JPH09306040A - Production of optical recording medium - Google Patents
Production of optical recording mediumInfo
- Publication number
- JPH09306040A JPH09306040A JP12484496A JP12484496A JPH09306040A JP H09306040 A JPH09306040 A JP H09306040A JP 12484496 A JP12484496 A JP 12484496A JP 12484496 A JP12484496 A JP 12484496A JP H09306040 A JPH09306040 A JP H09306040A
- Authority
- JP
- Japan
- Prior art keywords
- substrate
- optical recording
- recording medium
- substrates
- protective cover
- 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.)
- Pending
Links
Landscapes
- Manufacturing Optical Record Carriers (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、光学記録媒体の製
造方法に係わる。[0001] The present invention relates to a method for manufacturing an optical recording medium.
【０００２】[0002]
【従来の技術】オーディオ用、ビデオ用その他の各種情
報を記録する光学記録媒体として、その記録もしくは再
生を光照射によって行う光ディスク、光カード、光磁気
ディスク、相変化光学記録媒体等のＲＯＭ（Ｒｅａｄ
Ｏｎｌｙ Ｍｅｍｏｒｙ）型、追記型、書換え型等の光
学記録媒体があるが、例えばコンパクトディスクにおけ
るようなＲＯＭ型においてその情報記録層にデータ情
報、トラッキングサーボ信号等の記録がなされる位相ピ
ット、プリグルーブ等の微細凹凸が、また、追記型、書
換え型等の光磁気あるいは相変化等のよる光磁気媒体に
おいてもプリグルーブ等の微細凹凸の形成がなされる。2. Description of the Related Art As an optical recording medium for recording various information for audio, video, and the like, a ROM (Read) such as an optical disk, an optical card, a magneto-optical disk, and a phase change optical recording medium for recording or reproducing by light irradiation.
There are optical recording media such as only memory type, write-once type, and rewritable type. For example, in a ROM type such as a compact disc, phase pits and pregrooves in which data information, tracking servo signals, and the like are recorded in the information recording layer. Etc., and also in a magneto-optical medium such as a write-once type or a rewritable type due to magneto-optical or phase change, fine concavities and convexities such as pre-grooves are formed.
【０００３】この微細凹凸を有する情報記録層は、射出
成形法、もしくは２Ｐ（フォトポリマリゼーション）法
によって形成することができる。The information recording layer having fine irregularities can be formed by an injection molding method or a 2P (photopolymerization) method.
【０００４】光学記録媒体においては、図３にその概略
断面図を示すように、第１の基板１および第２の基板２
に、第１の情報記録層１１および第２の情報記録層１２
が形成され、これらの間に透明中間膜３３が介在され
て、両基板１および２が、第１および第２の情報記録層
１１および１２を互いに内側になるように合致された構
成とするものが提案されている。In the optical recording medium, as shown in the schematic sectional view of FIG.
First information recording layer 11 and second information recording layer 12
Is formed, and a transparent intermediate film 33 is interposed therebetween so that the substrates 1 and 2 are aligned so that the first and second information recording layers 11 and 12 are inside each other. Is proposed.
【０００５】この光学記録媒体においては、例えばポリ
カーボネート等の光透過性樹脂の射出成形によって、第
１の基板１の成形と同時に第１の基板１の一主面に、デ
ータ用記録ピット、またはプリグルーブ等の第１の微細
凹凸２１を形成し、これの上に例えばＡｌ蒸着膜等によ
る反射膜１４を被着して、第１の情報記録層１１を形成
する。In this optical recording medium, a data recording pit or a pre-recorded pit is formed on one main surface of the first substrate 1 simultaneously with the molding of the first substrate 1 by injection molding of a light transmissive resin such as polycarbonate. A first fine concavo-convex pattern 21 such as a groove is formed, and a reflective film 14 made of, for example, an Al vapor deposition film is deposited on the first fine concavo-convex pattern 21 to form the first information recording layer 11.
【０００６】一方、この第１の基板１と同様の方法によ
り、射出成形により、一主面にデータ用記録ピット、ま
たはプリグルーブ等の第２の微細凹凸２２が形成された
第２の基板２を形成し、この第２の微細凹凸２２上にＳ
ｉＮのスパッタ膜による半透明膜１３が形成されて、第
２の情報記録層１２を形成する。On the other hand, by the same method as that for the first substrate 1, the second substrate 2 is formed by injection molding with the second fine irregularities 22 such as data recording pits or pregrooves formed on one main surface. Is formed, and S is formed on the second fine unevenness 22.
