TWI309601B - - Google Patents

Description

</ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> <RTIgt; Formation of a stack of other optical disc substrates. [Prior Art] Conventionally, a stacking substrate (Stack Rib) optical disk substrate and a manufacturing method thereof are disclosed in Patent Document 1 and Patent Document 3; Patent Document 1 discloses that a plurality of optical disk substrates are formed on both sides; According to Patent Document 1, since a plurality of layers are formed on both sides, a wide flat surface cannot be secured on one side, and a wide range of printing or the like cannot be performed. Therefore, the manufactured optical disk product has a problem of poor appearance. In addition, Patent Document 2 discloses a disc substrate in which a stack of strips is formed on the inner surface side of the mold base claw portion. However, Patent Document 2 has a concave portion on the opposite surface of the stacker strip to form a mold base mark, and thus cannot be described above. On the opposite side, a wide _ flat level is ensured, so the manufactured disc product has a problem of poor appearance. The case of Patent Document 1 is disclosed in FIG. 5 of Patent Document 3, and a general case is disclosed in FIG. 3, and the radial direction position of the stacking strip in Patent Document 3 is set in the same manner as the claw portion of the female mold base. The position of the concave portion; however, the reference 3 belongs to the method of changing the surrounding direction to set the width and thickness of the stacking strip, and then fitting the recess of the female mold seat to the stacking strip, or overlapping the spacers to overlap the optical disc substrate However, in Patent Document 3, the concave portion formed by the claw portion of the female mold seat is slanted on the opposite surface of the stacking strip, so that it is impossible to ensure a wide flat horizontal surface on the opposite surface. 1309601 Bad question. Japanese Laid-Open Patent Publication No. 2006-12331 (Request for Item, Figure j, Patent Document 2: Special Open Leak- 2〇 Bulletin (_, Fig. ι〇). Patent Document 3: JP-A-2002-251784 (Request) 3, FIG. 5, FIG. 8, FIG. 9, and FIG. 1). [Summary of the Invention]

- The technical problem to be solved:

Patent Document 1 Fig. 3, Fig. 4). In view of the above problems, an object of the present invention is to provide a disc substrate forming mold for solving the problem of poor appearance of a disc produced by a flat horizontal surface on the opposite side of the stacking strip, which is incapable of ensuring a disparity (5); The prefabricated __substrate wire disc product; furthermore, various problems in solving the above-mentioned optical disc substrate formation or manufacturing of the optical disc product are provided; and the subject matter of the present invention is limited to a specific silk substrate and a specific optical disc product, and is used for The separately read laser light can also be used on short-wave spicy blue laser light or blue laser light blue-ray disk. The optical disk substrate forming mold according to claim 1, wherein the optical disk substrate formed by the optical disk substrate is formed in a cavity formed between the first mold and the second mold. In the forming mold, the first mold is provided with a mother mold for forming a signal surface, and an annular recess of a stack of Ribs is formed on the inner peripheral side of the mounting female mold portion; the second mold has a mother body The mold and the annular recess form a flat surface formation surface in a portion where the opposing portions are provided. 1309601 The optical disc substrate forming mold according to claim 2, wherein the first mold according to claim 1 is a movable mold, and an outer cutter that can form a center hole of the optical disc substrate in a forward manner is disposed. An annular recess is provided between the outer outer cutter and the inner peripheral female mold claw portion of the female mold. The sleeve member according to claim 3, wherein the sleeve member is disposed in the inner peripheral hole of the movable mold inner peripheral mold base according to claim 2, and at least the cavity forming surface is formed. There is a portion of the annular recess used to form the stack of strips. The optical disk substrate forming method according to claim 4, wherein the optical disk substrate forming mold according to claim 1 is formed on a surface of the optical disk substrate, and the inner peripheral side of the signal surface The stacking layer protrudes from the signal surface; the other side forms a flat horizontal surface which is opposite to the signal surface and the stacking strip. The optical disk product manufacturing method according to claim 5, wherein the signal is formed on one surface of the optical disk substrate formed by the ruthenium substrate forming method according to claim 4, except for the stack layer A protective layer is disposed on the surface; and the flat surface is formed on the opposite side of the signal surface and the stacking strip, and the horizontal surface is subjected to surface treatment. According