JP2006059473A - Magnetic tape drive apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problems of damage and wear by a tape guide for a magnetic tape. <P>SOLUTION: At least a tape guide surface 65S having a long tape slide surface among tape guides 61-64 for performing the travel guide of the magnetic tape 1 is made of a component 72 in which a nonmagnetic high-hardness particle 71 having higher hardness than that of a metal base material 70 is dispersed in the nonmagnetic metal base material 70. The surface is set to be an ultra-mirror-surface machining finish surface. The edge section of the high-hardness particle projects on the surface, thus avoiding damage and wear by the tape guide of the magnetic tape by reducing friction at the low-speed slide with the magnetic tape. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a magnetic tape drive apparatus suitable for application to a linear tape drive apparatus using, for example, a linear magnetic tape.

In recent years, there is an increasing demand for a data storage system using a linear magnetic tape capable of recording a large amount of information in response to a request from a backup device due to an increase in the amount of data handled, for example, in a computer system.
As shown schematically in FIG. 2, the magnetic tape 1 in the linear tape system used in such a data storage system or the like has a large number of data recording / reproduction performed linearly along the running direction in the longitudinal direction. Data bands DB (DB1, DB2, DB3...) Are juxtaposed in the tape width direction.
In the data band DB, a large number of data recording tracks (not shown) each extending along the longitudinal direction of the magnetic tape are formed side by side in the width direction.

Each data band DB is sandwiched between servo bands SB (SB1, SB2, SB3...), And a plurality of selected data recording tracks in each data band DB are recorded by servo signals recorded in advance in these servo bands SB. The tracking servo that finely controls the magnetic head in the tape width direction is performed so that the corresponding magnetic gaps of the multi-channel magnetic head face each other at the same time.
The servo band SB is formed in parallel with one side edge of the linear type magnetic tape as a reference edge 1SE while maintaining a predetermined interval.

As the amount of recorded information increases, the performance of the magnetic tape itself is required to increase. With this, the physical strength of the magnetic tape is lowered and is becoming more fragile.
For this reason, higher measures are required such as damage to the magnetic tape during magnetic tape drive and wear due to sliding contact with the magnetic head.
That is, in high-density recording, a protection measure against tape damage to the magnetic tape is required as one of the basic performances required for the tape running system.

  In addition, as the recording track pitch is further reduced toward larger information recording, the recording of the magnetic head can be performed in order to avoid outtracking, tracking error, and S / N reduction of the reproduction signal. Also, the tape running system is required to suppress the occurrence of so-called LTM (Lateral Tape Motion) as much as possible when the reproducing magnetic gap faces the target servo track and data recording track. It is required as one of the basic performances.

By the way, as a tape guide in the linear tape drive device, for example, a roller guide system and a dynamic pressure type system have been put into practical use, and proposals such as an air guide system and a fixed eaves type tape press have been made.
In the roller guide method, since the guide rotates, the tape wear is small. This roller guide has a configuration in which flanges for restricting movement in the width direction (LTM) of the magnetic tape are provided at both ends of the roller guide. The interval between the flanges is set to be slightly wider than the magnetic tape width.
However, in this configuration, as the information recording capacity is increased, the suppression of LTM required for a linear tape with a further reduced track pitch becomes insufficient.

  Further, in the dynamic pressure type tape guide, the tape is guided and traveled by interposing air between the tape and the tape guide surface by the dynamic pressure caused by the entrainment of air by the travel of the magnetic tape. According to this dynamic pressure type tape guide, wear of the magnetic tape can be effectively avoided.

  However, in this configuration, when the magnetic tape is traveling at high speed, the magnetic tape is effectively prevented from being worn, but the tape speed is reduced, for example, when the magnetic tape starts and stops, when the tape is reciprocated. When the traveling speed of the magnetic tape is reduced in the unsteady state of traveling of the magnetic tape, such as when the traveling is reversed, the dynamic pressure decreases or disappears, and the magnetic tape comes into sliding contact with the guide. In addition, normally, in such an unsteady state of the magnetic tape running, the tension of the magnetic tape is extremely increased, so that the magnetic tape is strongly contacted and the magnetic tape is damaged or worn at this time. There's a problem.

