JPS5845639A - Manufacture for reproducing stylus detecting change in static capacitance value - Google Patents

Abstract

PURPOSE:To selectively form an electrode section made of carbon of a diamond on a plane scheduled to form the electrode, by irradiating energy rays such as laser light on the plane for a reproducing stylus main body. CONSTITUTION:A raw member S of a reproducing stylus main body processed to an external shape of reproducing stylus is prepared, and a plane 10 scheduled for electrode forming is arranged to be orthogonal to the irradiating direction E of a laser light. One shot of laser light is irradiated on the plane 10 of the member S under an atmospheric environment. Thus, the plane 10 only is heated, the carbon of diamond for the part is changed into a conductive layer to form an electrode representing a low electric resistance value.

Description

[Detailed description of the invention] An information recording medium disc (=/f Scrub) and a) Slide the reproduction button of the reproduction element r (big γ horn) on the recording trace,
Information in the record trace + 1φ belief θ] condition ◇ According to 14, 'C occurs ffp electricity i1'i - change in candy, change in air, regret, and by detecting the change, KayA rises (in The information signal recorded at the density is set to 111 to 5/-1) Change detection type information of electrostatic capacity
-) i-formula (1) The information signal in the recorded trace is transferred to the screen by the electrode installed on the playback button.
Since this is done by detecting changes in the electric current, there is a long recording trace of the length of the bit that corresponds to the information transmission method. t on the extending force surface; tJ (the size of the bit)
℃ can be made sufficiently small - (Resolution can be increased, and the rotation speed of C1 tee 4 can be lowered.) In addition, for example, the information signals recorded on the TISF are read out optically.
Research on its practical application has been promoted because of the fact that the construction of the Heigo system is simplified because no strings are required, and there are many other advantages.

7], the information signal is recorded at a high density on the disk (3r), the recording trace interval (track pitch) is small, and the recording wavelength on the disk surface is extremely short. Sanero regeneration taroma used for reading information signals from Tisfu, Tisfu surface-1]
7. Dimensions less than 1/2 of the self-recorded wavelength; (The electrode thickness and the predetermined electrode d) are made to appear on the sliding contact surface and have a hanging electrode part. In a typical reproducing example, the electrode portion is formed of a conductive material on the electrode forming surface of the reproducing main body.

In the reproduction example, the sliding surface is in sliding contact with the high-speed rotating tisf surface, and the tli appearing on the sliding surface is
Since the extreme part operates to detect the information recorded on the tisf as a change in the electrostatic response value, the electrode part is provided on the electrode forming surface of the regenerating needle main body. If the film made of the 4'K14 material is not firmly attached to the electrode forming surface, the electric force applied to the end of the electrode that is in sliding contact with the rotating surface at high speed will cause the electric current to The 11th raw sword was separated from the main body!', and the f was unusable.

For this reason, it has been common practice to use a conductive material such as the one shown in the previous book, which is in good condition, to form the electrode part on the 11-length material of the RLR 41 body. For example, use a metal that has good adhesion to the i6 tire, such as 7j L, or half-conium, to form the electrode part on the main body of the regenerating side of the tie-1-T. However, even with this, it was difficult to obtain sufficient /fk performance on the playback side.

Therefore, the applicant's company first treated the regenerated needle body made of 1,000 tons of tires at high temperature in a vacuum containing a trace amount of oxygen and in an inert nonosus containing a trace amount of oxygen. A conductive layer made of the carbon of the tire itself is formed on the surface of the regenerated needle main body, and the conductive layer on the electrode formation surface of the regenerated main body on which the conductive layer is formed becomes an electrode. We provide a method for manufacturing the recycled side, and by implementing it, we provide a method for manufacturing the recycled side by processing the recycled sample into a predetermined external shape in the state where it is left behind. It made it possible to obtain the needle easily.

However, in the previously proposed method for manufacturing raw sensitizers, a conductive layer made of the carbon of the tire itself is formed on the entire surface of the reproducing main body made of tires. After forming the conductive layer, remove the conductive layer in areas other than the electrode part by polishing or other means (7). Otherwise, it was necessary to heat the entire regeneration side body to a high temperature when forming the conductive layer of carbon on the tire itself, so The problem was that, for example, it was not possible to use a structure in which a metal rod such as a titanium rod was used as the base, and a minute piece of tire metal was fixed to the tip of the metal rod using silver bonding. .

