JP3855377B2 - Metal reflective film recovery apparatus for disk-shaped information recording medium and metal reflective film recovery method thereof - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a metal reflection film recovery apparatus and a metal reflection film recovery method for recovering a metal reflection film formed on a disk-shaped information recording medium for recording information in the medium.
[0002]
[Prior art]
As a disk-shaped information recording medium for recording information, there are an optical disk and a magneto-optical disk.
Taking an optical disk as an example of the information recording medium, information recorded on an optical disk such as a compact disk (CD) can be read by, for example, laser light emitted from an optical pickup. At this time, the laser beam is reflected by the metal reflection film of the optical disc, and the reflected light is received as a return light by the light receiving portion of the optical pickup, thereby reproducing the information recorded on the optical disc. It is like that.
[0003]
By the way, as a metal reflective film formed on such an optical disc, for example, gold is used. In recent years, with the seriousness of environmental destruction, research on the reuse of defective products in used products or processes has been promoted. However, it is necessary to recover the metal reflective film on the optical disk and reuse it. Is coming out.
The metal reflection film of the optical disk is attached to a substrate such as a polycarbonate substrate. In order to recover the metal reflection film, it is necessary to peel from the substrate.
[0004]
Conventionally, as a method for collecting this type of metal reflective film, there is a method of peeling using an adhesive. For example, an adhesive tape or an adhesive tape coated with a water-soluble adhesive is attached to the metal reflective film of the optical disk, and the metal reflective film is peeled off the substrate by forcibly pulling the tape.
In addition, as another method of collecting the metal reflective film, there is a method of buffing and peeling. By this buffing, the metal reflective film on the substrate is polished.
Further, there is a method in which the metal reflection film is chemically dissolved and recovered.
[0005]
[Problems to be solved by the invention]
However, in the pressure-sensitive adhesive peeling method using a pressure-sensitive adhesive tape or adhesive tape, it is necessary to scratch one end of the optical disk, and consumables such as pressure-sensitive adhesive tape and adhesive tape are required. In addition, the separation type recovery device becomes a complicated mechanism and becomes an expensive device.
[0006]
In addition, when a recovery device using the above-described buff polishing peeling method is used, there is a possibility that the polycarbonate substrate may be simultaneously polished by the buff polishing. In addition, an expensive abrasive for buffing is necessary as a consumable item, and the recovery device has a complicated mechanism and is expensive.
[0007]
In the case of using a chemical recovery method, acid, alkali, organic solvent, etc. are necessary as consumables, and measures for maintaining the work environment are also required. In addition, further measures are needed to ensure durability against scientific chemicals.
As described above, the conventional recovery apparatus using the metal reflection film peeling method has a problem that the recovery cost of the metal reflection film is increased.
Therefore, the present invention solves the above-described problems, and a metal reflective film recovery apparatus for a disk-shaped information recording medium that can reliably and inexpensively recover a metal reflective film formed on a disk-shaped information recording medium, and It aims at providing the metal reflective film collection | recovery method.
[0008]
[Means for Solving the Problems]
  In the present invention, the above object is a metal reflection film recovery apparatus for recovering in a medium a metal reflection film formed on a disk-shaped information recording medium for recording information.
  A container containing water or a medium composed of water and ethanol or water and methanol;
A holding body that holds an information recording medium and holds a plurality of information recording media arranged at intervals on the medium in the container, and driving means for putting the holding body into and out of the medium in the container Prepared,
The holding body has a plurality of grooves, the central hole of the information recording medium is held in the groove, and the cross-sectional shape of the groove is smaller than that of the central hole of the information recording medium. Operation means held so as to be movable in the vertical direction, axial direction and rotational direction with respect to the holding body;
  Vibration generating means for applying vibration to the information recording medium disposed in the medium, peeling off the metal reflective film from the information recording medium and collecting it in the medium in the container;
This can be achieved by a metal reflective film recovery device for a disk-shaped information recording medium.
