into contact with the peripheral surfaces of the rotating drum 2 and the fixed drum 3 independently. The rotating roller 5 is a rotating drum 2
Is arranged at a position opposed to the peripheral surface of the rotary drum 2 and moves in the Y direction to approach or separate from the respective peripheral surfaces of the rotating drum 2 and the fixed drum 3.

The soft members 8 and 9 at this time are both formed in a cylindrical shape, and the soft member 8 that comes into contact with the peripheral surface of the rotary drum 2 is manufactured using a nonwoven fabric of polyester fiber or the like. A material impregnated with an abrasive (abrasive particles) such as an alumina-based material, that is, one having an abrasive property. On the other hand, the soft member 9 coaxially arranged with the soft member 8 with the rotation center shaft 7 is manufactured using a wool nonwoven fabric or the like, and is not impregnated with an abrasive.
The independent soft member 8 placed on the upper position of the soft member 9 is configured to be able to freely rotate while being in contact with the soft member 9 by its own weight.

Further, with respect to such a rotating roller 5, the other rotating roller 39 has one rotatable soft member 40 which is rotated while being in contact with the peripheral surfaces of both the rotating drum 2 and the fixed drum 3. The soft member 40 has a cylindrical shape made of a non-woven fabric of nylon fiber or the like, and has a rotation center shaft 42 made of plastic or the like erected on a swingable support member 41. Is fitted outside. Here, it is assumed that the head cleaner 4 is constituted by the two rotating rollers 5 and 39, but it is needless to say that the head cleaner 4 may be constituted by using three or more rotating rollers. It is.

The head cleaner 4 having the rotating rollers 5 and 39 is provided with the rotating rollers 5 and 39.
39 are simultaneously operated so as to approach the peripheral surfaces of the rotating drum 2 and the stationary drum 3, and at this time,
The soft member 8 arranged at the upper position of the rotating roller 5 contacts the peripheral surface of the rotating drum 2 having the magnetic head 1, and the soft member 9 arranged at the lower position contacts the peripheral surface of the fixed drum 3. Will be. Therefore, the soft member 8 in contact with the peripheral surface of the rotating drum 2 is rotated by the rotating drum 2 rotating along the X direction, and the soft member 9 rotates with the rotation of the soft member 8. Despite the start, the rotation of the soft member 8 is weakened because the soft member 9 remains in contact with the peripheral surface of the fixed drum 3.
Therefore, as compared with the case where the soft member 8 is in contact with the peripheral surface of the rotary drum 2 alone, the rotation speed of the soft member 8 is slower, and the contact between the magnetic head 1 of the rotary drum 2 and the soft member 8 is reduced. As a result of the increase in the number of times and the contact force, dirt on the magnetic head 1 is sufficiently removed for practical use.

Further, the soft member 40 of the rotating roller 39 which is in contact with the peripheral surfaces of both the rotating drum 2 and the fixed drum 3 simultaneously with the rotating roller 5, is also rotated by the rotating drum 2, and this soft member In some cases, the foreign matter removed from the magnetic head 1
Even if the foreign matter adheres to the peripheral surface of the rotary drum 2 after detaching from the magnetic head 1, the adhered foreign matter is removed from the magnetic head 1 again. By the way, in the third embodiment, the two rotating rollers 5 and 39 are simultaneously brought into contact with both the rotating drum 2 and the fixed drum 3. For example, when the tape cassette is inserted or ejected, the non-abrasive rotating roller 39 is brought into contact with the tape cassette. If the magnetic head 1 becomes dirty and clogged, the abrasive roller 5 is brought into contact. It is also possible to make it.

Next, the head cleaner 4 according to the third embodiment is provided with reference to FIG. 9, which shows a simplified running system when the magnetic recording / reproducing apparatus is a DDS (digital data storage). The running system structure of the magnetic recording / reproducing apparatus will be described. In FIG. 9, reference numeral 1 denotes a magnetic head, 2 denotes a rotary drum, 4 denotes a head cleaner, 21 denotes a magnetic tape, 22 denotes a supply reel, 23 denotes a take-up reel, 24 denotes a guide post, 26 denotes a rotation post, and 28 denotes an inclined post. ,
Reference numeral 30 denotes a capstan, 31 denotes a pinch roller, X denotes a rotation direction of the rotary drum 2, and Y denotes a movement direction of the head cleaner 4.