That is, when a conductive layer made of the carbon of the tire itself is formed on the surface of the tie, the part where the conductive layer is formed is as follows: Because the crystal structure has changed, it becomes brittle, and the polishing process is applied to that part. In order to obtain an electrode part with a predetermined shape and a predetermined electrode 1+ by polishing, the two surfaces (back surfaces) adjacent to the electrode part should be formed. The polishing process on the two back surfaces is performed in a polishing direction that does not cause any chipping on the ridgeline of the electrode part (polishing process performed on the two back faces to form the electrode part of a predetermined shape). The abrasive grains used in the polishing process flow from the back side to the electrode side, and are released at the electrode side.)
Low work efficiency is also a problem because it needs to be done carefully.

In addition, the material for recycled needles is made by welding tiny pieces of tire mondo, such as natural tire scrap tyre mondo or artificial tire send, to the tip of a metal rod such as a titanium rod using a steel machine. However, when the steel is heated to a high temperature, it melts and the tire piece separates from the metal rod. It cannot be used in the production method of V Koyoru's 11th student sword.

The present invention is free from the above-mentioned problems that have arisen with previously proposed recycled needle manufacturing methods. DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the method for manufacturing a capacitance change detection type regeneration needle according to the present invention will be described in detail with reference to the accompanying drawings.

Figures 1 (a) to (1) are plan views illustrating the shapes of various fields of the four sliding contact surfaces in the completed capacitance value change detection type 1 engineer sword. In Figures (a) to (b), 1 is the sliding surface, and Figure 1 (a) to ()])
In the figure, the part 2 in the outline of the sliding contact surface 1 shown in "C" is formed on the electrode formation surface of the material of the recycled needle body. This is the ridgeline of the sliding contact surface. In addition, 3 and 4 on the sliding contact surface 1 shown in FIG. , l, is the ridgeline of the sliding surface, which is represented by the intersection line of the back surface formed in the 11th sword body and the sliding surface 1, and furthermore, as shown in Figure 1 (a) Figure 5.6 is the ridge line of the sliding surface formed on the raw material of the regenerated needle body, which is represented by the line of intersection with the sliding surface 1 of the introduction surface.

Next, on the sliding surface I shown in FIG. 1(b), in order to form an electrode part with the required shape and size of the 7th and 8th ridges on the material of the birthing fly body, both 4111 of the electrode part are made. The ridgeline of the sliding surface, which is represented by the intersection line between the back surface and the sliding surface 1, formed on the element H of the regenerated needle body by the 01 calendar processing, is shown in FIG. 1(b). Since the IJ has a sliding contact surface 1 shaped like .
, 8 can be expressed as the intersection line between the two introduction surfaces and the sliding surface 1 in the material of the recycled needle body, and can also be said to be two lines. The shape of the sliding contact surface is the same as that of a regeneration needle that detects changes in capacitance value.
This is only a representative example of the regeneration needle that detects changes in capacitance value. Of course, it is possible to make a surface, for example, a circular, oval, or other arbitrary shaped sliding surface.

A regenerated needle main body (for example, a regenerated needle body (1) having a sliding contact surface 1 having a shape as shown in FIG. 1(a) and FIG.
It can be obtained by polishing the tip of the raw material S of the regenerated needle body having the 3L curved outer shape shown in Figure VC in Figure VC. A regenerated needle body having a sliding contact surface 1 having a shape as shown in FIG. It can be obtained by applying a polishing process to the tip of S element 4' and A.

2(a) and 2(bi) respectively, the two rear surfaces II and 11 adjacent to each other on both sides of the surface 10 where electrodes are to be formed are shown in FIG. (The back surface 11 adjacent to the left of the electrode formation surface 10 is not shown) and the two insertion surfaces 12.12 + one introduction surface, i.e., the left side in the figure. The introduction surface 12 is not shown.In addition, the introduction surface 12.12 in the material of the regenerated needle main body shown in FIG. In addition, the I4f4 engineer's sword element 'AAS shown in FIG.
4 is fixed to a welding agent, such as a steel machine 15, by polishing it to form the electrode formation surface 10, the two back surfaces II and 11, and the two introduction surfaces 12. (The figure shows one introduction surface, the left introduction surface 1 in the figure.)
2 is not shown). The material S of the recycled needle body shown in FIG. 2(c) is an example in which the metal rod forming the base thereof is a round rod, but the metal rod may also be a square rod. be.

