TW397697B - Method of recycling disk recording medium and apparatus for recovering metal reflective film - Google Patents

Abstract

A method of recycling a disk recording medium includes the step of retaining the disk recording medium in a liquid medium, the disk recording medium having a layered structure including a substrate, a dry layer, a reflective film, and a protective layer; radiating ultrasonic waves onto the disk recording medium such that the substrate and the reflective film are separated from each other; and bringing a solution into contact with the substrate separated from the reflective film such that the dye layer is separated from the substrate in order to recover the substrate, the solution dissolving the dye layer.

Description

Patent Application No. 87111236 A7 | Chinese Manual Correction Page (June 88) B7: 丨 · 4ΐ ^ νΤ7Γ V. Description of the Invention (15) [Table 2] Table 2 Effect of Solvent Dyeing Solubility on Substrate N-hexane No water, no water [Table 3] Table 3 Solvent composition Dyeing solubility Water / ethanol (99/1) Partially observable water / ethanol (95/5) Observable water / ethanol (80/20) Observable water / Ethanol (60/40) Water / ethanol (40/60) Water / ethanol (99/1) Water / ethanol (95/5) Water / ethanol (95/5) 80/20) Observable water / methanol (60/40) Observable water / methanol (40/60) Observable water / ethanol (100/0) benefits (Please read the notes on the back before filling (This page) The solvent in Table 1 printed by the Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs can dissolve and dye, and it will not affect the substrates except acetone and methoxyethyl ester. However, η-hexane and water in Table 2 cannot dissolve and stain. In addition, except for water / ethanol (1%) ', a solution having the composition in Table 3 can be dissolved and dyed. The present invention is applicable not only to CDs (laser discs) and CD-Rs, but also to other types of optical discs and magneto-optical discs, such as digital image discs (DVDs) and laser discs (LDs). In the embodiment shown in FIG. 4, FIG. 8, etc., the discs 1 parallel to each other are generally hung up-18-This paper size applies the Chinese National Standard (CNS) A4 specification (210X297 mm) A7 B7 V. Description of the invention (1 ) — —-~~-Background of the Invention 1 · The scope of the invention relates to a method for repeatedly using a disc recording medium, which has a substrate and a dyed layered structure. Film and film layer 2 · Relevant technical descriptions = recording media, such as optical discs (.pticaldi .... Special P f "money music, f image and information = 疋, laser disc division laser disc family The other discs in the standard have been used. In the environment before the 'about waste discharge,' (such as laser discs) is recommended to be tested. Most of the optical discs on the market are read-only, such as laser discs As shown in the figure, for example, the Raben & ^ το Tianye cymbal sheet contains a polycarbonate aluminum reflective film L2 and a protective layer L1, which are deposited in this order. In the conventional method of repeatedly making a cymbal sheet During the molding, the disc is crushed. In this state, the components of the security layer and the reflective film are also mixed into the molded product. It is impossible to restore the reflective film only, and the molded product is opaque. The Ministry of Economic Affairs fk standard% member X can only be used for limited purposes. In another method, the disc is immersed in an acid or saline solution to dissolve the aluminum reflective film, protective layer and The base material is thus separated from each other, so that the resin can be used repeatedly. In the method, the repeatedly used substrate is transparent and can be reused in the use of Nishida University. However, it is difficult to restore the film system. In addition to read-only discs, recordable discs are also available. There are several types of memorable green stone leaves & β β π plaques. The present invention is about a disc with a layered structure 4. Paper money A7 Printed by the Consumers' Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs Patent No. 87111236 Revised page of the Chinese manual of the application (June 88) B7 V. Description of the invention (23a) Symbol description of the graphic elements 1 Disc 47c Tube la Top coating 47d Tube lb Gold reflective layer 51 Metal mold lc Record dyeing layer 52 Linear axis Id Polycarbonate substrate 53 Linear guide le Guide groove 55 Cylinder If notch pattern 55a Rod lg Parallel opening 56 Setting plate lh Radial opening 57 Support plate lj Concentric opening 58 Setting section 11 Water 59 Protruding section 21 Ultrasonic cleaning pool 60 Operating unit 22 Ultrasonic generator 71 Controller 31 Bottom 72 Start switch 41 Exit 81 Mobile table 42 Mechanical filter 82 Pneumatic table cylinder 43 Pump 82a Rod 44 Directional valve 83 Lower end stopper 45a Nozzle 84 Upper end stopper 45b Nozzle 85 Mounting plate 46 Drain container 86 Sensor 47a tube 87 Sensor 47b tube 91 Cleaning mechanism (gripper) -26s-This paper size applies China National Standard (CNS) A4 specification (210X297 mm) (Please read the precautions on the back before filling this page)

