KR20010047528A - Method for making an optical disk - Google Patents
Method for making an optical disk Download PDFInfo
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- KR20010047528A KR20010047528A KR1019990051799A KR19990051799A KR20010047528A KR 20010047528 A KR20010047528 A KR 20010047528A KR 1019990051799 A KR1019990051799 A KR 1019990051799A KR 19990051799 A KR19990051799 A KR 19990051799A KR 20010047528 A KR20010047528 A KR 20010047528A
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- optical disk
- circular
- resin
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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
- G11B7/266—Sputtering or spin-coating layers
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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
- G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
- G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
- G11B7/253—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates
- G11B7/2533—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising resins
- G11B7/2534—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising resins polycarbonates [PC]
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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
- G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
- G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
- G11B7/254—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of protective topcoat layers
- G11B7/2542—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of protective topcoat layers consisting essentially of organic resins
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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
- G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
- G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
- G11B7/258—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of reflective layers
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
- G11B2220/2537—Optical discs
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Manufacturing Optical Record Carriers (AREA)
Abstract
Description
본 발명은 비원형 광 디스크 제조방법에 관한 것으로서, 특히 기존의 광 디스크 드라이브에 어떠한 개선이나 별도의 아답터 장비 없이도 광 디스크 드라이브에의 장착시 높은 센터 확보율을 보이고, 또한 보관 및 취급이 용이한 비원형 광 디스크의 제조방법에 관한 것이다.The present invention relates to a non-circular optical disk manufacturing method, and in particular, the existing optical disk drive shows a high center securement rate when mounted on the optical disk drive without any improvement or additional adapter equipment, and also easy to store and handle non-circular It relates to a method for manufacturing an optical disk.
광 디스크에는 현재 상용화되어 있거나 사용화 예정인 컴팩트 디스크, 미니 디스크, CD-R, DVD-ROM, DVD-RW등 다양한 종류가 있다.There are various types of optical discs, such as compact discs, mini discs, CD-Rs, DVD-ROMs, and DVD-RWs, which are commercially available or planned to be used.
일반적으로 콤팩트 디스크(Compact Disk) 등과 같은 광 디스크는 직경 120mm와 80mm의 원판형 디스크로 이루어지고, 주로 음악이나 영상 등을 수록하며, 소형 경량으로 취급이 용이하고 정보를 디지털로 저장해 원음 또는 원본 영상의 화질에 가깝게 재생할 수 있는 장점 때문에 오늘날 그 사용이 비약적으로 증대되고 있다.In general, an optical disk such as a compact disk is composed of a disk-shaped disk having a diameter of 120 mm and a diameter of 80 mm, mainly containing music or video, and is compact and lightweight, easy to handle, and digitally stores information to store original or original images. Today, its use is rapidly increasing because of its ability to reproduce near picture quality.
한편, 날로 다양해지는 소비자의 기호를 충족시키기 위해 최근에는 기존의 획일적인 원형 콤팩트 디스크와는 다른, 즉 그 외형이 비원형인 형태, 예를 들면, 하트형, 자동차형, 신용카드형 등과 같은 비원형의 컴팩트 디스크가 선을 보이고 있다.On the other hand, in order to meet the ever-increasing preference of consumers, it is different from the existing uniform circular compact discs, that is, its shape is non-circular, for example, such as heart-shaped, automobile-type, credit card-type, etc. A circular compact disc shows the line.
이러한 콤팩트 디스크가 디스크 드라이브의 트레이에 의해 드라이브 내부로 인입된 후, 스핀들 모터의 마운터가 상승해 광 디스크의 중앙공과 일치됨으로써 디스크의 센터가 확보되고 회전을 함으로써 광 픽업(Pick-Up)으로부터 조사되는 레이저를 이용해 기록된 데이터를 재생하게 되는 것이다.After the compact disc is inserted into the drive by the tray of the disc drive, the mount of the spindle motor is raised to coincide with the center hole of the optical disc, thereby securing the center of the disc and rotating it to be irradiated from the optical pickup. The laser records the recorded data.
그러므로, 광 디스크의 센터를 확보하지 않고서는 광 디스크로부터 데이터를 재생하는 것은 불가능하므로, 마운터의 상승 위치와 중앙공의 위치를 일치시키는 것은 광 디스크 제품에 있어서 가장 중요한 것이라 할 수 있다.Therefore, since data cannot be reproduced from the optical disk without securing the center of the optical disk, matching of the position of the mounter with the position of the center hole is the most important thing in the optical disk product.