to the invention, the substrate of claim 6 is characterized in that the surface of the substrate is formed on the surface, and the surface of the substrate is formed on the surface, and the signal surface is formed on the surface, and the inner surface of the signal surface is formed on the inner surface of the signal surface. The signal surface protrudes from the stacking strip; the other surface forms a flat horizontal surface on the portion opposite to the signal surface and the stacking strip. The product of claim 7 is characterized in that, on one side, a signal surface of the optical disk substrate is provided, and on the other side, a surface material is disposed; in the light county (four)-surface Forming a signal surface and a stack of strips protruding from the signal surface on the inner side of the signal surface, and providing a protective layer on the signal surface in addition to the stacking strip; the other side of the optical disc substrate is as described above The signal surface and the layer of the bedding layer are arranged to face each other to form a flat horizontal surface. The horizontal surface has a surface treatment. 2. The effect of the prior art: The optical disk substrate forming mold of the present invention belongs to a disk substrate forming die formed by forming a disk substrate between the first mold and the second mold, and the first mold is formed thereon. a master mold of the signal surface, and an annular recess forming a stacking strip (Stack Rib) on the inner peripheral side of the mounting portion; the second mold is disposed opposite to the master mold and the annular recess Forming a flat horizontal surface, so that the formed signal surface of the optical disk substrate and the opposite surface of the optical disk substrate can ensure a wide horizontal plane on the signal surface and the opposite layer on the stacking layer, without It creates obstacles in the formation and cooling of optical disc substrates. Furthermore, it is also possible to manufacture optical disc products with beautiful appearance. [Embodiment] An optical disk substrate forming mold according to an embodiment of the present invention will be described with reference to Fig. 1. Fig. 1 is a cross-sectional view showing a main part of an optical disk substrate forming mold of the present embodiment; 11 for forming sheet thickness 1.1 coffee, diameter 12 dish 1 (all with forming error) Blu-ray disc (according to Blue_ray 1309601

Disc Rewritable Format, which is a registered trademark). The optical disk substrate forming mold 11 shown in Fig. 1 includes a movable mold 12 of a first mold and a fixed mold 13' of a second mold, and a variable volume is formed between the two molds I and 13 of the mold clamping. The movable mold 12 mounted on the movable plate of the injection molding machine not shown in the drawings includes a movable side mirror panel 15 that is not attached to the movable inner panel of the drawing, and is disposed on the mirror panel 15 The surface of the mother die 16 forming the signal surface and the inner peripheral hole of the mirror panel 15 are supported to support the inner peripheral die holder 17 of the female die 16 and the inner peripheral hole of the inner peripheral die holder 17 The fixed sleeve 19, the ejector sleeve 20 disposed in the inner peripheral hole of the fixed sleeve 19, and the cylindrical outer cutter 21 disposed in the inner peripheral hole of the ejector sleeve 20 are inserted into the outer cutter 21 The protruding pin 22 of the inner peripheral hole supports the outer peripheral portion of the female die 16 and is not shown in the outer peripheral die holder of the drawings. Each part of the movable mold 12 of the first mold is described in detail; the mirror panel 15 is a thin cylindrical member, and the surface 15a on the side of the cavity 14 is mirror-finished; in addition, the inner surface of the mirror panel 15 (adhered to the movable inner panel) A cooling medium flow path 15b for flowing the cold medium is formed; the closing mold base 17 belongs to the cylindrical member, and the outer peripheral end of the cavity axis φ is provided with a claw portion of the fixed portion 16 in the present embodiment. 18 The outer peripheral end can be set to a diameter of 22.3 face and the claw #18 shape is south degree 0. limn~0.4 leg, the protruding dimension from the main body portion to the female mold 16 side is about 〇·2 mm; the thickness of the female mold 16 About 〇.2mm~〇.6 咖度', on the surface, a signal is formed on the optical disk substrate 1309601. The signal surface D2 can also form a fine convex portion of the D1 signal surface D2. Furthermore, it is used as a recording type optical disc. Ditch and so on. The fixing sleeve 19 is a cylindrical member, and the stripping air can be ejected from the gap 23 of the inner peripheral mold base η 2; further, the gap phantom position is set to a diameter of 17. Gmm 〜 20 · 5 mm The range is the best; in addition, the size of this is the size at normal temperature; in addition, the cavity forming surface of the solid pipe 1 of the sleeve member is formed on the surface of the financial substrate D1.