[0009]
In the present invention, the container contains a medium. The operation means holds the information recording medium, arranges the information recording medium on the medium in the container, and takes out the information recording medium after collecting the metal reflective film.
The vibration generating means applies vibration to the information recording medium in the medium, peels the metal reflective film from the information recording medium, and collects it in the medium in the container.
By doing so, simply placing the information recording medium in the medium and applying vibration, the vibration is applied to the information recording medium through the medium. It can be recovered in the medium.
[0010]
  The above object is, in the present invention, a metal reflection film recovery method for recovering in a medium a metal reflection film formed on a disk-shaped information recording medium for recording information,
Disposing an information recording medium in water or water and ethanol or a medium composed of water and methanol by means of operating means;
Peeling the metal reflective film from the information recording medium by applying vibration to the information recording medium disposed in the medium by vibration generating means;
Recovering the metallic reflective film in the medium,
The operating means holds the information recording medium, holds a plurality of information recording media arranged on the medium in the container at intervals, and puts and removes the holding body in the medium in the container. Driving means,
The holding body has a plurality of grooves, the central hole of the information recording medium is held in the groove, and the cross-sectional shape of the groove is smaller than that of the central hole of the information recording medium. Metal reflection for recovering in a medium a metal reflection film formed on a disc-shaped information recording medium, which is held so as to be movable in a vertical direction, an axial direction and a rotation direction with respect to a holding body By membrane recovery method,Can be achieved.
  In the present invention, the information recording medium is arranged in the medium in the container, and the information recording medium is vibrated, whereby the metal reflective film is peeled off from the information recording medium and recovered in the medium in the container. it can. Thereby, the metal reflective film can be peeled off from the information recording medium and recovered in the medium.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described in detail with reference to the accompanying drawings.
The embodiment described below is a preferred specific example of the present invention, and thus various technically preferable limitations are given. However, the scope of the present invention is particularly limited in the following description. Unless otherwise stated, the present invention is not limited to these forms.
First, FIG. 1 shows a preferred embodiment of a metal reflective film recovery apparatus for a disk-shaped information recording medium of the present invention.
An information recording medium (hereinafter referred to as a disk) 1 to be processed by the metal reflective film recovery apparatus 100 shown in FIG. 1 will be briefly described with reference to FIG.
The disk 1 is, for example, a kind of optical disk CD-R (write-once compact disk), a polycarbonate substrate 1d, a dye recording layer 1c, a gold reflecting layer 1b as a metal reflecting film, and a UV (ultraviolet curable) resin. It is a laminated body of the topcoat layer 1a. The polycarbonate plate 1d is provided with a guide groove 1e. The metal reflective film recovery apparatus 100 shown in FIG. 1 attempts to recover the UV resin topcoat layer 1a and the gold reflective layer 1b by separating them from the polycarbonate 1d.
[0012]
If the metal reflective film recovery apparatus 100 can peel the gold reflective layer 1b from the polycarbonate substrate 1d of the disk 1, not only the gold reflective layer 1b can be reused but also the range of reuse of the polycarbonate substrate 1d is expanded. It will be.
1 includes an ultrasonic cleaning tank 21 as a container, an operation means 60, an ultrasonic oscillator 22 as a vibration generating means, a base 31, and the like.
[0013]
The attachment plate 85 of the operation means 60 is fixed vertically with respect to the base 31. In the vicinity of the mounting plate 85 and on the base 31, the ultrasonic cleaning tank 21 is preferably set or fixed so as to be detachable. The ultrasonic cleaning tank 21 contains a predetermined amount of water 11 as a medium. An ultrasonic oscillator 22 is disposed on the inner bottom surface of the ultrasonic cleaning tank 21.
The operating means 60 is a device for disposing one or more discs 1 in the water 11 in the ultrasonic cleaning tank 21 and taking out the disc 1 from the water 11 again after recovering the gold reflective layer 1b. It is.
[0014]
An air table cylinder 82 as drive means is incorporated in the mounting plate 85 of the operation means 60. A rising end stopper 84 is fixed to the upper end portion of the air table cylinder 82, and a lowering end stopper 83 is attached to the lower end of the cylinder 82.