That is, the supply reel 22 in the DDS
The magnetic tape 21 wound around is driven by the pull-in operation of the capstan 30 and the pinch roller 31, is pressed against the magnetic head 1 of the rotary drum 2 by the guide by the inclined post 28, and Take-up reel 23 after passing between the
It is wound up. At this time, the head cleaner 4 is programmed to operate when the error rate falls below a certain value, and the two rotating rollers 5 and 39 of the head cleaner 4 simultaneously rotate the rotating drum 2. And fixed drum 3. Therefore, in this DDS, the head cleaner 4 operates when the foreign matter adheres to the magnetic head 1 and the error rate deteriorates, and the dirt adhered to the magnetic head 1 is removed by the head cleaner 4, so that the reliability is improved. Is improved.

(Fourth Embodiment) FIG. 10 is a perspective view showing the structure of a head cleaner according to a fourth embodiment. The main components of a magnetic recording / reproducing apparatus equipped with this head cleaner are described in the first to fourth embodiments. Same as 3. Therefore, a detailed description of the magnetic recording / reproducing apparatus will be omitted, and will be described with reference to FIG. 1 as far as necessary. In FIG. 10, the same components and parts as those in FIG. 2 are denoted by the same reference numerals.

The magnetic recording / reproducing apparatus according to the fourth embodiment includes a rotating drum 2 having a magnetic head 1, a fixed drum 3 rotatably supporting the rotating drum 2, and a tape sliding surface of the magnetic head 1 for cleaning. The head cleaner 4 is provided with two rotating rollers 5 as shown in FIG. In this case, the rotating roller 5
Is a rotation center shaft 7 made of plastic or the like erected on a swingable support member 6 as in the first embodiment.
And two rotatable soft members 8 and 9 that come into contact with the peripheral surfaces of the rotating drum 2 and the fixed drum 3 independently of each other. Each of the rotating rollers 5 is disposed at a position facing the peripheral surface of the rotating drum 2 and moves in the Y direction to approach the respective peripheral surfaces of the rotating drum 2 and the fixed drum 3, or , Will be separated.

That is, all of these rotary rollers 5 are coaxially arranged with respect to a rotation center shaft 7 made of plastic or the like, which is erected on a swingable support member 6, and the rotary drum 2 and the fixed drum 3 It is configured to include two rotatable soft members 8 and 9 that come into contact with the respective peripheral surfaces independently, and the soft members 8 and 9 are both cylindrical. The soft member 8 that comes into contact with the peripheral surface of the rotating drum 2 is made of a nonwoven fabric of polyester fiber and impregnated with an abrasive such as alumina, that is, has a polishing property. . On the other hand, a soft member 9 coaxially arranged with the soft member 8 with the rotation center axis 7.
Is made using a wool nonwoven fabric and is not impregnated with an abrasive. The independent soft member 8 placed above the soft member 9 and coming into contact with the soft member 9 by its own weight However, it is configured to be freely rotatable.

In this embodiment, the soft member 8 is made of a nonwoven fabric of polyester fiber impregnated with an abrasive, but the material is not limited thereto. It is also possible to produce the soft member 8 by using a material obtained by weaving fibers having an abrasive property as described above in a nonwoven fabric made of polyester fibers at a rate of about 30 wt% or more. And
The use of such a soft member 8 is considered to be effective because the polishing force and the rigidity can be adjusted by changing the weaving amount of the Kevlar fiber. Here, it is assumed that Kevlar fiber is woven, but it is a matter of course that the Kevlar fiber may be 100 wt%.