On the other hand, in the air guide method, the problem of the traveling speed of the magnetic tape in the above-described dynamic pressure type method is solved, but since equipment such as an air pump for air supply is necessary, the size of the device is increased. High cost.
Moreover, in the tape guide by the fixed eaves type tape pressing method, there is a problem that the magnetic tape is greatly affected by the friction due to the guide material and the surface condition of the tape pressing portion of the guide, and the tape of the magnetic tape. There is a problem that the movement in the width direction (LTM) is determined by the accuracy of the part and cannot be adjusted.

  As described above, in the magnetic tape drive apparatus, various proposals have been made regarding the tape guide, and various research and development have been conducted on methods for reducing friction between the tape guide surface and the magnetic tape.

For example, a guide has been proposed in which particles of wear-resistant material are deposited on the surface of a tape guide by high-speed jetting to reduce the coefficient of friction of the surface (see Patent Document 1).
In this case, although the friction coefficient can be reduced, the wear-resistant particles are obtained to a desired density, uniformly with this density, and the control of the protruding amount of the particles is obtained with good reproducibility. Therefore, relatively high technology and accuracy are required.
JP-A-4-181540

The present invention can effectively avoid damage and wear of a magnetic tape in a magnetic tape drive device, for example, a linear tape drive device, and can stably and uniformly provide stable magnetic tape travel guidance with a simple configuration. The present invention provides a magnetic tape drive device that can be manufactured at low cost.
The present invention also provides a magnetic tape drive device that can avoid the occurrence of damage and wear of the magnetic tape even when the running speed of the magnetic tape is reduced in the dynamic pressure type system. is there.

  In the magnetic tape drive device according to the present invention, the tape guide surface of the tape guide for running and guiding the magnetic tape has at least a tape guide surface having a large sliding contact area with the magnetic tape in the nonmagnetic metal base material as compared with the metal base material. Consists of a constituent material in which non-magnetic high hardness particles of hardness are dispersed, the surface of which is a super mirror finished surface, and the ends of the dispersed high hardness particles project from the surface of the metal base material on the surface It is characterized by that.

The magnetic tape drive device according to the present invention is characterized in that the amount of protrusion of the high hardness particles from the surface of the metal base material is 0.05 μm to 0.2 μm.
In the magnetic tape drive device according to the present invention, the amount of the high hardness particles mixed in the constituent material in which the high hardness particles are dispersed in the metal base material is selected to be 10% by mass to 20% by mass of the constituent material. It is characterized by comprising.
The present invention is characterized in that the metal base material is made of an Al alloy.
The present invention is characterized in that the high hardness particles are composed of high hardness silicon compound particles.

Further, according to the present invention, a flange is provided at one end edge of the tape guide, and an end edge of the tape guide opposite to the side having the flange protrudes toward the magnetic tape side. It is characterized by being tilted.
The present invention is characterized in that the tape guide is a dynamic pressure type tape guide.

  In the magnetic tape drive apparatus according to the present invention, as described above, the tape guide surface is formed as a surface obtained by ultra-mirror finishing of a constituent material in which high-hardness non-magnetic high-hardness particles are dispersed in a non-magnetic metal base material. By adopting a configuration in which the end of the high hardness particle protrudes from the surface of the metal base material on the surface, the magnetic tape mainly comes into contact with the protruding high hardness particle. By selecting the amount of particles dispersed, the friction coefficient with the magnetic tape could be selected as a friction coefficient suitable for low-speed running of the magnetic tape.

  When the protruding amount of the high hardness particles from the surface of the metal base material is set to 0.05 μm to 0.2 μm, the magnetic tape hits well. That is, if it is less than 0.05 μm, the effect of reducing friction is insufficient, and if it exceeds 0.2 μm, the contact pressure of the magnetic tape at the protruding portion of the high-hardness particles is increased, and the magnetic tape may be damaged. Was found to occur.

  In the present invention, the high hardness particles are made to protrude from the surface of the metal base material by cutting the constituent material dispersed in the metal base material, so that the dispersion of the protruding high hardness particles is uniformly reproducible. In addition, it can be formed by being dispersed with a desired dispersion density, and for this reason, a magnetic tape drive apparatus as designed can be stably formed.

  Specifically, it has been found that when the mixing amount of the high hardness particles is selected from 10% by mass to 20% by mass of the constituent material, appropriate friction control can be performed. That is, if it is less than 10% by mass, the effect of reducing friction with the magnetic tape is thin, and if it exceeds 20% by mass, for example, a cutting tool is damaged when processing and manufacturing the target tape guide. This is due to problems such as processing.

