JPH0370865B2 - - Google Patents
Info
- Publication number
- JPH0370865B2 JPH0370865B2 JP504084A JP504084A JPH0370865B2 JP H0370865 B2 JPH0370865 B2 JP H0370865B2 JP 504084 A JP504084 A JP 504084A JP 504084 A JP504084 A JP 504084A JP H0370865 B2 JPH0370865 B2 JP H0370865B2
- Authority
- JP
- Japan
- Prior art keywords
- disk
- reflective film
- disc
- substrate
- digital signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000000758 substrate Substances 0.000 claims description 19
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 238000007740 vapor deposition Methods 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 239000011347 resin Substances 0.000 description 8
- 229920005989 resin Polymers 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 239000004065 semiconductor Substances 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000007738 vacuum evaporation Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
- G11B23/0057—Intermediate mediums, i.e. mediums provided with an information structure not specific to the method of reproducing or duplication such as matrixes for mechanical pressing of an information structure ; record carriers having a relief information structure provided with or included in layers not specific for a single reproducing method; apparatus or processes specially adapted for their manufacture
- G11B23/0064—Intermediate mediums, i.e. mediums provided with an information structure not specific to the method of reproducing or duplication such as matrixes for mechanical pressing of an information structure ; record carriers having a relief information structure provided with or included in layers not specific for a single reproducing method; apparatus or processes specially adapted for their manufacture mediums or carriers characterised by the selection of the material
- G11B23/0078—Intermediate mediums, i.e. mediums provided with an information structure not specific to the method of reproducing or duplication such as matrixes for mechanical pressing of an information structure ; record carriers having a relief information structure provided with or included in layers not specific for a single reproducing method; apparatus or processes specially adapted for their manufacture mediums or carriers characterised by the selection of the material information structure layers using metallic or dielectric coatings
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/04—Coating on selected surface areas, e.g. using masks
- C23C14/042—Coating on selected surface areas, e.g. using masks using masks
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing Optical Record Carriers (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明はビデオデイスク、デイジタルオーデイ
オデイスク（例えばコンパクトデイスク）、静止
画、文書フアイルなどのデイジタル信号記録再生
デイスクの製造方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a method for manufacturing digital signal recording and reproducing disks such as video disks, digital audio disks (eg, compact disks), still images, document files, and the like.
従来例の構成とその問題点
この種のデイジタル信号記録再生デイスクは、
その情報密度が極めて大きいことや、Ｓ／Ｎ、ノ
イズなど少ないことで情報媒体として有望視さ
れ、ビデオデイスクやデイジタルオーデイオデイ
スクなどとして商品化されている。Conventional structure and its problems This type of digital signal recording/reproducing disk is
Due to its extremely high information density, low S/N ratio, and low noise, it is seen as a promising information medium, and has been commercialized as video discs, digital audio discs, etc.
第１図に一般的なデイジタルオーデイオデイス
クの概要を示す。これはPCM変換されたデイジ
タル信号が樹脂基板に凹凸状のピツト列状に記録
され、これが半導体レーザによつて再生されるも
のである。第１図において１はデイスク全体、２
は樹脂基板、３は凹凸状ピツト列状に刻まれたデ
イジタル信号、４はその表面に形成された反射
膜、５は反射膜４の表面にコーテイングされた保
護膜、６はデイスク読取面より照射される半導体
レーザである。 FIG. 1 shows an overview of a general digital audio disk. In this system, a PCM-converted digital signal is recorded on a resin substrate in the form of an uneven pit array, and this is reproduced by a semiconductor laser. In Figure 1, 1 is the entire disk, 2
3 is a resin substrate, 3 is a digital signal engraved in the form of an uneven pit row, 4 is a reflective film formed on its surface, 5 is a protective film coated on the surface of the reflective film 4, and 6 is irradiated from the disk reading surface. This is a semiconductor laser.
