JPS61222063A - Sliding contact device for information recording medium - Google Patents

Abstract

PURPOSE:To elevate durability and to prevent wear or damage of an information recording medium by providing a protective layer containing at least two kinds of nitrides among the nitrides of Si, Al and Ti at a prescribed position of a member slidingly contacted with the information recording medium. CONSTITUTION:On a confronting surface to the magnetic sheet 2 of a main body 4A of a pad 4 forming a main body of a sliding contact device for the information recording medium, the protective film 4B of extreme hardness and smooth surface consisting of a mixture containing at least two kinds of nitrides among the nitrides of Si, Al and Ti is formed. The protective film 4B is formed on the confronting surface to the sheet 2 o the pad 4 including the position of a groove 5 for tightly and slidably contacting, the sheet 2 with the magnetic head 3, so that the friction between the side edges 5a, 5b of the groove 5 is remarkably lowered. In such a manner the sliding contact state between the information recording medium and the member slidingly contacting with it is maintained at an optimum value, the wear caused to the sliding contact part is reduced, while the wear or damage to the information recording medium or agglutination of the sliding member is prevented.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a magnetic recording/reproducing device, etc., in which an information recording medium, such as a magnetic tape or a magnetic disk, is transferred in a predetermined state by sliding information onto the medium. The present invention relates to a recording medium sliding contact device.

[Conventional technology]

In recent years, sheet-like information recording media such as magnetic disks have been used in an extremely wide range of fields as media for recording (storing) various information. This type of sheet-like recording medium has a sufficiently thin thickness and therefore has high flexibility in the thickness direction. In order to perform recording and reproducing using such a highly flexible magnetic sheet, the magnetic head for recording and reproducing must be in stable sliding contact with the magnetic sheet during rotation, and the information recorded and reproduced must be kept in stable sliding contact with the magnetic sheet. must be busy to avoid noise or dropouts.

Due to its rigidity and the centrifugal force acting on each part, the magnetic sheet forms air files on both sides and rotates in a substantially horizontally extended state. However, simply pressing the magnetic head against the magnetic sheet causes the magnetic sheet to bend in the vertical direction, and therefore the chip portion of the Wi-type head cannot be brought into stable sliding contact with the magnetic sheet. Therefore, if the chip part of the magnetic head is supported by pads with a magnetic sheet in between, the chip part can be brought into sliding contact with the magnetic sheet by sandwiching the magnetic sheet between the chip part and the pad. can. However, if you press it against the chip on the surface of the pad, the pinching force will create a frictional force between the magnetic sheet, the chip, and the pad, making it difficult to rotate the magnetic sheet smoothly. Become.

For this reason, an information recording medium sliding contact device IT (here applied to a magnetic recording/reproducing device) having a configuration as shown in FIGS. 11 and 12 has been proposed. In FIG. 11, the magnetic sheet 2 mounted on the rotating flange 1 is rotated in the direction indicated by an arrow A by a drive motor (not shown). The information recording surface of the magnetic sheet 2 is
A reproducing magnetic head 3 is provided. The magnetic head 3 is movable along the radial direction of the magnetic sheet 2, which is indicated by an imaginary line. A pad 4 is provided to sandwich the magnetic head 3K and the magnetic sheet 2 so as to face each other.

On the lower surface of this pad 4, as shown in an enlarged view in FIG. 12, a sliding groove 5 having a substantially semicircular cross section is provided with its longitudinal direction extending along the imaginary line t. . Therefore, when the magnetic sheet 2 rotates, the magnetic head 3 is moved to the magnetic sheet 2.
When the chip part 3A is inserted into the sliding groove 5 without contacting the information recording surface of the magnetic sheet 2, the chip part 3A is always in sliding contact with the information recording surface of the magnetic sheet 2 (15). Therefore, while the magnetic head 3 partially bends the magnetic sheet 2, the sliding contact groove 5
When the magnetic sheet 2 is inserted into the inside, the magnetic sheet 2 comes into contact with the tip portion 3AK of the magnetic head 3 due to the deformation stress of the air sheet itself.
Since the magnetic head 3 travels in the space between the inner surface of the magnetic head 3 and the pad 4, it is not pinched between the magnetic head 3 and the pad 4.