The cylinder 82 can move the table 81 with air pressure in the Z direction (vertical direction) along the rod 82a.
[0015]
A cleaning jig 91 (holding body) is attached to the moving table 81. The cleaning jig 91 holds one or a plurality of discs 1 detachably. FIG. 3 shows a part of the cleaning jig 91, and a groove 91h is formed at a predetermined interval L in the middle of the cleaning jig 91 (in FIG. 3, two grooves 91h are shown as an example. ) The largest diameter d1 of the cleaning jig 91 is set smaller than the inner diameter of the disk 1, and the cleaning jig 91 can be inserted into the center hole of the disk 1.
Each groove 91h is located at a portion forming the center hole of the disk 1, and the disk 1 moves a slight distance in the Z direction, moves in the axial direction of the cleaning jig 91, or moves in the rotation direction R. It is also possible to rotate along.
[0016]
For example, pure water or tap water can be used as the water 11 in FIG.
FIG. 4 simply shows a control block type of the metal reflective film recovery apparatus 100 of FIG. The control unit 101 is connected to the start switch 102, the air table cylinder 82, the ultrasonic oscillator 22, and the like.
[0017]
Next, with reference to FIG. 1 and FIG. 3, operation | movement of the metal reflective film collection | recovery apparatus 100 of FIG. 1 is demonstrated.
With the moving table 81 raised, one or more disks 1 are set as shown in FIG. 3 for each groove 91h of the cleaning jig 91 by the operator or automatically. In this state, the diameter direction of each disk 1 is substantially in the Z direction (vertical direction) and is positioned at a predetermined interval L. The width B of the groove 91h is set larger than the thickness A of the disk 1. Therefore, in this state, the disk 1 can be rotated and moved along the rotation direction R in the cleaning jig 91, and can be moved up and down in the Z direction, and the disk 1 can move slightly in the axial direction.
[0018]
Next, the moving table 81 is lowered by the cylinder 82. Each disk 1 is completely immersed in the water 11 in the lowered state.
When the operator presses the activation switch 102 in FIG. 4, the control unit 101 activates the ultrasonic oscillator 22. The ultrasonic oscillator 22 oscillates for about 10 seconds with an output of 600 W, for example, at a frequency of 26 KHz, so that the UV resin topcoat layer 1 a and the gold reflective layer 1 b shown in FIG. 2 of the disk 1 are peeled from the polycarbonate substrate 1 d. Is done.
[0019]
It is presumed that this peeling (cleaning) mechanism is generally performed by two actions. One is cavitation caused by vibration, and the other is a physical and chemical reaction promoting action. In the embodiment of the present invention, since water is used as a medium, it seems that there is little chemical reaction promoting action.
[0020]
In general, when an ultrasonic wave is perpendicularly incident on a rigid body or the like, a wave that does not travel due to an overlapping of an incident wave and a reflected wave is generated. This is called standing wave. Stripping (cleaning) unevenness occurs due to the influence of standing waves. In order to prevent this, unevenness is prevented by moving the disk 1 that is the object up and down or rotating in the water 11 that is the medium during cleaning.
[0021]
In the case of the embodiment of the present invention, the disc 1 is rotated by the flow caused by the vibration of the water 11 as a medium, particularly by using the shaft-shaped cleaning jig 91 that creates a gap in the diameter of the center hole of the disc 1. This prevents uneven peeling. The ultrasonic oscillator 22 is stopped and the moving table 81 is raised. With the moving table 81 raised, the disk 1 is removed by the cleaning jig 91.
The disc 1 after peeling off the gold reflective layer 1b and the UV topcoat layer 1a is composed of a dye recording layer 1C and a polycarbonate substrate 1d as shown in FIG. In the water 11 after peeling, the UV resin topcoat layer 1a and the gold reflective film layer 1b are floated or precipitated.