A7! ______ B7 5. Description of the invention (2)-As shown in FIG. 2, it includes a substrate L7, a dyeing layer 16, a reflective film ^, and a protective layer L4. Normally, only one record is allowed in this type. An example of this type is the CD-R (Recordable Laser Disc). CD_R contains, for example, polycarbonate substrates, additives such as organic dyes (e.g., cyanine dyes), hardeners, gold reflective films, and ultraviolet-curable resins such as polypropylene resins. There is also a DVD -R (Recordable high-density recording discs: digital video discs and discs), in which-the above-mentioned layered structure is laminated together with additives as shown in FIG. 3. That is, the protective layers L11 and L11 are bonded together by an adhesive layer B ', and the colored layer L9, the gold reflective film L10, and a protective layer LU are deposited on a substrate L8 on both sides in this order. In these types of discs, in addition to the base material, an expensive gold reflective film is used. Therefore, restoration of the reflective film is necessary. For this purpose, although a solution can be used which dissolves the reflective film as described above, only a very dangerous solution can be used, such as aqua regia. Moreover, by processing the entire disc in a warmer temperature, organic substances such as the substrate are burned and only gold can be recovered. Therefore, in this method, the base resin cannot be recovered. Printed by the Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs, the above-mentioned optical disc, as shown in Figures 2 and 3, has a layered structure including a substrate, a dyed layer, a reflective film, and a protective layer. It is necessary to restore the substrate, the dyeing layer, and the reflective film individually. In particular, if the dyeing components of the dyeing layer are not individually restored from the substrate, the resin substrate cannot be reused. SUMMARY OF THE INVENTION / One object of the present invention is to provide a method for repeatedly using a disc recording medium, in which a substrate, a reflective film, and a dyeing component are separated, and at least the base-S- paper size is applicable to Chinese national standards ( CNS) Regulation M (2ΐ〇χ 297 public power) " — printed by the Consumers' Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs No. 87111236 Patent Application A7 Chinese Manual Correction Page (June 88) B7 V. Description of Invention (23b ) 91h groove 91j groove 91k groove 99 support 100 repeating use device 101 controller 102 start switch 200 metal reflection film 260 operation unit 300 operation unit removal equipment 400 fluid spraying equipment 401 high pressure air source 500 fluid spraying equipment 501 water source 600 Notched machine 700 Notched machine 710 Edge 750 Fixed parts 751 Aminomethyl ethyl rubber 752 Steel L1 Protective layer L2 Ming reflective film L3 Polycarbonate substrate L4 Protective layer L5 Reflective film L6 Dyed layer L7 Substrate L8 base Material L9 Dyeing layer L10 Reflective film L11 Protective layer (Please read the precautions on the back before filling this page) This paper size applies the Chinese National Standard (CNS) A4 specification (210X297 mm) A7 V. Description of the invention (3 materials are indeed restored for repeated use. In order to achieve the above purpose, please repeatedly use the disc recording medium according to the present invention. Method of filling in the page body after hearing the ins and outs-the medium has a layered structure including a substrate, a dyed layer, a reflective film and a protective layer-a disc recording medium containing an ultrasonic wave emitted in a liquid medium 媒体The step of separating the substrate and the reflective film from each other, and the step of contacting a solution capable of dissolving the dyeing layer with the substrate to separate a dyeing component to restore the substrate. According to the present invention, first, the 'substrate and reflection The films are separated from each other by emitting ultrasonic waves on a disc recording medium in a liquid medium. The medium has a layered structure including a substrate, a dyed layer, a reflective film, and a protective layer. Then, the substrate and a soluble The solution of the dyeing layer is contacted. Then, the dyeing component is removed, and the pure substrate component is restored. Therefore, only the substrate can be restored without restoring the dyeing component and the reflective film. According to the present invention, preferably, when the base material and the reflective film are separated from each other by emitting a super wave in a liquid medium, at least a protective layer is formed by opening a protective layer between the protective layer and the reflective film to protect at least The separation speed of the layer can be accelerated 'and the efficiency of separation and restoration of the substrate and the reflective film can be enhanced. Printed by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs In addition, according to the present invention, it is preferable to separate the reflection by heating Film to restore the reflective film, you can perform effective restoration of the reflective film. In addition, according to the present invention, it is preferred that by adding a soluble grain layer / valley solution to the substrate ', when the substrate and the reflective film are individually restored', the dyeing component is separated from the substrate. Therefore, the resin base material component can be individually recovered from the dyeing layer. This paper rule is _7 ^ 7 ^ 7 ^ grid (210xi ^ 7 A7 B?) It is printed as a consumer cooperative of the staff of the Central Standards Bureau of the Ministry of Economy of the present invention. The present invention serves as the fifth and description of the invention (4 diagrams for a brief explanation. FIG. 1 shows an example of a disc recording medium, FIG. 2 shows an example of a disc recording medium. FIG. 3 shows an example of a disc recording medium. 4 shows a repeated use device < preferred embodiment for performing a method of repeatedly using a disc recording medium according to the present invention; according to this FIG. 5 shows an example of a disc to be repeatedly used->. 6 A state is shown in which the cleaning mechanism with the device shown in FIG. 4 holds a plurality of discs; FIG. 7 shows a control block diagram of the repeated use device shown in FIG. 4; Open-gap "notch machine; Figure 9 shows an example of a gap made with a notch machine; Figure 10 is a flowchart showing an example of a method for repeatedly using a cymbal recording medium according to the present invention; Figure 11 shows a An embodiment of a device for recovering a metal reflective film Figure 12 shows a control block diagram of one of the devices shown in Figure 11 Figure 13 shows an embodiment of a device for recovering a metal reflective film; Figure 14 shows an embodiment of a device for recovering a metal reflective film; Figure 15 An example of cleaning mechanism is shown; Figure 16 is an example of cleaning mechanism; -7- This paper size applies to Chinese National Standard (CNS) Λ4 Regulations (210X297 公 #) {Please read the precautions on the back before filling this page)

Α7 Β7 Printed by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs 5. Description of the invention (5 Figure 17 shows a disc with a notched gold reflective layer; Figure 18 shows a disc with a notched gold reflective layer; Figure 19 Fig. 20 shows a disc with a notched gold reflective layer; Fig. 20 shows a disc without a notched gold reflective layer; Fig. 21 shows a state where the disc is fixed to a cleaning machine; Fig. 22 shows -State 'in which the sheet fixed to the cleaning mechanism shown in FIG. 21 has a notch;' FIG. 23 shows an example of the edge on the notch mechanism shown in FIG. 22; and FIG. 24 shows the notch mechanism shown in FIG. 22 Etc. Description of the preferred embodiments The preferred embodiments of the present invention will be described in detail with reference to the drawings. Although various technically preferred restrictions are imposed on the following preferred embodiments, it should be understood that the scope of the present invention is not limited to all The disclosed embodiments, unless there are limitations mentioned. First, FIG. 4 shows an example of a repeated use device for performing a preferred embodiment of a method for repeatedly using a disc recording medium according to the present invention. Do not repeat The recording medium (here referred to as a disc) handled by the device 丨 〇〇 will be briefly explained with reference to Fig. 5. Disc 1 is, for example, CD_R (Recordable Laser Disc), which is an optical disc and has a 61-shaped, " structure It includes a polycarbonate substrate 1 d, a recording dyeing layer (dyeing layer) as a gold reflecting layer (reflecting layer) lb as a metallic reflecting film, and a top coating composed of uV_ (outer, spring-cured) resin.丨 a. The guide groove 1e is provided in the polycarbonate base material id. The right I gold reflective layer 1b can be used repeatedly from the polycarbonate in the disc 1 to the paper size (please read the back Note this page, please fill in this page), \ -3 # 1. Printed by A7 ________B7, the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs. 5. Description of the invention (6) The acid and vinegar substrate Id is separated, and the gold reflective layer ib will be restored, and the The scope of repeated use of the carbonate substrate Id will be expanded. The repeated use device 100 includes an ultrasonic cleaning tank 21 as a container, an operation sheet 7L 60, an ultrasonic generator 22 as a vibration tool, a bottom 31, etc. A mounting plate 85 of one of the operating units 60 is vertically fixed on the bottom 31, and the ultrasonic wave The cleaning tank 21 is preferably set in a detachable manner or fixed to the mounting plate 85, near the bottom 31. The ultrasonic cleaning tank 21 contains a given amount of water u as a medium, and the ultrasonic generator 22 is disposed in the ultrasonic tank. The 0 operation unit 60 on the bottom end of the sonic cleaning pool 21 is a mechanism for placing-discs or plural discs i in the water in the ultrasonic cleaning pool 21, and the discs are restored after the gold reflection layer lb is restored _ 1 is taken out of the water 11. A pneumatic table cylinder 82 as a driving tool is combined in the mounting plate 85 of the operation unit 60, an upper end stopper 84 is fixed on the top of the pneumatic table cylinder 82, and the lower end is stopped The actuator 83 is mounted on the bottom end of the cylinder 82. A movable table 81 moves along a rod 8 in 2 directions (vertically) by air pressure. A cleaning mechanism (central holder) 91 is mounted on the movable table 81, and the cleaning mechanism 91 detachably holds a disc or a plurality of discs 丨. FIG. 6 shows one of the cleaning mechanisms w. A groove 91h is formed along the cleaning mechanism 91 at a given distance L (in FIG. 6, for example, two grooves are shown). The maximum diameter of the cleaning mechanism 9 is sufficiently smaller than the inner diameter of the disc 1, so that the cleaning mechanism 91 can be inserted into one of the center holes of the disc. (Please read the notes on the back before filling this page)