  Further, in the apparatus of the present invention, when a dynamic pressure type tape guide is used as the tape guide, a low-speed unsteady state in which air is not entrapped from the required tape speed at which the magnetic tape can be steadily run, that is, air can be entrapped. Even in the case of running, it is possible to avoid tape damage and the like because the friction is reduced. Therefore, as mentioned at the beginning, in order to avoid damage to the tape, etc., it is possible to avoid the increase in size and cost of the equipment due to the equipment such as the air pump for air feeding by applying the air guide method. is there.

Embodiments of the magnetic tape drive apparatus according to the present invention will be described with reference to the drawings, but the present invention is not limited to these embodiments.
FIG. 1 is a schematic plan view illustrating a linear magnetic tape drive apparatus according to the present invention. In this case, in the reciprocating transition of the magnetic tape 1, the first and the second are the supply side and the other is the winding side. It has second reels 21 and 22, magnetic head 2, and magnetic tape travel guide means 23.

  As described above, the magnetic tape 1 is a linear magnetic tape used in a linear tape system, for example, as shown in FIG. 2, and a number of data bands in which data is recorded and reproduced linearly along the running direction in the longitudinal direction. DB (DB1, DB2, DB3...) Are juxtaposed in the tape width direction. In the data band DB, a large number of data recording tracks (not shown) each extending along the longitudinal direction of the magnetic tape are formed side by side in the width direction.

Each data band DB is sandwiched between servo bands SB (SB1, SB2, SB3...), And a plurality of selected data recording tracks in each data band DB are recorded by servo signals recorded in advance in these servo bands SB. The tracking servo for finely adjusting the magnetic head in the tape width direction is performed so that the corresponding magnetic gaps of the multi-channel magnetic head face each other at the same time.
The servo band SB is formed in parallel with one side edge of the linear type magnetic tape as a reference edge 1SE while maintaining a predetermined interval.

  As shown in FIG. 1, the magnetic tape travel guide means 23 includes first and second tape guides having long tape guide surfaces extending along the travel path of the magnetic tape 1 with the magnetic head 2 interposed therebetween, for example. In this example, the first and second dynamic pressure type tape guides 61 and 62 are disposed, and the first reel 21 is sandwiched between the first and second tapes 61 and 62 so as to extend along the traveling path of the magnetic tape 1. Third and fourth tape guides having a tape guide surface, in this example, third and fourth dynamic pressure type tape guides 63 and 64 are arranged.

The first to fourth dynamic pressure type tape guides 61 to 64 have a tape guide member 65 on which a curved surface convex toward the tape running surface side to be guided by these, for example, an arcuate tape guide surface 65S is formed. A flange 53 that is erected along the running surface of the magnetic tape 1 and regulates an edge portion on the reference edge 1SE side of the magnetic tape 1 on one side edge of each tape guide surface 65S is, for example, orthogonal to the guide surface 65S. It is formed by protruding.
The tape guide members 65 of the first to fourth dynamic pressure type tape guides 61 to 64 can be formed, for example, by dividing one circular ring body into four parts.

A columnar or cylindrical tape guide is arranged at each end of each of the dynamic pressure type tape guides 61 to 64. In the example shown in FIG. 1, first and second fixed guides 11 and 12 are arranged on the arrangement side of the magnetic head 2 of the first and second dynamic pressure type tape guides 61 and 62, respectively. Third and fourth fixed guides are arranged on the opposite side of the dynamic pressure type tape guides 61 and 62 from the magnetic head 2 side.
Further, additional tape guides 15 are disposed at both ends of the third and fourth dynamic pressure type tape guides 63 and 64.

The tape guide surface 65S has a gentle arc shape with a radius of curvature of 10 mm or more, air is taken in by the tape running, and the air layer taken in is between the guide surface 65 and the tape 1. It is formed uniformly over the entire area.
FIG. 3 is a diagram schematically showing the arrangement of the guides and the magnetic head in the traveling direction of the magnetic tape 1.

The magnetic tape 1 extends along the magnetic tape of the dynamic pressure type tape guides 61 to 64, that is, the magnetic tape 1 is slidably contacted at least when the magnetic tape 1 travels at a low speed over an area longer than a pin shape or a roller. A tape guide member 65 that forms a tape guide surface having a large sliding contact area with the magnetic tape, for example, a magnetic tape guide surface 65S, is placed in the nonmagnetic metal base material 70 as shown in a schematic sectional view in FIG. It is composed of a constituent material 72 in which high-hardness particles 71 having a hardness higher than that of the base material 70 are dispersed, and at least the surface forming the magnetic tape guide surface 65S is constituted by a surface that has been subjected to ultra-mirror finishing.
In this polishing, for example, the surface is made into an ultra-mirror finished surface with a Ra (arithmetic mean roughness) of 0.05 μm to 0.2 μm by a smooth bit with an infinite tip (infinity), a so-called Miracle bite (trade name). Accordingly, the high hardness particles 71 having a hardness higher than that of the metal base material are protruded with a protrusion amount h corresponding to the roughness.