The semi-transparent film 13 is formed by the sputtered film of iN, and the second information recording layer 12 is formed.
【０００７】次に、図４に示すように、回転チャック５
０の回転基台５２上に、第１の基板１を、その中心孔１
ｈに、回転チャック５０の中心軸５１を貫通させ、第１
の情報記録層１１が上を向くようにして載置し、真空吸
着により固定、保持する。その第１の情報記録層１１上
に液状光硬化性接着剤３を滴下等の方法により載せる。Next, as shown in FIG. 4, the rotary chuck 5
On the rotating base 52 of 0, the first substrate 1 is attached to the center hole 1
The central axis 51 of the rotary chuck 50 is passed through h and
The information recording layer 11 is placed so that it faces upward, and is fixed and held by vacuum suction. The liquid photocurable adhesive 3 is placed on the first information recording layer 11 by a method such as dropping.
【０００８】次に第２の基板２を、回転チャック５０の
回転基台５２上に、第２の基板２を、その中心孔２ｈ
に、回転チャック５０の中心軸５１を貫通させ、第２の
情報記録層１２と第１の情報記録層１１とが互いに内側
になるように向かい合わせ、合致させる。Next, the second substrate 2 is placed on the rotary base 52 of the rotary chuck 50, and the second substrate 2 is provided with its center hole 2h.
First, the central axis 51 of the rotary chuck 50 is penetrated, and the second information recording layer 12 and the first information recording layer 11 are faced and aligned so as to be inside each other.
【０００９】次に、図５に示すように、回転チャック５
０を高速で回転させることにより、第１の基板１および
第２の基板２の間に介在させた液状光硬化性接着剤３を
均一の延伸させる。Next, as shown in FIG.
By rotating 0 at a high speed, the liquid photo-curable adhesive 3 interposed between the first substrate 1 and the second substrate 2 is uniformly stretched.
【００１０】そして、図６に示すように第１の基板１側
から、光照射、例えば紫外線を照射することにより、液
状光硬化性接着剤３を硬化させ、第１の基板１および第
２の基板２を接着させるとともに、液状光硬化性接着剤
３による透明中間膜３３を形成し、２枚の基板を貼り合
わせた構造の光学記録媒体を形成する。Then, as shown in FIG. 6, the liquid photo-curable adhesive 3 is cured by irradiating light from the first substrate 1 side, for example, ultraviolet rays, so that the first substrate 1 and the second substrate 1 can be cured. The substrate 2 is adhered, the transparent intermediate film 33 is formed by the liquid photo-curable adhesive 3, and an optical recording medium having a structure in which two substrates are bonded together is formed.
【００１１】この光学記録媒体に対する第１の情報記録
層１１と第２の情報記録層１２からの情報の読み出し
は、図３に示すように、例えば基板１側から、実線およ
び鎖線で示す読み出し光Ｌの光照射によって行う。Reading of information from the first information recording layer 11 and the second information recording layer 12 with respect to this optical recording medium is performed by reading light from the substrate 1 side as shown by a solid line and a chain line, for example, as shown in FIG. L light irradiation is performed.
【００１２】[0012]
【発明が解決しようとする課題】しかしながら、上述し
たように、第１の基板１および第２の基板２の間に介在
された液状光硬化性接着剤３を均一に延伸させるために
回転チャック５０を高速、例えば回転速度を１０００〜
４０００ｒｐｍ程度で回転させると、液状光硬化性接着
剤３は、回転による遠心力のため、その相当量が第１の
基板１および第２の基板２の外側にはみ出して、霧状に
なって飛散する。そして、その飛散した液状光硬化性接
着剤３の一部は、図５に示すように第２の基板２の表面
や、回転基台５２上に点状に付着してしまっていた。However, as described above, the rotary chuck 50 is used to uniformly stretch the liquid photo-curable adhesive 3 interposed between the first substrate 1 and the second substrate 2. At a high speed, for example, a rotation speed of 1000 to
When the liquid photo-curable adhesive 3 is rotated at about 4000 rpm, a considerable amount of the liquid photo-curable adhesive 3 is projected to the outside of the first substrate 1 and the second substrate 2 due to the centrifugal force due to the rotation, and is scattered as a mist. To do. Then, a part of the scattered liquid photo-curable adhesive 3 has adhered to the surface of the second substrate 2 or the rotary base 52 in a dot shape as shown in FIG.