, 1T # 1

I 1 · -I _ -9- A7 A7 Yingan, the Shellfish Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs -----------... 5. Description of the Invention (7). ~~~ -_— ㈣ Placed as part of the arsenic core hole of the disc, the disc i can move a short distance in the Z direction, the outer base, the main body, and the object are rotated, the axis of the R rotor mechanism 91 is moved, or, for example, Pure water or tap water can be used as the water U shown in FIG. 4. FIG. 7 schematically shows the control device of the repeated use device ι〇〇 shown in FIG. 4 if connected to -starting 1Q2, pneumatic table: generator 22, etc. The problem θ wave 'second' will refer to FIG. 8: The notch machine in FIG. 8 is preferably (a * the disc! The gold reflective layer 115 and the ultraviolet curing resin top coating u in the disc! Notch. The notch tool 600 is a device for manufacturing a notch. The manufacture of the notch is performed by repeatedly using the gold reflection layer ib and ultraviolet rays processed on the disc i by the re-use device 100 shown in FIG. 4. Before curing the resin top coating la, according to the embodiment shown in FIG. 4, one used disc, one lacking Pal disc during production, or—unused disc is installed on the cleaning machine M as it is. On the other hand, the gold reflective layer ib and the UV-curable resin top coat la in the disc 1 are separated and restored. On the other hand, the use of the notched machine 600 shown in FIG. 8 is based on the use shown in FIG. 4 Reconsideration of the restoration efficiency of the gold reflective layer using the device 100 can be achieved by using the pattern shown in FIG. 9 in advance. The gold reflective layer lb and the ultraviolet curing resin top coating la are actively notched and strengthened. / The notch tool 600 includes a placement section 58, a setting plate 56, a support plate 57, two linear guides 5S, and a metal. Mould 51. -10k paper and silver scale when suitable for wealth II; ^ (CNS) A4 size (210X297 gong) (Please read the precautions on the back before filling this page), \ = 口 -ι ^ ϋ-.-1 A7 A7 Printed by the Central Standards Bureau of the Ministry of Economic Affairs, Shelley Consumer Cooperative, and printed description of the invention On the 55a of the air cylinder 55. The placement of the cymbal 1 is such that the gold reflective layer 1b and the ultraviolet curing resin top coat 1a under the label surface are opposed to the metal mold 51. Several protruding portions 59 for making grooves 59 Formed on the bottom surface of the mold 51 The shape of the protruding portion 59 is such that the notched pattern lf shown in FIG. 9 is made on the label surface side of the disc 1. 'When the cylinder 55 of the notched machine 600 is operated, The metal mold 51 moves downward along the linear guides 53 and 53 in the Z1 direction, because The pattern shown in FIG. 9 can be opened—notched on the gold reflective layer ratio on the label surface side of the disc 1 and the ultraviolet curing resin top coat la. As described above, by using the protruding portion 59 (edge of the metal mold 51) ) A notch is made in advance on the gold reflection layer lb and the UV-curable resin top coat 1 & the separation and recovery of the gold reflection layer lb can be performed within a short period of time by using the repeated use device 100 shown in FIG. According to the embodiment of the present invention, “the disc is irradiated with ultrasonic waves in its original state, or after the cutout is made on the reflective layer 1b and the topcoat layer 13 with a notch tool 600 as shown in FIG. 8, or After the disc is crushed. At this stage, there are no special conditions regarding the intensity of the ultrasonic frequency generated by the ultrasonic generator 22 shown in FIG. 4, but a frequency of about 24 to 28 kHz which can be generated by a typical ultrasonic vibrator is suitable. ^ Frequency can be obtained with the above frequency than $ = ^ ^ ^ f. Moreover, if caused by ultrasonic vibration (energy density is. · 5W / cm2 or more, effective separation can be performed. And , Can handle a single disc or a plurality of discs at the same time. -11- g size standard suitable for financial relations (谙 Read the precautions on the back before filling this page}

Printed by A7, Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs ---__ B7 V. Invention Description (.9) ~~ " ''-No matter during or after the ultrasonic processing, the water used as media can follow this cycle To speed up the separation and prevent re-adhesion of the separated reflective film, etc. to the substrate. Also, if the notch is made on the protective layer (top coat la) side of the disc before the ultrasonic emission, the reflective film The separation of lb is accelerated and it is very efficient. No special conditions are required for the opening tool, and a heating wire or a laser beam can be used instead of the edge shown in Fig. 8 (projection 59). Although there are no restrictions on the depth, location, and number of notches, the optimal depth extends from the protective layer side to the dyeing layer. The water used as a medium during the ultrasonic emission need not have high purity, but additives can be added if necessary. For example, by adding a surfactant to the water, the separation can be accelerated, and the water can be effectively discharged after treatment, which can prevent the reflective film from re-adhering to the disc. Moreover, there are no special temperature conditions' during ultrasonic emission and good results can be obtained at room temperature. According to the above-mentioned ultrasonic processing, the optical disc is divided into a substrate, a reflective film, and a protective layer. Next, a method of repeated use according to the repeated use device 100 shown in Fig. 4 will be described with reference to Figs. The movable table 81 stands upright, and a disc or a plurality of discs are placed in the grooves 91he on the cleaning mechanism 91 shown in FIG. 6 At this stage, the surface of the disc j is approximately in the Z direction (vertically), And placed at a given distance. Moreover, the width B of the groove 91h is larger than the thickness of the disc 丨. Therefore, the disc 1 on the cleaning mechanism 91 can be rotated in the rotation direction R, and can be moved vertically in two directions, and the disc 1 can be slightly moved along the axis of the cleaning mechanism 91. The movable table 81 is lowered by the cylinder 82. Workbench 8 丨 Decrease -12- This paper size is applicable to Chinese National Standards (CNS) M regulations (, 2! 0x 297 Gong (#first idle reading on the back seven note Ning Jl before filling this page)