(Stack Rib) part of the annular recess 24 of D3; the ejector sleeve 20 of the sleeve member comprises a cylindrical member 'when the disc substrate D1 is removed, it can be set by the money that is not marked in the figure Whereas, the portion of the cavity forming surface of the top H sleeve 2 is formed, and a partial annular recess 24 is formed to form the lion strip (10); therefore, the annular recess 24 in the present embodiment is formed on the inner circumference. The fixing sleeve 19 between the claw portion 18 and the outer blade 21 of the die holder 17 and the ejector sleeve 20 are provided. According to the description of the background art, the purpose of providing the stacking strip D3 on the optical disc substrate D1 is to laminate the cooled optical disc substrate di, so that the optical disc substrate (especially the signal surface) is not in contact with each other; The stacking layer D3 is preferably set to have a peripheral portion of 16 mm to 22 mm; further, it is preferably set on the Πηιιη~19. 5 mm portion; the width of the Rib bottom is 〇. 5咖〜5. In particular, the 疋 is 0. 8mm~2. The top width of the best stacking strip is 〇. lnim~ 2· 0mm is the best, and the Rib height is best from ◦·丨面~3 faces; therefore, 1309001 The annular recess 2 of the size of the riser layer D3 is formed on the closed side of the portion of the female mold 16 of the movable mold 12; further, even if the annular standing P 24 is not all continuous loops, Further, the plurality of concave and plural laminated strips D3 may be arranged in a ring shape at the annular position; in addition, the cross-sectional shape of the purlin D3 in the present embodiment is trapezoidal, but the upper side may be the r-shaped surface. , or the top is angular and other types. In addition, if the j-like recess 24 is provided in the portion between the outer blade 21 and the inner peripheral die holder w and the claw #18, the inner peripheral die holder π, the fixed sleeve 19, and the ejector sleeve may be disposed. One or more of the tubes 2 may be provided. Further, when the inner circumferential mold base and the fixed sleeve are the inner circumferential mold bases formed of the same member, they may be disposed on the inner circumferential mold surface. In the case of the above, it is preferable to provide the release air ejection hole 'in the inner side of the annular concave portion or the outer circumferential side of the annular concave portion. Alternatively, the annular concave portion 24 or the inner circumference of the annular concave portion 24 may be provided. Part of the mold base 17, the fixed sleeve 19, the push sleeve (4), or all of the hollow surface, the rough surface is processed into Rz0·05 qing~〇.4 qing to make it easier to remove the film. On the other hand, 'the second molded fiber 13 attached to the injection molding machine fixing plate of the unlabeled pattern, the fixed fiber panel 25 of the fixed inner panel of the type (four) type, and the inner peripheral hole of the mirror panel 25 Inserting the door 26, inserting the inner blade 27 disposed in the inner peripheral hole of the closing door 26, and the shroud sleeve 28 disposed in the inner peripheral hole of the inner blade 27, etc.; The part, the mirror panel 25 belongs to a thin cylindrical member, the cavity forming surface is removed, and the mirror surface processing is performed by the surface of the cavity forming surface 25a. Further, the rough surface of the cavity forming surface 25a is processed into Rz〇. 〇5 /zm~0·4// m, so that the valley is easy to release the film, the horizontal plane can also be embossed; in addition, the inner surface of the mirror panel 25 (adhered to the fixed inner panel) forms a cooling medium flow path 25b for flowing the cooling medium; Time. Air can be ejected from the gap 29 between the mirror panel 25 and the insertion gate 26; the inner peripheral hole of the inner knife is provided with the front end surface of the mouthpiece 28's mouthpiece 28, and the movable mold is opposed from the inner blade 27. Further, in the case of the inner blade, in the process of forming the burr of the center hole D5 of the optical disk substrate D1, only the inner peripheral hole side may be protruded on the opposing surface of the movable mold. Further, the cavity forming surface 25a of the mirror plate 25 of the fixed mold 13 and the cavity forming surface 26a of the insertion gate 26 and the cavity forming surface 27a of the inner blade 27 