【００１３】第１および第２の基板１および２は、ポリ
カーボネート等の樹脂よりなるため、有機溶剤に対する
耐性に乏しく、このため、上述したように第２の基板２
に付着した液状光硬化性接着剤３を、第２の基板２から
有機溶剤を用いて溶解除去するには第１の基板１および
第２の基板２の耐久性の問題から困難な点が多い。Since the first and second substrates 1 and 2 are made of a resin such as polycarbonate, the first and second substrates 1 and 2 are poor in resistance to an organic solvent. Therefore, as described above, the second substrate 2 is used.
It is often difficult to dissolve and remove the liquid photo-curable adhesive 3 attached to the second substrate 2 from the second substrate 2 by using an organic solvent because of the durability problem of the first substrate 1 and the second substrate 2. .
【００１４】また、上記第１の基板１および第２の基板
２の間に介在させた液状光硬化性接着剤３を均一に延伸
させるために回転チャック５０の、基板を載置する回転
基台５２の径を図５に示したように第１および第２の基
板１および２の外径よりも大きくすると、上述したよう
に飛散した液状光硬化性接着剤３が回転基台５２上にも
付着するため、繰り返して装置を使用する場合、回転基
台５２上に付着した液状光硬化性接着剤３を排除する必
要がある等、装置の整備上、煩雑になるなどの問題がお
こり、また、装置の耐久性の低減を来す。Further, in order to uniformly stretch the liquid photo-curable adhesive 3 interposed between the first substrate 1 and the second substrate 2, the rotary base of the rotary chuck 50 on which the substrate is placed. When the diameter of 52 is larger than the outer diameters of the first and second substrates 1 and 2 as shown in FIG. 5, the liquid photo-curable adhesive 3 scattered as described above is also on the rotary base 52. When the device is repeatedly used because of adhesion, it is necessary to remove the liquid photo-curable adhesive 3 adhered on the rotary base 52, which causes problems such as complication in maintenance of the device. , The durability of the device is reduced.
【００１５】そこで本発明は、基板１および２の回転に
より飛散した液状光硬化性接着剤３が、第２の基板２や
回転基台５２の上に付着することを効果的に回避し、信
号記録再生の際にエラーの発生を防止し、光学記録媒体
の品質の向上、装置の耐久性の向上を図り、併せて第２
の基板２や回転基台５２の上に付着した液状光硬化性接
着剤３を除去する工程を省略し、光学記録媒体の作製の
ストリームライン化を図る。Therefore, the present invention effectively prevents the liquid photo-curable adhesive 3 scattered by the rotation of the substrates 1 and 2 from adhering to the second substrate 2 or the rotation base 52, and a signal It is possible to prevent the occurrence of an error during recording and reproduction, improve the quality of the optical recording medium, and improve the durability of the device.
The step of removing the liquid photo-curable adhesive 3 adhered on the substrate 2 and the rotation base 52 is omitted, and the streamline of the production of the optical recording medium is achieved.
【００１６】[0016]
【課題を解決するための手段】本発明は、回転基台上
に、順次第１の光学記録媒体用基板と、第２の光学記録
媒体用基板とを、液状光硬化性接着剤を介して重ね合わ
せて載置し、第２の光学記録媒体用基板上に、保護カバ
ー体を配置し、この状態で、回転基台を高速回転して液
状光硬化性接着剤を上記第１および第２の光学記録媒体
用基板間に延伸させる。According to the present invention, a first optical recording medium substrate and a second optical recording medium substrate are sequentially mounted on a rotary base via a liquid photo-curable adhesive. The substrates are placed one on top of the other, and the protective cover is placed on the second optical recording medium substrate. In this state, the rotary base is rotated at high speed to apply the liquid photocurable adhesive to the first and second optical recording media. It is stretched between the optical recording medium substrates.
【００１７】本発明によれば、基板上に、保護カバー体
を重ねて設置した状態で、基板を回転させ、液状光硬化
性接着剤の延伸を行ったことにより、回転中に飛散した
液状光硬化性接着剤が、基板表面に付着することを効果
的に回避することができた。これにより、信号記録再生
の際にエラーの発生を防止することができ、品質に優
れ、外観も良い光学記録媒体を得ることができた。According to the present invention, the substrate is rotated and the liquid photo-curable adhesive is stretched while the protective cover body is placed on the substrate so that the liquid light scattered during the rotation is rotated. It was possible to effectively prevent the curable adhesive from adhering to the substrate surface. As a result, it is possible to prevent an error from occurring during signal recording / reproduction, and it is possible to obtain an optical recording medium having excellent quality and good appearance.