Printed by the Consumers' Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs A 7 B7 V. Description of Invention (10)-’The disc 1 is immersed in water 11 redundantly. When the start switch 102 shown in Fig. 7 is depressed by the operator, the controller ιο starts the ultrasonic generator 22. By driving the ultrasonic generator 22 at a frequency of, for example, 26 kHz with an output of _Watt for about 10 seconds, the UV-curable resin top coat 1a and the gold reflective layer 113 will be produced from the disc shown in FIG. 5. Polycarbonate substrate was separated for 1 d. The separation (cleaning) mechanism is usually considered to have two effects, one is cavitation caused by vibration, and one is acceleration of physical and chemical reactions. According to the embodiment of the present invention, because water is used as a medium, the acceleration of the chemical reaction is small. Generally, when an ultrasonic wave enters a rigid body vertically, the incident wave and the reflected wave overlap—a wave that does not travel occurs—this is called a standing wave. Uneven separation (cleaning) occurs under the shadow of standing waves. In order to prevent unevenness, the disc worker (which is the item to be cleaned) moves or rotates vertically in water (which is the medium) during cleaning. According to the embodiment of the present invention, in particular, by using the disc 1 The axial cleaning mechanism 91 with a clearance under the center hole causes the disc 1 to rotate due to the flow caused by water as a medium, so that uneven separation can be prevented. When the ultrasonic generator 22 is stopped, the table can be moved 8〗 Upright ^ When the movable table 81 is upright, the disc 1 can be taken out of the cleaning mechanism 91. Disc 1-the gold reflective layer lb and the ultraviolet curing top coating & has been separated there including recording dyeing The layer lc and the polycarbonate substrate id are shown in Fig. 5. After separation, the UV-cured top coat la and the gold reflective layer lb float or sink in the water 丨 j. _-13- Use China ^ SiTcNS) ΔβΤ ^ ΤΤί〇χ 297 公 ¥ 1 (#Please read the notes on the reverse side and fill in this page) -5 ° # Ί. Printed by the K-Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs A7 _______________B7 V. Description of the Invention (11) ~~ Top Coating la and gold reflective layer lb can be easily made by netting or the like Separated from water as a medium, the gold reflecting layer lb is repeatedly used as a valuable material. Although 'according to the embodiment of the present invention, the ultrasonic generator operates only when the disc is in water, but the ultrasonic generation The device can be activated at any time. Weranjiro dyeing layer 1C is installed on the substrate ^, but the substrate resin can be used as a repeated use material by crushing or other processing. However, if there is a dyeing component Residual, the color will appear on the repeated use of the resin 'resulting in the limitation of the use after repeated use. It is recommended to dip the solvent or spray the solvent to dissolve the dyeing solvent to remove the recording dye layer 1 from the substrate Id ( Method of 5. Although there are no special conditions for the solvent used in the above method, a polycarbonate that does not affect the substrate Id and a solvent that can dissolve the dyeing component can be used. For example, ethanol, methanol, isopropanol, and n_ can be used. Alcohol solvents such as butanol; ethylene-1, 2-diols and glycerol; nitrocellulose solvents such as 2-methoxy alcohol and 2-ethoxy ethanol; and solvents such as 2_hydrocarbyl_2_fluorenyl_3_ Methyl ethyl ketone, hydrocarbyl 2-butanone Hydrocarbon ketone solvents such as 4-hydrocarbyl-4-methyl-2-pentanone. As a result, the recording dye layer lc is dissolved, and the resin of the substrate ld can be used repeatedly as a transparent tree. In this embodiment, if The use of a general-purpose solvent such as toluene or acetone causes the solvent to be absorbed by the polycarbonate substrate, which can cause difficulties in repeatedly using the resin of the substrate for 1 d. Furthermore, a mixture of solvents can be used, and if it contains' at least —The above solvent can achieve the purpose of the present invention by properly mixing ethanol and water, for example. If the above-mentioned solvent 纟 ultrasonic waves are used to process the disc i, the force will be as shown in Fig. 4 -14- (cns) --- : --- (Please read the note 11 on the back before filling this page)

A7 B7 V. Description of the invention (the water in the ultrasonic cleaning tank 21 shown in 12), when the reflective film lb is being separated from the substrate, the 'staining layer can be removed from the substrate. There is no particular limitation on the amount added, but' if the amount Too small will have gray effect, 1I1L t and the right number is too large, the ultrasonic effect will be halved, and there is a problem in handling organic solvents. Therefore, the amount is preferably 2% to 50% of Fan Yuan, and The range of 5% to 30% is optimal. Also, a mixture of solvents can be used. In addition, the separated metal reflective film and the protective layer shown in FIG. 5 are used to protect the component of the protective layer I, which is an organic substance. Evaporated by high temperature treatment, and can restore metal components early-to-early. High temperature treatment does not require special methods, and can be treated with an oven or the like. If the treatment temperature is higher than the melting point of the metal in the reflective film, it can promote Recovery of metal. An example of the method of repeatedly using a disc recording medium, which is described above and shown in Figure 10. Huang ^ 丄: It is preferable to open at least a protective layer in the disc. [Step S2 : Applying ultrasonic vibration to a disc in a liquid medium. The radioactive layer (metal film or metal layer) is separated from the substrate. Tong-S4 'obtains the gold reflective layer and protective layer (protective film) separated from the substrate. ^: By at a temperature close to the melting point of the metal reflective layer The gold reflective layer and the protective film are heated, for example, at about uoyc 'to remove the protective film from the gold reflective layer, thereby obtaining gold singularly. —MS6 N S7 ^ i: a solvent (shown in step S8.) Is contacted with the substrate Material, and the gold reflective layer has been separated from the substrate to stain / separate and restore the substrate (such as resin substrate). Free scale S9: Filter such as mechanical filter 15 obtained in step S6 · Please read it first, pay attention to the item, and then reiterate the standard in the Ministry of Economic Affairs. Af Industrial consumption af printed by the Zha Society. The paper size is applicable to the Chinese national standard (CNS> Λ4 Regulations (210X297 published on A7 B7) V. Description of the invention (13 Dyeing 'to completely separate impurities from the dyeing tincture .: The filtered dyeing is refined in a column, and pure dyeing is obtained in step sii. As described above, the polycarbonate group can be separated singly in step S7. Material, which can be obtained separately in step S5 Pure gold can be obtained in step sn. By recovering the resin substrate to be reused, it can be reused as a material for a substrate for a disc recording medium or the like. The recovered substrate Can be made into pellets to make polycarbonate resin pellets. In the following example, a recordable laser disc (product number MA.CDQ-74A) manufactured by Sony Corporation is used as a substrate, dyeing layer, and reflection. Disc with protective film and protective film. An ultrasonic cleaner (26 kHz, 600 watts) manufactured by Kaijo Corporation is used as an ultrasonic generator (ultrasonic emission device) for the repeated use device 100 shown in FIG. 4 22. Tap water acts as a liquid medium. (υ ultrasonic wave is applied to a disc suspended in a clean pool for ten minutes. The substrate with the dyed and protective film is bonded to the metal film, and the metal powder of the reflective film is cut away from each other. The substrate is taken out of the liquid In the future, the liquid is filtered to remove the protective film and metal powder adhered to the metal film, which are left in the air for drying. Printed by the Consumers Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs (please read the precautions on the back before filling in (This page) (2) The side of the protective layer of the disc is a grid-shaped trowel with a one-centimeter lattice—notch. Second, the metal powder of the protective film and the reflective film is separated; ^ After the substrate is taken out of the liquid, the The liquid is filtered to remove the adhesion to the metal film: the protective film and the metal powder, and left in the air for drying. Instead of using a razor, the notch tool 600 shown in Fig. 8 can be used.-(3) Approx. 2 X 2 cm square Fang Shigu 丨 cutting, and the ultrasonic wave is applied for five minutes while agitating. It has a dyed base material and is bound to a metal film. CNS) A view frame (2 丨 0X 297 public power A7 B 7 V. Description of the invention (μ 膜 膜 'and the metal powder of the reflective film are separated from each other ^ ^ ν. After the substrate resin is taken out of the night, the liquid is filtered to remove the protection of the dry film in the metal film Film; 5 belong to the powder 'and leave it in the air for drying. The protective film and metal part recovered and dried in method (3) to (3) were treated in an electric furnace at a temperature of UOOC for two hours. As a result, obtained Gold as a reflective film metal. (5) The substrate resin recovered in methods ⑴ to (3) is immersed in the following solvent for two minutes and then the 'dyeing solubility and effects on the substrate are summarized in the table below. Printed by Standard Bureau Shelley Consumer Cooperative [Table 1] Table 1 Effect of solvent dyeing solubility on substrates Methanol can be observed No ethanol can be observed No isopropyl alcohol can be observed No N-butanol can be observed No ethyl cotton can be observed ' 1,2-diol can be observed without glycerol can be observed without 2-methoxyethanol can be observed without 2-ethoxyethanol can be observed. Without 2-hydrocarbyl-2-fluorenyl-3-butanone Observable without 4-nicotyl-2-butane No. 4-Hydroxy-4-fluorenyl-2-pentanone can be observed without propyl hydrazone can be observed 'observable acetic acid 2-methoxyethane can be observed / observable ethanol / water (80 / 20) No 17-moderate I-degree ruled paper