The head cleaner 4 having the two rotating rollers 5 is operated so that these rotating rollers 5 simultaneously approach the peripheral surfaces of the rotating drum 2 and the fixed drum 3. Each of the soft members 8 disposed above the rotating rollers 5 is provided with a magnetic head 1.
, And each of the soft members 9 arranged below the rotating drum 2 is in contact with the peripheral surface of the fixed drum 3. Therefore, the soft member 8 of each of the rotating rollers 5 is rotated by the rotating drum 2, and although the soft member 9 starts to rotate with the rotation of the soft member 8, the soft member 9 is fixed to the fixed drum. 3, the rotation of each soft member 8 is weakened. Therefore, the rotation speed of the soft member 8 is reduced, and the number of times of contact and the contact force between the magnetic head 1 of the rotating drum 2 and the soft member 8 are increased. As a result, dirt on the magnetic head 1 is practically sufficiently removed. become.

In the present embodiment, the head cleaner 4
Is constituted by the two rotating rollers 5, so that the dirt on the magnetic head 1 can be surely removed. As a result, the advantage that the reliability of the magnetic head 1 can be easily secured is also obtained. . Note that it is not always necessary that the two rotating rollers 5 are brought into contact with both the rotating drum 2 and the fixed drum 3 at the same time. is there.

In the fourth embodiment, the head cleaner 4 is composed of two rotating rollers 5 each having the soft member 8 having abrasiveness. However, the present invention is not limited to such a configuration. They do not
It is also possible to adopt the configurations of various modifications 1 to 5 as described below. In the following description, the rotating rollers 5, 3
Although the number of each of the soft members 3 and the soft members 8 and 34 is two, the number is not limited to two but may be three or more.

<Modification 1> As shown in FIG. 10, the head cleaner 4 of Modification 1 is composed of two rotating rollers 5 and 33, and one rotating roller 5 is coaxially arranged. In addition, two rotatable soft members 8 and 9 that come into contact with the respective peripheral surfaces of the rotating drum 2 and the fixed drum 3 independently are provided, and the soft member 8 that is rotated by the rotating drum 2 is abrasive. On the other hand, the other rotating rollers 33 are coaxially arranged and independently contact the peripheral surfaces of the rotating drum 2 and the fixed drum 3 as described in the second embodiment. The rotating drum 2 includes two rotatable soft members 34 and 35.
The soft member 34 rotated by the rotation is impregnated with a lubricant such as perfluoropolyether. The two rotating rollers 5 and 33 may be brought into contact with both the rotating drum 2 and the fixed drum 3 at the same time. For example, when the tape cassette is inserted or ejected, the rotating roller impregnated with the lubricant is used. It is also possible to selectively use such that the roller 33 is brought into contact, and when the output or error rate of the magnetic head 1 is lowered, the rotating roller 5 having abrasiveness is brought into contact.

<Modification 2> Although not shown, the head cleaner 4 of Modification 2 includes two rotating rollers 5 and 33, and one rotating roller 5 is coaxially arranged. It has two rotatable soft members 8 and 9 that come into contact with the peripheral surfaces of the rotating drum 2 and the fixed drum 3 independently, and the soft member 8 that is rotated by the rotating drum 2 has abrasiveness. On the other hand, the other rotating roller 33 includes two rotatable soft members 34 and 35 which are coaxially arranged and come into independent contact with the respective peripheral surfaces of the rotating drum 2 and the fixed drum 3. The soft member 34 rotated by the rotating drum 2 has abrasiveness and is impregnated with a lubricant such as perfluoropolyether.

<Modification 3> The head cleaner 4 is composed of two rotating rollers 33 and one rotating roller 3
Reference numeral 3 denotes two rotatable soft members 34 and 35 which are coaxially arranged and come into contact with the respective peripheral surfaces of the rotary drum 2 and the fixed drum 3 independently, and are rotated by the rotary drum 2. Reference numeral 34 denotes a member impregnated with a lubricant, while the other rotating roller 33 has the same configuration and includes two rotatable soft members 34 and 35, which are rotated by the rotating drum 2. Soft member 34
Has abrasiveness and is impregnated with a lubricant.