【００１８】[0018]
【発明の実施の形態】以下、本発明の具体的な実施の形
態について説明する。以下において、ディスク状、いわ
ゆる円板状の光ディスクに適用する場合について説明す
るが、本発明は、このような光ディスクや、形状に限ら
れるものではなく、光磁気ディスク、相変化ディスク、
その他カード状、シート状等の微細凹凸を情報記録層に
有する各種光学記録媒体に適用することができる。DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of the present invention will be described. Hereinafter, the case of applying to a disc-shaped, so-called disc-shaped optical disc will be described, but the present invention is not limited to such an optical disc and the shape, and a magneto-optical disc, a phase change disc,
In addition, the present invention can be applied to various optical recording media having fine irregularities such as a card shape and a sheet shape in the information recording layer.
【００１９】この例は、図３にその概略断面図を示すよ
うに、第１および第２の情報記録層１１および１２が形
成された第１の基板１および第２の基板２が、透明中間
膜３３を介して、合致された構成の光学記録媒体を得る
場合である。In this example, as shown in the schematic sectional view of FIG. 3, the first substrate 1 and the second substrate 2 on which the first and second information recording layers 11 and 12 are formed are transparent intermediate. This is the case when an optical recording medium having a matched structure is obtained via the film 33.
【００２０】この場合は、例えばポリカーボネート等の
光透過性樹脂の射出成形によって、第１の基板１の成形
と同時に第１の基板１の一主面に図３で説明したと同様
に、データ記録ピット、またはプリグルーブ等の第１の
微細凹凸２１を形成し、これの上に例えばＡｌ蒸着膜等
による反射膜１４を被着して第１の情報記録層１１を形
成する。In this case, data recording is performed on one main surface of the first substrate 1 at the same time as the molding of the first substrate 1 by injection molding of a light-transmitting resin such as polycarbonate, as described with reference to FIG. First fine concavities and convexities 21 such as pits or pre-grooves are formed, and a reflective film 14 made of, for example, an Al vapor deposition film is deposited on the first fine concavo-convex 21 to form the first information recording layer 11.
【００２１】一方、この第１の基板１と同様の方法によ
り、射出成形により、一主面のデータ記録ピット、また
はプリグルーブ等の第２の微細凹凸２２が形成された第
２の基板２を形成し、この第２の微細凹凸２２上に例え
ばＳｉＮのスパッタ膜による半透明膜１３が形成され
て、第２の情報記録層１２を形成する。On the other hand, by the same method as that for the first substrate 1, the second substrate 2 on which the second fine irregularities 22 such as the data recording pits on one main surface or the pre-groove are formed by injection molding. The second information recording layer 12 is formed by forming a semi-transparent film 13 of, for example, a sputtered film of SiN on the second fine irregularities 22.
【００２２】そして、図１に示すように、スピンコータ
ーの円盤状の真空チャックによる回転チャック５０の回
転基台５２上に、第１の基板１を、その中心孔１ｈに、
回転チャック５０の中心軸５１を貫通させ、第１の情報
記録層１１が回転基台５２とは反対側に向くようにし
て、載置し、保持する。Then, as shown in FIG. 1, the first substrate 1 is placed in the center hole 1h thereof on the rotation base 52 of the rotation chuck 50 by the disk-shaped vacuum chuck of the spin coater.
The central axis 51 of the rotary chuck 50 is penetrated so that the first information recording layer 11 faces the side opposite to the rotary base 52, and is placed and held.
【００２３】その第１の情報記録層１１上に、液状光硬
化性接着剤３を塗布し、この上に第２の基板２を、その
中心孔２ｈに、回転チャック５０の中心軸５１を貫通さ
せ、第１の情報記録層１１と第２の情報記録層１２と
が、互いに内側になるように合致させる。The liquid photo-curable adhesive 3 is applied on the first information recording layer 11, and the second substrate 2 is penetrated through the central hole 2h of the central axis 51 of the rotary chuck 50. Then, the first information recording layer 11 and the second information recording layer 12 are aligned so as to be inside each other.
【００２４】ここで、この回転基台５２の輪郭は、基板
１および２の輪郭と一致、すなわちディスク状の光学記
録媒体を製造する場合、回転基台５２と基板１および２
の外径が同一となるようになされている。Here, the contour of the rotary base 52 matches the contours of the substrates 1 and 2, that is, in the case of manufacturing a disc-shaped optical recording medium, the rotary base 52 and the substrates 1 and 2 are the same.
The outer diameters of are the same.
【００２５】次に、図１に示すように、第２の基板２上
に保護カバー体６０を配置する。この保護カバー体６０
は、基板１および２と同様に射出成形によって作製する
ことができる。Next, as shown in FIG. 1, a protective cover body 60 is placed on the second substrate 2. This protective cover body 60
Can be manufactured by injection molding similarly to the substrates 1 and 2.