SN No. 87111236 Patent Application A7 | Chinese Manual Correction Page (June 88) B7: 丨 · 4ΐ ^ νΤ7Γ V. Description of the Invention (15) [Table 2] Table 2 Effect of Solvent Dyeing Solubility on Substrate N-Hex Alkane anhydrous anhydrous [Table 3] Table 3 Solvent composition dyeing solubility water / ethanol (99/1) part water / ethanol (95/5) water / ethanol (80/20) water / Ethanol (60/40) water / ethanol (40/60) water / ethanol (99/1) water / ethanol (95/5) water / ethanol (80/20) Observable water / methanol (60/40) Observable water / methanol (40/60) Observable water / ethanol (100/0) Benefits (Please read the precautions on the back first (Fill in this page) The solvent in Table 1 printed by the Consumer Cooperatives of the Central Bureau of Standards of the Ministry of Economic Affairs can dissolve and dye, and will not affect substrates other than acetone and methoxyethyl ester. However, η-hexane and water in Table 2 cannot dissolve and stain. In addition, except for water / ethanol (1%) ', a solution having the composition in Table 3 can be dissolved and dyed. The present invention is applicable not only to CDs (laser discs) and CD-Rs, but also to other types of optical discs and magneto-optical discs, such as digital image discs (DVDs) and laser discs (LDs). In the embodiment shown in FIG. 4, FIG. 8 and the like, the discs 1 parallel to each other are generally hung down. -18-This paper size applies the Chinese National Standard (CNS) A4 specification (210X297 mm) A7 Central Ministry of Economic Affairs Consumption cooperative printing " V. Description of the invention (16) '----- Also clamped to the β-cleaning parts, however, individual discs can be held relatively straight or another-clamping method can be used. Moreover, single-disc or multiple discs can be held in the cleaning mechanism. The method of repeatedly using a disc recording medium according to the present invention can of course be applied to a disc recording medium having a structure shown in FIG. The disc recording medium shown in FIG. 3 is a so-called "high-density recording disc" and is called a DVD (digital video disc), in which a substrate having a similar structure is deposited with an adhesive layer B therebetween. The adhesive layer B adheres the protective layers L11 and L11, and the dyeing layer L9, the reflective film L10, and the protective layer LI1 are deposited on each substrate L8 in this order. Although ultrasonic vibration from an ultrasonic generator is used to vibrate the disc, other types of vibration generators may be used. Next, another embodiment of the present invention will be described with reference to FIG. 1 and FIG. 12. A device for recovering the metal reflective film 200 shown in FIG. 11 includes sensors 86 and 87, a metal reflective film removing tool 300, in addition to the unit of the repeated use device 100 shown in FIG. 4, and A nozzle 45a as a fluid spraying device. The device for restoring the metal reflection film 200 includes an ultrasonic cleaning tank 21 as a container, an ultrasonic generator 22 as a vibration tool, an operation unit 260, a metal reflection film removal tool 300, and a fluid spraying tool. Nozzle 45a. The ultrasonic cleaning tank 21 is detachably set or fixed on a bottom frame 31. One of the mounting plates 85 of the operating unit 260 is also fixed on the bottom portion 31 vertically. A cylinder (driving tool) 82 of the operation unit 260 detects a stop position of a movable table 81 in response to signals from an upper sensor 86 and a lower sensor 87. • 19- This paper size applies to China National Standards (CNS) Λ4 specification (210X297)-(Notes on the back of the poem before reading and then fill in this one) 丨 clothing--order 01. Ministry of Economic Affairs Central Standards Bureau A7 printed by China F cooperative __ _ ^ __ B7 V. Description of the invention (17) 'The ultrasonic generator 22 is located on the bottom end of Zhao Yinbo's clean pool 21, a water outlet 41 is nearby, and a metal reflective film removal tool 300 is provided between the water outlet "and the nozzle 45a. The metal reflection film removing tool 300 is housed in a support 99, the water outlet 41 is connected to a mechanical filter 42, and a tube 47a is interposed therebetween. Mechanical One outlet of the filter 42 is connected to a pump 43 with a tube 47b in between. One outlet of the pump 43 is connected to a directional valve 44 and one tube 47c is in between. One of the directional valve 44. The outlet is connected to a nozzle 45a A tube 47d is in between. The other outlet of the directional valve 44 is located directly above a discharge container 46. When the water 11 as the medium is replaced, the water is received in the discharge container 46 by switching over the directional valve 44 and the nozzle 45a Located above the ultrasonic cleaning pool 21. When the metal reflective film is separated and restored During the execution, the water in the ultrasonic cleaning tank 2 is 11 and the ultrasonic cleaning tank 21, outlet 41, tube 47 &, mechanical filter 42, tube 47b, pump 43, tube 47c, directional valve 44, tube 47d, nozzle 45a, and the sequence of the ultrasonic cleaning tank 21 is circulated therebetween. Fig. 12 shows an example of a control block diagram of the device for recovering the metal reflective film 200 and shown in Fig. U. The controller 71 is connected to the switch 72 and the upper end. Sensor 86, pneumatic table cylinder 82 'lower end sensor 87, ultrasonic generator 22, and pump 43. Next, the device shown in FIGS. 11 and 12 for restoring the metal reflective film 2000 will be described. The control state 71 lowers the pneumatic table cylinder 82 in response to the signals from the start switch 72 and the upper sensor 86, and the controller 71 operates the ultrasonic generator 22 and the pump 43 in response to the signals from the lower sensor 87. In a predetermined time enough to be separated weeks-20-This paper size applies to China National Standards (CNS) Λ4 Regulations (210X 297g ^) '" (Please read the precautions on the back I and fill in this X first) Order HH — ^ Ϋ I Two m A 7 --- ~~ -----_ B7 V. Description of the invention (18). ~ Period The controller 71 stops the ultrasonic generator 22 and raises the pneumatic table cylinder 82. Upon receiving a signal from the upper sensor ⑶, the controller 71 is enough to remove the golden reflection that has been rebonded to the disc. The pump 43 is stopped after a predetermined time period of the layer lb and the top coating u. The separated disc operator removes it with the cleaning mechanism 91, and the unseparated disc is installed on the cleaning mechanism ". When the start switch 72 is operated by the operator When depressed, the series of operations are repeated. When the disc 1 is being separated in the ultrasonic cleaning tank 21 and when the separated disc is raised-, the pump is operated for a predetermined time period. By circulating the water 11 during and after the separation, the gold filter layer 1b or the like in the water 11t or floating or sinking is recovered by the mechanical filter 42 after the disk i is separated. Unless the gold reflective layer ib and the UV-curable resin top coating layer 1 a are restored at an appropriate time, the operation of the entire restored reflective film may cause the separated gold reflective layer lb to adhere to the disc again. This will reduce the recovery percentage of all reflective films and the like. By working the spirit for a certain period of time, the water n from the nozzle 45a cleans the gold reflective layer lb adhered to the disc] and returns it to the ultrasonic cleaning tank 21, which is therefore a mechanical filter 42 recovery. The gold reflective layer-1 b separated according to the above-mentioned "operation" can be effectively restored. Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs. Referring to Figures I3 and 14 ', other embodiments of the present invention will be described, which are modifications of the device shown in Figure 11. Figures I3 and 14 individually show the fluid spraying equipment 400 and 500. The fluid spraying equipment 400 shown in Figure 13 includes a high-pressure air source 401 and a nozzle 45b connected to a high calendar air source 401. The high-pressure air from the high-pressure air source 4〇ί can be sprayed on the disc above the elevated cleaning mechanism 91 through the nozzle 45b! on. The spray of high-calorie air makes the gold that has been separated by the disc 1 but still adhered to the disc -21- This paper size applies to China National Standard 1 (CNS) (210 × 297々 > 1Γϊ) Explanation (19) * The reflective layer 1b is dropped from the polycarbonate substrate 1 £ 1 of the disc 1 into the water 11 of the ultrasonic cleaning tank 21. The fluid spraying machine 5 shown in FIG. 14 includes a water source 5 i and—the nozzle 4 5 a 'water from the water source 501 is sprayed on the gold reflective layer. etc. above, it is adhered to the disc installed on the cleaning mechanism 91], and the gold reflective layer lb and the like are formed by the disc j (poly The carbonate substrate id is removed and dropped into the water n of the ultrasonic cleaning pool 21 to be restored. Therefore, the gold reflection layer drilled on the disc 1 again can be reliably restored in the water 11 Moreover, a high-pressure air flow and a water flow can be used at the same time. Figs. 15 and 16 show examples of the cleaning mechanism 91, which can be applied to the embodiment shown in Figs. 4 and u. The cleaning machine shown in Fig. 15 The groove 91k of the component 91 is approximately a ^ _ shaped cross section, and the maximum width b of the groove 91k is wider than the width of the disc! The groove 91j shown in FIG. 16 is approximately Trapezoidal cross section, and the maximum width B of the groove 91j is wider than the width a of the disc 1. The cleaning member 91 may have a groove with a semicircular or oval cross section. Next, reference will be made to FIGS. 8 to 20. Central Bureau of Standards, Ministry of Economic Affairs Figure 8 printed by BIG Consumer Cooperative shows a notch tool 600 for actively notching the gold reflective layer lb and the ultraviolet curing resin top coat la. The notch tool is used for The device 100 shown in FIG. 4 is used repeatedly or the device for restoring the metal reflective film 200 shown in FIG. Η is used to restore the substrate and metal. Previously, the gold reflective layer lb and the ultraviolet curing resin in the disc 1 were top-coated. Layer la notched device. According to the embodiment shown in Figure 4 and Figure 11, one used disc, one in production -22- This paper size applies to China ^ house standard 隼 (saige (21〇χ297 " Public Weep) A7 A7 Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs B7 V. Description of the invention (20) Defective discs during the process, or—unused discs are installed on the cleaning mechanism 91 in their original state And the gold reflective layer 1] in the disc 丨 and ultraviolet curing The resin topcoat layer 1 a is separated and restored. On the other hand, the use of the notched tool 600 shown in FIG. 8 is to use the gold reflective layer ib in advance with the patterns shown in FIGS. 9 17 18, 19 and 20 And the UV-curable resin top coating layer 1 a is actively notched, the substrate of the device for repeating the use of the device shown in FIG. 4 or the device for restoring the metal reflection film 200 shown in FIG. The efficiency can be enhanced. The notch tool 600 includes a setting section 58, a setting plate 56, a support plate 57, two linear guides 53 and 53, and a metal mold 51. The metal mold 51 is fixed to the bottom ends of the linear shafts 52 and 52 of the linear guides 53 and 53, and the center of the metal mold 51 is fixed to a rod 55a of an air cylinder 55. The disc 1 is arranged so that the gold reflective layer 11} under the label surface and the UV-curable resin top coating layer 1a are opposed to the metal mold 51. A plurality of protruding portions 59 for forming grooves are formed on the bottom surface of the metal mold 51. The shape of the protruding portions 59 is such that the notched patterns shown in Figs. 9, 1.7, 18, 19, and 20 are made on the label surface of the disc 1. side. The gold reflection layer 丨 b and the ultraviolet curing resin top coat la of the disc 1 shown in FIG. 9 have lattice-shaped openings lf, and the gold reflection layer lb and the ultraviolet curing resin top coat la shown in FIG. 17 have parallel openings lg, FIG. 18 The gold reflective layer lb and the UV-curable resin top coat la shown have radial openings rh, and the gold reflective layer lb and the UV-curable resin top coat la shown in FIG. 19 have concentric openings. The gold reflective layer ib shown in FIG. 20 And UV-curable resin top coating la with random openings lh 〇-23- This paper size applies Chinese National Standards (CNS) Λ4 specifications (210 × 297 male waste) (谙 Please read the precautions on the back before filling this page) bundle --- ---, 玎 --- # Ί A7 B7 Printed by the Consumers' Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs 5. Description of the invention (21) When the cylinder 55 of the open-end machine 600 shown in FIG. 8 is operated, the metal mold 51 moves along The linear guides 53 and 53 move downward in the Z1 direction. Therefore, the patterns shown in Figs. 9'17, 18, 19, and 20 can be notched on the gold reflective layer 1b and the ultraviolet curing resin on the label surface side of the disc i. Top coating la. As described above, by using the protruding portion 59 (edge) of the metal mold 51 to make a preliminary cut on the gold reflective layer lb and the ultraviolet curing resin top coating layer 13, the separation and restoration