<Modification 4> The head cleaner 4 is composed of two rotating rollers 33.
Each of the rotary drums 3 is provided with two rotatable soft members 34 and 35 which are coaxially arranged and come into contact with the respective peripheral surfaces of the rotary drum 2 and the fixed drum 3 independently. Each of the soft members 34 to be rotated is impregnated with a lubricant.

<Fifth Modification> The head cleaner 4 is composed of two rotating rollers 33.
Each of the rotary drums 3 is provided with two rotatable soft members 34 and 35 which are coaxially arranged and come into contact with the respective peripheral surfaces of the rotary drum 2 and the fixed drum 3 independently. Each of the soft members 34 to be rotated has abrasiveness and is impregnated with a lubricant.

Next, referring to FIG. 11, which shows a simplified running system when the magnetic recording / reproducing apparatus is a DDS,
A traveling system structure of the magnetic recording / reproducing apparatus when the head cleaner 4 is the first modification will be described. 11, 1 is a magnetic head, 2 is a rotating drum, 4 is a head cleaner, 21 is a magnetic tape, 22 is a supply reel, 23 is a take-up reel, 24 is a guide post, 26 is a rotary post, 28
Is an inclined post, 30 is a capstan, 31 is a pinch roller, X is the rotation direction of the rotary drum 2, and Y is the movement direction of the head cleaner 4. The head cleaner 4 here is composed of two rotating rollers 5 and 33, and only one of the two rotating rollers 5 (33) is used for the rotating drum 2 and the fixed drum 3. Soft members 8 and 9 of the rotating roller 5 which are brought close to each other.
The head cleaner 4 includes a pair of solenoids 45 functioning as selection means for bringing (34, 35) into contact with the peripheral surfaces of the rotary drum 2 and the fixed drum 3 respectively.
Performs operations as shown in FIG. 12 as necessary.

That is, the supply reel 22 in the DDS
The magnetic tape 21 wound around is driven by the pull-in operation of the capstan 30 and the pinch roller 31, is pressed against the magnetic head 1 of the rotary drum 2 by the guide by the inclined post 28, and Take-up reel 23 after passing between the
It is wound up. Then, the head cleaner 4 at this time is caused to execute an operation as shown in FIG. 12 based on which solenoid 45 is supplied with current.

FIG. 12 (a) shows a state where the head cleaner 4 is not operating, and FIG. 12 (b) shows a state where only the rotating roller 5 is in contact with the rotating drum 2 and the fixed drum 3, and FIG. ) Indicates that only the rotating roller 33 is the rotating drum 2
And a state in contact with the fixed drum 3. Therefore, when the tape cassette is inserted or ejected in the DDS, the rotary roller 33 impregnated with the lubricant is brought into contact with the magnetic head 1. When foreign matter adheres to the magnetic head 1 and the error rate deteriorates, the rotary roller 5 having abrasive properties is brought into contact. By doing so, dirt is less likely to adhere due to the action of the lubricant, and even if foreign matter has adhered, the foreign matter can be reliably removed by the rotating roller 5 having abrasiveness.

[0074]

As described above, in the magnetic recording / reproducing apparatus according to the present invention, the head cleaner for cleaning the tape sliding surface of the magnetic head is constituted by one or a plurality of rotating rollers. A plurality of rotatable soft members having a single rotating roller disposed coaxially and coming into contact with the peripheral surfaces of the rotating drum and the fixed drum independently, and being rotated by the rotating drum Are those having abrasive properties, those impregnated with a lubricant, or those having abrasive properties and being impregnated with a lubricant. Therefore, there is no possibility that the peripheral surface of the rotating drum or the like is damaged by the head cleaner, and it is possible to efficiently wipe off the foreign matter adhering to the magnetic head, and it is possible to obtain an effect that a practically sufficient cleaning action can be obtained.

[Brief description of the drawings]

FIG. 1 is a simplified side view showing a configuration of a main part of a magnetic recording and reproducing apparatus according to a first embodiment.