따라서 디스크 트레이(1)에는 도 1에 도시된 바와같이, 120mm 디스크용 안착부(2)와 80mm 디스크용 안착부(3)를 별도로 설치해 120mm 광 디스크를 사용할 경우에는 120mm 광 디스크의 외주와 120mm 광 디스크용 안착부(2)의 내측면과 접함으로써 120mm 광 디스크의 센터를 확보할 수 있고, 80mm 광 디스크의 경우도 80mm 광 디스크용 안착부(3)를 이용해 같은 원리로 센터를 확보할 수 있게 된다.Therefore, as shown in FIG. 1, when the 120 mm optical disc is used by separately installing the 120 mm disc seating part 2 and the 80 mm disc seating part 3, as shown in FIG. The center of the 120mm optical disk can be secured by contacting the inner surface of the disk mounting portion 2, and in the case of the 80mm optical disk, the center can be secured by the same principle using the mounting portion 3 for the 80mm optical disk. do.
그러므로 새로이 등장한 비원형 광 디스크는 센터 확보를 위해 80mm 광 디스크용 안착부(3)의 내측면과 반드시 3점 이상이 접합하는 외형으로 한정된 제품을 생산할 수 밖에 없었다.Therefore, the newly emerged non-circular optical disk had no choice but to produce a product limited to an outer surface in which at least three points were bonded to the inner surface of the mounting portion 3 for the 80 mm optical disk to secure the center.
따라서 이러한 외형의 제약을 해결하기 위해 PCT 국제 출원 공개 번호 WO99/00765 호에서는 도 2a에 도시된 바와같이 트레이(1)의 80mm 디스크용 안착부(3)에 접하는 4점의 돌기(5)를 광 디스크(4)의 하면에 형성해 상기와 같은 외형상의 제약을 해결하는 방법을 제시하고 있다. 또한 국내 특허출원 99-16604호에서는 도 2b에 도시된 바와같이 상기 4점의 돌기에 해당하는 80mm 안착부 내측면에 접하는 원호상의 돌기부(7)를 광 디스크(6)의 하면에 설치하는 것을 제시하고 있다.Therefore, in order to solve this limitation, PCT International Application Publication No. WO99 / 00765 discloses a four-point protrusion 5 contacting the 80 mm disc seating portion 3 of the tray 1 as shown in FIG. 2A. Formed on the lower surface of the disk 4, a method for solving the above-mentioned limitations in appearance is proposed. In addition, Korean Patent Application No. 99-16604 proposes to install the arcuate projection 7 on the lower surface of the optical disk 6 in contact with the inner surface of the 80 mm seating portion corresponding to the four-point projection as shown in FIG. 2B. Doing.
그러나 이와 같은 상기 특허들은, 80mm 안착부(3) 내측면에 접하는 돌기(5) 또는 돌기부(7)를 설치함으로써 센터를 확보하기 위한 수단을 마련하였지만, 광 디스크(4)가 도 3에 도시된 바와같이 트레이(1)에 장착된 상태에서, 트레이(1)가 인입할 때 발생되는 진동으로 인해 80mm 안착부(3)로부터 이탈되기 쉬운 문제점을 갖고 있다.However, the above patents provide a means for securing a center by providing a projection 5 or a projection 7 in contact with the inner surface of the 80 mm seating portion 3, but the optical disk 4 is shown in FIG. As described above, in the state in which the tray 1 is mounted, there is a problem of being easily separated from the 80 mm seating portion 3 due to the vibration generated when the tray 1 is retracted.
또한, 상기 특허들은, 트레이에서 센터 확보를 위한 돌기(5) 또는 돌기부(7)를 설치함으로써 광 디스크의 총 두께가 돌출되는 부위의 두께만큼 두꺼워지는 결과를 가져오게 되었다.Further, the above patents have resulted in that the total thickness of the optical disk is thickened by the thickness of the protruding portion by providing the projection 5 or the projection 7 for securing the center in the tray.
본 발명은 상술한 바와 같은 종래의 문제점을 해결하기 위한 것으로서, 기존의 광 디스크 드라이브 트레이에 어떠한 개조없이 80mm 안착부에 정확하게 장착됨으로써 쉽게 센터를 확보하면서도 기존 광 디스크의 두께 규격을 유지할 수 있어 보관을 보다 용이하게 한 비원형 광 디스크의 제조방법을 제공하는데 그 목적이 있다.The present invention is to solve the conventional problems as described above, by accurately mounting the 80mm seating portion without any modification to the existing optical disk drive tray can be easily secured the center while maintaining the thickness standard of the existing optical disk storage It is an object of the present invention to provide a method of manufacturing a non-circular optical disk which is easier.