of the gold reflective layer lb can be performed by using FIG. 4 or FIG. The device shown in n for restoration, a metal reflective film is performed in a short period of time. Next, referring to Figs. 21 to 24, other embodiments of an apparatus for recovering a metal reflective film according to the present invention will be described. The embodiments shown in FIGS. 21 to 24 can be applied to the repeated use device shown in FIG. 4 and the device shown in FIG. 11 for restoring a metal reflective film. The cleaning mechanism 91 shown in FIG. 21 has a plurality of grooves at a given distance. Thus, the center hole of the disc 1 can be supported in the groove 91h. Fig. 22 shows a state in which when the disc 1 is held on the cleaning mechanism 91 shown in Fig. 21 ', the gold reflective layer b of each disc 1 is notched with the notched mechanism 700 as the notched mechanism. When the top of the disc i is clamped by the -disc fixing mechanism 75 °, the bottom of the disc 丨 can be notched by the notched mechanism_edge-7_notch. That is, when the notch mechanism 700 is moved in the XI direction, the 矣 — 雄 # person disc 1 cardinal to the reflective layer lb and the ultraviolet curing resin top coating 1 a are opened here, and the top of the disc '1 is marked with an amino group. Methyl Ethyl Acetate Rubber 751 is elastically supported on the disc fixing mechanism ... Amino Methyl Ethyl Acetate is fixed on the steel 752. The disc fixing mechanism 75 ° forces the disc 1 downward with a force ^. Therefore, the edge 710 will make the gap shown in FIG. 24-24- (21〇χ29? Ά) (Please read the precautions on the back before filling (This page) * 1T A7 B7 Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs. 5. Description of the invention (22 on the gold reflective layer ib and the UV-curable resin top coating layer la. The notch mechanism 700 ′ of the notch machine no longer needs to use the notch machine 00 shown in FIG. 8 to initially open the gold reflection layer lb and the UV-curable resin top coat la ^ and, as shown in FIGS. 6 and 15 As shown in FIGS. 16 and 22, if the cleaning mechanism is formed such that a plurality of discs i are supported at a given distance, the gold reflective layer separation can be performed on many discs at the same time without the discs touching each other. Because the water 11 as a medium flows between adjacent discs, uneven separation is not easy to occur. Preferably, the width of each groove is larger than the width of the disc, so that the disc can rotate in response to the water flow. About In terms of handling, such as installing a disc in a cleaning machine The part 91 is loaded and unloaded. According to the embodiment of the present invention, the installation and the unloading are performed manually. However, this process can be automated by using a robot, a hollow gripper, and the like. Moreover, the gap can be integrated during automatic transportation. In the device, after the disc is notched with the notch tool 600 (notch mechanism) shown in Fig. 8, the notched disc is mounted on the cleaning mechanism 91. It should be understood that the present invention is not limited to the above Embodiment In the embodiment shown in FIG. 14, water is used as a medium. However, another type of medium can be used as follows. The water used as a medium during ultrasonic transmission does not need to have purity, and can be added if necessary. For example, by adding a surfactant to the water, the separation can be accelerated, the water is effectively drained after treatment, and the reflective film is prevented from re-adhering to the disc. Moreover, there are no special temperature conditions during ultrasonic emission, and it can be used in Good results were obtained at room temperature. Also, water (please read the precautions on the back before filling out this page) _ .01. __ -25- A7 A7 Printed by the Consumers' Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs V. Description of the invention (23)-A mixture of other types of media can be used instead of water. For example, a mixture of water and ethanol, a mixture of water and methanol can be used. Moreover, although ultrasonic vibration from an ultrasonic generator is used With vibrating discs, other types of vibration generators can also be used. The grooves used to support the discs can be roughly diagonal in cross section. The present invention is not only applicable to CDs (laser discs) and cd_Rs (recordable lasers) Discs), can also be applied to other types of optical discs and magnetic discs, such as '' Digital Video Discs (DVDs) and Laser Discs (LDs). In the embodiment shown in Figure 4, Figure 讥, etc., each other The parallel discs i are clamped approximately vertically to the cleaning mechanism, however, individual discs may be clamped obliquely in the vertical direction, or other clamping methods may be used. Moreover, single-disc or plural discs can be held on the cleaning mechanism. Moreover, it is preferable that the edge 71 of the notched part shown in FIG. 23 has a sharp point, for example, a point at which the angle Θ is 30 degrees, so that a deep notch is made by stress concentration. Even in this embodiment, since the disc i is bent, the notch can be made using elastic force (elasticity). In this embodiment, the number of notches is one or less, and the width of the edge 710 on the notched part shown in FIG. 22 is, for example, 160 mm. Regarding the metal reflective film, materials other than gold can also be used, according to the size of the disc _ 26 _ This paper is applicable to the paper size------- ㈢ 豕 ㈢ & MOU (CNS) Α4 Regulations (210X297mm t)- -------: ϋι-,-. Ί, κ- (please read the back. 5-ί 事项 意 事, and fill in this page) order el. A7 Printed by the Consumers' Cooperative of the Central Standards Bureau, Ministry of Economic Affairs No. 87111236 Revised page of Chinese specification of patent application (June 88) B7 V. Description of Invention (23a) Symbol Description of Schematic Elements 1 Disc 47c Tube la Top Coating 47d Tube lb Gold Reflective Layer 51 Metal Mold lc Record Staining Layer 52 Linear Axis Id Polycarbonate substrate 53 Linear guide le Guide groove 55 Cylinder If notch pattern 55a Rod lg Parallel opening 56 Setting plate lh Radial opening 57 Support plate lj Concentric opening 58 Setting section 11 Water 59 Protruding section 21 Ultrasonic cleaning Cell 60 Operating unit 22 Ultrasonic generator 71 Controller 31 Bottom 72 Start switch 41 Exit 81 Mobile table 42 Mechanical filter 82 Pneumatic table cylinder 43 Pump 82a Rod 44 Directional valve 83 Lower stopper 45a Nozzle 84 Upper end stop 45b nozzle 85 Mounting plate 46 Drain container 86 Sensor 47a tube 87 Sensor 47b tube 91 Cleaning mechanism (gripper) -26s-This paper size applies to China National Standard (CNS) A4 size (210X297 mm) (please first (Read the notes on the back and fill out this page)