FIG. 2 is a perspective view illustrating a configuration of a head cleaner according to the first embodiment.

FIG. 3 is a simplified side view showing a main configuration of a magnetic recording / reproducing apparatus according to a modification.

FIG. 4 is a perspective view showing a configuration of a head cleaner according to a modification.

FIG. 5 is an explanatory diagram showing a traveling system structure of a VHS system VTR.

FIG. 6 is a perspective view illustrating a configuration of a head cleaner according to a second embodiment.

FIG. 7 is an explanatory diagram showing a traveling system structure of a DV system VTR.

FIG. 8 is a perspective view showing a configuration of a head cleaner according to a third embodiment.

FIG. 9 is an explanatory diagram showing a traveling system structure of the DDS.

FIG. 10 is a perspective view illustrating a configuration of a head cleaner according to a fourth embodiment.

FIG. 11 is an explanatory diagram showing a traveling system structure of the DDS.

FIG. 12 is an explanatory diagram showing an operation state of the head cleaner.

FIG. 13 is a simplified perspective view showing a main configuration of a magnetic recording / reproducing apparatus according to a conventional mode.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Magnetic head 2 Rotating drum 3 Fixed drum 4 Head cleaner 5 Rotating roller 8 Soft member 9 Soft member 33 Rotating roller 34 Soft member 35 Soft member

Claims (12)