By the way, when the magnetic sheet 2 is partially pushed into the sliding contact groove 5 by the magnetic head 3, the magnetic sheet 2 moves toward the tip of the magnetic head 3 using the positions of both edges 5m and 5b of the groove 5 as fulcrums. Since the whitened portion 2a of the magnetic sheet 2 is whitened with a relatively small curvature,
The deformation stress gradually increases in the direction toward the tip portion 3A at the tip of the magnetic head 3. Therefore, by adjusting the depth at which the magnetic head 3 fits into the groove 5, the iB magnetic sheet and the tip portion 3A The sliding contact condition can be made sufficiently smooth for practical use.

In addition to the above-mentioned information recording medium sliding contact device, these nine suitable information recording media (in this case, a small magnetic disk sliding contact device is used in electronic cameras, etc., which are being developed in recent years) This type of device has a regulating plate and a guide plate at a predetermined portion of the magnetic disk to maintain proper sliding contact between the magnetic head and the magnetic disk when recording and reproducing image information. Conventionally, these regulating plates and guide plates are made of metal such as stainless steel, and the surfaces facing the magnetic disk are well finished, and when the magnetic disk is driven to rotate, these plates are made of metal such as stainless steel. An air layer is formed between the surface and the magnetic disk.In such a configuration, the temperature at which the magnetic disk is regulated increases when the magnetic disk starts rotating, starts rotating, or rotates at low speed. Since it comes into sliding contact with the plate or the guide plate, it is necessary to avoid damage to the magnetic disk due to this sliding contact and abrasion of the regulating plate or the guide plate.

In order to solve this problem, for example,
Japanese Patent No. 758 discloses a proposal to provide a buffer member such as a non-woven fabric on each of the magnetic disk facing surfaces of a regulating plate and a guide plate.

The information recording medium sliding contact device is compatible with the above-mentioned 5 sheet-shaped magnetic recording media (such as large disks), as well as tape-shaped information recording media, that is, for example, video tape recorders. (hereinafter abbreviated as VTR), various types of medium sliding contact devices have been developed (and are becoming widespread).An example of this type of information recording medium sliding contact device is the so-called 8 ta VTR. There is a type of magnetic tape that can be applied to this 8W VTR. Metal tape or vapor-deposited tape is used. Among these, when metal tape is applied, magnetic tape (
(hereinafter simply referred to as tape)
If the configuration is similar to that adopted in R (°C), the metal tape will cause significant wear on various parts of the tape running system.

Furthermore, when the film is applied to a deposition curve with a thin film and relatively low mechanical strength, various other problems arise. In other words, if the tape running system is constructed in the same manner as before (for example, using a fixed post made of stainless steel or a rotating drum made of aluminum, and setting the tape wrapping angle to 210' with respect to the rotating drum of φ = 40fl), the tape will be fixed. This may cause the tape to stick to the surface of the post or rotating drum, or increase the coefficient of friction between the tape and the surface of the fixed post or rotating drum, causing uneven tape running speed and, as a result, deteriorating the reproduced image. This is especially noticeable when the device is used in a humid atmosphere.This kind of problem in a humid atmosphere is a general problem with VTRs.
It is also disclosed in the publication No. 1, and a tentative solution is also shown. This is listed in Table tM of tape running system members as higher fatty acids such as stearic acid, higher fatty acid salts such as zinc stearate, higher fatty acid amides such as stearic acid amide, and reactive organic amides such as silane coupling agent 9. As titanium, for example, a substance such as organic Nisdel titanate is dissolved in a solvent,
After the above-mentioned member is immersed in a treatment liquid adjusted to a concentration of about 1 weight, a thin film layer made of the above-mentioned substance is formed on the surface of the above-mentioned member by drying it with high-speed hot air, so that the above-mentioned member has water repellency. It is something to do.