Printed by the Consumer Standards Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs No. 87111236 Patent Application A7 Revised Chinese Manual (June 88) B7 V. Description of the Invention (23b) 91h slot 91j slot 91k slot 99 Support 100 Repeated use device 101 Controller 102 Starter switch 200 Metal reflective film 260 Operating unit 300 Operating unit removal equipment 400 Fluid spraying equipment 401 High-pressure air source 500 Fluid spraying equipment 501 Water source 600 Notched equipment 700 Notched equipment 710 Edge 750 Fixing mechanism 751 Carbamate Ethyl rubber 752 Steel L1 Protective layer L2 Ming reflective film L3 Polycarbonate substrate L4 Protective layer L5 Reflective film L6 Dyed layer L7 Substrate L8 Substrate L9 Dyed layer L10 Reflective film L11 Protective layer (Please read the back Please fill in this page for the matters needing attention) Binding · 26b · This paper size is applicable to China National Standard (CNS) A4 (210X297mm)

Claims (1)

Patent No. 87111236 Chinese Patent Application Amendment (June of the Year) g 6. Scope of patent application 1. 2. 3. 4. Employees' cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs of the People's Republic of China 5. A method for repeatedly using disc memory media, including the steps of: clamping disc memory media in a liquid In the medium, the disc memory medium has a layered structure including a substrate, a dyed layer, a reflective film, and a protective layer; the ultrasonic wave is emitted on the disc memory medium to separate the substrate and the reflective film from each other ; And contacting a solution with the substrate separated by the reflective film, and separating the dyeing layer from the substrate to restore the substrate, the solution can dissolve the dyeing layer. For example, the method of repeatedly using the disc memory medium in the scope of the patent application includes the following steps: before the disc memory medium is irradiated with ultrasonic waves, the protective layer or the protective layer and the reflective film are initially opened, so that The substrate and the reflective film are separated from each other. For example, the method for repeatedly using a disc memory medium in the scope of application for item i includes the step of heating the reflective film separated from the substrate to evaporate the components of the protective layer attached to the reflective film. For example, the method of repeatedly using the disc memory medium in the scope of application for the patent i :, which also includes the step of adding a solution for dissolving the dyeing layer on the liquid medium before the disc memory medium is irradiated with super bone waves. In order to separate the substrate from the reflective film. -A device for restoring a metal reflective film, the metal reflective film is formed in a-disc memory medium, the device includes: a container for supporting a liquid medium;-an operating tool for holding the memory medium and placing the memory medium in n n I I n I n -I I (#Please first read the notes on the back and then fill out this page) Order No. 87111236 Patent Application Chinese Patent Application Amendment (June of the Year) g 6. Scope of patent application 1. 2. 3. 4. Employees' cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs of the People's Republic of China 5. A method for repeatedly using disc memory media, including the steps of: clamping disc memory media in a liquid In the medium, the disc memory medium has a layered structure including a substrate, a dyed layer, a reflective film, and a protective layer; the ultrasonic wave is emitted on the disc memory medium to separate the substrate and the reflective film from each other ; And contacting a solution with the substrate separated by the reflective film, and separating the dyeing layer from the substrate to restore the substrate, the solution can dissolve the dyeing layer. For example, the method of repeatedly using the disc memory medium in the scope of the patent application includes the following steps: before the disc memory medium is irradiated with ultrasonic waves, the protective layer or the protective layer and the reflective film are initially opened, so that The substrate and the reflective film are separated from each other. For example, the method for repeatedly using a disc memory medium in the scope of application for item i includes the step of heating the reflective film separated from the substrate to evaporate the components of the protective layer attached to the reflective film. For example, the method of repeatedly using the disc memory medium in the scope of application for the patent i :, which also includes the step of adding a solution for dissolving the dyeing layer on the liquid medium before the disc memory medium is irradiated with super bone waves. In order to separate the substrate from the reflective film. -A device for restoring a metal reflective film, the metal reflective film is formed in a-disc memory medium, the device includes: a container for supporting a liquid medium;-an operating tool for holding the memory medium and placing the memory medium in n n I I n I n -I I (#Please read the notes on the back before filling this page) Order A8 B8 六 、 Scope of patent application 〃 The liquid medium in the container, and the memory medium is taken out after the metal reflective film is restored; and a vibrating tool for vibrating the memory medium disposed in the liquid medium to separate the metal reflective film from the memory medium And restore the metal reflective film in the liquid medium in the container. 6. The device for restoring a metal reflective film according to item 5 of the patent application scope, wherein the vibration implement is an ultrasonic generator for generating an ultrasonic wave. 7. If the device for recovering the metal reflective film is applied for item 5 in the scope of application, it also includes an opening device for opening the disc memory medium before the memory medium is placed in the liquid medium in the container. π. 8. For the device for recovering the metal reflective film according to item 5 of the patent application scope, wherein the operating tool for the memory medium includes a fluid spraying tool for performing the process of recovering the metal reflective film on the memory medium and the memory medium is composed of After taking out the container, spray the fluid on the memory medium. Printed by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs (please read the precautions on the back before filling out this page) 9. If the device for recovering the metal reflective film in the scope of patent application No. 5 is used, the operating tools for memory media It includes a holder for holding a plurality of memory media at a given distance, and a driving tool for placing the holder in the liquid medium in the container and removing the holder from the liquid medium in the container. . 10. The device for restoring a metal reflective film according to item 9 of the scope of patent application, wherein the holder is an axial direction, and the holder includes a slot for supporting a central hole section of a memory medium at a given distance, and the memory Media is clamped, -2-This paper size adopts Chinese National Standard (CNS) A4 size (210X297mm) A8 B8 六 、 Scope of patent application 〃 The liquid medium in the container, and the memory medium is taken out after the metal reflective film is restored; and a vibrating tool for vibrating the memory medium disposed in the liquid medium to separate the metal reflective film from the memory medium And restore the metal reflective film in the liquid medium in the container. 6. The device for restoring a metal reflective film according to item 5 of the patent application scope, wherein the vibration implement is an ultrasonic generator for generating an ultrasonic wave. 7. If the device for recovering the metal reflective film is applied for item 5 in the scope of application, it also includes an opening device for opening the disc memory medium before the memory medium is placed in the liquid medium in the container. π. 8. For the device for recovering the metal reflective film according to item 5 of the patent application scope, wherein the operating tool for the memory medium includes a fluid spraying tool for performing the process of recovering the metal reflective film on the memory medium and the memory medium is composed of After taking out the container, spray the fluid on the memory medium. Printed by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs (please read the precautions on the back before filling out this page) 9. If the device for recovering the metal reflective film in the scope of patent application No. 5 is used, the operating tools for memory media It includes a holder for holding a plurality of memory media at a given distance, and a driving tool for placing the holder in the liquid medium in the container and removing the holder from the liquid medium in the container. . 10. The device for restoring a metal reflective film according to item 9 of the scope of patent application, wherein the holder is an axial direction, and the holder includes a slot for supporting a central hole section of a memory medium at a given distance, and the memory The media is clamped, -2-This paper size adopts Chinese National Standard (CNS) A4 specification (210X297 mm) A8 B8 C8 Gas < -V__ 6. The scope of patent application is so that it can be moved relative to the container. 11. The device for restoring a metal reflective film according to item 5 of the patent application, which further includes a metal reflective film removing device for removing metal from the liquid medium after the metal reflective film is separated and located in the liquid medium. Reflective film. 12. —A method for restoring a metal reflective film, the metal reflective film is formed in a disc memory medium, the method includes the steps of: placing the memory medium in a liquid medium in a container; applying vibration to the liquid medium On the memory medium in the medium, the metal reflective film is separated from the memory medium and the metal reflective film is restored in the liquid medium; and the separated metal reflective film in the liquid medium is removed from the liquid medium. 13. The method for restoring a metal reflective film according to item 12 of the patent application, wherein the vibration applied to the memory medium is ultrasonic vibration. 14. The method for restoring a metal reflective film according to item 12 of the patent application, which further includes the step of notching the memory medium before the vibration is applied to the memory medium placed in the liquid medium. Printed by the Consumer Cooperatives of the Central Bureau of Standards of the Ministry of Economic Affairs (please read the precautions on the back before filling out this page) 15. If the method for recovering the metal reflective film in item 12 of the patent scope is applied, the steps include: After the process of restoring the metal reflective film is performed on the memory medium and the memory medium is taken out from the liquid medium, the fluid is sprayed on the memory medium. -3- This paper size adopts China National Standard (CNS) A4 specification (210X297 mm) A8 B8 C8 gas < -V__ VI. Scope of patent application so that it can move relative to the container. 11. The device for restoring a metal reflective film according to item 5 of the patent application, which further includes a metal reflective film removing device for removing metal from the liquid medium after the metal reflective film is separated and located in the liquid medium. Reflective film. 12. —A method for restoring a metal reflective film, the metal reflective film is formed in a disc memory medium, the method includes the steps of: placing the memory medium in a liquid medium in a container; applying vibration to the liquid medium On the memory medium in the medium, the metal reflective film is separated from the memory medium and the metal reflective film is restored in the liquid medium; and the separated metal reflective film in the liquid medium is removed from the liquid medium. 13. The method for restoring a metal reflective film according to item 12 of the patent application, wherein the vibration applied to the memory medium is ultrasonic vibration. 14. The method for restoring a metal reflective film according to item 12 of the patent application, which further includes the step of notching the memory medium before the vibration is applied to the memory medium placed in the liquid medium. Printed by the Consumer Cooperatives of the Central Bureau of Standards of the Ministry of Economic Affairs (please read the precautions on the back before filling out this page) 15. If the method for recovering the metal reflective film in item 12 of the patent scope is applied, the steps include: After the process of restoring the metal reflective film is performed on the memory medium and the memory medium is taken out from the liquid medium, the fluid is sprayed on the memory medium. -3- This paper size adopts Chinese National Standard (CNS) A4 specification (210X297 mm)