ここで反射膜４はデイジタル信号３を半導体レ
ーザ６により再生する場合に、照射光を反射させ
るために必要なものである。また一般的に、この
反射膜は第１図ａに示すように、デイスク最外周
よりやゝ内側と、中心孔よりやゝ外側とに反射膜
の無い形状である。 Here, the reflective film 4 is necessary to reflect the irradiated light when the digital signal 3 is reproduced by the semiconductor laser 6. Generally, this reflective film has a shape in which there is no reflective film slightly inside the outermost periphery of the disk and slightly outside the center hole, as shown in FIG. 1a.
反射膜作成は一般的には真空蒸着などの方法が
用いられる。 A method such as vacuum evaporation is generally used to create the reflective film.
第２図は選択的に反射膜を作成する従来のデイ
ジタル信号記録再生デイスクの製造方法を示す。 FIG. 2 shows a conventional method of manufacturing a digital signal recording/reproducing disk in which a reflective film is selectively formed.
第２図ａは蒸着面から見た平面図、第２図ｂは
断面図を示す。基板７の上に樹脂基板２が置か
れ、その内周の突出した部分８に内周の覆い治具
９が置かれ、外周部には外周覆い治具１０が置か
れる。Al蒸着の場合、蒸発したAlがデイスク表
面に付着し、内外周覆つた反射膜が形成される。
この場合、一つの基板に内外周の独立した覆い治
具を必要とすることや、これらの治具を蒸着毎に
取付、取はずしが必要なこと、また治具に付着し
たAl粉末が樹脂基板に付着し、ピンホールに結
びつくなど、信頼性に欠け、量産化に適さないな
どの問題点を有していた。 FIG. 2a shows a plan view as seen from the vapor deposition surface, and FIG. 2b shows a sectional view. A resin substrate 2 is placed on the substrate 7, an inner periphery covering jig 9 is placed on the protruding portion 8 of the inner periphery, and an outer periphery covering jig 10 is placed on the outer periphery. In the case of Al vapor deposition, the evaporated Al adheres to the disk surface, forming a reflective film covering the inner and outer peripheries.
In this case, separate covering jigs for the inner and outer peripheries are required for one substrate, these jigs must be attached and removed after each vapor deposition, and Al powder attached to the jigs may be removed from the resin substrate. This has led to problems such as adhesion to surfaces and formation of pinholes, making it unreliable and unsuitable for mass production.
発明の目的
本発明は、これらの問題点を解消するもので、
大量に連続的に、早く、信頼性も高く、膜質も安
定した反射膜を作成することのできるデイジタル
信号記録再生デイスクの製造方法を提供するもの
である。Purpose of the invention The present invention solves these problems.
The present invention provides a method for manufacturing a digital signal recording/reproducing disk, which can produce a reflective film in large quantities, continuously, rapidly, with high reliability, and with stable film quality.
発明の構成
本発明は、デイスクの外周部分を保持する基板
と、デイスクの内周部分を保持する円板とを設け
これら基板と円板とをデイスク表面より５mm以上
の距離で複数の連結棒にて連結し、上記連結棒の
側から蒸着し、デイスクの最外周よりやゝ内周部
分と、デイスク中心孔よりやゝ外周部分の２個所
を覆い選択的に反射膜を作成するようにしたもの
である。Structure of the Invention The present invention includes a substrate that holds the outer circumferential portion of the disk and a disc that holds the inner circumferential portion of the disk, and these substrates and the disk are connected to a plurality of connecting rods at a distance of 5 mm or more from the disk surface. A reflective film is selectively formed by vapor-depositing from the side of the connecting rod to cover two areas: the inner circumference slightly from the outermost circumference of the disk, and the outer circumferential area slightly from the center hole of the disk. It is.
実施例の説明
第３図に本発明のデイジタル信号記録再生デイ
スクの製造方法の一実施例を示す。第３図ａは断
面図、第３図ｂは蒸着側からの平面図である。DESCRIPTION OF EMBODIMENTS FIG. 3 shows an embodiment of the method for manufacturing a digital signal recording/reproducing disk of the present invention. FIG. 3a is a sectional view, and FIG. 3b is a plan view from the vapor deposition side.
