WO2004107335A1 - スタンパ用基板及びスタンパ用基板の製造方法 - Google Patents
スタンパ用基板及びスタンパ用基板の製造方法 Download PDFInfo
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- WO2004107335A1 WO2004107335A1 PCT/JP2004/007389 JP2004007389W WO2004107335A1 WO 2004107335 A1 WO2004107335 A1 WO 2004107335A1 JP 2004007389 W JP2004007389 W JP 2004007389W WO 2004107335 A1 WO2004107335 A1 WO 2004107335A1
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- Prior art keywords
- plate
- thickness
- metal
- rolled
- stamper substrate
- Prior art date
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Classifications
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/26—Apparatus or processes specially adapted for the manufacture of record carriers
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/26—Apparatus or processes specially adapted for the manufacture of record carriers
- G11B7/263—Preparing and using a stamper, e.g. pressing or injection molding substrates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B37/00—Lapping machines or devices; Accessories
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B37/00—Lapping machines or devices; Accessories
- B24B37/04—Lapping machines or devices; Accessories designed for working plane surfaces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/263—Moulds with mould wall parts provided with fine grooves or impressions, e.g. for record discs
- B29C45/2632—Stampers; Mountings thereof
Definitions
- the present invention relates to a stamper substrate used for manufacturing a stamper for duplicating an optical disk such as a CD (Compact Disc) or a DVD (Digital Versatile Disc) in a large amount, and a method for manufacturing the stamper substrate. .
- a stamper substrate used for manufacturing a stamper for duplicating an optical disk such as a CD (Compact Disc) or a DVD (Digital Versatile Disc) in a large amount
- Submicron-scale pits for recording signals are formed on optical disks such as CDs and DVDs. Therefore, the surface of the stamper substrate is required to have extremely high flatness. Conventionally, to satisfy such requirements, a substrate for a stamper with high flatness has been manufactured by growing a nickel film on a mirror-polished glass substrate surface by using an electroplating method.
- the thickness of the stamper substrate is generally about 300 ⁇ m. Therefore, in the method of manufacturing a nickel film stamper substrate by growing a nickel film using the electrodeposition method, the nickel film is grown to a thickness of approximately 300 ⁇ m, which is the thickness of the stamper substrate. Power consumption is excessive, which is preferable from the viewpoint of manufacturing cost. In addition, since wastewater is generated by plating, it is not desirable from the viewpoint of increasing the wastewater treatment cost and environmental protection.
- a metal plate for example, a rolled plate made of nickel or nickelol alloy (hereinafter referred to as a Ni rolled plate) manufactured by rolling is cut into a predetermined size.
- a method for manufacturing a stamper substrate by polishing has been proposed.
- Patent Document 1 discloses a method for manufacturing a stamper substrate in which a Ni rolled plate is used as the stamper substrate and the surface is subjected to a chemical mechanical polishing treatment.
- Patent Document 2 discloses a method of manufacturing a stamper substrate in which a metal material punched from a coil-shaped hoop material is subjected to a chemical mechanical polishing treatment.
- Patent Document 1 JP 2002-355749 A
- Patent Document 2 Japanese Patent Application Laid-Open No. 2001-283475 Disclosure of the Invention Problems to be Solved by the Invention
- Such a metal plate is usually manufactured through cold rolling and annealing.
- the metal plate that has gone through such a manufacturing process has the following problems.
- Non-metallic inclusions exist inside the material, and a part thereof is exposed on the surface of the metal plate. Therefore, when a metal plate is subjected to a plating treatment, a defect in which plating does not adhere, that is, a so-called pinhole defect occurs due to low electric conductivity of the nonmetallic inclusion. Due to the occurrence of pinhole defects, the adhesion of the plating surface to the base material having a rough surface is weak, and in extreme cases, the plating may be peeled off during the polishing process.
- polishing is performed only by cutting a Ni rolled plate manufactured by rolling into a predetermined size. It is preferable to shift to processing.
- the thickness error of the rolled Ni plate manufactured by rolling is about ⁇ 10% in the entire length, whereas the thickness error required for the stamper is about ⁇ 2%. Therefore, since the same precision is required for the stamper substrate, there is a problem that it is difficult to use the Ni rolled plate as the stamper substrate over the entire length thereof.
- the thickness dl is 310 / im in the portion A of the Ni rolled plate 1
- the thickness d2 is 300 / im in the portion B.