are each set at the same height, and the optical disk substrate D1 is formed. The horizontal surface is horizontally formed; therefore, when the optical disk substrate D1 is formed, the portion opposite to the optical disk substrate 讥 signal surface D2 forms a flat horizontal surface D6 (including the gap between the mold members and the flat definition of the micro burrs) Further, in the positional relationship between the movable mold 12 and the fixed mold 13, the fixed side mirror panel 25 is disposed in a slightly opposite manner to the movable side master mold 16; in addition, the inner peripheral female mold base 17 is fixed to the inner side The stern sleeve 19 is provided with the insertion gate π in a slightly opposite manner; further, the inner knives 27 are disposed in a slightly opposite manner to the ejector sleeve 20; The sprue bushing 28 is disposed in a facing manner, and the front end of the outer blade 21 that can be moved forward is fitted to the inner blade 27. 12 I3〇96〇l Next, the optical disc D1 formed by the optical disc substrate forming mold 11 of the present embodiment will be described with reference to FIG. 2, and the Blu-ray disc D (registered trademark) of the optical disc product manufactured by the optical disc substrate D1 will be described. (hereinafter referred to as "Blu-ray Disc D") and Blu-ray Disc D method; according to FIG. 2, an enlarged cross-sectional view of the Blu-ray disc of the present embodiment. First, the forming procedure of the optical disk substrate D1 will be explained. The mold clamping device of the injection molding machine not shown in the drawings is operated to move the movable mold 12 mounted on the movable tray, and the mold is closed; the movable mold 12 is thereby fitted to the fixed mold mounted on the fixed tray. 13 to form a variable volume cavity μ; next, after proceeding to the spiral of the injection device not shown in the drawing, the injection device is passed through the nozzle of the injection device and the fixed mold 13 of the nozzle 13 to make the injection device The molten resin in the cylinder is heated and injected into the cavity 14; the thermoplastic transparent resin in this embodiment is made of polycarbonate and is made of 3 Å. The nozzle temperature of 匚~340 C is injected and filled in the cavity μ; and, while the cavity 14 is filled with the molten resin, the mold clamping device is re-run, the movable mold 12 is advanced toward the fixed mold 13, and the cavity is compressed. The molten resin in the 14 is used for good copying; since the present embodiment is to form the optical disk substrate D1 for the Blu-ray disc D, the spacing between the aforementioned mother die 16 and the cavity-forming surface 25a of the fixed-side mirror panel 25 is approximately l. The movable mold 12 is stopped at the position of lmm. Next, 'the outer blade 21 of the movable mold 12 is pushed into the inner blade 27 of the fixed mold 13 to cut the gate' and open the center hole D5 of the optical disk substrate D1; then 13 1309601's embodiment is The outer blade 21 of the movable mold 12 forming the signal surface D2 is opened to the center hole D5. Therefore, the center hole D5' placed when the Blu-ray disc D is read does not have the problem of the burr of the placing portion D1. The molten resin filled in the cavity 14 is cooled and solidified by the cooled disk substrate forming mold U in parallel with the compression and the cutting gate, and is cooled and solidified in the cavity 14 and then connected. Then, the release air is ejected from the gap 29 between the mirror plate 25 and the insertion gate 26 of the fixed mold 13 and the gap 23 between the inner mold base 17 and the fixed sleeve 19 of the movable mold 丨 2; The stripping air is moved between the mold cavity forming surface and the disc substrate D1 while moving the movable mold 12 to perform mold opening; at this time, the annular recess 24 of the movable mold 12 is also ejected from the peripheral peripheral gap 23 The film air 'sends the air to the optical disk substrate di signal surface D2 and the stacking layer D3 of the movable mold 12 at the same time to easily release the film; the optical disk substrate D1 formed in the present embodiment and the cleaning not shown in the figure Then, when the mold is opened, the movable mold 12 is simultaneously moved, and at the completion of the mold opening position, the robot for the take-out machine, which is not shown in the drawing, adsorbs the