基板１１に切り込み部を設けたデイスク外周部
分を保持する部分１２とデイスク内周部分を保持
する円板１３とを設け、樹脂基板２はこれらの間
に置かれている。また、上記基板１１と上記円板
１３とは樹脂基板２の蒸着面より、距離10mmの位
置で３本の連結棒１４にて連結されている。Al
が真空蒸着された場合に、デイスク外周部分を保
持する部分１２と内周円板１３の２個所は蒸着さ
れずに、他の部分だけが蒸着され選択的に反射膜
を作成することができる。 A substrate 11 is provided with a notched portion 12 for holding the outer circumferential portion of the disk and a disk 13 for holding the inner circumferential portion of the disk, and the resin substrate 2 is placed between these portions. Further, the substrate 11 and the disk 13 are connected by three connecting rods 14 at a distance of 10 mm from the vapor deposition surface of the resin substrate 2. Al
When the disc is vacuum-deposited, the two parts, the part 12 that holds the outer circumferential part of the disk and the inner circumferential disk 13, are not vapor-deposited, and only the other parts are vapor-deposited to selectively form a reflective film.
樹脂基板の蒸着面と連結棒との距離は短かけれ
ば、連結棒の影が生じ反射膜は完全に付着されな
い。反対に距離が長ければマスキングに対して有
利であるが装置の小型化に適さないことなどか
ら、デイスク表面と連結棒との距離は５mm以上が
適している。 If the distance between the vapor deposition surface of the resin substrate and the connecting rod is short, the connecting rod will cast a shadow and the reflective film will not be completely adhered. On the other hand, if the distance is long, it is advantageous for masking, but it is not suitable for downsizing the device, so the distance between the disk surface and the connecting rod is preferably 5 mm or more.
第４図は本発明の他の実施例であり、４枚のデ
イスクを同時に反射膜を作成する場合を示す。第
４図ａは断面図（第４図ｂのＣ−Ｃ断面に相当す
る）、第４図ｂは蒸着面からの平面図である。 FIG. 4 shows another embodiment of the present invention, in which reflective films are formed on four disks at the same time. FIG. 4a is a sectional view (corresponding to the CC cross section in FIG. 4b), and FIG. 4b is a plan view from the vapor deposition surface.
同一基板１１に４個所のデイスク外周部分を保
持する部分１２を設け、同数のデイスク内周部分
を保持する円板１３を設ける。連結棒１５によ
り、上記基板１１と上記円板１３とを、デイスク
表面より距離10mmを保ち連結する。Alが真空蒸
着された場合に、デイスク外周部分と内周部分と
が蒸着されずに他の部分だけが蒸着され、選択的
に反射膜を作成することができる。 The same substrate 11 is provided with four portions 12 for holding the outer periphery of the disk, and the same number of disks 13 for holding the inner periphery of the disk. A connecting rod 15 connects the substrate 11 and the disk 13 at a distance of 10 mm from the disk surface. When Al is vacuum-deposited, the outer circumferential portion and inner circumferential portion of the disk are not vapor-deposited, but only the other portions are vapor-deposited, making it possible to selectively create a reflective film.
この場合、４枚同時に反射膜を作成できるので
効率が良い。 In this case, four reflective films can be formed at the same time, which is efficient.
発明の効果
以上のように本発明によれば、デイスクの外周
部分を保持する基板と、デイスクの内周部分を保
持する円板とを設け、これらを複数の連結棒で連
結し、真空蒸着等で選択的に反射膜を作成するた
め、設備が簡単でしかもデイスクの取付や取出し
が容易で、早く、量産性に適している。また、治
具に付着した蒸着粉末の影響は無いため、ピンホ
ールなど膜質に不安定要因がないほどの信頼性が
向上し、安価にデイスクを作成することができ
る。Effects of the Invention As described above, according to the present invention, a substrate that holds the outer circumferential portion of the disk and a disk that holds the inner circumferential portion of the disk are provided, and these are connected by a plurality of connecting rods, and vacuum evaporation or the like is performed. Since the reflective film is selectively created using the method, the equipment is simple and the disks can be easily installed and removed, making it quick and suitable for mass production. In addition, since there is no effect of vapor deposited powder adhering to the jig, reliability is improved to such an extent that there are no factors such as pinholes to destabilize the film quality, and disks can be manufactured at low cost.