상기의 목적을 달성하기 위하여 본 발명은, 120mm 직경의 원형 폴리카보네이트 제1기판의 피트 위에 반사층을 스퍼터링 기법으로 형성하는 단계와, 80mm 직경의 원형 폴리카보네이트 제2기판의 피트 위에 반투명층을 스퍼터링 기법으로 형성하는 단계와, 80mm 직경의 제 2 기판 상면의 반투명층 위에 접착용 UV수지를 스핀 코팅한 후, 이를 120mm 직경의 제 1 기판 하면에 접착 고정시키는 단계와, 120mm 직경의 제 1 기판 상면의 반사층 위에 보호층을 형성하는 단계와, 상기 접착용 UV수지에 의해 일체로 접착된 120mm 직경의 제 1 기판과 80mm 직경의 제 2 기판을 비원형으로 절단하는 단계를 포함하는 비원형 광 디스크 제조방법을 제공하는데 그 특징이 있다.In order to achieve the above object, the present invention provides a method for forming a reflective layer on a pit of a 120 mm diameter circular polycarbonate first substrate by sputtering, and a sputtering technique on a pit of an 80 mm diameter circular polycarbonate second substrate. And spin-coating an adhesive UV resin on the translucent layer of the upper surface of the second substrate having a diameter of 80 mm, and then fixing and fixing the adhesive UV resin to the lower surface of the first substrate having a diameter of 120 mm, and the upper surface of the first substrate having a diameter of 120 mm. Forming a protective layer on the reflective layer, and a non-circular optical disk manufacturing method comprising the step of non-circularly cutting the first substrate of 120mm diameter and the second substrate of 80mm diameter bonded integrally by the adhesive UV resin Its features are provided.
도 1은 디스크 드라이브의 트레이를 도시한 평면도.1 is a plan view of a tray of a disk drive;
도 2a 및 도 2b는 종래 비원형 광 디스크들의 저면도.2A and 2B are bottom views of conventional non-circular optical disks.
도 3은 종래 비원형 광 디스크가 트레이에 안착된 상태를 도시한 사시도.3 is a perspective view showing a state where a conventional non-circular optical disk is seated in a tray;
도 4a-4e는 본 발명에 따른 비원형 광 디스크의 제조 공정을 도시한 공정도.4A-4E are process drawings showing the manufacturing process of the non-circular optical disk according to the present invention.
도 5는 본 발명에 따른 제조방법에 의해 제조된 비원형 광 디스크의 저면을 도시한 사시도.5 is a perspective view showing the bottom of the non-circular optical disk manufactured by the manufacturing method according to the present invention.
도 6은 본 발명에 따른 제조방법에 의해 제조된 비원형 광 디스크가 트레이에 안착되는 상태를 나타낸 분리 단면도.6 is an exploded cross-sectional view showing a state in which a non-circular optical disk manufactured by a manufacturing method according to the present invention is seated on a tray;
도 7a는 종래 비원형 광 디스크의 적재시 단면도.7A is a cross sectional view of a conventional non-circular optical disk upon loading;
도 7b는 본 발명에 따른 제조방법에 의해 제조된 비원형 광 디스크의 적재시 단면도.7B is a cross sectional view of the non-circular optical disk manufactured by the manufacturing method according to the present invention;
＜도면의 주요부분에 대한 부호의 설명＞<Description of the code | symbol about the principal part of drawing>
11 : 폴리카보네이트 제1기판 12 : 반사층11: polycarbonate first substrate 12: reflective layer
13 : 폴리카보네이트 제2기판 14 : 반투명층13: polycarbonate second substrate 14: translucent layer
15 : 접착층 16 : 보호층15: adhesive layer 16: protective layer
11a,13a : 피트11a, 13a: feet
이하 첨부된 도면을 참조하여 본 발명에 따른 바람직한 실시예를 상세하게 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.
도 4a-4e는 본 발명에 따른 비원형 광 디스크의 제조과정을 도시한 공정도이고, 도 5는 본 발명에 따른 제조방법에 의해 제조된 비원형 광 디스크의 저면을 도시한 사시도이다.Figures 4a-4e is a process chart showing a manufacturing process of the non-circular optical disk according to the present invention, Figure 5 is a perspective view showing the bottom surface of the non-circular optical disk manufactured by the manufacturing method according to the present invention.