horizontal plane D6 while passing through the ejector sleeve 2〇. Advance, and The film is completely removed from the movable mold 12, and at the same time, the cleaning pin 22 is completely separated from the optical disk substrate D1. The light-defining substrate D1 formed by the present embodiment forms a Blu-ray disc D as shown in FIG. 2; in other words, the thickness of the optical butterfly substrate D1 is L lmm, the diameter is 120 mm, and the diameter of the center hole D5 is 15 legs (both inclusive). Allowable forming error range); 14 '1309601 Further, on the surface of the optical disk substrate m (the surface formed below when reading), the claw portion 18 according to the inner circumferential die holder 17 is provided on the portion of the diameter 22 to 23ffm The outer peripheral end of the recessed portion D4 is formed on the outer peripheral side thereof by the mother die 16 to form the signal surface D2. Further, from the inner peripheral side of the recessed portion D4, the diameter is 16 to 22, and the outer peripheral end of the stacking strip D3 is formed. The recessed portion % is concentric; in addition, the signal surface D2 of the optical disk substrate D1 is disposed on the other surface (the upper surface formed during reading) in a direction opposite to the signal surface D2 or the stack; In addition to the components _ Wei wool, they all form a flat (four) horizontal plane D6. Next, the optical disk substrate D taken out by the robot is removed by cooling for the cooling type not marked by the ® type; the vertical direction pillar is disposed at the center of the cooling_storage, and the center is inserted into the center of the pillar. The hole D5 carries the optical disk substrate D1 in such a manner that the signal surface D2 of the bottom surface is horizontal; at this time, the stack substrate j) 3 is recognized on the optical disk substrate D1, and the front end surface of the stacked layer D3 is reasonably contacted to the lower optical disk substrate. On the horizontal plane D6 of D1, the light plates w, _ on the upper and lower sides can be stacked without contacting the horizontal plane D6 of D1 and the signal surface D2. After the cooling (including annealing process) of the optical disk substrate is completed, the optical disk substrate D1 is sent to the aluminum vapor deposition device to process the signal surface by aluminum evaporation, and is opened on the signal surface D2 to form a vaporized layer D7; Furthermore, the signal surface can be processed by other methods. The optical disk substrate m forming the aluminum vapor-drain layer D7 is provided with a protective layer rib for protecting the signal surface D2 (including the vaporized layer D7); The thickness of the protective layer D8 is (U_, the diameter (outer diameter) is the same as that of the optical disk substrate D1, and the central opening 15 1309601 is directly controlled (inner diameter) larger than the resin plate of the outer peripheral end of the concave portion D4 of the optical disk substrate D1, and the adhesive is adhered; Therefore, the central opening portion of the protective layer D8 is excluded from the portion of the stacking strip D3 of the optical disc substrate D1, so that the laminated strip rib does not cause an obstacle when the bonding is performed; further, the stacked strip D3 on the optical disc substrate D1 can also be By setting the degree to 〇·2mm or even 0·3mm' and moving it to the layer D, it is superposed without contacting the optical disk substrates D1 and D1; the formed protective layer is also removed from the description. Apply liquid resin on the signal surface D2 to rotate the optical disk substrate • D1, and then transparent The method of photohardening or irradiating infrared rays hardens the liquid resin to form the protective layer D8; in addition, the standard thickness of the protective layer D8 is 〇·ι_, but may also be in the range of 0. 05 mm or even 〇. The surface of the optical disk substrate D1 of the layer D8 is printed; the optical disk substrate D1 of the present embodiment is formed from the fully flat horizontal plane D6' near the center hole D5 or the center hole D5, because the signal surface is included] And the entire opposing surface of the stacking strip D3 is subjected to printing such as printing to form a printing layer, etc., so that a disc product having a good appearance can be produced; but it is not necessary to print the entire horizontal plane D6. Printing in the range of 8〇~1〇〇%; in addition, the surface treatment of the horizontal plane D6 can also be carried out without relying on printing, and other surface treatment methods such as adhesive tape or paper; in addition, generally according to the processing signal surface, The order in which the protective layer and the printing level are formed is performed, but the order of the printing process can also be changed. 