[0022]
Water, which is a medium, can be easily separated from the topcoat layer 1a and the gold reflection layer 1b with a mesh or the like. The gold reflection layer 1b is recycled as a valuable material. The peeled polycarbonate substrate 1d disk is also pelletized, and the material can be recycled as a polycarbonate resin.
In the embodiment of the present invention, the ultrasonic oscillator is operated only when the disk is in water, but it may be always activated.
[0023]
Next, another embodiment of the present invention will be described with reference to FIGS.
The metal reflection film recovery apparatus 200 shown in FIG. 5 further includes sensors 86 and 87, a metal reflection film separation means 300, and a nozzle 45a as a fluid spraying means in addition to the metal reflection film recovery apparatus 102 shown in FIG. .
The metal reflection film recovery apparatus 200 includes an ultrasonic cleaning tank 21 as a container, an ultrasonic oscillator 22 as vibration generation means, an operation means 260, a metal reflection film separation means 300, and a nozzle 45a as a fluid spraying means. Yes.
[0024]
The ultrasonic cleaning tank 21 is set to be detachable or fixed on the base 31, and the mounting plate 85 of the operation means 260 is also fixed to the base 31 vertically. The cylinder (driving means) 82 of the operating means 260 confirms the stop position of the moving table 81 based on signals from the rising end sensor 86 and the falling end sensor 87. An ultrasonic oscillator 22 is set on the inner bottom surface of the ultrasonic cleaning tank 21, and a water discharge port 41 is provided in the vicinity thereof. Between the water outlet 41 and the nozzle 45a, a metal reflection film separating means 300 is set.
[0025]
The metal reflective film separating means 300 is built in the support base 99. The water discharge port 41 is connected to the mechanical filter 42 through a pipe 47a. The discharge port of the mechanical filter 42 is connected to the pump 43 through a pipe 47b. The discharge port of the pump 43 is connected to the direction valve 44 through a pipe 47c. One outlet of the directional valve 44 is connected to the nozzle 45a via a pipe 47d. Another outlet of the directional valve 44 is directly above the discharge container 46.
When the water 11 as a medium is exchanged, the direction valve 44 is switched to receive the water in the discharge container 46. The nozzle 45 a is located above the ultrasonic cleaning tank 21.
[0026]
When peeling and collecting the metal reflective film, the water 11 in the ultrasonic cleaning tank 21 is separated from the ultrasonic cleaning tank 21, the discharge port 41, the pipe 47a, the mechanical filter 42, the pipe 47b, the pump 43, the pipe 47c, The direction valve 44, the pipe 47d, the nozzle 45a, and the ultrasonic cleaning tank 21 are circulated in this order.
[0027]
FIG. 6 shows a control block example of the metal reflective film recovery apparatus 200 of FIG. 5. The control unit 71 includes a start switch 72, an ascending end sensor 86, an air table cylinder 82, a descending end sensor 87, the ultrasonic oscillator 22, and the like. Connected to the pump 44.
[0028]
Next, the operation of the metal reflective film recovery apparatus 200 shown in FIGS. 5 and 6 will be described.
The controller 71 lowers the air table cylinder 82 based on signals from the start switch 72 and the rising end sensor 86. The control unit 71 receives the signal from the descending end 87 and operates the ultrasonic oscillator 22 and the pump 44. After a preset time sufficient for peeling, the controller 71 stops the ultrasonic oscillator 22 and raises the air table cylinder 82. After receiving a signal from the rising end 86, the controller 71 stops the pump 44 after a preset time sufficient to wash off the gold reflective layer 1b and the topcoat layer 1a that have reattached to the disk. The operator removes the disc 1 from which the separation has been completed with the cleaning jig 91, and attaches the unpeeled disc to the cleaning jig 91. When the operator presses the start switch 72, a series of operations are performed again.