In the capacitance value change detection type regeneration needle, the 1L cap to be formed on the electrode formation surface 10 is made such that the electrode rlJ is, for example, 1 μm or less. In this case, at least the part of the sliding surface of the regenerated needle and the part of the '71-pole acid forming surface are
1.A1 is composed of 1,000 tire parts.
The shape is completed and the shape is completed.
■ The inner shape that has been added in advance so that it has the same external shape as the raw button, or only the sliding surface is not formed. Prepare the cable AAS of the 91 body, place the above-mentioned regenerated needle body element + t s in an atmosphere containing oxygen, and prepare the above-mentioned I1111 main body. , Then, from the 1st side, that is, from the direction perpendicular to the electrode formation surface 10 on the ridge S of the body of Yamagyusen, the electrode formation on the electrode formation surface 10 is performed by irradiating energy beams. Partage VLC
, a conductive layer (ζ61:
2. In Figure 2 (a) to (C), the arrows 1 or Chills depending on the irradiation direction.

When the A-ray is irradiated with +4i raw button body in an atmosphere containing oxygen, it is VC1 irradiated. A-A
Planned electrode formation in S The portion of nrr + o θ) IA7 for which the ear anode is made conductive. degree, -4/
fwa +) + 00 (heated to a temperature of 1℃ or higher) 5ro,
1, U/j J knee: + radiation is used, and the result of the experiment is (4) 1, Zunawa +1,
(According to Kui ＼・(il in the atmosphere, 611
In a vacuum containing industrial oxygen (e.g. 3
In an oxygen-containing atmosphere such as rr~2(1(l
However, if the heating is done in the air at a temperature of 0°C or higher, the surface of the A. If the heating is carried out in an atmosphere containing However, the electrical resistance of the surface of Kui A-Mont (:1' decrease is not observed) (C anti-1~, when the tire is 1,000 liters I in the atmosphere,
Or in a vacuum containing a trace amount of oxygen (for example, No. 3
(In an atmosphere containing oxygen such as 2 Torr to 2+1 (in a vacuum of IXIO-2 Torr),
When heated to over 000°C, the surface becomes rough and the electrical resistance on the surface of the surface becomes rough. Oil A for reading information signals from Tisfu "The electric resistance in the electrical part has decreased to the level of electric resistance, and
The heating was carried out in an atmosphere containing a trace amount of oxygen.
It was observed that a conductive layer with a smooth surface and a significantly reduced surface resistance was formed in Q.

An example embodiment of the method for producing +Q production plan 1 of the present invention is as follows. First, adjust the various shapes shown in Figures 2 (a) to (C) by pressing the play button body θ.
] In other words, once the sliding surface is formed, the outer shape is the same as that of the completed regenerated needle. Prepare the main body S, place it so that the electrode formation surface 10 is perpendicular to the irradiation direction E of the laser beam, and then prepare the regenerated needle main body. The part of the regenerating needle S that is the placement fang 1 is exposed to soil in an atmospheric atmosphere, and the wavelength of the regenerated needle main body is set to 1. 0 (i Itm Nd:YA
G l/-1)- and the diameter is l (area of 10ltm vc
71 shots of Rayleigh light having 100 milliseconds and 200 milliseconds are irradiated for 20 nanoseconds.

In other words, as mentioned above, the surface 10 on which the electrode is to be formed is arranged so that -C is perpendicular to the direction E of the laser beam. +X11 minutes, for example 3XIO-2Tor
r ~200 X I O””Torr of WI■-
As a vacuum atmosphere containing oxygen, a wavelength of I (l 61 tm Nd :YAG l/
− Lee − and the diameter is + (+ 100 in the area of 07+m)
A single laser beam with millijoule energy is irradiated for 20 nanoseconds.