- the plate thickness required for the stamper substrate is 300 ⁇ and the polishing allowance on both sides is 10 ⁇ m
- the thickness of the Ni rolled plate cut out before polishing is 310 zm is required including the polishing allowance. Therefore, a stamper substrate that satisfies the requirements (that is, a thickness of 300 xm and a thickness tolerance of ⁇ 2%) can be manufactured from part A, but a stamper substrate that satisfies the requirements can be manufactured from part B. Cannot be produced.
- the present invention has been made in view of such circumstances, and by preventing the occurrence of pinhole defects during metal plating by nonmetallic inclusions, the surface flatness after polishing is improved.
- An object of the present invention is to provide a stamper substrate that can be held and a method of manufacturing the stamper substrate.
- An object of the present invention is to provide a stamper substrate and a method of manufacturing the stamper substrate.
- a further object of the present invention is to provide a method of manufacturing a stamper substrate that can use the entire rolled metal plate as a material for the stamper substrate and can maintain a high production yield.
- the stamper substrate according to the first invention is characterized in that a coating is applied to the surface or back surface of the plate material, or both the front and back surfaces.
- the thickness of the coating film can be smaller than when a metal-coated thick film is formed by using an electroplating method. Therefore, power consumption and time required for manufacturing can be reduced, and manufacturing cost can be reduced.
- the stamper substrate according to the second invention is characterized in that, in the first invention, the plate material is a metal plate.
- the plate material is a metal plate, and the thickness of the metal-plated film can be smaller than the case where a metal-plated thick film is formed by using an electroplating method. Therefore, it is possible to reduce power consumption, time required for manufacturing, the amount of consumables used for plating, and the like, and it is possible to reduce manufacturing costs.
- the stamper substrate according to the third invention is characterized in that, in the second invention, the cleanliness of the nonmetallic inclusions of the plate is 0.05% or less.
- the cleanliness indicating the weight ratio of nonmetallic inclusions present in the metal plate is set to 0.05% or less. As a result, the possibility of exposing nonmetallic inclusions to the surface can be reduced, and the occurrence of pinhole defects when metal plating is performed can be prevented.
- the cut plate material when the plate material is cut into a predetermined size, the cut plate material has a warp of 0.1 mm or more. Is a special feature.
- the cut-out plate material has a warp of 0.1 mm or more. Therefore, it is possible to easily insert a jig or the like between the plate material and the surface plate and remove the plate material.
- the plate material is made of pure nickel, a nickel alloy, pure titanium, a titanium alloy, stainless steel, iron, and an iron alloy. , Pure copper, copper alloy, pure aluminum, aluminum alloy, pure magnesium, and magnesium alloy as main components.
- the use of such a metal material and a metal plating film can provide the above-described effects.
- any one of the first invention to the fifth invention at least one surface of the plate material coated surface is subjected to a polishing treatment. It is characterized by.
- the thickness of the coating film may be smaller than when a metal-coated thick film is formed by using an electroplating method. Therefore, it is possible to reduce power consumption, time required for manufacturing, consumption of plating-related consumables, etc., thereby reducing manufacturing costs.
- a method for manufacturing a stamper substrate according to a seventh aspect of the present invention provides a method for manufacturing a stamper substrate, comprising: Or metal plating on both front and back and polishing
- the metal is rolled to produce a rolled metal plate, and the produced rolled metal plate is cut into a predetermined size and cut into a predetermined size.
- the method is characterized in that metal is applied to the front or back surface, or both front and back surfaces of the rolled metal plate, and is polished.
- the thickness of the rolled metal plate manufactured by rolling is finely adjusted by metal plating. Therefore, in order to adjust the sheet thickness before performing the polishing process, it is possible to prevent the occurrence of a portion that cannot be used due to the insufficient thickness by performing the polishing process on the metal rolled plate, thereby increasing the production yield. The ability to maintain S becomes possible. Further, the thickness of the metallized film can be smaller than that of a metal-coated thick film formed by using an electroplating method. Therefore, it is possible to reduce power consumption, time required for forming a film, usage of consumables related to plating, and the like, and it is also possible to reduce manufacturing costs.
- the plate thickness set as a target when the metal rolled plate is rolled is determined when the polishing process is completed. It is characterized in that it is thinner than the thickness obtained by adding the polishing allowance to the required thickness (typically the thickness required for a stamper substrate).