[0029]
Next, while the disk 1 is being peeled in the ultrasonic cleaning tank 21 and for a certain period of time while the disk after peeling is pulled up, the water 11 is circulated during and after peeling. As a result, the gold reflecting layer 1b or the like that is separated from the disk 1 and floats in the water 11 or is precipitated is collected by the mechanical filter 42. If the gold reflecting layer 1b and the UV resin topcoat layer 1a are not collected at an appropriate time, the total reflecting film collecting operation is completed with the peeled gold reflecting layer 1b reattached to the disk 1. This deteriorates the recovery rate of the total reflection film and the like. By operating the pump for a certain period of time, the water 11 can wash off the gold reflective layer 1b and the like on the disk 1 through the nozzle 45a and return it to the ultrasonic cleaning tank 21, and can be recovered by the mechanical filter 42.
With the above operation, the peeled gold reflective layer 1b and the like can be efficiently recovered.
[0030]
Next, another embodiment of the embodiment of the present invention shown in FIG. 5 will be described with reference to FIGS.
7 and 8 show different fluid spraying means 400 and 500, respectively. The fluid spraying means 400 in FIG. 7 is composed of a high-pressure air source 401 and a nozzle 45b connected to the high-pressure air source 401. . The high-pressure air from the high-pressure air source 401 can be blown through the nozzle 45b to the disk 1 of the cleaning jig 91 in the raised state. When the high-pressure air is blown, the gold reflective layer 1b is peeled off. However, when the gold reflective layer 1b or the like is still attached to the disk 1, the gold reflective layer 1b or the like By spraying from the polycarbonate substrate 1d with high-pressure air, it is possible to drop the water 11 in the ultrasonic cleaning tank 21.
[0031]
8 includes a water supply source 501 and a nozzle 45a, and the water reflected from the water supply source 501 adheres to the disk 1 attached to the cleaning jig 91 from the nozzle 45a. The gold reflective layer 1b and the like can be removed from the polycarbonate substrate 1d of the disk 1 by being sprayed on the layer 1b and the like, and dropped into the water 11 of the ultrasonic cleaning tank 21 and recovered.
As described above, the gold reflecting layer 1b and the like reattached to the disk 1 can be reliably recovered on the water 11 side.
Moreover, you may use together a high pressure air flow and a water flow.
[0032]
9 and 10 show another embodiment of the cleaning jig 91 to which the embodiment of FIGS. 1 and 5 can be applied. The groove 91k of the cleaning jig 91 of FIG. 9 is substantially V-shaped when viewed in cross section, and the maximum width B of the groove 91k is wider than the width of the disk 1.
The groove 91j shown in FIG. 10 has a substantially trapezoidal shape when viewed in cross section, and its maximum width B is set wider than the width A of the disk 1.
In addition to this, the groove shape of the cleaning jig 91 may of course be a semicircular shape or an elliptical shape when viewed in cross section.
[0033]
Reference is now made to FIGS.
The scratch forming means 600 shown in FIG. 11 shows the scratch forming means 600 for positively forming scratches on the gold reflective layer 1b and the UV resin top coat 1a of the disk 1. The scratch forming means 600 scratches the gold reflective layer 1b and the UV resin topcoat 1a of the disk 1 before recovering the metal from the metal reflective film recovery apparatus 200 as shown in FIG. 1 or FIG. It is a device for.
[0034]
In the operation example of the embodiment in FIG. 1 and FIG. 5, a used disk, a disk that has failed during the manufacturing process, or an unused disk is mounted on the cleaning jig 91 as it is. The gold reflective layer 1b of the disk 1 and the UV resin topcoat 1a are peeled off and collected.
However, the scratch forming means 600 shown in FIG. 11 scratches the disc 1 of this kind in advance with respect to the gold reflecting layer 1b and the UV resin top coat 1a as shown in the patterns shown in FIGS. By actively forming it, the gold reflective layer recovery efficiency of the metal reflective film recovery apparatus 100, 200 as shown in FIG. 1 or FIG. 5 is increased.
[0035]
The scratch forming means 600 includes a positioning portion 58, a setting plate 56, a support plate 57, two linear guides 53 and 53, and a mold 51.
The mold 51 is fixed to the lower ends of the linear shafts 52 and 52 of the linear guides 53 and 53. Moreover, the central portion of the mold 51 is fixed to the rod 55 a of the air cylinder 55.