'The Blu-ray disc D manufactured by the above-mentioned project is from the side of the protective layer, using a short wavelength (4〇5nm). Blue or violet laser light color laser beam 'read 1,309,601; Furthermore, the present embodiment patterns D Blu-ray discs, are packaged directly pass through the production. . Therefore, the Blu-ray disc ρ is mounted in the reading device for reading. However, it is not intended to exclude the insertion of the storage cassette to distribute the product, and the respective receiving cassettes are attached to the reading device. Next, a description will be given of a disk substrate forming die 31 of another embodiment shown in FIG. 3, and FIG. 3 is a cross-sectional view showing a main part of a disk substrate forming die of another embodiment. The disk substrate forming die 31 is provided with a first die. The inner peripheral mold base 33 of the movable mold Φ 32, the fixed sleeve 34, and the ejector sleeve 35 are formed to form the annular recess 36 of the stacking strip D3a; therefore, the cavity of the fixed sleeve 34 is formed in a plane 'Below the position of the opposite side of the fixed mold on the outer circumference of the inner circumferential mold base 33 and the inner surface of the ejector sleeves g and 35 (internal position). The gap 37 between the seat 33 and the fixed sleeve 34 ejects the release air 'in addition' to the claw portion % of the inner peripheral mold base 33 of the present embodiment, which does not protrude from the fixed mold 42 side of the first mold, but the claw portion 38 The inner surface faces the lug side of the fixed mold 42 [in a tapered shape which is gradually expanded and controlled; and is fitted into the female mold 39 of the aforementioned claw portion 38. The hole 40' expands in diameter toward the inner surface side (the mirror panel side of the movable side); therefore, the present embodiment protrudes toward the surface of the female mold 39, and is flat by the opposing faces of the fixed mold. The portion 38 supports the female mold; therefore, when the molten resin is injected into the cavity 43, the claw portion 38 does not interfere with the flow of the marshalling resin; and the 'release air that is ejected from the gap 37 is easily spread over the female mold 39 and Between the signal surface D2a of the disc substrate Dia. 17 .1309601 Further, other members such as the movable mold 32 and the fixing member 42 on the optical disk substrate forming mold 31 of FIG. 3 are omitted because (5) is implemented in the figure (4), and the forming procedure and the optical disk of the optical disk substrate D1a are omitted. The process of the blue-ray Da of the optical disk product manufactured by the substrate D1 is the same, so the outline is omitted. Moreover, the claw portion 38 of the inner peripheral die holder 33 shown in FIG. 3 is as shown in FIG. 4, and is characterized by The Blu-ray disc Da produced by the flat disc substrate forming mold 31 is flat at the portion where the claw portion 38 is formed; therefore, a protective layer may be provided in the vicinity of the stacking strip D3a as needed. Next, the optical disk substrate forming mold 51 of the other embodiment shown in FIG. 5 will be explained. FIG. 5 shows the main part of the optical disk substrate forming mold of the other embodiment, which is formed by the optical disk substrate. The surface of the upper solid side mirror panel 53 is provided with a female mold % for forming a signal surface; and the 'fixed mold 52 is provided with an inner peripheral mother mold base 55 on the inner peripheral hole of the mirror panel 53 to be The female mold base 55 claw portion 56 supports the female mold 54. Further, the fixed mold 52 has the inner cutter 57 disposed in the inner peripheral hole of the closing mold holder 55, and the shroud sleeve 58 in the inner cutter 57 is disposed on a retracted position; further, an annular recess of the stacking strip (10) is formed on the forming surface of the inner knife 57 working chamber; in addition, a gap 60 is formed