- a stamper substrate that satisfies the requirements can be manufactured over the entire length of the rolled metal plate, and the production yield can be kept high.
- the thickness error of a rolled metal plate manufactured by rolling may be about ⁇ 10% for one entire coil. In this case, if rolling is performed with the target thickness of the plate required for the stamper plus the polishing allowance, there may be portions that are too thin, and the thickness may be too small.
- the required thickness of the stamper substrate is 300 ⁇ m
- a rolled metal plate of 310 ⁇ may be manufactured.
- the thickness d2 is small, and the target sheet thickness cannot be secured. Therefore, if the plate thickness is too thin, plating can be applied to add a plating layer to compensate for the shortage of the plate thickness. For example, if the thickness of a substrate obtained by cutting out a partial roll of a rolled metal plate is 290 ⁇ m, a shortage of 10 ⁇ m can be applied to the front and back surfaces of the substrate to compensate for the insufficient thickness.
- the degree of thickness reduction may be determined in consideration of the magnitude and the probability of occurrence of a thickness error occurring during rolling. In other words, when a thickness error occurs in the thicker direction (positive direction), the thickness of the rolled metal sheet is equal to the above-described thickness of the stamper substrate plus the polishing allowance. Then, the target thickness at the time of rolling may be set.
- the method according to any one of the seventh invention to the ninth invention comprises:
- the thickness is a thickness obtained by subtracting the thickness of the rolled metal plate from the thickness obtained by adding the thickness of the polishing allowance in the polishing process to the thickness required at the completion of the polishing process.
- the thickness of the rolled metal plate can be adjusted over the entire length. Therefore, a stamper substrate that satisfies the requirements can be manufactured regardless of where the metal rolled plate is cut, and the production yield can be kept high.
- the metal plating applied to the front surface or the back surface of the rolled metal plate, or both the front and back surfaces is the same as the metal.
- the same type of metal material as the metal rolled plate is used.
- the thermophysical properties affecting the stamper substrate become the same when the optical disk is formed by the manufactured stamper substrate. Therefore, it is possible to maintain higher reliability as a stamper substrate that is less likely to cause peeling of the plating film.
- the metal in any one of the seventh to eleventh inventions, may be at least one of nickel, titanium, iron, copper, and aluminum. One as a main component.
- the thickness of the coating film is greater than that of forming a metal-coated thick film using an electroplating method. It can be thin. Therefore, power consumption and time required for manufacturing can be reduced, and manufacturing costs can be reduced.
- the stamper substrate according to the third invention the possibility that non-metallic inclusions become apparent on the surface can be reduced, and the occurrence of pinhole defects due to metal plating is prevented beforehand. It is possible to do.
- the stamper substrate according to the fourth invention it is possible to easily insert a jig or the like between the metal plate and the surface plate and remove the metal plate.
- the above-described effects can be expected by using the metal material and the metal plating film.
- the thickness of the rolled metal plate manufactured by rolling is adjusted by metal plating before the polishing treatment.
- a metal rolled plate By subjecting a metal rolled plate to a polishing treatment, it is possible to prevent a situation in which a portion that cannot be used due to a lack of the plate thickness can be prevented beforehand, and a high production yield can be maintained.
- the thickness of the plated film can be made smaller than that of forming a thick metal-coated film on a stamper substrate by using an electroplating method, power consumption can be reduced and manufacturing costs can be reduced. This is all right.
- the entire length of the rolled metal plate is reduced.
- a stamper substrate that satisfies the requirements can be manufactured, and the production yield can be maintained at a high level.
- the thickness can be adjusted over the entire length of the rolled metal sheet.
- a stamper substrate can be manufactured, and a high production yield can be maintained.
- the stamper substrate can be formed at the time of forming an optical disc using the manufactured stamper substrate. Since the thermophysical properties that affect the substrate for use are the same, it is possible to maintain higher reliability as a stamper substrate that is less likely to cause peeling of the plating film, etc.
- the effects described above can be expected by using such a metal material and a metal plating film.
- the material of the plate material is not particularly limited, and any material may be used as long as it can secure adhesion to such an extent that it does not peel off in the polishing process after the coating process.
- any method can be used as long as it has good adhesion to the plate material, such as metal plating, vapor deposition, and bonding.
- a rolled plate manufactured by a rolling process described below which is desirably a metal plate, is used as the plate material.