The disc 1 is positioned so that the gold reflective layer 1b and the UV resin topcoat 1a on the label surface side face the mold 51.
[0036]
Several grooves 59 are formed on the lower surface of the mold 51. The shape of the protrusion 59 can be a pattern that can form a scratch shape on the label surface side of the disk 1 shown in FIGS.
A grid-shaped flaw 1f is formed on the gold reflective layer 1b and the UV resin top coat 1a of the disk 1 of FIG. In the gold reflecting layer 1b and the UV resin topcoat 1a in FIG. 12, a parallel line-shaped scratch 1g is formed. Radial scratches 1h are formed on the gold reflective layer 1b and the UV resin topcoat 1a of the disk 1 in FIG. Concentric scratches 1j are formed on the gold reflecting layer 1b and the UV resin top coat 1a in FIG. In the gold reflective layer 1b and the UV resin top coat 1a in FIG. 16, scratches 1i having a random shape are formed.
[0037]
When the cylinder 55 of the scratch forming means 600 in FIG. 11 is operated, the mold 51 is lowered in the arrow Z1 direction along the linear guides 53, 53, and the gold reflecting layer 1b on the label surface side of the disk 1 and the UV resin top. Scratches can be formed on the coat 1a in patterns as shown in FIGS.
In this way, the projection 59 (blade portion) of the mold 51 forms a scratch on the gold reflective layer 1b and the UV resin top coat 1a in advance, so that the metal reflective film recovery apparatus as shown in FIGS. The gold reflective layer 1b can be peeled and collected in a shorter time.
[0038]
Next, another embodiment of the metal reflective film recovery apparatus of the present invention will be described with reference to FIGS.
The embodiment shown in FIGS. 17 to 20 can be applied to the metal reflective film recovery apparatus shown in FIGS.
The cleaning jig 91 in FIG. 17 has a plurality of grooves 91h at predetermined intervals. Therefore, it is possible to insert and hold the portion of the disk 1 forming the center hole corresponding to each groove 91h.
[0039]
18 shows a state in which the disc 1 is held with respect to the cleaning jig 91 of FIG. It shows the state of trying to scratch using it.
The upper end side of the disc 1 is held by the disc fixing jig 750, but the lower end side of the disc 1 can be scratched by the blade 710 of the wound jig 700. That is, the scratching jig 700 moves along the X1 direction to scratch the gold reflecting layer 1b and the UV resin topcoat 1a of each disk 1. At this time, the upper end side of the disk 1 is elastically held by the urethane rubber 751 of the disk fixing jig 750. This urethane rubber 751 is fixed to steel 752. At this time, the disk fixing jig 750 presses the disk 1 downward with F force. By doing in this way, the blade 710 can form the damage | wound 1m like FIG. 20 with respect to the gold | metal reflecting layer 1bUV resin topcoat 1a of the disk 1. FIG.
[0040]
18 and 20 is used, the scratch forming means 700 as shown in FIG. 11 is used in advance to the gold reflective layer 1d of the disk 1 and the UV resin top coat 1a. And no need to hurt.
Further, as shown in FIGS. 3, 9, 10, and 18, when the cleaning jig 91 can hold a plurality of discs 1 at a predetermined interval, the disc surfaces do not contact each other. In addition, it is possible to perform the peeling operation of the gold reflective layer of a large number of discs in the same time. Moreover, since the water 11 as a medium flows in the gap between adjacent disks, the unevenness of separation is unlikely to occur, and the width of each groove is set larger than the width of the disk so that the disk can rotate itself by the flow of water. It is desirable to do.
As for the automation of handling such as attachment / removal of the disk 1 to / from the cleaning jig 91, in the embodiment of the present invention, the operation of attaching / removing the disk 1 to / from the cleaning jig 91 is performed manually. Of course, it is also possible to make an automatic device in combination with a robot and a suction hand.
During automatic conveyance, it is naturally possible to integrate the device by attaching it to the cleaning jig 91 after scratching the disk by the scratch forming means 600 (scratching mechanism) in FIG.
[0041]
By the way, the present invention is not limited to the above embodiment.
In the embodiment of FIG. 8, water is used as the medium. However, the present invention is not limited to this, and other types of media such as the following may be used. Water, which is a medium for irradiating with ultrasonic waves, does not need to have a particularly high purity, and additives can be added as necessary. For example, the addition of a surfactant is effective for promoting peeling, draining after treatment, preventing re-adhesion of the reflective film, and the like. Moreover, there is no restriction | limiting in particular in the temperature of the water in the case of ultrasonic irradiation, and a sufficient effect is acquired in a greenhouse. Further, a mixed medium of water and another type of medium may be used instead of water. For example, a combination of water and ethanol or a combination of water and methanol can be employed. Further, in order to apply vibration to the disk, ultrasonic vibration by an ultrasonic oscillator is used. However, the present invention is not limited to this, and other types of vibration oscillators can also be used. The shape of the groove for the disk may be substantially triangular in cross section.
[0042]
The type of disc-shaped information recording medium is not limited to CD (compact disc) and CD-R, but other types of discs, for example, other types of optical discs such as high-density recording discs (DVD) and laser discs (LD). The present invention can also be applied to a magneto-optical disk.
In the embodiment shown in FIG. 1 and FIG. 5, etc., the disks 1 are arranged in parallel in the vertical direction and are held by the cleaning jig. Of course, it does not matter even if it is held as described above, or in other holding forms. When holding the cleaning jig, it may of course be only one sheet or a plurality of sheets.
Further, the shape of the tip of the blade 710 of the scratching jig shown in FIG. 19 is preferably sharp with a tip angle θ of about 30 degrees in order to make a deep scratch using stress concentration. Even in this case, since the disk 1 itself bends, it can be scratched by utilizing the spring property (elasticity). In this case, the number of scratches is, for example, within two times, and the width of the blade 710 of the scratching jig in FIG. 18 is, for example, about 160 mm.
In addition to the gold reflective layer, the metal reflective film includes other materials depending on the type of disk.
[0043]
  As described above, according to the present invention, the metal reflective film formed on the disc-shaped information recording medium can be reliably and inexpensively collected.Further, since the disc-shaped information recording medium can be moved up and down or rotated, it is possible to prevent uneven peeling.
[Brief description of the drawings]
FIG. 1 is a diagram showing a preferred embodiment of a metal reflective film recovery apparatus for a disk-shaped information recording medium according to the present invention.
FIG. 2 is a view showing an example of a disc applied to FIG. 1;
FIG. 3 is a view showing a state where the cleaning jig in FIG. 1 holds several disks.
FIG. 4 is a diagram showing a control block in FIG. 1;
FIG. 5 is a view showing another embodiment of the metal reflective film recovery apparatus of the present invention.
FIG. 6 is a diagram showing a control block of the apparatus shown in FIG. 5;
FIG. 7 is a view showing another embodiment of the metal reflective film recovery apparatus of the present invention.
FIG. 8 is a view showing another embodiment of the metal reflective film recovery apparatus of the present invention.
FIG. 9 is a view showing another embodiment of the cleaning jig in the metal reflective film recovery apparatus of the present invention.
FIG. 10 is a view showing another embodiment of the cleaning jig in the metal reflective film recovery apparatus of the present invention.
FIG. 11 is a diagram showing an example of a scratch forming means applied to the present invention.
FIG. 12 is a view showing a disk in a state where a scratch on the gold reflective layer is formed.
FIG. 13 is a view showing a disk in a state where a scratch on the gold reflective layer is formed.
FIG. 14 is a view showing a disk in a state where a scratch on the gold reflective layer is formed.
FIG. 15 is a view showing a disk in a state where a scratch on the gold reflective layer is formed.
FIG. 16 is a view showing a disk in a state where a scratch on the gold reflective layer is formed.
FIG. 17 is a view showing a state where a disc is attached to a cleaning jig.
