JPH10312582A - Initialization system for optical information record carrier - Google Patents
Initialization system for optical information record carrierInfo
- Publication number
- JPH10312582A JPH10312582A JP12197097A JP12197097A JPH10312582A JP H10312582 A JPH10312582 A JP H10312582A JP 12197097 A JP12197097 A JP 12197097A JP 12197097 A JP12197097 A JP 12197097A JP H10312582 A JPH10312582 A JP H10312582A
- Authority
- JP
- Japan
- Prior art keywords
- semiconductor laser
- optical
- recording film
- light beam
- disc
- 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】本発明は相変化型記録膜等の
記録および消去可能な記録面を有する円盤状光学的記録
情報担体の製造工程における初期化処理、すなわち円盤
状光学的記録情報担体の記録膜状態をアモルファス状態
から結晶状態に遷移させて、記録膜の反射率を上昇させ
る処理を行う初期化装置に利用する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an initialization process in a manufacturing process of a disc-shaped optical record information carrier having a recordable and erasable recording surface such as a phase-change type recording film, that is, a disc-shaped optical record information carrier. The present invention is used for an initialization apparatus that performs a process of changing the recording film state from an amorphous state to a crystalline state to increase the reflectance of the recording film.
【０００２】[0002]
【従来の技術】近年、高密度、大容量で寿命特性に優れ
る円盤状光学的記録情報担体を用いた情報記録装置が注
目され、各種の製品化提案が数多くなされている。2. Description of the Related Art In recent years, an information recording apparatus using a disc-shaped optically recorded information carrier having a high density, a large capacity, and excellent life characteristics has attracted attention, and various commercialization proposals have been made.
【０００３】以下に、このような装置に用いられる円盤
状光学的記録情報担体について図面を用いて説明する。Hereinafter, a disc-shaped optically recorded information carrier used in such an apparatus will be described with reference to the drawings.
【０００４】図６は円盤状光学的記録情報担体（以下光
ディスクと称す）の概略構造図であり、相変化記録膜を
有する消去可能な光ディスク１は同図に示すように、光
ディスク１上にアドレス部１Ｄと案内溝部１Ｅを有して
いる。FIG. 6 is a schematic structural view of a disc-shaped optically recorded information carrier (hereinafter, referred to as an optical disk). As shown in FIG. 6, an erasable optical disk 1 having a phase-change recording film has an address on the optical disk 1. It has a portion 1D and a guide groove 1E.
【０００５】このような光ディスク１の初期化を行う従
来の初期化装置について図５を用いて説明する。A conventional initialization apparatus for initializing the optical disk 1 will be described with reference to FIG.
【０００６】光ディスク１はターンテーブルモータ２に
保持され、ターンテーブルモータ２やターンテーブルモ
ータ制御回路３の駆動手段によって一定線速度制御（Ｃ
ＬＶ）で回転している。The optical disk 1 is held by a turntable motor 2 and is driven at a constant linear velocity (C) by driving means of the turntable motor 2 and the turntable motor control circuit 3.
LV).
【０００７】光ピックアップ７０は半導体レーザ４０、
コリメータレンズ５、対物レンズ６等から構成され、半
導体レーザ４０からの出射光ビームｄ１はコリメータレ
ンズ５、偏光特性を有するミラー１５、対物レンズ６を
経て光ビームｄ２として光ディスク１上の記録膜面Ａ上
に集束照射される。この時の記録膜面Ａ上の光ビーム形
状は初期化工程の作業能率を高める為に、図７に示すよ
うに光ディスク１の径方向に拡がった楕円形状をしてお
り、その大きさは約５０＊１μｍ程度である。半導体レ
ーザ４０は約１Ｗのエネルギーを持つ光ビームｄ１を出
射し、半導体レーザ４０の発光幅は接合面に対して垂直
方向と水平方向で大きく異なり、その大きさは垂直方向
で約１〜２μｍ、水平方向は約１００μｍで、光ビーム
ｄ１の放射角も垂直方向で約１０度、水平方向で約３０
度となる。The optical pickup 70 includes a semiconductor laser 40,
The light beam d1 emitted from the semiconductor laser 40 is composed of a collimator lens 5, an objective lens 6, and the like. Focused irradiation is performed on the top. At this time, the shape of the light beam on the recording film surface A has an elliptical shape that expands in the radial direction of the optical disc 1 as shown in FIG. It is about 50 * 1 μm. The semiconductor laser 40 emits a light beam d1 having an energy of about 1 W. The light emission width of the semiconductor laser 40 is largely different from the vertical direction and the horizontal direction with respect to the bonding surface. The horizontal direction is about 100 μm, the emission angle of the light beam d1 is about 10 degrees in the vertical direction, and about 30 degrees in the horizontal direction.
Degree.
【０００８】この為に半導体レーザ４０の接合面が光デ
ィスクの半径方向に投影される様に光ピックアップ内で
設置し、図７に示すような楕円のビーム形状を実現して
いる。For this purpose, the semiconductor laser 40 is installed in the optical pickup so that the bonding surface is projected in the radial direction of the optical disk, thereby realizing an elliptical beam shape as shown in FIG.