between the inner peripheral female mold base 55 and the fine knife 57, which is opposite to the air of the wrinkle film. The annular recess 59 may be provided only with the female die holder 55 or the inner female die holder 55 and the inner blade 57. Alternatively, the inner female die holder 55 and the inner blade 57 may be formed from the same member. Provided on the member; and, when the annular recess 1309601 59 is disposed on the inner blade 57, the female mold 54 side and the annular concave portion 59 can be provided. For the blade 57 should the gap 55 of the nozzle 6〇 release the air in the periphery of the female die holder, for good release. In addition, the movable mold 61 of the second mold of the embodiment shown in FIG. 5 is disposed on the inspection panel, and is provided with a mirror panel of the living panel; in the closed hole of the mirror panel 62, The fixed mold base 55 is disposed at a position opposite to the 'fixed sleeve 63'; and the inner peripheral punch hole of the fixed sleeve 63 is disposed at a position opposite to the inner cutter 57. The ejector sleeve 64; moreover, the cavity forming surface 62&amp; of the mirror panel 62, the cavity forming surface 63a of the fixing sleeve 63, and the cavity forming surface 64a' of the ejector sleeve 64 are disposed at the same height. A flat horizontal surface D6 may be formed on the optical disc substrate di; and a variable volume cavity 65 may be formed between the solid mold 52 and the movable mold 61.

Although the structure is different, the optical disk substrate forming mold U shown in Fig. 1 described above is the same. Therefore, in addition to the minute points of the optical disk substrate D1 shown in FIG. 2, the optical disk substrate di formed by the optical disk substrate forming mold 51 is slightly the same; in addition, the shape of the female die holder and the shape of the center hole of the female mold can be changed. The optical disk substrate D1 shown in FIG. 4 is also the same as the manufacturing process of the optical disk substrate D1 and the optical disk product D manufactured by the optical disk substrate D1, and thus the description thereof will be omitted. In addition, although the present invention is not enumerated one by one, it is not limited to the above-described embodiment, and is also applicable to changes made by those skilled in the art in accordance with the main content 1309601 of the present invention; the type of resin used is not limited to the aforementioned poly Carbonate, which can also make other resins with excellent optical properties; in addition, in addition to forming the signal surface by the master mold of the optical disk substrate forming mold, it is also possible to use photohardenable resin for copying on the surface of the mother mold in subsequent processes. And form a signal surface. 1309601 BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional view showing the main part of a mold for forming an optical disk substrate according to an embodiment of the present invention. Fig. 2 is an enlarged cross-sectional view showing a Blu-ray disc of an embodiment of the present invention. Fig. 3 is a cross-sectional view showing the main part of a disk substrate forming mold according to another embodiment of the present invention. Figure 4 is an enlarged cross-sectional view showing a Blu-ray disc of another embodiment of the present invention. Fig. 5 is a cross-sectional view showing the main part of a disk substrate forming mold according to another embodiment of the present invention. [Main component symbol description] 11 Disc substrate forming mold 12 Movable mold (first mold) 13 Fixed mold (second mold) 14 Cavity 15 5 25 Mirror panel 15a Surface 15b ' 25b Cooling media flow path 16 Female mold Π Inner circumference Female mold base 18 claw portion 19 fixed sleeve ejector sleeve 21 20 1309601 21 outer knife 22 protruding bolt 23, 29 gap 24 annular recess 25a, 26a, 27a cavity forming surface 26 insertion gate 27 inner knife φ 28 pouring Mouth cover 31 Optical disc substrate forming mold 32 Movable mold (first mold) 33 Inner peripheral female mold base 34 Fixed sleeve 35 Ejector sleeve 36 Annular recess φ 37 Clearance 38 Claw 39 Female mold 40 Center hole 41 Mirror panel 42 Fixed mold (second mold) 43 Cavity 22 1309601 51 Optical disc substrate forming mold 52 Fixed mold (first mold) 53 Mirror panel 54 Female mold 55 Inner peripheral female mold base 56 Claw portion 57 Internal knife φ 58 Washing sleeve 59 Annular recess 60 Clearance 61 Movable mold (second mold) 62 Mirror panel 63 Fixed sleeve 64 Ejector sleeve φ 65 Cavity 62a, 63a, 64a Cavity forming surface D Blu-ray disc (disc product) D1 Disc substrate D2 Signal surface D3 Stacking strip D4 recess 23 1309601 D5 D6 D7 D8 D9