The non-magnetic metal base material 70 has strength required as a tape guide, is lightweight, has excellent workability, and is inexpensive, such as Al or Al alloy, such as Fe, Mn, Zn, Cu, Mg, Ti, etc. An alloy containing 5% or less of at least one kind, or Ti or Ti alloy can be used.
Further, as the high hardness particles to be dispersed therein, Si compounds such as SiC, SiO ₂ , Si ₃ N _{4 and the} like can be used. Alternatively, it can be constituted by high-hardness particles used as so-called abrasive grains such as WC and Al ₂ O ₃ .

  As described above, the protruding amount h of the high hardness particles 71 from the surface of the metal base material 70 is 0.05 μm to 0.2 μm by the super-mirror finishing, as described above. In addition, if it is less than 0.05, the effect of reducing friction is insufficient, and if it exceeds 0.2 μm, the contact pressure of the magnetic tape at the protruding portion of the high-hardness particles is increased, and the magnetic tape may be damaged. This is due to the finding that

  Thus, although the high hardness particles 71 protrude from the surface of the metal base material, for example, the particle size is about 10 μm, and the protrusion amount h is about 0.05 μm to 0.2 μm. Embedded in the base material 70, the high hardness particles on the surface are also firmly held by the metal base material.

  When the mixing amount of the high hardness particles 71 in the metal base material 70 is selected from 10% by mass to 20% by mass, moderate friction control can be performed. As described above, when the amount is less than 10% by mass, the effect of reducing friction with the magnetic tape is thin. When the amount exceeds 20% by mass, the target tape guide is processed and manufactured, for example. This is because processing problems such as damage to the cutting tool occur.

FIGS. 5A to 5D show a case where a magnetic tape having a width of 1/2 inch is slid under the same conditions with a load of 1N and a tape traveling number of 200 times with respect to a tape sliding surface by a cylindrical surface having the same shape. The measurement result of the change of the friction coefficient μ is relatively shown.
FIG. 5A shows a magnetic tape slidably contacted with a cylindrical surface guide that has been surface-finished by the above-mentioned miracle bite using AHS (trade name, manufactured by Showa Denko) in which Si particles are dispersed in a metal base material made of an Al alloy. This is the case of running.

5B is the same material as FIG. 5A, but the surface is a guide by a cutting surface with a so-called R bite and the surface shape is a concave / convex pattern formed by a threaded cut with a height difference of about 0.5 μm. is there.
FIG. 5C is a case of a cylindrical guide having a surface finish using a miracle bite and a similar tape guide made of Al alloy A2219 (JIS standard material) not containing high hardness particles 71 such as Si particles. FIG. 5C shows the same material as that of FIG. 5C, but the surface of the surface is a guide formed by a cutting surface using a so-called R bite, and the surface shape forms a concavo-convex pattern formed by a threaded cut having a height difference of about 0.5 μm.

As can be seen by comparing these, FIG. 5A according to the present invention shows a change in the coefficient of friction as compared with the structure not including the super-mirror finish shown in FIGS. 5B to 5D and high hardness particles such as Si particles. It can be seen that there is a marked improvement.

  Therefore, as described above, for example, by configuring the tape guide member 65 of the above-described first to fourth dynamic pressure type tape guides 61 to 64 with the constituent member 72, the tape guide that can stably hold the low friction coefficient μ. The drive device according to this can effectively avoid tape damage and wear, and can extend the life of the tape.

The tape guide member 65 described above is obtained by molding the above-described component material 72 into a ring shape having a required shape, for example, a perfect circle shape or an ellipse shape, and processing the outer peripheral surface of the above-described super mirror surface and cutting the ring. For example, the tape guide member 65 of the first to fourth dynamic pressure type tape guides 61 to 64 described above is formed by dividing into four.
Or each tape guide member 65 is shape | molded in a required shape, these can be integrated by a jig | tool with a jig | tool, and the outer peripheral surface can also be comprised by carrying out the super mirror surface process mentioned above in this state.
And the flange 53 can be arrange | positioned by the joining etc. to the tape guide member 65 by the arbitrary processes after the super-mirror surface process mentioned above.

  As shown in the side view of FIG. 6A, the tape guide extending in the tape running direction, in this example, the first to fourth dynamic pressure type tape guides 61 to 64, has the tape guide surface 65S having the flange described above. It is tilted at a required angle Gθ with respect to the original axial direction so that the edge on the side opposite to the side where 53 is disposed protrudes from the magnetic tape.

Further, as shown in FIG. 6C, the flange 33 is disposed on the edge of the first to fourth fixed tape guides 11 to 14 and the additional tape guide 15 on the side corresponding to the reference edge 1SE of the magnetic tape 1.
The flanges 33 of the first to fourth fixed tape guides 11 to 14 and the additional tape guide 15 and the flanges 53 of the first to fourth dynamic pressure type tape guides 61 to 64 are each made of zirconia having a small friction coefficient. It can be constituted by a ceramic plate such as.

6B and 6C, the sliding surfaces of the magnetic head 2 with the tape running surface, the first to fourth fixed tape guides 11 to 14, and the additional tape guide 15 with the respective magnetic tapes 1 are provided. The required angles Gθ, Hθ, Tθ _{11 with} respect to the original axial direction, respectively, so that the edge side of the magnetic tape 1 opposite to the reference edge 1SE side protrudes toward the magnetic tape 1, respectively. Tilt with _{~ 15} .
As described above, in each tape guide, the magnetic tape 1 moves in the width direction toward the flange 53 by giving the respective inclinations Gθ, Hθ, Tθ ₁₁ to ₁₅ from the original axis. Power is made to occur.

The above-mentioned original axial direction is the same as the tape sliding contact surface of each of the tape guides 1 to 15 and 61 to 64 inclined and the traveling surface of the magnetic tape of the magnetic head over the entire width of the magnetic tape 1. The axial direction of the magnetic tape sliding contact surface and the magnetic tape running surface when contacting with such contact pressure is designated, and the above-mentioned angles Gθ, Tθ _{11 to 15 of the} tape guide and the magnetic head are designated. _, Hθ is selected.

These angles Gθ, Tθ _{11 to 15 and} Hθ all have a good working force in the width direction at 0.4 ° to 0.8 °, minimize the tape width direction variation LTM, and damage the tape edge. It was confirmed that there was no angle.

  In the drive device according to the present invention shown in FIG. 1, in the first to fourth tape guides extending in the tape running direction, in this example, in the dynamic pressure type tape guides 61 to 64, both ends are columnar or Cylindrical fixed guides 11 to 14 or additional guides 15 are arranged. In this case, as shown in FIG. 7A, these guides 11 to 14 and 15 are arranged at the end portions of the dynamic pressure type tape guides 61 to 64. It is desirable to arrange the tape 1 at a position where it can be pulled away from the tape guide surface 65S so that the gap e is generated so that the magnetic tape 1 does not contact the edges of the tape guides 61-64. .

  In this way, the magnetic tape 1 can be prevented from being damaged or the magnetic material of the magnetic tape from falling off when the magnetic tape 1 contacts the guide edges of the tape guides 61 to 64. It is.

  Further, as shown in FIG. 7B, similarly to the flange 53 of the dynamic pressure type tape guides 61 to 64, the magnetic tape 1 is similarly guided to the guide edges of the tape guides 61 to 64 by setting the required amount d (d> 0). The magnetic tape 1 can be prevented from coming into contact with the magnetic tape 1, thereby preventing the magnetic tape 1 from being damaged or causing the magnetic material of the magnetic tape to fall off as described above. It is.

  Further, the arrangement configuration of the tape guide is not limited to the example shown in FIG. 1. For example, as shown in FIG. 8, the dynamic pressure type tape guide 62 and, for example, the reel 21 are long and extend so as to surround the reel guide 21. A configuration in which a dynamic pressure type tape guide 63 is provided may also be employed. Also in this case, for example, by arranging and selecting the guides 11, 12, 14, and 15 in the figure, the magnetic tape 1 is pulled away from the edges of the tape guides 62 and 63 as described with reference to FIG. This is a place where contact with the edges of the dynamic pressure type tape guides 62 and 63 of the tape 1 is avoided.