[Problem that the invention seeks to solve]

In the conventional information recording medium sliding contact device as described above, the former example, that is, the sheet-like magnetic recording medium described using FIG. As it rotates, the magnetic sheet is not only damaged or worn out due to the friction at both edges 5m and 5b of the groove 50 (gJZ diagram), but also the above-mentioned two edges 5m and 5b are also worn out. Become.

Further, in the example of the electronic camera described above, there is a risk that the regulating plate and the guide plate will wear out due to friction with the magnetic disk, and at the same time, the magnetic disk will be damaged. lol Kaikai 58-72758
Even if a cushioning member made of nonwoven fabric or the like is provided as disclosed in the above publication, the durability is poor and the life of the device is extremely limited.

Furthermore, among conventional information recording medium sliding contact devices, the latter example mentioned above, that is, the type to which VTFtK is applied, is made of higher fatty acids as disclosed in Japanese Patent Application Laid-Open No. 58-98868. Even if a thin film layer is provided on the surface of a tape sliding member in a magnetic tape running system, it cannot withstand tape running for a long time. Such a thin film layer wears out in a relatively short period of time, and eventually the wear of the running system itself progresses due to friction between the magnetic tape and various parts of the tape running system, including fixed posts and rotating drums, and the tape wears out. There is a risk of sticking to the running system or damage to the tape.

The present invention has been made in view of the problems in the conventional information recording medium sliding contact device as described above, and it is possible to maintain a proper sliding contact state between an information recording medium and a member slidingly contacting the same at all times. It is an object of the present invention to provide a device of this type in which the members themselves have little wear (excellent durability) and there is no risk that the information recording medium will suffer wear or damage or stick to sliding members.

[Means for solving problems]

In order to achieve the above object, the present invention includes Si in a predetermined portion of a member 2000 that comes into sliding contact with an information recording medium 1000, as shown in FIG. 1 showing the concept of the invention.

It is configured to include a protective film 2100 made of a hybrid material containing at least two types of nitrides of AI and Ti.

[Effect]

In the information recording medium sliding contact device of the present invention, the information recording medium 10
At a predetermined portion of member 20000 that comes into sliding contact with 00.

Since the information recording medium [000] is provided with a protective film 2100 that is extremely hard and has a smooth surface and is made of a composite material containing at least two types of nitrides of 8i, AI, and Ti, the information recording medium [000] is a member. 2000 (directly with protective film 2100
) There is extremely little friction when it comes into sliding contact. Therefore, member 20
00 itself is less likely to wear out and is highly durable, and the risk of the information recording medium 1000 being worn or damaged or the member 2000VC being stuck can be effectively avoided.

〔Example〕

(iWI example) First, a first embodiment of the present invention will be described in detail below.

FIG. 2 is a sectional view showing a t# information recording medium sliding contact device as a first embodiment of the present invention, and FIG. 3 is an enlarged view of the main part of the device shown in FIG. The planar shape of this device is exactly the same as the conventional device described using FIGS. 11 and 12.

In FIGS. 2 and 3, parts corresponding to those in FIGS. 11 and 12 are designated by the same reference numerals, and a detailed explanation thereof will be omitted. In the figure, the surface of the main body 4A of the band 40 that forms the main body of the information recording medium sliding contact device (the lower surface in the figure) facing the magnetic sheet 2 is coated with at least two types of nitrides of Si, AI, and Ti. An extremely hard and smooth protective film 4B made of a hybrid material containing nitride is formed (in this example, over almost the entire surface).

That is, as can be easily understood especially in FIG. 3, the pad 4 is attached to the magnetic sheet 2, including the groove 5 for closely layering and slidingly contacting the magnetic sheet 2t as an information recording medium with the magnetic head 3. A protective film 4B as described above (
The thickness is, for example, about 1 μm), so that both edges 5a of the groove 5 where the pad 4 and the magnetic groove 2 are in sliding contact are formed.
, 5b is significantly reduced.

A case where the surface of the pad main body 4A made of aluminum material is coated with the above-mentioned protective film 4B, and a case where the protective film 4B is coated with the above-mentioned protective film 4B.
Regarding the case where B is not coded, magnetic sheet 2
When testing the friction coefficient μ at the sliding contact part with
Measurement results as shown in Figures 4 (A) and (B) are obtained. In Fig. 4 (Al, (B)), the horizontal axis shows the time axis, and the vertical axis shows the friction coefficient μ. Comparing Fig. 4 (A) and Fig. 4 (B), It is clear that the friction coefficient μ is smaller in the case of the present invention coated with the protective film shown in FIG. 4(A).

As described above, in the device of this embodiment, the friction at the sliding contact portion of the pad 4 with the magnetic sheet 2 is extremely small, so that there is little wear on the sliding contact portion. Further, the above-mentioned protective film is not only hard and has a smooth surface, but also has high corrosion resistance, so that the life of the device is extremely long. - Since there is less friction, there is less wear and tear on the information recording medium (and the running speed can be easily maintained at a desired steady speed).

(Second Actual Woven Example) Next, a second example of the present invention will be described. This lE2*
Example m is an example in which the device of the present invention is applied to an electronic camera.

Fig. 5 Fig. 6 shows the 5 causes of the structure of the second embodiment of the present invention,
In FIG. 6, a disk-shaped magnetic disk 101 for recording image information is chucked onto a rotating shaft 104 of a magnetic disk drive motor 103 mounted on a base 102, and formed into a shag 105 having a substantially square planar shape. It is kept in a stored state. The magnetic disk 101 also has a guide shaft 106. A magnetic head 108 supported by a feed screw 107 via a holder 108a is in contact with it. This magnetic head 10g is for recording on the magnetic disk 101 an image signal obtained based on a signal obtained by photoelectrically converting an image by an optical system (not shown).

The guide shaft 106 passes through a guide hole of the magnetic head 108, and both ends thereof are fixed to the base body 102. In other words, the magnetic head 108 is movable in the longitudinal direction of the guide shaft 106 while slidingly contacting the magnetic disk 101. Further, one end of the lead screw 107 is rotatably supported by the base body 102, and the other end is directly connected to the shaft 110 of the stepping motor 109 for head feeding.

The presser foot 7-mu 111 has a portion 4it fixed on the base body 102.
It is rotatably supported by a support shaft 113 with respect to l12. A tension spring 114 is placed between the upper gripping arm 111 and the member 112, and urges the upper gripping arm 111 to rotate counterclockwise about the support shaft 113. Note that the rotationally energized upper gripping arm 111 comes into contact with the column 115 erected on the base body 102 at its tip, so that its position is maintained. The upper gripping arm 111 holds the shag 105 in place, and also holds the regulating plate 116 at a position facing the magnetic head 108. - A guide plate 117 is provided on the base 102 so as to surround the magnetic head 108. In this embodiment, the above-mentioned regulation plate 116 forming the information recording medium sliding contact device is
And the material of the base material of the guide plate 117 is an aluminum alloy (
JIS NO.

A2219). At least the surface of the base material of the regulating plate 116 or guide plate 117 facing the magnetic disk 10IK is made of nitrides of St, AI, and Ti, as in the first embodiment. Extremely hard and smooth protective films 118 and 119 made of a hybrid material containing at least two types of nitrides are respectively formed.

As described above, according to this embodiment, the above-mentioned protective films 118 and 119 are formed on at least the surface of the regulating plate 116 and/or the internal change plate 117 facing the magnetic disk 101. The facing surface (sliding surface) of the guide plate 117 to the magnetic disk 101 is extremely smooth, and even if the magnetic tension plate 101 contacts the regulating plate 116 or the guide plate 117, the friction is sufficiently small to prevent the magnetic disk 101 from moving normally. Does not interfere with rotation. Also,
There is no risk of scratches or wear on the magnetic tape 101. There is also no risk of scratches or wear on the regulating plate 116 or guide plate 117 themselves. There is no possibility that the magnetic disk 101 will be scratched due to scratches on the guide plate 116 or the guide plate 117.

Furthermore, as described in the first embodiment, the protective film as described above has high corrosion resistance, so that the life of the device is long.

(Third Embodiment) Furthermore, a wE3 embodiment of the present invention will be described. The third embodiment is an example in which the information recording medium sliding contact device of the present invention is applied to a VTR.

Figure f1g7 is a system diagram showing a Dave running system of a VTR to which the third embodiment of the present invention is applied. In FIG. 97, the tape 210 comes out from the supply reel 212 in the cassette 211 and takes the following path.

Cassette inner post 213 → Cassette inner post 214 → Densoyon post 215 → Rotating p-ra 216 → Inclined post 217 → Rotating p-ra 218 → Deep reader 219 → Full width erasing head 220 → Deep guide 221 → Drum 22
2 → Inclined post 223 → Audio erasing head 224 →
Audio control head 225 → post 226 →
Capstan 227 and pinch roller 228 → Inner cassette post 229 → Inner cassette post 230° Tape 2
10 reaches the take-up reel 231 via the above-described route.

FIGS. 8(A) and 8(B) are a plan view and a side view of the drum 222. The drum 222 is separated from an upper drum (a rotating drum in this embodiment) 241 and a lower drum 242 (a fixed drum in this embodiment). A shaft 71-243 is fixed to the upper drum 241,
The upper drum 241 is adapted to rotate together with the shaft 243. Further, a pair of magnetic heads 244 and 245 are provided on the drum 241 at 1806 different positions as shown in the figure.The magnetic heads 244 and 245 are two heads in this embodiment, but there are four heads. A tape guide 246 is provided on the lower drum 242, and a magnetic tape (not shown) runs along this tape guide 246.In this embodiment, the drum 222 whose base material is stainless steel and the tension At least the outer R surface of the post 215 or the inclined post 217, 223, on which the tape slides, is made of at least 8i, AI, or TI nitride, similar to that described for the first or second embodiment. An extremely hard protective film with a smooth surface is formed using an oil mixture containing two types of nitrides. Figure 9 (A) shows how such a protective film is formed on the drum and tension post. , shown in (B).Figure 9(A)
is an enlarged cross-sectional view of the upper drum 2410F shown in FIG. 8(A). As clearly understood from the figure, the base material 241 of the upper drum 241 is made of stainless steel in this example.
A protective film 241B as described above is formed on the outer peripheral surface of A. It should be noted that the lower drum 242 shown in FIG. 8(B) is also entirely covered with a protective film (similarly, a protective film is formed thereon.
FIG. As shown in the figure, a protective film 215B as described above is formed on the outer peripheral surface of the base material 215A of the tension post 215 made of stainless steel. Incidentally, it is recommended that the inclined posts 217, 223, etc. shown in FIG.

In this way, in this example.

As mentioned above, a protective film with an extremely hard and smooth surface is provided on the sliding contact area of each member on which the tape comes into sliding contact, so even if the wrapping angle of the tape around these members is large, the periphery of the member in question will not be covered. The coefficient of friction in
Abrasion of both these members and the tape is extremely small (for example, when winding the tape around the drum 222, the corners are
It will be about 10'. Therefore, in the conventional system, the frictional resistance during traveling on the circumference of the drum or the drum wR
The static friction force between the 11ilr and the tape surface became extremely large, causing problems such as uneven tape running speed and significant wear on both the drum and tape, but these problems have been eliminated by the present invention. For example, the sum of the tape wrapping angles around the inclined posts 217 and 223 is about 100.
Although the problem is similar to the above-mentioned problem regarding friction between the shoulder surface of the post and the tape surface, it is completely solved.

Figure g10 is a system diagram showing a measurement system for measuring the coefficient of friction in a tape running system to which the IE3 embodiment of the present invention is applied.

In FIG. 1O, a magnetic tape 300 is placed on a supply reel 3
01 → Fixed post 302 → Guide p-ra 303 → Fixed post 304 → Tension analyzer post 305 → Sample (drum or post) 400 → Number analyzer post 306 → Fixed post 307 → Capstan 308
and the pinch roller 309 → the guide e-ra 310 → the fixed boss) 311 → the take-up reel 312. Tension analyzers 321 and 322 having tension r-ges are connected to the tension analyzer posts 305 and 306, respectively, and signal conversion circuits 331 and 332 are connected to these tension analyzers 321 and 322, respectively. The output of each signal conversion circuit 331, 332 is input to an arithmetic circuit 340. Each of the tension analyzer posts 305 and 306 can be made wider or narrower (
This allows sample 4 to change.
The corner of the 3000 wraps of tape for 00 can be changed. Sample 40 was measured using the measurement system shown in Fig. 1θ.
To measure the friction coefficient μ of 0, rotate the capstan 308 and connect the capstan 308 with the pinch roller 3.
The tape 300 held by the sample 400 is run at a predetermined image resolution, and the tension TI of the tape facing the sample 400 is detected by the tension analyzer 321.
The tension analyzer 322 detects the tension T2 of the tape on the side that is farther away.
31, 332 and an arithmetic circuit 340, the following calculation is performed: p=1 n(T2/TI)/θ (θ is the angle of tape winding) to determine the value of the friction coefficient μ. When measuring the friction coefficient μ under predetermined temperature and humidity conditions, the measurement system shown in FIG. 1O is placed in a constant temperature and humidity bath.

When the value of the friction coefficient μ of the 7-ply running system of this device was determined using the above measurement system, the friction coefficient μ was 0.2 to 0.3.
It became clear that the extent of the damage was extremely small.

In addition, in the present invention, the protective film provided on the surface of each part where the tape makes sliding contact has superior abrasion resistance compared to the metals conventionally used for such sliding contact parts, so that the surface wear and deterioration can be prevented. cannot be seen. Therefore, no damage is caused to the magnetic tape itself.

According to the present invention, as explained in the [Prior Art] section, a type of tape that is thin and easily sticks to the tape running system, such as a vapor-deposited tape, is applied to 8W V T B where the tape running conditions are severe. Even in such cases, sticking does not occur, the friction coefficient of the tape running system is small, and good running characteristics are ensured. Also, regardless of the type of tape applied,
Because there is little friction in the tape running system, there is little wear on the tape (and there is also very little wear on the tape running system itself.Furthermore, the tape does not stick even in a humid atmosphere, and the friction coefficient of the tape running system is low. A small ideal state is maintained.

In the first to third embodiments described above, the case where a magnetic recording medium is applied as the information recording medium has been explained, but it is also possible to use a semiconductor storage medium or an optical storage medium such as an optical tape as the ephemeral medium. Of course, the present invention can also be applied to the apparatus used.

(Overview of protective film type arrangement) In the present invention, an outline of the method for forming the above-mentioned protective film formed on the outer surface of the member with which the information recording medium comes into sliding contact will be described below.

The above-mentioned protective film in the present invention is, for example, amorphous AI
N-TiN thin film or amorphous SimNn-TiN
It is a thin film. The process of forming these films on the media sliding surface of members such as pads, regulating plates, guide plates, etc. is based on RF technology.
Performed using a (high frequency) sputtering device. First, the inside of the vacuum chamber (chamber) of the sputtering device was cleaned using an oil rotary pump (RP pump) and a cryopump.
After exhausting the air to a temperature below Torr, a film is deposited on a predetermined surface of the base material of the sliding contact member to a thickness of about 0.5 to 1 μm by sputtering.Specific sputtering conditions include: ■ Amorphous In the case of AIN-TiN thin film formation: Small (5H x 5.XIU thick) Tl pellets are evenly arranged on the AI target at an ik area ratio of 1:1.

2. Inside the sputtering equipment chamber. OX 10'Tor
Evacuate and air with a cryopump or the like until the temperature reaches r or less to form a clean vacuum. Next, Ar and N2 gas l:l
Reactive sputtering is performed at an input power of 100 W (up to a level of about 1'O-'' Torr). Through such a process, an amorphous film of AIN-TiN is obtained.

■ For amorphous Si3N4-TiN thin film formation: St
Small (5 x 5 x 1 m) TI on wafer
The pellets are evenly distributed in an area ratio of 1:1.

Following the same process as in (2), an amorphous film of 81sNn TiN is obtained.

〔Effect of the invention〕

As described above, according to the device of the present invention, the sliding contact state between the information recording medium and the member that slides thereon is always maintained properly, and the wear of the borrowed member itself is small (excellent in durability, and the information recording medium There is no risk of the material being worn or damaged or sticking to the sliding contact member.

[Brief explanation of drawings]

Fig. wE1 is a conceptual diagram of the present invention, Fig. 2 is a sectional view showing the device of the first embodiment of the present invention, Fig. 3 is an enlarged view of the main part of the device in Fig. 2, Fig. g4 (A), (B ) is a diagram used to explain the effect of the device shown in FIG. 2, and FIG. 5 is a diagram showing the 351! Fig. 8 is a system diagram showing the tape running system of a VTR applied as an example.
A) and (B) are the plan view and side view of the drum in Figure 7, respectively, Figure #E9 (A) is an enlarged cross-sectional view of the main part of the drum of N, Figure 9+8 is the drum in Figure 7. An enlarged cross-sectional view of the tension post in the figure, FIG. 10 is a system diagram showing a measurement system for measuring the coefficient of friction in a tape running system to which the third embodiment of the present invention is applied, and FIGS. 11 and 12. 1 is a diagram showing a conventional information recording medium sliding contact device (applied to an a-air recording/reproducing device). 1000・・・・・・・・・・・・・・・・・・
...Information recording medium 2000...
・・・・・・・・・・・・・・・Member 2100 with which the medium comes into sliding contact・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・Protective film 2 ・・・・・・・・・・・・
・・・・・・・・・・・・・Magnetic sheet 4 ・・・・
−・・−・・・・・・・−・・・・・・− Pad 4B
・・・－・・・・・・・・・・・・・・・・・・・・・
・Protective film 101・・・・・・・・・・・・・・・・・・
......Magnetic disk 116...
・・・・・・・・・・・・・・・・・・Regulation plate 117・
・・・－・・・・・・・・・・・・・・・・・・・・・
Guide plate 118, 119......Protective film 210...--...
・Tape 215・・・・・・・・・・・・・・・・・・
・・・・・・・・・Tension post 217.223・
・・・・・・・・・・Incline post 222・・・・・・
・−・・・−・・・・・・・・・・・・Drum 241
・・・・・・・・・・・・・・・・・・・・・・・・
... Upper drum 215B, 241B...Protective film Fig. 1 200o Sliding contact member Fig. 2 Fig. 6 Fig. 4 ψ/N◆liN/AFj
”All Figure 5 +03 Figure 6 Figure 7 Figure 8 Figure 10

Claims (1)

[Claims] Si, Al,
An information recording medium sliding contact device comprising a protective film made of a composite material containing at least two types of nitrides of Ti.