As described above, when a laser beam is irradiated to a portion including a predetermined portion of the electrode formation surface 10 of the material A'AS of the regenerated needle body, the material S of the regenerated needle body irradiated with the laser beam is
, the part perpendicular to the irradiation direction E of the Rade light, that is, the electrode formation surface 1 in the element *AS of the regenerated needle body.
When only 0 is heated to a temperature of 1,000°C or more, the carbon in the tire's 1,000 parts in that part transforms into a conductive layer, exhibiting a low electrical resistance value and forming a conductive layer. .

During the irradiation of the above 1-dil,,/--Lee Yu, the 1/-light is irradiated on the body σ) of the moon S.
(17 + m), soil, 11 ■ ASV of the main body of the raw material (11 of the planned electrode formation surface 10 in - is l)
/1111 or less 4'+j once, l! 7. Rokara, 1/
-11') Y: is irradiated 111 students 4 bodies A
2 (a) 1 tumble (: r 12 (c) (C-4)) shape, 1 ・- The light is the essence of Heigyusen body (AS↑vtJ
B) Electron (adjacent to the surface 10 where a is to be formed) Back...mouth 1°11
The back surface I+ mentioned above should also be irradiated.

What about 11? Since it has an angle of 2 and 4 with respect to the plane 10 where the tt pole is to be formed, the back is #f! II,
II (L'r1+/--1 light irradiates C and back TI
, II can be set to 1 [-I j + l gi is small, is it -, te, the temperature of the back surface II, II is 0 old) ℃ or more T -], and the back surface can also be changed by Rayleigh light irradiation. I+,+
A conductive layer ("1") is not formed on +.

Figure (1)) In the case of the one shown in the figure (t), when the light is irradiated (the light is 1/-, the light is 4 at the cumulative moon S of the playback button body).
) Irradiated only on the surface where electrodes are to be formed i+,, +Ij Cowshed 1
The main body's cumulative moon S is ↑d Gero back II, and 11 is irradiated J (
Since there is no center and back side II, 'II K (:rp T
The lithium layer is made of cedar.
c) As shown in the figure, when the 41-Lee light is irradiated, the 17-Lee light is applied to the electrode formation surface 10 as well as (
The back surface 11°11 will also be irradiated.1. In the case of f-light (go, n-→no), there are 5 variations in the irradiation conditions of the light.
1. In order to ensure that the conductive layer is formed only on the electrode formation surface 10 at any time, the electrode formation surface and the back surface 1
It is preferable to set the angle with 1 to 454 or more and 2.

Rayleigh light illumination I4. 1, the diamond ring on the S-pole forming surface of the internal needle body becomes a conductive layer, and 11 is used as an electrode part. With the regeneration button that is made, it is not necessary to apply the "Kenryoku Kaji" to regulate the rlj of the electrode part after converting the carbon of the tie A and the carbon itself into a conductive layer. There are problems with the existing proposals mentioned above (it is clear that the present invention does not have them).

Now, the electrode part of the electrostatic capacitance change detection type appears on the sliding surface, and the information signal in the text is Since the information signal is reproduced as a change in capacitance value, the thickness of the electrode part is important for the information signal recorded on the Goteisk. Get a signal and you'll need it.

By the way, if the surface of the electrode part is uneven, even if the electrode part has a constant thickness at every part of the ridge, the surface of the electrode part can be detected and reproduced by the tip of the electrode part. The recording wavelength of the face is thicker than twice the thickness of the electrode part described above (
Become.

Therefore, since the electrode part must have no unevenness on its surface, the electrode formation surface 10 on which the electrode part is to be formed also has no unevenness exceeding the capacity value. Be polished as required (a)
33 Tokono) is scheduled to form a 1.9 gero electrode on the main body σ) element 4J S rlii I (1 is too good jl'f 7:
[%g (tfii v1 polished Ji, -CiZ]),
Electrode forming portion V of electrode forming surface 10 Z=J l-te1
．．・--Lee-)v.

Even if irradiated, 1. -- The electrode formation surface 10
It is absorbed by the tire, and it permeates into the inside of the tire.
A conductive layer is formed on the surface 10 where the electrode is to be formed.
something bad will happen).

In the above state, the electrode formation surface 10 was observed under an electron microscope at a magnification of about 30,000 times, and the electrode formation surface 10 was well polished to the extent that no surface roughness could be detected. Then, the surface 10 on which the electrode is to be formed is irradiated with l/-reflection light, and a conductive layer made of diamond itself θ] carbon is formed thereon. In order to form the electrode, the electrode end portion must have a substantial thickness of 1/2 or less of the shortest recording wavelength of the information signal on the disk. It is desirable that surface 1() has some roughness.

Then, if there is no roughness in the above-mentioned state, the original SS of the regeneration button body with the electrode formation surface 10 is removed. A conductive layer can be formed well by irradiating the surface with light.

In addition, if FI5 is used as raw body S, and the electrode formation surface 10 of it is good. An anti-reflection film (< is a light-absorbing film) is applied to the surface, and 1/-the light is irradiated, and the irradiation process is completed.
Good results can be obtained by removing the above-mentioned light-reflection preventing film (1-< is a light-absorbing film).

Any material that absorbs laser light can be used as the anti-reflection coating 11 (or (1 light absorption film)).・Mitter link or other appropriate means may be adopted.1.If the constituent material of the film does not have conductivity at the time of light reflection, it is assumed that it is present. It will not have any negative effect on the regeneration operation of the Heigyusen, so it will be removed in a later process.'': Don't do that (C is also good.

In addition, if the entire regenerated needle body θ) is made of tire 1,000 cm I>t-C (a), then i:r, and when the above-mentioned light is reflected, 1 (-1 film (a) L <+'J original absorption) model) is composed of conductive 171 material, and the film is formed only at the electrode formation f/constant surface 10 part (trc continues [
] It is best to apply it up to +If +C at the base of the moon of one cow so that it can be used as a signal extraction part from the evening part. It is necessary to remove any excess film that is in contact with blood on the surface 10 where the electrode is to be formed.

In this local explanation, when the laser light is irradiated with 1/- laser light, the element A of the playback button body is irradiated with the laser light.
(It was assumed that preheating had not been carried out at Jl/]1.
1/- At the time of irradiation with the light, the element (A) of the raw sword body (111) may be preheated and the fang 1 heated.

As is clear from the above explanation in detail A (II), according to the manufacturing method of the electrostatic capacitance value change detection type regeneration button of the present invention, the element 44K of the regeneration 1 body is formed on the surface where the electrode is to be formed. Da・j to the included part/−−+J−light and other 25−
By irradiating the half-magnetic radiation, it is possible to selectively form the electrode part on the surface where the electrode is to be formed (on the conductive layer made of carbon of the material of the playback button body itself). Also, is the shape of the playback button itself the same as the shape of the completed playback button? Since the button is pre-processed into the shape of the birth button in the state, the surface where the electrode is to be formed is exposed to light beams and other light.
- After irradiation with low-power radiation (after forming a conductive layer of carbon of the diamond itself (it is not necessary to apply the C1 polishing process, it is necessary to perform the C1 polishing process)) (Also, the polishing process that is performed when making a recycled button body element + AS with a predetermined external shape may cause chipping at the edge of the electrode part.) Since it can be done in a state where it is difficult to do it, it has various advantages such as ease of construction.

[Brief explanation of drawings]

Figures 1 (a) and 111 (c) are plan views of the sliding surfaces of raw chisel, Figures 2 (a) to (c) are the reconstructed old body θ. ... Sliding surface, 10. Planned electrode formation surface, 11. Back surface, 12. Introductory surface, 1:3. Metal rod, 14. Couillamont piece, 15. Steel iron, S.. Month of regeneration button body. , E
Stingray, Lugi's irradiation direction,

Claims (1)

[Claims] At least the part of the sliding surface that can be cut into one piece and the area where the electrode is to be formed are
The shape is the same as the outer shape of the first playback button, or the sliding surface is not formed and the tooth 1 is not formed. ``IQ Raw Button Evening'') Prepare the PI raw wood body that has been pre-processed into a shape, place it in an oxygen-containing atmosphere, and press the above-mentioned regeneration button.''・Irradiate the part of the body that includes the pre-formation of the electrode with a Rayleigh radiation from the side of the face to χ・1, and then Only in the electrode formation part, the evening r -
i-1: No.I.T1. ．． +Jr raw button that detects changes in capacitance by forming an electrode part with a layer.