- a Ni rolled plate is used as a material of the rolled plate.
- other materials such as titanium, iron, copper, and aluminum can be used, and for example, an alloy such as stainless steel may be used.
- the rolled Ni plate 1 is manufactured by rolling under the following conditions, for example. After dissolving the nickel metal, a slab having a thickness of 150 mm is formed by continuous forming, and the slab is hot-rolled to a thickness of 4 mm. Furthermore, after annealing at 720 ° C, the surface is oxidized to remove oxide scales, then cold-rolled to a thickness of 0.3 mm, and annealed at 720 ° C. Further, when warpage of the plate is a problem, a tensile elongation of 2% or less may be provided, or light rolling of 1% or less may be performed.
- the Ni rolled plate 1 wound as a coil having a length of several meters, a force of several tens of meters, and a width of 2m is about ⁇ 10% at most in the length and width directions. It has a thickness distribution of
- the Ni rolled plate 1 manufactured as described above is subjected to a process such as cutting out by a well-known machining process, for example, to fit a stamper for copying a large amount of optical disks such as CDs or DVDs. It is processed into a disk shape having a diameter D of approximately 160 mm.
- a rolled Ni plate processed into a disc shape is hooked on a hook made of wire, and a chemical conversion treatment, which is a pretreatment for plating, is performed.
- the chemical conversion treatment for example, after a degreasing treatment using acetone, the plate is immersed in an aqueous solution of sodium hydroxide having a volume concentration of 5% for several seconds, and continuously immersed in a hydrochloric acid solution having a volume concentration of 5% for several seconds.
- the rolled Ni-plated sheet is washed with pure water and then subjected to a plating treatment described in detail below.
- the plating bath used for the plating treatment is not particularly limited, and an ordinary plating bath may be used.
- an ordinary plating bath may be used.
- when performing plating with Ni use a sulfamic acid bath or a Watts bath, and when performing plating with a Ni alloy, use a NiP alloy plating bath.
- the plating bath uses a chemically stable plating bath made of SUS316 steel or the like, and a steam coil or an electric heater installed in the bath. And heat to a specified temperature (usually 70 ° C to 90 ° C). In order to keep the plating bath composition and the temperature constant, it is preferable to constantly stir the inside of the tank using a pump circulation or a stirrer.
- the disc-shaped Ni rolled plate subjected to the above-mentioned chemical conversion treatment is hung on a hook while being hooked on a hook, immersed in a plating bath, and the time when the plating layer 2 reaches a predetermined thickness is observed. Measure and raise.
- Electroless film formation For NiP alloy plating plating film thickness Since it is proportional to the immersion time in the plating bath, for example, if the deposition rate is 12 ⁇ ⁇ / 1 hour when plating at 80 ° C, immersion in the plating bath for 5 minutes will allow A plating layer 2 of 1 ⁇ m can be formed.
- the thickness of the plating layer 2 is determined in consideration of the polishing allowance. Depending on the required thickness of the plating layer 2, the time for immersing the disc-shaped Ni rolled plate 1 in the plating bath is determined.
- the plating layer 2 is preferably plated with a metal material or an alloy having a linear expansion coefficient equivalent to that of a metal rolled plate.
- a metal plating of the same component as that of the metal material of the rolled metal plate or an alloy plating of the same main component is applied.
- a nickel plating layer or a nickel alloy plating layer of nickel phosphorus, nickel boron, nickel cobalt, or the like is desirable.
- the components of the plating layer are not particularly limited, and the coating may be performed by a method such as vapor deposition or the like. It may be formed.
- the metal material there is usually a nonmetallic inclusion that is poor in electrical conductivity and has a large rubbing force and a large decrease in wettability with the liquid. Therefore, when plating is performed on the surface of a metal plate made of such a metal material, a portion called a pinhole where a plating layer is not formed occurs. When pinholes are generated, the surface roughness is not sufficiently reduced even if a surface polishing treatment described later is performed on the plated surface. Therefore, it becomes difficult to form dots during signal recording and cannot be used as a stamper, so it is necessary to prevent the occurrence of pinholes.
- Samples for examining surface roughness for each cleanliness were collected from slabs manufactured by continuous production after melting pure nickel in an electric furnace. Change the cleanliness ratio, which is the weight ratio of non-metallic inclusions. Near the top surface, near the center, and near the final solidification position of a slab manufactured by Begu continuous manufacturing Samples for examination were collected from three places. Near the final solidification position of the slab, the concentration of nonmetallic inclusions increases and the cleanliness increases (the higher the nonmetallic inclusions, the higher the proportion of nonmetallic inclusions). Near the center of the slab, steady solidification is occurring, so the concentration of nonmetallic inclusions is lower and the cleanliness is lower than near the final solidification position. Low ratio).
- a slab used for secondary melting to further reduce the concentration of nonmetallic inclusions was taken from a study sample taken near the center in the longitudinal direction of a slab manufactured by continuous manufacturing. Take. Specifically, a test sample with a diameter of 100 mm and a length of 200 mm was collected and subjected to VAR melting (arc melting) in a vacuum.
- VAR melting arc melting
- the hot-rolled sheet taken as a sample for examination was annealed at 750 ° C, and the scale formed on the surface was removed by molten salt and pickling. After that, it was subjected to 750 degree intermediate annealing with a thickness of lmm, and then cold rolled to a thickness of 0.95mm.
- the disc-shaped Ni rolled plate 1 in which the thickness of the plating layer 2 was adjusted by adjusting the immersion time in the plating bath. Then, a normal surface polishing process and a back surface polishing process, or a double-side polishing process in which the front and back surfaces are simultaneously polished. Here, rough polishing is sufficient for the back surface polishing. Therefore, use a rubbing tape to which abrasive grains such as white alumina are fixed, and grind to a surface roughness Ra about 0.05-0. Lz m.
- polishing In the surface polishing treatment, it is necessary to form submicron-scale pits for recording signals on an optical disc manufactured using the stamper substrate according to the present embodiment. Polishing must be performed to such an extent that polishing scratches and the like do not remain. Therefore, finish polishing is performed by using, for example, a chemical mechanical polishing method, and surface polishing is performed so that polishing scratches and the like do not remain.
- the final thickness after polishing is about 300 ⁇ ⁇ 5 ⁇ .
- the thicknesses of three types of Ni-rolled plate, Ni-rolled plate that has been polished without plating, and Ni-rolled plate that has been polished after plating have been compared.
- the surface roughness of the polished Ni plated plate is evaluated after plating.
- the mass of a disc-shaped Ni rolled sheet is divided by the specific gravity of nickel. Calculate the volume by, and divide the volume by the circular area to obtain and evaluate the average thickness.
- the specific gravity of nickel the reference value of 8,904 g / cm 3 is used.
- FIG. 4 is a cross-sectional structure diagram of a nickel plating phosphor (NiP) alloy-coated film formed on a rolled Ni plate. From FIG. 4, it can be seen that the plating film is formed with a uniform thickness on the Ni rolled sheet surface. The plating film in FIG. 4 was immersed in the plating bath for 2 hours, and the thickness dm of the plating film reached approximately 24 ⁇ m.
- NiP nickel plating phosphor
- Fig. 5 is a diagram showing the thickness distribution of a rolled Ni plate before polishing and a case where the rolled Ni plate is directly polished without plating.
- the vertical axis indicates the plate thickness m), and the horizontal axis indicates the diametric displacement (mm) with the center of the circle being zero.
- FIG. 6 shows the Ni rolled plate before plating, the Ni rolled plate after plating the Ni rolled plate, and the Ni rolled plate that was polished after plating the Ni rolled plate.
- Sheet thickness distribution FIG. As in FIG. 5, the vertical axis indicates the plate thickness m), and the horizontal axis indicates the diametric displacement (mm) with the center of the circle being zero.
- Such a Ni rolled plate is subjected to a 7 ⁇ m-thick plating process in anticipation of a polishing allowance of 10 ⁇ m. Since the plating layer is formed on both the front and back surfaces of the Ni rolled plate, the Ni rolled plate may be subjected to a plating treatment with a thickness of 3.5 zm. In the case of the NiP alloy plating described above, the Ni rolled plate subjected to the chemical conversion treatment is immersed in the plating bath for 17 to 18 minutes. The thickness distribution after immersing the Ni rolled plate in the plating bath is shown by the triangle in Fig. 6. As is clear from FIG. 6, the plating layer is formed while maintaining the uniformity of the plate thickness.
- the thickness distribution in the case where the Ni rolled plate is subjected to the polishing treatment after being subjected to the plating treatment is indicated by the X mark in FIG. Similar to the + mark in Fig. 5, although a slight vertical movement is observed due to the polishing process, the plate thickness remains at a maximum of 5 / im. In addition, because of the chemical conversion treatment, the adhesion between the plated layer and the Ni rolled sheet is high, and no local peeling of the plating layer due to the polishing treatment is observed.
- the polishing allowance for polishing the front and back surfaces is about 10 ⁇ on both sides.
- the stamper substrate is finally finished. It falls within the required range of 300/1 111 ⁇ 5/1 111 (the shaded area in Fig. 6) and can be used as a stamper substrate. Therefore, by increasing the thickness of the entire cut substrate by performing the plating process, it is possible to use a substrate cut from any part of the rolled Ni plate as a stamper substrate.
- FIG. 7 is an atomic force microscope image of the surface of a rolled Ni plate when a surface finish is performed on the plated Ni rolled plate using a chemical mechanical polishing process. As is evident from FIG. 7, the surface of the Ni rolled sheet is extremely smooth, and polishing scratches, which may hinder signal recording, are generated.
- the method for manufacturing a stamper substrate according to the present embodiment was used.
- the surface roughness Ra of the rolled Ni plate was approximately 0.8 nm, which was sufficient for a stamper substrate. Accuracy.
- the thickness of the rolled metal plate is adjusted by applying a plating to both the front and back surfaces of the rolled metal plate cut to the size of the stamper and providing a plating layer. Similar effects can be expected even if the thickness of the rolled metal plate is adjusted by plating one of the back surfaces and providing a plating layer on only one of the back surfaces.
- the metal plate used as the stamper substrate is a circular plate, and needs to have a shape that is upwardly convex with respect to the mold platen. That is, air is degassed from the portion of the center of the disk that is upwardly convex with respect to the mold surface plate, and the disk-shaped metal plate is fixed to the mold surface plate.
- a shape that is upwardly convex with respect to the mold surface plate is obtained by giving an appropriate warp to the metal plate.
- the symbol “ ⁇ ” indicates that the mold can be fixed to the mold platen by the vacuum suction method, and that desorption can be performed after the adsorption. This indicates that it cannot be fixed to the panel and that desorption after adsorption is not possible.
- the upper limit value of the warpage depends on the performance such as the flatness and the suction force of the mold surface plate. Warpage is imparted to the metal plate by appropriately setting conditions such as temper rolling and tension leveler, and plating is applied to the surface of the warped metal plate. By polishing, the warpage of the metal plate remains as it is, and the releasability is improved.
- temper rolling, tension leveler, etc. are not particularly limited, and the reduction ratio of temper rolling, lubrication conditions, roll diameter, peripheral speed of upper and lower rolls, and further, roll diameter of tension leveler , Tension, etc. may be appropriately set so as to have the warpage specified in the present embodiment.
- FIG. 1 is an explanatory diagram of a sheet thickness distribution in a conventional Ni rolled sheet.
- FIG. 2 is an explanatory diagram of a method of manufacturing a stamper substrate according to an embodiment of the present invention.
- FIG. 3 is an explanatory diagram of a method for confirming a thickness distribution of a rolled Ni plate.
- FIG. 4 is a cross-sectional structure diagram of a NiP alloy plating film formed on a rolled Ni plate.
- FIG. 5 is a diagram showing a thickness distribution of a conventional Ni rolled plate.
- FIG. 6 is a view showing a thickness distribution of a rolled Ni plate according to the embodiment of the present invention.
- FIG. 7 is a view showing an atomic force microscope image of a Ni rolled sheet according to the embodiment of the present invention. Explanation of reference numerals
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Manufacturing Optical Record Carriers (AREA)
- Electroplating Methods And Accessories (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Compounds Of Unknown Constitution (AREA)
- Manufacturing Of Magnetic Record Carriers (AREA)
Abstract
Description
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Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04745425A EP1628298B1 (en) | 2003-05-29 | 2004-05-28 | Stamper substrate and process for producing the same |
DE602004022158T DE602004022158D1 (de) | 2003-05-29 | 2004-05-28 | Stanzersubstrat und prozess zu seiner herstellung |
TW093115476A TWI243745B (en) | 2003-05-29 | 2004-05-28 | Stamper substrate and process for producing the same |
AT04745425T ATE437435T1 (de) | 2003-05-29 | 2004-05-28 | Stanzersubstrat und prozess zu seiner herstellung |
JP2005506510A JP4458042B2 (ja) | 2003-05-29 | 2004-05-28 | スタンパ用基板 |
US11/288,166 US7641169B2 (en) | 2003-05-29 | 2005-11-29 | Substrate for a stamper |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003152702 | 2003-05-29 | ||
JP2003-152702 | 2003-05-29 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/288,166 Continuation US7641169B2 (en) | 2003-05-29 | 2005-11-29 | Substrate for a stamper |
Publications (1)
Publication Number | Publication Date |
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WO2004107335A1 true WO2004107335A1 (ja) | 2004-12-09 |
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Application Number | Title | Priority Date | Filing Date |
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PCT/JP2004/007389 WO2004107335A1 (ja) | 2003-05-29 | 2004-05-28 | スタンパ用基板及びスタンパ用基板の製造方法 |
Country Status (10)
Country | Link |
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US (1) | US7641169B2 (ja) |
EP (1) | EP1628298B1 (ja) |
JP (1) | JP4458042B2 (ja) |
KR (1) | KR100795249B1 (ja) |
CN (2) | CN1799090A (ja) |
AT (1) | ATE437435T1 (ja) |
DE (1) | DE602004022158D1 (ja) |
ES (1) | ES2326806T3 (ja) |
TW (1) | TWI243745B (ja) |
WO (1) | WO2004107335A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2006249536A (ja) * | 2005-03-11 | 2006-09-21 | Sumitomo Metal Ind Ltd | 鏡面研磨用の金属素材 |
JP2008044328A (ja) * | 2006-08-21 | 2008-02-28 | Yamaha Corp | 微細成形モールドの製造方法 |
WO2018225550A1 (ja) * | 2017-06-06 | 2018-12-13 | コニカミノルタ株式会社 | 成形装置 |
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KR101476746B1 (ko) * | 2011-09-04 | 2014-12-29 | 포항공과대학교 산학협력단 | 내부식성 모기판을 이용한 플렉서블 금속 기판과 전자소자의 제조방법, 플렉서블 전자소자 및 플렉서블 금속 기판 |
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- 2004-05-28 CN CNA200480014928XA patent/CN1799090A/zh active Pending
- 2004-05-28 WO PCT/JP2004/007389 patent/WO2004107335A1/ja active Application Filing
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- 2004-05-28 CN CN2009102532825A patent/CN101763869B/zh not_active Expired - Lifetime
- 2004-05-28 JP JP2005506510A patent/JP4458042B2/ja not_active Expired - Lifetime
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- 2004-05-28 KR KR1020057022691A patent/KR100795249B1/ko active IP Right Grant
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JP2006249536A (ja) * | 2005-03-11 | 2006-09-21 | Sumitomo Metal Ind Ltd | 鏡面研磨用の金属素材 |
JP2008044328A (ja) * | 2006-08-21 | 2008-02-28 | Yamaha Corp | 微細成形モールドの製造方法 |
WO2018225550A1 (ja) * | 2017-06-06 | 2018-12-13 | コニカミノルタ株式会社 | 成形装置 |
JPWO2018225550A1 (ja) * | 2017-06-06 | 2020-04-09 | コニカミノルタ株式会社 | 成形装置 |
JP7031666B2 (ja) | 2017-06-06 | 2022-03-08 | コニカミノルタ株式会社 | 成形装置及び成形品の製造方法 |
Also Published As
Publication number | Publication date |
---|---|
DE602004022158D1 (de) | 2009-09-03 |
EP1628298B1 (en) | 2009-07-22 |
EP1628298A4 (en) | 2008-08-27 |
CN1799090A (zh) | 2006-07-05 |
CN101763869A (zh) | 2010-06-30 |
TW200508007A (en) | 2005-03-01 |
ES2326806T3 (es) | 2009-10-20 |
JPWO2004107335A1 (ja) | 2006-07-20 |
KR100795249B1 (ko) | 2008-01-15 |
JP4458042B2 (ja) | 2010-04-28 |
CN101763869B (zh) | 2012-06-06 |
ATE437435T1 (de) | 2009-08-15 |
TWI243745B (en) | 2005-11-21 |
US20060131474A1 (en) | 2006-06-22 |
EP1628298A1 (en) | 2006-02-22 |
US7641169B2 (en) | 2010-01-05 |
KR20060023975A (ko) | 2006-03-15 |
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