18 is a view showing a state where a disk attached to the cleaning jig of FIG. 17 is about to be damaged.
19 is a view showing an example of the shape of the blade of the wound jig shown in FIG.
20 is a view showing the wound jig shown in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Disc (disc-shaped information recording medium), 1b ... Gold reflective layer (metal reflective film), 11 ... Water (medium), 21 ... Ultrasonic cleaning tank (container), 22. ..Ultrasonic transmitter (vibration generating means), 60 ... operation means, 300 ... metal reflection separating means, 45a ... nozzle (fluid spraying means), 82 ... cylinder (drive means)

Claims (10)

A metal reflection film recovery apparatus that recovers a metal reflection film formed on a disk-shaped information recording medium for recording information in the medium,
A container containing water or a medium composed of water and ethanol or water and methanol;
A holding body that holds the information recording medium and holds a plurality of the information recording media arranged at intervals on the medium in the container, and puts the holding body into and out of the medium in the container And drive means
The holding body has a plurality of grooves, the central hole of the information recording medium is held in the groove, and the cross-sectional shape of the groove is made smaller than the central hole of the information recording medium. Operation means that is held so that the information recording medium can move in the vertical direction, axial direction, and rotational direction with respect to the holding body;
Vibration generating means for applying vibration to the information recording medium disposed in the medium, peeling off the metal reflective film from the information recording medium, and collecting it in the medium in the container;
A metal reflective film recovery apparatus for disc-shaped information recording media, comprising:   The disc-shaped information recording medium according to claim 1, further comprising a scratch forming means for forming a scratch on the metal reflective film of the information recording medium before the information recording medium is arranged on the medium in a container. Metal reflective film recovery device.   2. The metal reflective film recovery apparatus for a disk-shaped information recording medium according to claim 1, wherein the vibration generating means is an ultrasonic oscillator that generates ultrasonic waves, and is disposed in the container.   The operation means of the information recording medium comprises fluid spraying means for spraying a fluid onto the taken out information recording medium after taking out the information recording medium after the recovery processing of the metal reflection film from the container. The metal reflective film collection | recovery apparatus of the disk-shaped information recording medium of description.   2. The metal reflective film recovery apparatus for a disk-shaped information recording medium according to claim 1, further comprising metal reflective film separating means for separating the peeled metal reflective film located on the medium in the container from the medium. . A metal reflection film recovery method for recovering in a medium a metal reflection film formed on a disk-shaped information recording medium for recording information,
Disposing the information recording medium in water in a container or a medium composed of water and ethanol or water and methanol by an operation means;
Peeling the metal reflective film from the information recording medium by applying vibration to the information recording medium disposed in the medium by vibration generating means;
Recovering the metal reflective film in the medium,
The operation means holds the information recording medium, holds a plurality of the information recording media arranged at intervals on the medium in the container, and holds the holding body in the container in the container. Drive means for putting in and out of the medium,
The holding body has a plurality of grooves, the central hole of the information recording medium is held in the groove, and the cross-sectional shape of the groove is made smaller than the central hole of the information recording medium. A metal reflective film formed on a disc-shaped information recording medium, wherein the information recording medium is held so as to be movable in an up-down direction, an axial direction, and a rotational direction with respect to the holding body. A method for recovering a metal reflective film that is recovered in a medium. Before placing the information recording medium to the medium in the container, a metal reflective film of a disk-shaped information recording medium according to claim 6, further comprising forming a scratch on the metal reflection film of the information recording medium Collection method .   7. The method for recovering a metal reflective film of a disk-shaped information recording medium according to claim 6, wherein the vibration generating means is an ultrasonic oscillator that generates ultrasonic waves.   The disk-shaped information recording medium according to claim 6, further comprising a step of spraying the fluid onto the information recording medium that has been taken out of the information recording medium after the metal reflective film has been collected from the container. Metal reflective film recovery method. The method for recovering a metal reflective film of a disk-shaped information recording medium according to claim 6, further comprising a step of separating the peeled metal reflective film located on the medium in the container from the medium.

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