In the example shown in FIG. 9, at the edge a of each of the dynamic pressure type tape guides 61 to 64, the tape 1 is formed as much as possible using the combination of the configuration of FIG. 7A and the configuration of FIG. This is a case where contact is avoided at a.
8 and FIG. 9, the same reference numerals are given to the portions corresponding to FIG.

In the drive device according to the present invention, as described above, the magnetic tape guide surface in which the magnetic tape 1 is slidably contacted over at least a long region as compared with the guide pin and the guide roller and the friction becomes a problem is a high hardness particle. For example, in a dynamic pressure type tape guide structure, the magnetic tape is in contact with the tape guide surface even in an unsteady running state in which the air is not entrained or difficult to be achieved. It is possible to avoid the wear of 1.
Therefore, in order to avoid this wear and tear, it is possible to avoid applying the air guide method and to avoid the equipment of the air pump, thereby simplifying the device, reducing the size, and reducing the cost.

  In the above-described example, the dynamic pressure type tape guide is arranged, in which the high hardness particles are dispersed, and this constitutes a protruding tape guide surface. The magnetic tape drive device having various configurations is not limited to the above-described example, such as a configuration in which high-hardness particles are dispersed in a tape guide not based on the pressure-type tape guide, and this can constitute a protruding tape guide surface. It goes without saying that it can be done.

1 is a schematic plan view of an example of a magnetic tape drive device according to the present invention. It is a plane pattern figure of an example of the magnetic tape which is drive-driven with the magnetic tape drive device by this invention. It is a figure which shows the arrangement row | line | column of a tape running direction of an example of the tape running guide means of the magnetic tape drive apparatus by this invention. It is a typical sectional view of a tape guide constituent material of a magnetic tape drive device by the present invention. FIG. A is a measurement curve diagram of changes in the number of tape runs and the friction coefficient according to the configuration constituting the tape guide surface in the apparatus of the present invention, and FIGS. B to D respectively constitute the tape guide surface compared with the present invention. It is a measurement curve figure of the frequency | count of tape driving | running | working and the change of a friction coefficient by the structure to perform. FIGS. 2A to 2C are explanatory views of the arrangement state of the tape guide, the magnetic head, the fixed tape guide, and the additional tape guide, respectively. FIGS. A and B are explanatory diagrams of the positional relationship between the tape guide edge extending in the running direction of the magnetic tape and the tape. It is a schematic plan view of the other example of this invention apparatus. It is a schematic plan view of the other example of this invention apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Magnetic tape, 1SE ... Standard edge, 11-14 ... 1st-4th fixed guide, 15 ... Additional tape guide, 21,22 ... 1st, 2nd reel 50 ... Magnetic tape guide means, 53 ... Flange, 61 to 64 ... First to fourth dynamic pressure type tape guides, 65 ... Tape guide member, 65S ... Tape guide surface, 70 ... Constituent material, 71 ... High hardness particles, 72 ... Constituent material, DB ... Data band, SB ... Servo band

Claims (8)

  The tape guide surface of the tape guide that travels and guides the magnetic tape has at least a large sliding contact area with the magnetic tape, and nonmagnetic high-hardness particles that are harder than the metal base material are dispersed in the non-magnetic metal base material. A magnetic surface characterized in that the surface thereof is an ultra-mirror finished surface, and the ends of the dispersed high-hardness particles protrude from the surface of the metal base material on the surface. Tape drive device.   2. The magnetic tape drive device according to claim 1, wherein a protruding amount of the high hardness particles from the surface of the metal base material is 0.05 μm to 0.2 μm.   2. The mixed amount of high hardness particles in a constituent material in which high hardness particles are dispersed in the metal base material is selected from 10% by mass to 20% by mass of the constituent material. The magnetic tape drive device described.   2. The magnetic tape drive device according to claim 1, wherein the metal base material is made of an Al alloy.   2. The magnetic tape drive device according to claim 1, wherein the high hardness particles are made of high hardness silicon compound particles.   A flange is provided at one end edge of the tape guide, and the tape guide surface of the tape guide is disposed so as to be inclined so that an end opposite to the side having the flange protrudes toward the magnetic tape side. The magnetic tape drive apparatus according to claim 1, wherein   2. The magnetic tape drive device according to claim 1, wherein the tape guide is a dynamic pressure type tape guide.   The magnetic guide according to claim 7, wherein the tape guide surface of the dynamic pressure type tape guide has a curved shape of a convex portion toward the tape running surface having a curvature radius of 10 mm or more along the tape running direction. Tape drive device.

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