【００２６】この保護カバー体６０としては、射出成形
時に、情報記録層を構成する微細凹凸を形成せずに成形
した、いわゆる平滑面を有する基板を利用することがで
きる。このため、この保護カバー体６０と、基板１およ
び２とは各輪郭が一致、すなわちこれらは同一径となる
ようになされている。As the protective cover body 60, it is possible to use a substrate having a so-called smooth surface, which is formed without forming fine irregularities forming the information recording layer at the time of injection molding. Therefore, the contours of the protective cover 60 and the substrates 1 and 2 are the same, that is, they have the same diameter.
【００２７】また、この保護カバー体６０には、射出成
型時に円周状（リング状）の突起６１が形成され、保護
カバー体６０を第２の基板２上に配置する際には、この
突起６１が第２の基板２側に来るようにする。A circular (ring-shaped) protrusion 61 is formed on the protective cover body 60 during injection molding, and when the protective cover body 60 is arranged on the second substrate 2, the protrusion is formed. 61 is located on the second substrate 2 side.
【００２８】なお、この突起６１は、上述したように第
２の基板２上に配置した際に、基板に形成された情報記
録層形成部から外れた、情報記録再生の無効領域の位置
になるように、すなわち情報記録層形成部よりも内側
の、例えば直径１８ｍｍ程度に形成される。It should be noted that, when the protrusion 61 is arranged on the second substrate 2 as described above, it becomes a position of an ineffective area for information recording / reproduction that is out of the information recording layer forming portion formed on the substrate. Thus, that is, inside the information recording layer forming portion, for example, a diameter of about 18 mm is formed.
【００２９】次に、図２に示すように、回転チャック５
０を例えば毎分１０００〜４０００回の高速で回転させ
ることにより、第１の基板１および第２の基板２の間に
介在された液状光硬化性接着剤３を均一な厚さに延伸さ
せる。Next, as shown in FIG. 2, the rotary chuck 5
The liquid photo-curable adhesive 3 interposed between the first substrate 1 and the second substrate 2 is stretched to a uniform thickness by rotating 0 at a high speed of 1000 to 4000 times per minute.
【００３０】このとき、保護カバー体６０に形成された
突起６１は、基板の回転により保護カバー体６０と、第
２の基板２とが密接することによる互いの擦り合いによ
る擦傷が、第２の基板２の情報読み取り面に生じること
を回避する役割を有している。At this time, the protrusions 61 formed on the protective cover body 60 are scratched by rubbing each other due to the contact of the protective cover body 60 and the second substrate 2 due to the rotation of the substrate. It has a role of avoiding occurrence on the information reading surface of the substrate 2.
【００３１】また、保護カバー体６０に形成された突起
６１により、第２の基板２と、保護カバー体６０とが、
密着することを回避できるため、後にこの保護カバー体
６０を第２の基板２上から取りはずし易くするという効
果がある。Further, the second substrate 2 and the protective cover body 60 are separated from each other by the projections 61 formed on the protective cover body 60.
Since the close contact can be avoided, there is an effect that the protective cover body 60 can be easily removed from the second substrate 2 later.
【００３２】その後、第２の基板２上から、保護カバー
体６０を取りはずし、第１の基板１および第２の基板２
を、液状光硬化性接着剤３を介在させた状態で、紫外線
照射を行い、光硬化処理を行い、最終的に光学記録媒体
を得ることができる。この紫外線照射はメタルハライド
または高圧水銀ランプ等の紫外線光源７０により行うこ
とができる。After that, the protective cover body 60 is removed from the second substrate 2, and the first substrate 1 and the second substrate 2 are removed.
In the state in which the liquid photo-curable adhesive 3 is interposed, ultraviolet irradiation is performed to perform photo-curing treatment, and finally an optical recording medium can be obtained. This ultraviolet irradiation can be performed by an ultraviolet light source 70 such as a metal halide or a high pressure mercury lamp.
【００３３】上述した本発明によれば、第２の基板２上
に、保護カバー体６０を重ねて設置した状態で、回転チ
ャック５０により、第１の基板１および第２の基板２を
回転させ、液状光硬化性接着剤３の延伸を行ったことに
より、回転中に飛散した液状光硬化性接着剤３が、第２
の基板２の情報読み取り面に付着することを効果的に回
避することができた。これにより、光学記録媒体の品質
の向上を図ることができ、第２の基板２から液状光硬化
性接着剤３を除去する工程を省略することができた。According to the present invention described above, the first chuck 1 and the second chuck 2 are rotated by the rotary chuck 50 with the protective cover 60 being placed on the second chuck 2. Since the liquid photo-curable adhesive 3 is stretched, the liquid photo-curable adhesive 3 scattered during rotation is
It was possible to effectively avoid adhesion to the information reading surface of the substrate 2. Thereby, the quality of the optical recording medium can be improved, and the step of removing the liquid photocurable adhesive 3 from the second substrate 2 can be omitted.
【００３４】また、第１の基板１および第２の基板２
と、第２の基板２上に重ねた保護カバー体６０との各輪
郭を一致させたことにより、基板回転の際、飛散した液
状光硬化性接着剤３が保護カバー体６０の裏側に付着す
ることを回避することができ、これにより、保護カバー
体６０から液状光硬化性接着剤３を除去する作業を省略
することができ、光学記録媒体の製造のストリームライ
ン化を図ることができた。Further, the first substrate 1 and the second substrate 2
And the contours of the protective cover body 60 overlaid on the second substrate 2 are made to coincide with each other, so that the scattered liquid photo-curable adhesive 3 adheres to the back side of the protective cover body 60 when the substrate is rotated. This can be avoided, whereby the work of removing the liquid photocurable adhesive 3 from the protective cover body 60 can be omitted, and the production of optical recording media can be streamlined.
【００３５】また、基板１および２と、回転基台５２と
の各輪郭を一致、すなわちこれらの径を同一としたこと
により、回転基台５２上に、回転の際、飛散した液状光
硬化性接着剤３が付着することを防止することができた
ため、光学記録媒体の製造のストリームライン化を図る
ことができ、また、装置の耐久性の向上を図ることがで
きた。Further, since the respective contours of the substrates 1 and 2 and the rotary base 52 are the same, that is, the diameters thereof are the same, the liquid photo-curing property scattered on the rotary base 52 at the time of rotation. Since the adhesion of the adhesive 3 could be prevented, the production of optical recording media could be streamlined, and the durability of the apparatus could be improved.
【００３６】上述した例においては、射出成形により基
板の成形と同時に情報記録層を形成した第１および第２
の基板１および２を互いの情報記録層１１および１２を
内側にして貼り合わせた構成とした光学記録媒体を形成
する場合について説明したが、本発明は、この例に限定
されることなく、一方の基板の情報記録層形成面側と、
他方の基板の情報記録層形成面とは反対側の面とを、液
状光硬化性接着剤３を介して合致させ、貼り合わせた構
成の光学記録媒体を作製する場合についても適用するこ
とができる。In the above example, the first and second information recording layers are formed simultaneously with the molding of the substrate by injection molding.
The case of forming an optical recording medium having a structure in which the substrates 1 and 2 of No. 1 are bonded to each other with the information recording layers 11 and 12 inside is described, but the present invention is not limited to this example. The information recording layer forming surface side of the substrate,
It can also be applied to a case where the surface of the other substrate opposite to the surface on which the information recording layer is formed is aligned with the liquid photo-curable adhesive 3 to manufacture an optical recording medium having a laminated structure. .
【００３７】また、上述した例においては、射出成形に
より基板の成形と同時に情報記録層を形成した第１およ
び第２の基板１および２を互いの情報記録層１１および
１２を内側にして貼り合わせた構成とした光学記録媒体
であって、第１の基板１側から情報を読み出す、いわゆ
る片面読み出し型の光学記録媒体を作製する場合につい
て説明したが、本発明は、この例に限定されることな
く、情報記録層を微細凹凸とこの上に反射膜を蒸着させ
て形成させこれを互いに内側にして貼り合わせた構成
の、いわゆる両面読み出し型の光学記録媒体を作製する
場合についても適用することができる。Further, in the above-mentioned example, the first and second substrates 1 and 2 on which the information recording layers are formed at the same time when the substrates are formed by injection molding are bonded together with the information recording layers 11 and 12 inside. The case where an optical recording medium having the above-described configuration, in which information is read from the first substrate 1 side, that is, a so-called single-sided read type optical recording medium is manufactured has been described, but the present invention is not limited to this example. It is also applicable to the case of producing a so-called double-sided read type optical recording medium having a structure in which an information recording layer is formed by depositing a fine concavo-convex and a reflective film on the fine concavo-convex and is laminated inside each other. it can.
【００３８】また、本発明は、第１の基板１または第２
の基板２のいずれか一方を、情報記録層を形成しない、
いわゆる平滑面とし、これらの基板を液状光硬化性接着
剤３を介して合致させ、貼り合わせた構成の光学記録媒
体を作製する場合についても適用することができる。Further, the present invention provides the first substrate 1 or the second substrate.
No information recording layer is formed on either one of the substrates 2 of
It can also be applied to the case where a so-called smooth surface is formed and these substrates are aligned with each other via the liquid photo-curable adhesive 3 to fabricate an optical recording medium having a laminated structure.
【００３９】また、本発明は、例えば上述した射出成形
によって形成した情報記録層上に２Ｐ法によって情報記
録層を形成し、全体として３層以上の情報記録層を有す
る多層光学記録媒体を得る場合についても適用すること
ができる。The present invention also provides a multilayer optical recording medium in which an information recording layer is formed by the 2P method on the information recording layer formed by, for example, the above-mentioned injection molding, and which has three or more information recording layers as a whole. Can also be applied.
【００４０】また、上述したように本発明は、光ディス
クすなわち微細凹凸がデータ情報を含むものであるが、
この場合に限定されるものではなく、例えば光磁気記録
層、光照射によって相変化を生じる相変化記録層のよう
に、微細凹凸が例えばトラッキング用、アドレス用等の
プリグルーブ、ピット等を有する情報記録層による光学
記録媒体を得る場合にも適用することができ、この場合
は、微細凹凸の形成層をもしくはこれの上の層に光磁気
材料、相変化材料を形成する構成を採ることもできる。Further, as described above, in the present invention, the optical disc, that is, the fine irregularities contain data information,
The information is not limited to this case, for example, a magneto-optical recording layer, a phase change recording layer that undergoes a phase change by irradiation with light, and the fine unevenness has, for example, pregrooves for tracking, addresses, etc. It can also be applied to the case where an optical recording medium having a recording layer is obtained, and in this case, it is also possible to adopt a configuration in which a magneto-optical material or a phase change material is formed on a layer on which fine irregularities are formed or a layer above this. .
【００４１】また、上述した例では、第１の基板１およ
び第２の基板２がディスクである場合を主として説明し
たが、本発明はこの例に限定されることなく、カード状
等の各種の構造に適用することができる。Further, in the above-mentioned example, the case where the first substrate 1 and the second substrate 2 are disks was mainly described, but the present invention is not limited to this example, and various kinds of cards and the like can be used. It can be applied to the structure.
【００４２】[0042]
【発明の効果】本発明によれば、第２の基板２上に、保
護カバー体６０を重ねて設置した状態で、回転チャック
５０により、基板１および２を回転させ、液状光硬化性
接着剤３の延伸を行ったことにより、回転中に飛散した
液状光硬化性樹脂３が、第２の基板２の情報読み取り面
側に付着することを効果的に回避することができた。こ
れにより、信号記録再生の際にエラーの発生を防止する
ことができ、外観の良い光学記録媒体を得ることがで
き、また、基板に付着した液状光硬化性接着剤３を除去
する作業を省略することができた。According to the present invention, the substrates 1 and 2 are rotated by the rotary chuck 50 in a state where the protective cover body 60 is placed on the second substrate 2 so that the liquid photo-curable adhesive is formed. By performing stretching of 3, it was possible to effectively prevent the liquid photocurable resin 3 scattered during rotation from adhering to the information reading surface side of the second substrate 2. This makes it possible to prevent the occurrence of errors during signal recording / reproduction, obtain an optical recording medium having a good appearance, and omit the work of removing the liquid photocurable adhesive 3 attached to the substrate. We were able to.
【００４３】また、第１および第２の基板１および２
と、第２の基板２上に重ねた保護カバー体６０との各輪
郭を一致させたことにより、これらの回転の際、飛散し
た液状光硬化性接着剤３が、保護カバー体６０の裏側に
付着することを回避することができ、これにより、保護
カバー体６０から液状光硬化性接着剤３を除去する作業
を省略することができ、光学記録媒体の製造のストリー
ムライン化を図ることができた。Also, the first and second substrates 1 and 2
By aligning the contours of the protective cover body 60 and the protective cover body 60 stacked on the second substrate 2, the liquid photo-curable adhesive 3 scattered during the rotation of the protective cover body 60 on the back side of the protective cover body 60. Adhesion can be avoided, whereby the work of removing the liquid photocurable adhesive 3 from the protective cover body 60 can be omitted, and the production of optical recording media can be streamlined. It was
【００４４】また、第１の基板１および第２の基板２
と、回転基台５２との各輪郭を一致させたことにより、
回転の際、回転基台５２上に、飛散した液状光硬化性接
着剤３が付着することを回避することができたため、回
転基台５２から液状光硬化性接着剤３を除去する作業を
省略することができ、光学記録媒体の製造のストリーム
ライン化を図ることができ、また、これにより装置の耐
久性の向上を図ることができた。In addition, the first substrate 1 and the second substrate 2
By matching the contours of the rotation base 52 with
At the time of rotation, it was possible to avoid the scattered liquid photo-curable adhesive 3 from adhering to the rotary base 52. Therefore, the work of removing the liquid photo-curable adhesive 3 from the rotary base 52 was omitted. It was possible to achieve a streamline production of the optical recording medium, and it was possible to improve the durability of the apparatus.
【図１】本発明による光学記録媒体の一製造工程を示
す。FIG. 1 shows one manufacturing process of an optical recording medium according to the present invention.
【図２】本発明による光学記録媒体の一製造工程を示
す。FIG. 2 shows one manufacturing process of an optical recording medium according to the present invention.
【図３】多層光学記録媒体の概略断面図を示す。FIG. 3 shows a schematic cross-sectional view of a multilayer optical recording medium.
【図４】従来における多層光学記録媒体の一製造工程を
示す。FIG. 4 shows one manufacturing process of a conventional multilayer optical recording medium.
【図５】従来における多層光学記録媒体の一製造工程を
示す。FIG. 5 shows one manufacturing process of a conventional multilayer optical recording medium.
【図６】従来および本発明における多層光学記録媒体の
一製造工程を示す。FIG. 6 shows one manufacturing process of a conventional multilayer optical recording medium and the present invention.
１ 第１の基板、２ 第２の基板、１ｈ 第１の基板の
中心孔、２ｈ 第２の基板の中心孔、３ 液状光硬化性
接着剤、１１ 第１の情報記録層、１２ 第２の情報記
録層、１３ 半透明膜、１４ 反射膜、２１ 第１の微
細凹凸、２２第２の微細凹凸、５０ 回転チャック、５
１ 回転基台の中心軸、５２ 回転基台、６０ 保護カ
バー体、６１ 突起、７０ 光源DESCRIPTION OF SYMBOLS 1 1st board | substrate, 2nd board | substrate, 1h Center hole of 1st board | substrate, 2h Center hole of 2nd board | substrate 3 Liquid photocurable adhesive agent, 11 1st information recording layer, 12 2nd Information recording layer, 13 semi-transparent film, 14 reflective film, 21 first fine unevenness, 22 second fine unevenness, 50 rotary chuck, 5
1 central axis of rotation base, 52 rotation base, 60 protective cover body, 61 protrusion, 70 light source
Claims (3)
用基板とを、液状光硬化性接着剤を介して重ね合わせて
載置し、 該第２の光学記録媒体用基板上に、保護カバー体を配置
し、 この状態で、上記回転基台を高速回転して上記液状光硬
化性接着剤を上記第１および第２の光学記録媒体用基板
間に延伸させることを特徴とする光学記録媒体の製造方
法。1. A first optical recording medium substrate and a second optical recording medium substrate are sequentially placed on a rotating base while being superposed on each other with a liquid photocurable adhesive interposed therebetween. A protective cover is disposed on the second optical recording medium substrate, and in this state, the rotary base is rotated at high speed to apply the liquid photocurable adhesive to the first and second optical recording media. A method for manufacturing an optical recording medium, which comprises stretching between substrates.
板と、上記回転基台との各輪郭が一致されたことを特徴
とする請求項１に記載の光学記録媒体の製造方法。2. The method of manufacturing an optical recording medium according to claim 1, wherein the contours of the first and second optical recording medium substrates and the rotary base are matched with each other.
板と、上記保護カバー体との各輪郭が一致されたことを
特徴とする請求項１に記載の光学記録媒体の製造方法。3. The method of manufacturing an optical recording medium according to claim 1, wherein the contours of the first and second optical recording medium substrates and the protective cover body are matched with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12484496A JPH09306040A (en) | 1996-05-20 | 1996-05-20 | Production of optical recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12484496A JPH09306040A (en) | 1996-05-20 | 1996-05-20 | Production of optical recording medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09306040A true JPH09306040A (en) | 1997-11-28 |
Family
ID=14895503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12484496A Pending JPH09306040A (en) | 1996-05-20 | 1996-05-20 | Production of optical recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09306040A (en) |
-
1996
- 1996-05-20 JP JP12484496A patent/JPH09306040A/en active Pending
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