第１図ａ，ｂ，ｃは一般的なデイジタル信号記
録再生デイスクの平面図、断面図、および要部拡
大図、第２図ａ，ｂは従来のデイジタル信号記録
再生デイスクの製造方法を示す平面図と断面図、
第３図ａ，ｂは本発明の一実施例を示す断面図と
平面図、第４図ａ，ｂは本発明の他の実施例を示
す断面図と平面図である。
１……デイスク、２……樹脂基板、３……デイ
ジタル信号、４……反射膜、５……保護膜、６…
…半導体レーザ、１１……基板、１２……デイス
ク外周部分を保持する部分、１３……デイスク内
周部分を保持する円板、１４，１５……連結棒。
Figures 1a, b, and c are a plan view, a sectional view, and an enlarged view of essential parts of a general digital signal recording/reproducing disk, and Figures 2a, b are plan views showing a conventional method of manufacturing a digital signal recording/reproducing disk. Diagrams and cross sections,
FIGS. 3a and 3b are a sectional view and a plan view showing one embodiment of the present invention, and FIGS. 4a and 4b are a sectional view and a plan view showing another embodiment of the invention. DESCRIPTION OF SYMBOLS 1... Disk, 2... Resin substrate, 3... Digital signal, 4... Reflective film, 5... Protective film, 6...
... Semiconductor laser, 11 ... Substrate, 12 ... Portion for holding the outer peripheral portion of the disk, 13 ... Disc plate for holding the inner peripheral portion of the disk, 14, 15 ... Connecting rod.
Claims (1)
持する部分と、それと同数のデイスク内周部分を
保持する円板とを設け、上記基板と上記複数個の
円板とを、デイスク表面より５mm以上離れた連結
棒にて連結し、デイスク表面に上記連結棒の置か
れた側から蒸着等でデイスク表面に反射膜を設け
ることにより、上記円板に覆われたデイスク中心
孔よりやゝ外周部分と、上記基板に覆われたデイ
スク最外周よりやゝ内周部分との間に、選択的に
反射膜を設けることを特徴とするデイジタル信号
記録再生デイスクの製造方法。1. A part that holds a plurality of outer peripheral parts of the disk and a disc that holds the same number of inner peripheral parts of the disc are provided in the same board, and the board and the plurality of discs are separated by 5 mm or more from the surface of the disc. By connecting them with separate connecting rods and providing a reflective film on the disk surface by vapor deposition or the like from the side where the connecting rod is placed, the outer peripheral part of the disk is located a little further away from the center hole of the disk covered by the disk. . A method of manufacturing a digital signal recording/reproducing disk, characterized in that a reflective film is selectively provided between the outermost portion of the disk covered by the substrate and the slightly inner portion thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59005040A JPS60150245A (en) | 1984-01-13 | 1984-01-13 | Manufacturing method for digital signal recording/playback disc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59005040A JPS60150245A (en) | 1984-01-13 | 1984-01-13 | Manufacturing method for digital signal recording/playback disc |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60150245A JPS60150245A (en) | 1985-08-07 |
| JPH0370865B2 true JPH0370865B2 (en) | 1991-11-11 |
Family
ID=11600324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59005040A Granted JPS60150245A (en) | 1984-01-13 | 1984-01-13 | Manufacturing method for digital signal recording/playback disc |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60150245A (en) |
-
1984
- 1984-01-13 JP JP59005040A patent/JPS60150245A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60150245A (en) | 1985-08-07 |
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