도 4를 참조하여 본 발명에 따른 비원형 광디스크 제조방법을 설명하면, 먼저, 도 4a와 같이 120mm 직경의 원형 폴리카보네이트 제1기판(11)의 피트(11a) 위에 알루미늄(A1)등과 같은 반사층(12) 재료를 스퍼터링(sputtering) 기법에 의해 얇게 도포한다.Referring to FIG. 4, a non-circular optical disk manufacturing method according to the present invention will be described. First, as shown in FIG. 4A, a reflective layer such as aluminum (A1) or the like is formed on a pit 11a of a circular polycarbonate first substrate 11 having a diameter of 120 mm ( 12) Apply material thinly by sputtering technique.
그리고 도 4b와 같이 80mm 직경의 원형 폴리카보네이트 제2기판(13)의 피트(13a) 위에 금(AU)이나 은(Ag) 합금 등의 반투명층(14) 재료를 스퍼터링 기법에 의해 얇게 도포한다.4B, a semi-transparent layer 14 material such as gold (AU) or silver (Ag) alloy is applied to the pit 13a of the circular polycarbonate second substrate 13 having a diameter of 80 mm by sputtering.
그리고 도 4c와 같이 80mm 직경의 제 2 기판(13) 상면의 반투명층(14) 위에 접착층(15)을 형성하는 UV수지를 스핀 코팅한 후, 이를 120mm 직경의 제 1 기판(11) 하면에 접착 고정시킨다.4C, after spin coating the UV resin forming the adhesive layer 15 on the translucent layer 14 on the upper surface of the second substrate 13 having a diameter of 80 mm, and then attaching the UV resin to the lower surface of the first substrate 11 having a diameter of 120 mm Fix it.
그리고 도 4d와 같이 120mm 직경의 제 1 기판(11) 상면의 반사층(12) 위에 보호층(16)인 UV수지를 스핀 코팅한다.As shown in FIG. 4D, the UV resin, the protective layer 16, is spin-coated on the reflective layer 12 on the upper surface of the first substrate 11 having a diameter of 120 mm.
그리고 접착용 UV수지에 의해 일체로 접착된 120mm 직경의 제 1 기판(11)과 80mm 직경의 제 2 기판(13)을 도 4e와 같이 비원형으로 절단함으로써 도 5에 도시된 바와 같이 제1기판(11)의 하면 중앙부에 제2기판(13)이 돌출된 형태의 비원형 광 디스크(10)를 제조하게 된다.Then, the first substrate 11 having a diameter of 120 mm and the second substrate 13 having a diameter of 80 mm, which are integrally bonded by a UV resin for bonding, are cut into non-circular shapes as shown in FIG. The non-circular optical disk 10 of the shape in which the 2nd board | substrate 13 protruded in the center of the lower surface of 11 is manufactured.
이와 같은 본 발명에 따른 비원형 광 디스크 제조방법을 통해 제조된 비원형 광 디스크는, 도 6에 도시된 바와같이, 120mm 직경의 제 1 기판(11)의 하면에 부착된 80mm 직경의 제 2 기판(13)의 원형 외주면이 트레이(17)에 형성된 80mm 안착부(18)의 내측면에 안정된 상태로 안착되게 된다.As shown in FIG. 6, the non-circular optical disk manufactured by the non-circular optical disk manufacturing method according to the present invention has a second substrate of 80 mm diameter attached to the lower surface of the first substrate 11 having a 120 mm diameter. A circular outer circumferential surface of (13) is to be seated in a stable state on the inner surface of the 80 mm seating portion 18 formed in the tray 17.
따라서 본 발명에 따른 제조방법에 의해 제조된 비원형 광 디스크(10)는, 종래 돌기(5)나 돌기부(7)를 형성하여 트레이에 장착하던 비원형 광 디스크(4)(6)에 비하여 비원형 광 디스크의 센터 확보율이 현저하게 향상되게 된다.Therefore, the non-circular optical disk 10 manufactured by the manufacturing method according to the present invention is compared with the non-circular optical disk 4, 6, which is formed on the tray by forming the projection 5 or the projection 7. The center securing rate of the circular optical disc is remarkably improved.
즉, 본 발명에 따른 제조방법에 의해 제조된 비원형 광 디스크(10)는, 제1기판(11)의 하면 중앙부에 제2기판(13)이 부착되어 있으므로, 이 제2기판(13)에 의하여 광 디스크(10)의 무게 중심이 중앙 부분에 형성되어 비원형 광 디스크(10)의 안착 상태가 안정되기 때문에 트레이(17)가 인입될 때 발생되는 진동 등에 의해 비원형 광 디스크(10)가 트레이(17)의 안착 위치로부터 이탈되는 것이 어려워지기 때문이다.That is, in the non-circular optical disk 10 manufactured by the manufacturing method according to the present invention, since the second substrate 13 is attached to the center of the lower surface of the first substrate 11, the second substrate 13 is attached to the second substrate 13. Because the center of gravity of the optical disk 10 is formed in the center portion and the seating state of the non-circular optical disk 10 is stabilized, the non-circular optical disk 10 is caused by the vibration generated when the tray 17 is retracted. This is because it is difficult to detach from the seating position of the tray 17.
또한, 돌기(5)나 돌기부(7)를 형성한 종래의 비원형 광 디스크(4)(6)의 경우에는, 도 7a에 도시된 바와같이 돌기나 돌기부의 높이 만큼 광 디스크의 두께가 두꺼워져 여러 장의 광 디스크를 함께 운반이나 보관을 하게 될 때, 그 체적이 커져 운반이나 보관에 어려움이 있으나,In addition, in the case of the conventional non-circular optical disks 4 and 6 in which the projections 5 and the projections 7 are formed, the thickness of the optical disk is as thick as the height of the projections or projections, as shown in Fig. 7A. When several optical disks are transported or stored together, their volume increases, making it difficult to transport or store them.
본 발명에 따른 제조방법에 의해 제조된 비원형 광 디스크(10)에서는, 도 7b에 도시된 바와 같이 비원형 광 디스크의 가장 두꺼운 부분인 제1기판(11)과 제2기판(13)을 합한 부분의 두께가 광 디스크의 규격인 폴리카보네이트 수지의 두께인 1.2mm를 초과하지 않기 때문에 종래와 같이 두께가 두꺼워지는 것을 방지할 수 있게 되어 사용자로 하여금 취급 및 보관을 용이하게 할 수 있게 된다.In the non-circular optical disk 10 manufactured by the manufacturing method according to the present invention, as shown in FIG. 7B, the first substrate 11 and the second substrate 13, which are the thickest portions of the non-circular optical disk, are combined. Since the thickness of the portion does not exceed 1.2 mm, which is the thickness of the polycarbonate resin, which is the standard of the optical disk, the thickness can be prevented from becoming thick as in the prior art, thereby making it easier for the user to handle and store.
따라서 본 발명에 따른 제조방법에 의해 제조된 비원형 광 디스크는, 기존의 광 디스크 드라이브를 이용하여 소비자의 기호에 따른 여러 가지 외형의 광 디스크에 기록된 정보를 용이하게 재생할 수 있을 뿐만아니라, 비원형 광 디스크의 보관 및 취급이 용이하게 된다.Therefore, the non-circular optical disc manufactured by the manufacturing method according to the present invention can not only easily reproduce information recorded on various optical discs according to consumer's preference by using the conventional optical disc drive. The storage and handling of the circular optical disc becomes easy.
이상에서 설명한 바와같이 본 발명 비원형 광 디스크 제조방법에 의하면, 기존의 광 디스크 드라이브에 어떠한 개선이나 별도의 아답터 장비 없이도 광 디스크 드라이브에의 장착시 높은 센터 확보율을 보이고, 또한 보관 및 취급이 용이한 비원형 광 디스크를 얻을 수 있게 된다.As described above, according to the non-circular optical disk manufacturing method of the present invention, it shows a high center securing rate when the optical disk drive is mounted on the optical disk drive without any improvement or additional adapter equipment in the existing optical disk drive, and is easy to store and handle. A non-circular optical disc can be obtained.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019990051799A KR20010047528A (en) | 1999-11-22 | 1999-11-22 | Method for making an optical disk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019990051799A KR20010047528A (en) | 1999-11-22 | 1999-11-22 | Method for making an optical disk |
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| Publication Number | Publication Date |
|---|---|
| KR20010047528A true KR20010047528A (en) | 2001-06-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019990051799A KR20010047528A (en) | 1999-11-22 | 1999-11-22 | Method for making an optical disk |
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| Country | Link |
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| KR (1) | KR20010047528A (en) |
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1999
- 1999-11-22 KR KR1019990051799A patent/KR20010047528A/en not_active Application Discontinuation
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