DIO

Da φ Dla D2a D3a D8a Center hole Water level Aluminum evaporation coating Protective layer Printing layer Blu-ray disc (disc product) Disc substrate Signal surface Stacking layer Protective layer 24

Claims (1)

1309601 ♦ X. Patent application scope: 1. A disc substrate forming mold characterized in that: in a cavity formed between a first mold and a second mold, a disc substrate forming mold for forming a disc substrate is first- The mold is provided with a 戦峨-mother mold, and on the side of the mounting female mold portion _, there is an annular concave portion forming a stacking strip; the second mold closing portion has a portion opposite to the aforementioned complementary and the aforementioned concave concave portion On the upper side, a formation surface of a flat horizontal surface is formed. 2. The substrate forming mold according to claim 1, wherein the first mold and the movable mold are provided with an outer cutter capable of forming a center hole of the optical disc substrate in a forward movement manner, and supporting the outer cutter and the female mold The annular recess is provided between the inner peripheral die holder and the claw. , 3, a set of members, characterized in that: it is placed in the inner peripheral hole of the inner mold base of the movable mold described in the claim 2, and at least a portion is formed on the cavity forming surface for Forming an annular recess of the stack of strips. 4. A method of forming a disc substrate, characterized in that: the use of the Laiguang County board-forming device of claim 2 causes a signal surface to be formed on the surface of the Guangxian board, and the signal surface __ from the surface of the surface (4) The layered strip; the other side of the disc substrate 'forms a flat horizontal surface that is opposite to the front and the bridle layer. A method of manufacturing a disc product, characterized in that, in the surface of the substrate formed by the optical disc substrate forming method described in the claim 4, the signal is in addition to the stack σρ The protective layer is provided on the surface; on the other side, the flat surface and the lion layer are formed on the opposite side to form a flat horizontal surface, and the horizontal surface is subjected to surface treatment. 25 1309601 6. A type of optical disc substrate is characterized in that: a signal surface is formed on one side, and a surface of the optical disc is formed on the other side, a signal surface is formed on the one surface, and a signal surface is protruded from the signal surface on the inner peripheral side of the signal surface. The layer strip; on the other side, a flat horizontal surface is formed on a portion disposed opposite to the signal surface and the stack layer. 7. The method for manufacturing a disc product is characterized in that: on the optical disc product having the surface of the optical disc substrate, the surface of the optical disc substrate is formed on the surface of the optical disc substrate. And when the stack layer _ is protruded from the signal surface on the inner side of the signal surface, a protective layer is disposed on the signal surface except for the stack layer portion; and the other side of the optical disc substrate is formed with Wei The face and the stacking strip form a flat horizontal surface on the opposite portion, and the surface treatment is performed on the horizontal surface. 26 1309601 VII. Designation of the representative representative: (1) The representative representative of the case is as shown in Figure 1. (2) The symbol of the symbol of the representative figure is briefly described: 11 CD substrate forming mold 19 fixing sleeve 12 movable mold (first mold) 20 ejector sleeve 13 fixed mold (second mold) 21 outer knife 14 cavity 22 Projection pin 15, 25 mirror panel 23, 29 gap _ 15a surface 24 annular recess 15b, 25b cooling medium flow path 25a, 26a, 27a cavity forming surface 16 female mold 26 inserted into the gate 17 inner peripheral die holder 27 inner blade 18 Claw part 28 sprue cover • Eight, if there is a chemical formula in this case, please reveal the chemical formula that best shows the characteristics of the invention: