JPH0973666A - Optical recording medium and its production and apparatus for production - Google Patents
Optical recording medium and its production and apparatus for productionInfo
- Publication number
- JPH0973666A JPH0973666A JP7248550A JP24855095A JPH0973666A JP H0973666 A JPH0973666 A JP H0973666A JP 7248550 A JP7248550 A JP 7248550A JP 24855095 A JP24855095 A JP 24855095A JP H0973666 A JPH0973666 A JP H0973666A
- Authority
- JP
- Japan
- Prior art keywords
- recording medium
- optical recording
- initialization
- pattern
- data
- 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
- Optical Record Carriers And Manufacture Thereof (AREA)
- Manufacturing Optical Record Carriers (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、初期化に改良を加
えた光記録媒体および光記録方法、光記録媒体の製造方
法および製造装置に関し、とくに相変化型光記録媒体の
初期化の改良に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical recording medium and an optical recording method which are improved in initialization, a manufacturing method and a manufacturing apparatus of the optical recording medium, and more particularly to an improvement in initialization of a phase change type optical recording medium. .
【０００２】[0002]
【従来の技術】光記録媒体は、基板上に光学的に記録再
生可能な情報記録部を設け、文書やデータ等のファイル
用ディスクとして用いられている。光記録媒体を高速で
回転させながら、１μｍ程度に絞り込んだレーザ光を照
射し、焦点調整および位置検出を行いながら、記録層か
らデータを読み出したり記録層にデータを記録したりし
ている。2. Description of the Related Art An optical recording medium is provided with an information recording section capable of optically recording and reproducing information on a substrate, and is used as a disk for files such as documents and data. While rotating the optical recording medium at a high speed, a laser beam narrowed down to about 1 μm is irradiated to read data from the recording layer or record data on the recording layer while performing focus adjustment and position detection.
【０００３】この記録層を、レーザ光により結晶とアモ
ルファスとの可逆変化が可能な特定の合金から構成し、
オーバライト記録まで可能とした相変化型などの記録層
の反射率の差異に基づいてデータが読み取られる光記録
媒体は既に知られている。この相変化型光記録媒体にお
いては、基板上に記録層および保護層等の他の層を形成
した後、レーザ光などを用いて上記記録層を結晶化させ
る初期化が行われる。多くの場合、レーザ光は光記録媒
体の全体を同時に初期化するのではなく、媒体の一部分
を初期化する描画領域をスキャンしながら全体を順次初
期化する。このように描画領域を移動させながら初期化
等の作業を行うものを描画型書込手段という。初期化
は、従来、ユーザサイドで必要とするデータ記録領域お
よびメーカサイドで所定のフォーマット等のために必要
となるメーカ使用領域の、予め設定した初期化領域につ
いてのみ行っていた。[0003] This recording layer is made of a specific alloy which can be reversibly changed between a crystal and an amorphous by a laser beam,
An optical recording medium in which data can be read based on a difference in reflectance of a recording layer, such as a phase change type recording medium capable of performing overwrite recording, is already known. In this phase-change type optical recording medium, after forming another layer such as a recording layer and a protective layer on a substrate, initialization for crystallizing the recording layer using a laser beam or the like is performed. In many cases, the laser beam does not initialize the entire optical recording medium at the same time, but sequentially initializes the entire recording region while scanning a drawing area that initializes a part of the medium. Such a writing type writing means performs operations such as initialization while moving the drawing area. Conventionally, the initialization has been performed only for a preset initialization area of a data recording area required on the user side and a maker use area required for a predetermined format on the maker side.
【０００４】また、この初期化には、専用の初期化装置
を使用しているが、光記録媒体の製造工程においては、
大量の光記録媒体が連続的に流れてくるので、それらを
順次初期化するために、多くの場合、通常複数台の初期
化装置が並列に設定されている。A special initialization device is used for this initialization, but in the manufacturing process of the optical recording medium,
Since a large amount of optical recording media flow continuously, in order to initialize them in order, a plurality of initialization devices are usually set in parallel in many cases.
【０００５】このように複数台の初期化装置を使用する
場合、後に何らかの初期化に起因するトラブルや欠陥が
発生した場合、どの装置で初期化したかを、あるいは単
一の装置を用いる場合であっても同一装置であっても処
理の日時の違い等の製造情報を判別できると便利であ
る。When a plurality of initialization devices are used as described above, when a trouble or defect due to some initialization occurs later, which device is used for initialization or when a single device is used. It is convenient to be able to determine the manufacturing information such as the difference in the date and time of processing even if there is the same device.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、従来
は、上記のような判別情報をディスク上に記録するに
は、たとえば別途スタンプ、刻印等の手段が用いられ、
どの装置で初期化されたかを区別していた。つまり、初
期化装置のほかに特別の記録手段を用意し、管理する必
要があった。However, conventionally, in order to record the above-mentioned discrimination information on the disc, for example, a means such as a stamp or an engraving is used separately,
It was distinguishing which device was initialized. That is, it is necessary to prepare and manage special recording means in addition to the initialization device.
【０００７】本発明の課題は、上記現状に鑑み、相変化
型などの光記録媒体に、簡便に、かつ、低コストで媒体
の製造情報等の付加的情報を記録する方法およびかかる
情報を記録した光記録媒体およびその製造方法を提供す
ることにある。SUMMARY OF THE INVENTION In view of the above situation, an object of the present invention is to provide a method for recording additional information such as manufacturing information of a medium easily and at low cost on an optical recording medium such as a phase change type recording medium and such information. Another object of the present invention is to provide an optical recording medium and a manufacturing method thereof.
【０００８】また、本発明の別の課題は、上記付加的情
報を肉眼で読み取ることができ、製造工程の管理や、ユ
ーザ独自の情報を可視的に記録する方法および装置等を
提供することにある。Another object of the present invention is to provide a method and apparatus that can read the above-mentioned additional information with the naked eye, control the manufacturing process, and visually record information unique to the user. is there.
【０００９】[0009]
【課題を解決するための手段】上記課題を解決するため
に、本発明の光記録媒体は、記録層のデータ記録領域外
の領域に光学的に読取り可能なパターンが記録されてな
ることを特徴とするものからなる。In order to solve the above-mentioned problems, the optical recording medium of the present invention is characterized in that an optically readable pattern is recorded in an area outside the data recording area of the recording layer. And consists of
【００１０】上記パターンは、たとえば、記録層のデー
タ書込手段または描画型書込手段により書き込まれたも
のである。この光記録媒体は、たとえば、記録層の光反
射率の差異に基づいてデータが読み取られるべきもので
ある。また、上記パターンは、肉眼的に認識可能なもの
であることが好ましい。The above-mentioned pattern is written by, for example, the data writing means or the drawing type writing means of the recording layer. In this optical recording medium, for example, data should be read based on the difference in light reflectance of the recording layer. Further, it is preferable that the pattern is visually recognizable.
【００１１】また、本発明に係る光記録方法は、光記録
媒体の記録層のデータ記録領域外の領域に光学的に読取
り可能なパターンを記録することを特徴とする方法から
なる。The optical recording method according to the present invention comprises a method of recording an optically readable pattern in a region outside the data recording region of the recording layer of the optical recording medium.
【００１２】本発明に係る光記録装置は、光記録媒体の
記録層にデータを書き込むデータ書込手段を有し、該デ
ータ書込手段は、光記録媒体の記録層のデータ記録領域
外の領域に光学的に読取り可能なパターンをも書き込む
ものであることを特徴とするものからなる。The optical recording apparatus according to the present invention has data writing means for writing data in the recording layer of the optical recording medium, and the data writing means is an area outside the data recording area of the recording layer of the optical recording medium. It is also characterized in that an optically readable pattern is also written on it.
【００１３】また、本発明に係る光記録媒体の製造方法
は、光記録媒体の記録層のデータを描画型初期化装置に
より初期化する初期化工程を有する光記録媒体の製造方
法において、光記録媒体の既定初期化領域外に前記描画
型初期化装置により初期化部位と非初期化部位とからな
るパターンを書き込むパターン書込工程を有することを
特徴とする方法からなる。The optical recording medium manufacturing method according to the present invention is an optical recording medium manufacturing method including an initialization step of initializing data of a recording layer of the optical recording medium by a drawing type initialization device. The method further comprises a pattern writing step of writing a pattern composed of an initialized portion and a non-initialized portion by the drawing type initialization device outside the default initialized area of the medium.
【００１４】上記パターンは、光記録媒体の製造情報等
を表すものである。The above pattern represents manufacturing information of the optical recording medium.
【００１５】また、本発明に係る光記録媒体の製造方法
は、光記録媒体の記録層のデータを複数の描画型初期化
装置により初期化する初期化工程を有する光記録媒体の
製造方法において、光記録媒体の既定初期化領域外に前
記描画型初期化装置により初期化部位と非初期化部位と
からなり前記各描画型初期化装置毎に異なるパターンを
書き込むパターン書込工程を有することを特徴とする方
法からなる。Further, the method of manufacturing an optical recording medium according to the present invention is a method of manufacturing an optical recording medium having an initialization step of initializing data of a recording layer of the optical recording medium by a plurality of drawing type initialization devices, A pattern writing step of writing a different pattern for each of the drawing type initialization devices by the drawing type initialization device outside the default initialization area of the optical recording medium. And the method.
【００１６】上記パターンとしては、たとえば光学的識
別記号または文字パターンに設定される。The pattern is set to, for example, an optical identification symbol or a character pattern.
【００１７】さらに、本発明に係る光記録媒体の製造装
置は、光記録媒体の記録層のデータを初期化する複数の
描画型初期化装置を備えてなる光記録媒体の製造装置に
おいて、各描画型初期化装置は、光記録媒体の既定初期
化領域外に前記描画型初期化装置により初期化部位と非
初期化部位とからなり前記各描画型初期化装置毎に異な
るパターンを書き込むものであることを特徴とするもの
からなる。Further, the optical recording medium manufacturing apparatus according to the present invention is an optical recording medium manufacturing apparatus comprising a plurality of drawing type initialization devices for initializing the data of the recording layer of the optical recording medium. The pattern initialization device writes a different pattern for each drawing pattern initialization device by the drawing pattern initialization device outside the default initialization area of the optical recording medium. It is characterized by that.
【００１８】上記パターンは、バーコードや文字パター
ンあるいは特定の図形パターンとして設定することがで
きる。このパターンは、光記録媒体の規定初期化領域
外、たとえばその内周側のマージン部、あるいは外周側
マージン部に記録される。上記パターンは、たとえば描
画型書込手段の書込および非書込の状態の２値ディジタ
ル記録をパルス変調によって行ってもよい。The above pattern can be set as a bar code, a character pattern, or a specific graphic pattern. This pattern is recorded outside the specified initialization area of the optical recording medium, for example, in the margin portion on the inner peripheral side or the margin portion on the outer peripheral side. For the above pattern, binary digital recording of writing and non-writing by the drawing type writing means may be performed by pulse modulation.
【００１９】[0019]
【発明の実施の形態】以下に、本発明の望ましい実施の
形態について、図面を参照して説明する。本発明に係る
光記録媒体としては、光を用いてデータを書き込むもの
または記録部位各部の光学的性質（光反射率、分光反射
率、反射光の光偏波状態など）の変化または差異に基づ
いてデータの読取りを行うものであればよく、光磁気記
録媒体、相変化型光記録媒体などの追記型または書換可
能型の光記録媒体などが用いられる。とくに、相変化型
光記録媒体のように光反射率または分光反射率（色）の
差異に基づいてデータを読み取るタイプの媒体では、記
録されたパターンを肉眼的に認識することができるため
好ましい。以下、相変化型光記録媒体を例にとって説明
する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. The optical recording medium according to the present invention is based on one that writes data using light or based on a change or difference in optical properties (optical reflectance, spectral reflectance, optical polarization state of reflected light, etc.) of each portion of the recording region. Any data can be read out by using a write-once or rewritable optical recording medium such as a magneto-optical recording medium or a phase change optical recording medium. In particular, a medium of a type that reads data based on a difference in light reflectance or spectral reflectance (color) such as a phase change optical recording medium is preferable because the recorded pattern can be visually recognized. Hereinafter, the phase change type optical recording medium will be described as an example.
【００２０】相変化型光記録媒体は、通常透明な基板上
に記録層を設けたものであり、記録層構成に、レーザ光
により結晶とアモルファスとの可逆変化が可能な特定の
金属が用いられている。基板上の層構成としては、たと
えば、透明な基板上に、少なくとも第１保護層／記録層
／第２保護層／反射層を有する層構成とすることができ
る。The phase-change type optical recording medium generally has a recording layer provided on a transparent substrate, and the recording layer is composed of a specific metal capable of reversibly changing between crystalline and amorphous by laser light. ing. The layer configuration on the substrate may be, for example, a layer configuration having at least a first protective layer / recording layer / second protective layer / reflective layer on a transparent substrate.
【００２１】相変化型光記録媒体の記録層には、たとえ
ば、Ｔｅ−Ｇｅ−Ｓｂ−Ｐｄ合金、Ｔｅ−Ｇｅ−Ｓｂ−
Ｐｄ−Ｎｂ合金、Ｎｂ−Ｇｅ−Ｓｂ−Ｔｅ合金、Ｐｔ−
Ｇｅ−Ｓｂ−Ｔｅ合金、Ｎｉ−Ｇｅ−Ｓｂ−Ｔｅ合金、
Ｇｅ−Ｓｂ−Ｔｅ合金、Ｃｏ−Ｇｅ−Ｓｂ−Ｔｅ合金、
Ｉｎ−Ｓｂ−Ｔｅ合金、Ｉｎ−Ｓｅ合金、およびこれら
を主成分とする合金が用いられる。とくにＴｅ−Ｇｅ−
Ｓｂ−Ｐｄ合金、Ｔｅ−Ｇｅ−Ｓｂ−Ｐｄ−Ｎｂ合金
が、記録消去再生を繰り返しても劣化が起こり難く、さ
らに熱安定性が優れているので好ましい。とくに望まし
い記録膜組成としては、たとえば次式で表される範囲に
あることが熱安定性と繰り返し安定性に優れている点か
ら好ましい。 Ｍz （Ｓｂx Ｔｅ(1-x) ）1-y-z （Ｇｅ0.5 Ｔｅ0.5 ）y ０．３５≦ｘ≦０．５ ０．２０≦ｙ≦０．５ ０ ≦ｚ≦０．０５ ここでＭはパラジウム、ニオブ、白金、銀、金、コバル
トから選ばれる少なくとも一種の金属、Ｓｂはアンチモ
ン、Ｔｅはテルル、Ｇｅはゲルマニウムを表す。また、
ｘ、ｙ、ｚおよび数字は各元素の原子の数（各元素のモ
ル数）を表す。とくにパラジウム、ニオブについては少
なくとも一種を含むことが好ましい。この場合ｚは０．
０００５以上であることが好ましい。これら合金を、基
板上に設けられた第１保護層上に、たとえばスパッタリ
ングで膜付けし、記録層が形成される。In the recording layer of the phase change type optical recording medium, for example, a Te-Ge-Sb-Pd alloy or Te-Ge-Sb- is used.
Pd-Nb alloy, Nb-Ge-Sb-Te alloy, Pt-
Ge-Sb-Te alloy, Ni-Ge-Sb-Te alloy,
Ge-Sb-Te alloy, Co-Ge-Sb-Te alloy,
In-Sb-Te alloys, In-Se alloys, and alloys containing these as main components are used. Especially Te-Ge-
Sb-Pd alloys and Te-Ge-Sb-Pd-Nb alloys are preferable because they hardly deteriorate even after repeated recording / erasing and reproduction and have excellent thermal stability. A particularly desirable recording film composition is, for example, in the range represented by the following formula, from the viewpoint of excellent thermal stability and repetition stability. M z (Sb x Te (1-x) ) 1-yz (Ge 0.5 Te 0.5 ) y 0.35 ≦ x ≦ 0.5 0.20 ≦ y ≦ 0.5 0 ≦ z ≦ 0.05 where M Is at least one metal selected from palladium, niobium, platinum, silver, gold, and cobalt, Sb is antimony, Te is tellurium, and Ge is germanium. Also,
x, y, z and numerals represent the number of atoms of each element (the number of moles of each element). In particular, palladium and niobium preferably contain at least one kind. In this case, z is 0.
It is preferably at least 0005. These alloys are applied on the first protective layer provided on the substrate by, for example, sputtering to form a recording layer.
【００２２】第１保護層および第２保護層は、記録層を
機械的に保護するとともに、基板や記録層が記録による
熱によって変形したり記録消去再生特性が劣化したりす
るのを防止したり、記録層に耐湿熱性や耐酸化性を持た
せる役割を果たす。このような保護層としてはＺｎＳ、
ＳｉＯ2 、Ｔａ2 Ｏ5 、ＩＴＯ、ＺｒＣ、ＴｉＣ、Ｍｇ
Ｆ2 などの無機膜やそれらの混合膜が使用できる。とく
にＺｎＳとＳｉＯ2 およびＺｎＳとＭｇＦ2 の混合膜は
耐湿熱性に優れており、さらに記録消去再生時の記録層
の劣化を抑制するので好ましい。The first protective layer and the second protective layer mechanically protect the recording layer and prevent the substrate and the recording layer from being deformed by the heat generated by recording and from being deteriorated in the recording / erasing / reproducing characteristics. , Plays a role of providing the recording layer with moist heat resistance and oxidation resistance. ZnS,
SiO 2 , Ta 2 O 5 , ITO, ZrC, TiC, Mg
An inorganic film such as F 2 or a mixed film thereof can be used. In particular, a mixed film of ZnS and SiO 2 and a mixed film of ZnS and MgF 2 are excellent in moist heat resistance, and furthermore, are preferable because deterioration of the recording layer at the time of recording / erasing / reproduction is suppressed.
【００２３】反射層としては、金属または、金属酸化
物、金属窒化物、金属炭化物などと金属との混合物、た
とえばＺｒ、Ｈｒ、Ｔａ、Ｍｏ、Ｓｉ、Ａｌ、Ａｕ、Ｐ
ｄ、Ｈｆなどの金属やこれらの合金、これらとＺｒ酸化
物、Ｓｉ酸化物、Ｓｉ窒化物、Ａｌ酸化物などを混合し
たものを使用できる。特にＡｌ、Ａｕ、Ｔａやそれらの
合金やＡｌ、Ｈｆ、Ｐｄの合金などは膜の形成が容易で
あり好ましい。The reflective layer may be a metal or a mixture of a metal or a metal oxide, a metal nitride, a metal carbide, or the like, such as Zr, Hr, Ta, Mo, Si, Al, Au, P.
Metals such as d and Hf, alloys thereof, and mixtures thereof with Zr oxide, Si oxide, Si nitride, Al oxide, and the like can be used. In particular, Al, Au, Ta, alloys thereof, and alloys of Al, Hf, Pd and the like are preferable because the film can be easily formed.
【００２４】基板上に、第１保護層、記録層、第２保護
層、反射層を形成する方法としては、真空雰囲気中での
薄膜形成方法、たとえばスパッタリング法、真空蒸着
法、イオンプレーティング法などを用いることができ
る。特に組成、膜厚のコントロールが容易なことからス
パッタリング法が好ましい。As the method for forming the first protective layer, the recording layer, the second protective layer, and the reflective layer on the substrate, a thin film forming method in a vacuum atmosphere, for example, a sputtering method, a vacuum deposition method, an ion plating method. Etc. can be used. In particular, the sputtering method is preferable because the composition and the film thickness can be easily controlled.
【００２５】基板としては、基板側から記録再生を行う
ためにはレーザ光が良好に透過する材料を用いることが
好ましく、たとえばポリメチルメタアクリレート樹脂、
ポリカーボネート樹脂、ポリオレフィン樹脂、エポキシ
樹脂などの有機高分子樹脂、それらの混合物、共重合体
物などやガラスなどを用いることができる。中でも、昨
今はポリカーボネート樹脂が主流となっている。As the substrate, it is preferable to use a material through which laser light can be satisfactorily transmitted in order to perform recording and reproduction from the substrate side.
Organic polymer resins such as polycarbonate resin, polyolefin resin, and epoxy resin, mixtures thereof, copolymers, and glass can be used. Above all, recently, polycarbonate resins have become mainstream.
【００２６】基板は、円盤体に成形されるものである。
成形方法は特に限定しないが、たとえば射出成形による
ことができ、金型内に、表面に所定のグルーブやピット
雄型が形成されたスタンパを装着し、スタンパからの転
写により、表面に所望のトラックが形成された基板を形
成できる。The substrate is formed into a disc body.
The molding method is not particularly limited. For example, injection molding can be used. A stamper having a predetermined groove or pit male mold formed on the surface is mounted in a mold, and a desired track is formed on the surface by transfer from the stamper. Can be formed.
【００２７】基板の大きさは、光記録媒体ドライブ装置
からの要求規格に合わせる必要がある。たとえば、直径
８６ｍｍや１２０ｍｍあるいは１３０ｍｍの基板に成形
することなどが規定される。The size of the substrate must meet the standard required by the optical recording medium drive device. For example, it is prescribed that the substrate is formed into a substrate having a diameter of 86 mm, 120 mm, or 130 mm.
【００２８】このような基板上に、順に、少なくとも第
１保護層／記録層／第２保護層／反射層が積層される。
この反射層の上に、さらに有機樹脂保護層を設けてもよ
い。有機樹脂保護層としては、重合性モノマーおよびオ
リゴマーを主成分とする光硬化性樹脂組成物や、熱硬化
性樹脂組成物を用いることができる。また、同様なもの
を光の入射面側の基板上に、耐摩耗性、耐刷性向上など
の基板保護の目的や、ホコリ付着防止のための制電性付
与の目的で設けてもよい。On such a substrate, at least a first protective layer / a recording layer / a second protective layer / a reflective layer are sequentially laminated.
An organic resin protective layer may be further provided on the reflective layer. As the organic resin protective layer, a photocurable resin composition containing a polymerizable monomer or oligomer as a main component or a thermosetting resin composition can be used. Further, the same may be provided on the substrate on the light incident surface side for the purpose of protecting the substrate such as improving abrasion resistance and printing durability, and for the purpose of providing antistatic property for preventing dust adhesion.
【００２９】このように構成された相変化型光記録媒体
が初期化される。初期化は、専用の描画型初期化装置を
用い、図１に示すように、光記録媒体１の記録面２上
に、レンズ３によって焦点調整された所定パワーのレー
ザ光４が照射され、記録層を結晶化させることにより行
う。本実施態様においては、この初期化装置が、光記録
媒体製造ライン中に１台もしくは複数台並列に設置さ
れ、各初期化装置で各々流れてきた光記録媒体の初期化
が行われる。The phase change type optical recording medium having the above structure is initialized. For initialization, as shown in FIG. 1, a dedicated drawing type initialization device is used to irradiate a recording surface 2 of an optical recording medium 1 with a laser beam 4 of a predetermined power focused by a lens 3 for recording. This is done by crystallizing the layer. In the present embodiment, one or a plurality of the initialization devices are installed in parallel in the optical recording medium manufacturing line, and the initialization of the optical recording mediums respectively flown by the initialization devices is performed.
【００３０】上記初期化は、光記録媒体の記録特性上か
らは規定初期化領域のみに対して、つまりユーザ使用領
域とメーカ使用領域に対してのみ確実に行われることが
必要であったが、本発明では規定初期化領域外に対して
も行われる。From the recording characteristics of the optical recording medium, the above initialization must be surely performed only in the prescribed initialization area, that is, in the user use area and the manufacturer use area. In the present invention, it is also performed outside the specified initialization area.
【００３１】この規定初期化領域外での初期化において
は、たとえばレーザ光をパルス変調しながら照射する。
パルス変調により、結晶化の強さ、あるいは結晶化され
る部分とアモルファスの相のまま残される部分とが生じ
るので、レーザ光を照射した部位には、肉眼的に認識で
きるあるパターンが記録される。このパルス変調により
記録されるパターンが、初期化装置毎に異なるパターン
に設定される。また、レーザ光強度をたとえば正弦波状
にアナログ的に変調する場合であっても適当なパターン
を記録することができる。In the initialization outside the specified initialization area, for example, laser light is applied while being pulse-modulated.
The pulse modulation causes crystallization intensity, or a part to be crystallized and a part to be left as an amorphous phase, so that a visually recognizable pattern is recorded at the part irradiated with laser light. . The pattern recorded by this pulse modulation is set to a different pattern for each initialization device. Also, even when the laser light intensity is modulated in a sinusoidal manner in an analog manner, an appropriate pattern can be recorded.
【００３２】パターンとしては、たとえば図１に示すよ
うなバーコードパターン５、あるいは文字パターンある
いは、特定の図形パターンなど、光学的識別マークや肉
眼的に認識可能なパターンが考えられる。なお、相変化
型光記録媒体の場合、非初期化部位はアモルファス相、
初期化部位は結晶相が選ばれることが多い。また、パタ
ーン記録部位としては、規定初期化領域外であれば特に
限定されず、図１に示すような記録面の内周部位、ある
いは外周側の部位が使用できる。初期化工程以外では、
データ記録領域外であればどこでもよい。The pattern may be, for example, a bar code pattern 5 as shown in FIG. 1, a character pattern, or a specific graphic pattern such as an optical identification mark or a macroscopically recognizable pattern. In the case of a phase change type optical recording medium, the non-initialized portion is an amorphous phase,
The crystal phase is often selected as the initialization site. Further, the pattern recording portion is not particularly limited as long as it is outside the specified initialization area, and the inner peripheral portion of the recording surface as shown in FIG. 1 or the outer peripheral portion can be used. Other than the initialization process,
It may be anywhere outside the data recording area.
【００３３】光記録媒体の規定初期化領域外に、目視可
能な上記パターンが記録されることにより、後の工程や
製品化後に、光記録媒体の外観からその光記録媒体がど
の装置で初期化されたかなどの製造情報が、何ら特別な
検査、判別装置を用いることなく、容易に判別できるよ
うになる。By recording the above-mentioned visible pattern outside the specified initialization area of the optical recording medium, the optical recording medium is initialized in which device from the appearance of the optical recording medium after a later process or after commercialization. It becomes possible to easily discriminate the manufacturing information such as whether or not it is performed without using any special inspection and discrimination device.
【００３４】また、初期化工程のほか、メーカ使用領域
にデータを書き込む場合にそのデータ書込手段を用いて
上記と同様にパターンを記録してもよい。パターンが表
す情報としては、パターンが製造工程で記録される場合
は、初期化装置の番号やその時期、ロット番号、ディス
ク番号などの製造情報等が考えられる。In addition to the initialization process, when writing data in the area used by the manufacturer, the data writing means may be used to record the pattern in the same manner as described above. When the pattern is recorded in the manufacturing process, the information represented by the pattern may be manufacturing information such as the number of the initialization device, its timing, lot number, and disk number.
【００３５】また、パターンはユーザが記録してもよ
い。すなわち、光記録媒体のドライブ装置等に設けたパ
ターンの描画型書込手段や、通常のデータ書込手段を利
用してパターンを記録し、ユーザ独自の情報（ディスク
番号、データの内容を示す情報等）を記録してもよい。
この場合、とくに、パターンが肉眼的に認識可能なもの
であると、一種のラベルとして用いることができ、別途
インデックスラベル等を作製して貼付したりする手間が
省ける。The pattern may be recorded by the user. That is, the pattern is recorded by using a pattern writing type writing means provided in a drive device of an optical recording medium or the like, or a normal data writing means, and user-specific information (disc number, information indicating data content) Etc.) may be recorded.
In this case, in particular, if the pattern is recognizable with the naked eye, it can be used as a kind of label, and the trouble of separately preparing and attaching an index label or the like can be omitted.
【００３６】以上の本発明の光記録媒体の記録方法ある
いは製造方法を用いてパターンが記録された光記録媒体
は、媒体の製造プロセスの管理や、ユーザによる個別デ
ィスクの管理等を容易にする。The optical recording medium on which a pattern is recorded by using the recording method or the manufacturing method of the optical recording medium of the present invention described above facilitates the management of the manufacturing process of the medium and the management of individual disks by the user.
【００３７】[0037]
【発明の効果】以上説明したように、本発明の光記録媒
体、その記録方法、記録装置、製造方法および製造装置
によると、相変化型などの光記録媒体に、簡便に、か
つ、低コストで媒体の製造情報等の付加的情報を記録す
る方法およびかかる情報を記録した光記録媒体を実現
し、これによる製造工程の管理やユーザによる個別ディ
スクの管理を容易ならしめることができる。また、とく
に本発明の好ましい態様によれば、上記付加的情報を肉
眼で読み取ることができ、上記管理をさらに容易にする
ことができる。As described above, according to the optical recording medium, the recording method, the recording apparatus, the manufacturing method and the manufacturing apparatus of the present invention, the optical recording medium of phase change type can be easily and inexpensively manufactured. Thus, it is possible to realize a method of recording additional information such as manufacturing information of a medium and an optical recording medium having such information recorded, thereby facilitating management of a manufacturing process and management of individual disks by a user. Further, in particular, according to a preferable aspect of the present invention, the additional information can be read with the naked eye, and the management can be further facilitated.
【図１】初期化およびパターン記録の様子を示す概略構
成図である。FIG. 1 is a schematic configuration diagram showing a state of initialization and pattern recording.
１ 光記録媒体 ２ 記録面 ３ レンズ ４ レーザ光 ５ 記録されたパターン 1 optical recording medium 2 recording surface 3 lens 4 laser light 5 recorded pattern
Claims (11)
的に読取り可能なパターンが記録されてなることを特徴
とする光記録媒体。1. An optical recording medium, wherein an optically readable pattern is recorded in an area of the recording layer outside the data recording area.
または描画型書込手段により書き込まれたものであるこ
とを特徴とする請求項１の光記録媒体。2. The optical recording medium according to claim 1, wherein the pattern is written by a data writing unit or a writing type writing unit of the recording layer.
差異に基づいてデータが読み取られるべきものであるこ
とを特徴とする請求項１または２の光記録媒体。3. The optical recording medium according to claim 1, wherein data is to be read based on a difference in light reflectance of the recording layer.
のであることを特徴とする請求項１ないし３のいずれか
に記載の光記録媒体。4. The optical recording medium according to claim 1, wherein the pattern is visually recognizable.
の領域に光学的に読取り可能なパターンを記録すること
を特徴とする光記録方法。5. An optical recording method, wherein an optically readable pattern is recorded in a region outside a data recording region of a recording layer of an optical recording medium.
データ書込手段を有し、該データ書込手段は、光記録媒
体の記録層のデータ記録領域外の領域に光学的に読取り
可能なパターンをも書き込むものであることを特徴とす
る光記録装置。6. A data writing means for writing data to the recording layer of the optical recording medium, wherein the data writing means is optically readable in a region outside the data recording region of the recording layer of the optical recording medium. An optical recording device characterized in that a pattern is also written.
期化装置により初期化する初期化工程を有する光記録媒
体の製造方法において、光記録媒体の既定初期化領域外
に前記描画型初期化装置により初期化部位と非初期化部
位とからなるパターンを書き込むパターン書込工程を有
することを特徴とする光記録媒体の製造方法。7. A method of manufacturing an optical recording medium having an initialization step of initializing data of a recording layer of an optical recording medium by a drawing type initialization device, wherein the drawing type initial part is provided outside a default initialization area of the optical recording medium. A method of manufacturing an optical recording medium, comprising: a pattern writing step of writing a pattern including an initialized portion and a non-initialized portion by an oxidation device.
表すものであることを特徴とする請求項７の光記録媒体
の製造方法。8. The method of manufacturing an optical recording medium according to claim 7, wherein the pattern represents manufacturing information of the optical recording medium.
画型初期化装置により初期化する初期化工程を有する光
記録媒体の製造方法において、光記録媒体の既定初期化
領域外に前記描画型初期化装置により初期化部位と非初
期化部位とからなり前記各描画型初期化装置毎に異なる
パターンを書き込むパターン書込工程を有することを特
徴とする光記録媒体の製造方法。9. A method for manufacturing an optical recording medium having an initialization step of initializing data of a recording layer of the optical recording medium by a plurality of drawing type initialization devices, wherein the drawing is performed outside a default initialization area of the optical recording medium. A method of manufacturing an optical recording medium, comprising: a pattern writing step of writing a different pattern for each of the drawing type initialization devices, the pattern writing device comprising an initialization part and a non-initialization part by a mold initialization device.
文字パターンに設定される請求項７ないし９のいずれか
に記載の光記録媒体の製造方法。10. The method of manufacturing an optical recording medium according to claim 7, wherein the pattern is set to an optical identification symbol or a character pattern.
する複数の描画型初期化装置を備えてなる光記録媒体の
製造装置において、各描画型初期化装置は、光記録媒体
の既定初期化領域外に前記描画型初期化装置により初期
化部位と非初期化部位とからなり前記各描画型初期化装
置毎に異なるパターンを書き込むものであることを特徴
とする光記録媒体の製造装置。11. An optical recording medium manufacturing apparatus comprising a plurality of drawing type initialization devices for initializing data of a recording layer of an optical recording medium, wherein each drawing type initialization device is a default initial stage of the optical recording medium. An apparatus for manufacturing an optical recording medium, characterized in that a pattern, which is composed of an initialized part and a non-initialized part, is written outside the charge region by the drawing type initialization device and is different for each drawing type initialization device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7248550A JPH0973666A (en) | 1995-09-01 | 1995-09-01 | Optical recording medium and its production and apparatus for production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7248550A JPH0973666A (en) | 1995-09-01 | 1995-09-01 | Optical recording medium and its production and apparatus for production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0973666A true JPH0973666A (en) | 1997-03-18 |
Family
ID=17179847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7248550A Pending JPH0973666A (en) | 1995-09-01 | 1995-09-01 | Optical recording medium and its production and apparatus for production |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0973666A (en) |
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