[Claims] 1. A magnetic recording / reproducing apparatus comprising: a rotating drum having a magnetic head; a fixed drum supporting the rotating drum; and a head cleaner for cleaning a tape sliding surface of the magnetic head. Is constituted by a single rotating roller, which is provided with a plurality of rotatable soft members which are coaxially arranged and come into independent contact with the respective peripheral surfaces of the rotating drum and the fixed drum. A magnetic recording / reproducing apparatus, wherein the soft member rotated by the rotating drum has abrasiveness. 2. A magnetic recording / reproducing apparatus comprising: a rotating drum having a magnetic head; a fixed drum supporting the rotating drum; and a head cleaner for cleaning a tape sliding surface of the magnetic head. Is constituted by a single rotating roller, which is provided with a plurality of rotatable soft members which are coaxially arranged and come into independent contact with the respective peripheral surfaces of the rotating drum and the fixed drum. A magnetic recording / reproducing apparatus, wherein a soft member rotated by a rotary drum is impregnated with a lubricant. 3. A magnetic recording / reproducing apparatus comprising: a rotating drum having a magnetic head; a fixed drum for supporting the rotating drum; and a head cleaner for cleaning a tape sliding surface of the magnetic head. Is constituted by a single rotating roller, which is provided with a plurality of rotatable soft members which are coaxially arranged and come into independent contact with the respective peripheral surfaces of the rotating drum and the fixed drum. There is a soft member that can be rotated by the rotating drum has abrasiveness,
A magnetic recording / reproducing apparatus characterized by being impregnated with a lubricant. 4. A magnetic recording / reproducing apparatus comprising: a rotary drum having a magnetic head; a fixed drum supporting the rotary drum; and a head cleaner for cleaning a tape sliding surface of the magnetic head. Is composed of a plurality of rotating rollers, and the single rotating roller is provided with a plurality of rotatable soft members which are coaxially arranged and independently contact the respective peripheral surfaces of the rotating drum and the fixed drum. The soft member that is rotated by the rotating drum has abrasiveness, while the other rotating roller is a single rotatable member that is rotated while being in contact with the peripheral surfaces of both the rotating drum and the stationary drum. A magnetic recording / reproducing apparatus comprising a soft member. 5. A magnetic recording / reproducing apparatus comprising: a rotating drum having a magnetic head; a fixed drum supporting the rotating drum; and a head cleaner for cleaning a tape sliding surface of the magnetic head. Is composed of a plurality of rotating rollers, each of which is provided with a plurality of rotatable soft members which are coaxially arranged and independently contact the respective peripheral surfaces of the rotating drum and the fixed drum. A magnetic recording / reproducing apparatus, wherein each of the soft members rotated by the rotating drum has polishing properties. 6. A magnetic recording / reproducing apparatus comprising: a rotary drum having a magnetic head; a fixed drum supporting the rotary drum; and a head cleaner for cleaning a tape sliding surface of the magnetic head. Is composed of a plurality of rotating rollers, and the single rotating roller is provided with a plurality of rotatable soft members which are coaxially arranged and independently contact the respective peripheral surfaces of the rotating drum and the fixed drum. The soft member that can be rotated by the rotating drum has abrasiveness, while the other rotating rollers are coaxially arranged and independently contact the peripheral surfaces of the rotating drum and the fixed drum. It is provided with a rotatable soft member, and the soft member rotated by the rotary drum is characterized by being impregnated with a lubricant. Magnetic recording and reproducing apparatus according to. 7. A magnetic recording / reproducing apparatus comprising: a rotary drum having a magnetic head; a fixed drum supporting the rotary drum; and a head cleaner for cleaning a tape sliding surface of the magnetic head. Is composed of a plurality of rotating rollers, and the single rotating roller is provided with a plurality of rotatable soft members which are coaxially arranged and independently contact the respective peripheral surfaces of the rotating drum and the fixed drum. The soft member that can be rotated by the rotating drum has abrasiveness, while the other rotating rollers are coaxially arranged and independently contact the peripheral surfaces of the rotating drum and the fixed drum. The soft member which is rotatable by the rotating drum has abrasiveness, and is impregnated with a lubricant. Magnetic recording and reproducing apparatus, characterized in that. 8. A magnetic recording / reproducing apparatus comprising: a rotating drum having a magnetic head; a fixed drum supporting the rotating drum; and a head cleaner for cleaning a tape sliding surface of the magnetic head. Is composed of a plurality of rotating rollers, and the single rotating roller is provided with a plurality of rotatable soft members which are coaxially arranged and independently contact the respective peripheral surfaces of the rotating drum and the fixed drum. The soft member that can be rotated by the rotating drum is impregnated with a lubricant, while the other rotating rollers are coaxially arranged and independently contact the peripheral surfaces of the rotating drum and the fixed drum. It is provided with a plurality of rotatable soft members, and the soft member rotated by the rotary drum has abrasiveness and is impregnated with a lubricant. Magnetic recording and reproducing apparatus, characterized in that the. 9. A magnetic recording / reproducing apparatus comprising: a rotating drum having a magnetic head; a fixed drum supporting the rotating drum; and a head cleaner for cleaning a tape sliding surface of the magnetic head. Is composed of a plurality of rotating rollers, each of which is provided with a plurality of rotatable soft members which are coaxially arranged and independently contact the respective peripheral surfaces of the rotating drum and the fixed drum. A magnetic recording / reproducing apparatus, wherein each of the soft members rotated by the rotary drum is impregnated with a lubricant. 10. A magnetic recording / reproducing apparatus comprising: a rotary drum having a magnetic head; a fixed drum supporting the rotary drum; and a head cleaner for cleaning a tape sliding surface of the magnetic head. Is composed of a plurality of rotating rollers, each of which is provided with a plurality of rotatable soft members which are coaxially arranged and independently contact the respective peripheral surfaces of the rotating drum and the fixed drum. A magnetic recording / reproducing apparatus, wherein each of the soft members rotated by the rotary drum has abrasiveness and is impregnated with a lubricant. 11. The magnetic recording / reproducing apparatus according to claim 2, wherein the lubricant impregnated in the soft member is perfluoropolyether. A magnetic recording / reproducing apparatus, comprising: 12. The magnetic recording / reproducing apparatus according to claim 4, wherein only one of the plurality of rotating rollers is brought closer to the rotating drum and the fixed drum. A magnetic recording / reproducing apparatus comprising selecting means for bringing a soft member included in the approaching rotating roller into contact with the peripheral surface of each of the rotating drum and the fixed drum.