【０００９】光ディスク１の傾きや光ディスク１の記録
膜面Ａの面振れ、歪みによって、光ディスク１上の記録
膜面Ａが上下変動し、対物レンズ６と記録膜面Ａ間の距
離が変化し、常に記録膜面Ａ上に光ビームｄ２が集束照
射できなくなる。このため光ビームの自動焦点制御が必
要となる。The recording film surface A on the optical disk 1 fluctuates up and down due to the tilt of the optical disk 1 and the runout and distortion of the recording film surface A of the optical disk 1, and the distance between the objective lens 6 and the recording film surface A changes. The light beam d2 cannot always be focused on the recording film surface A. Therefore, automatic focus control of the light beam is required.
【００１０】本例では別の光源を用いて、上記自動焦点
制御を実現している。図５においてＨｅ−Ｎｅレーザ１
１からの出射光ビームｃ１はレンズ１２、偏光ビームス
プリッター１３、λ／４板１４、ミラ−１５、対物レン
ズ６を経て記録膜面Ａに入射する。記録膜面Ａからの反
射光ビームｃ２はミラー１５、λ／４板１４、偏光ビー
ムスプリッター１３を経て２分割光ディテクター１６に
入射する。この時のミラー１５は光ビームｃ２は透過す
るが、Ｈｅ−Ｎｅレーザ１１からの出射光ビームｃ１は
反射する特性を持っている。光ディスク１の記録膜面Ａ
の上下変動に伴い、光ビームｃ２は２分割光ディテクタ
ー１６上で図８の矢印の方向に動く。In this embodiment, the above-mentioned automatic focus control is realized by using another light source. In FIG. 5, the He-Ne laser 1
The output light beam c1 from 1 enters the recording film surface A via the lens 12, the polarizing beam splitter 13, the λ / 4 plate 14, the mirror 15, and the objective lens 6. The reflected light beam c2 from the recording film surface A passes through the mirror 15, the λ / 4 plate 14, and the polarization beam splitter 13 and is incident on the two-divided light detector 16. At this time, the mirror 15 has such a characteristic that the light beam c2 is transmitted, but the light beam c1 emitted from the He-Ne laser 11 is reflected. Recording film surface A of optical disk 1
The light beam c2 moves in the direction of the arrow in FIG.
【００１１】２分割光ディテクター１６の出力は差動ア
ンプ１７、フォーカス制御回路１８を通じてフォーカス
制御用のリニアモータ１９を駆動し、対物レンズ６を上
下に移動させることで、常に出射光ビームｄ１が光ディ
スク１の記録膜面Ａに集束照射できるように制御する。The output of the two-segment optical detector 16 drives a linear motor 19 for focus control through a differential amplifier 17 and a focus control circuit 18 to move the objective lens 6 up and down, so that the output light beam d1 is always on the optical disk. Control is performed so that focused irradiation can be performed on one recording film surface A.
【００１２】光ディスク１へ集束照射される光ビームｄ
２の径方向位置Ｒはリニアースケール８で測定され、リ
ニアースケール８の出力はターンテーブルモータ制御回
路３に入力され、光ビームｄ２の照射位置Ｒに応じてＣ
ＬＶ制御される。また同時に光ピックアップ７０は光ピ
ックアップ移動装置１０によってターンテーブルモータ
８の回転数と連動し径方向への移動する。更に半導体レ
ーザ制御回路９の出力は半導体レーザ４０に加えられ、
光ビームｄ１の強度を一定に保つように制御する。これ
らの動作によって光ディスク１の記録膜上に常に最適な
初期化条件を実現できるよう一定線速度で一定強度の光
ビームｄ２が照射され、この照射ビームエネルギーによ
り膜温度が結晶化温度以上に上昇し、記録膜の状態がア
モルファスから結晶状態に遷移する。A light beam d focused and irradiated on the optical disk 1
2 is measured by the linear scale 8, and the output of the linear scale 8 is input to the turntable motor control circuit 3.
LV control is performed. At the same time, the optical pickup 70 is moved in the radial direction by the optical pickup moving device 10 in conjunction with the rotation speed of the turntable motor 8. Further, the output of the semiconductor laser control circuit 9 is applied to the semiconductor laser 40,
Control is performed to keep the intensity of the light beam d1 constant. By these operations, the recording film of the optical disk 1 is irradiated with the light beam d2 having a constant intensity at a constant linear velocity so as to always realize the optimum initialization condition. Then, the state of the recording film changes from an amorphous state to a crystalline state.
【００１３】[0013]
【発明が解決しようとする課題】しかしながら従来の初
期化装置では、使用する高出力半導体レーザ４０のビー
ム強度分布が図９に示すように約±２０％の変動を持つ
為に、光ディスク１上に照射される光ビームｄ２のビー
ム強度も同様の強度分布を持つ。光ディスク１上の記録
膜１Ｂは光ビームｄ２の照射エネルギーによって、アモ
ルファスから結晶化状態に遷移するが、受ける光ビーム
ｄ２の照射エネルギー強度によって結晶化の度合いが異
なる、あるいは、照射エネルギー強度の特に高い部分で
は結晶状態を越え、溶融しその後の急激な冷却によりア
モルファス状態になる。この為に図９に示すような強度
分布を持つ光ビームを受けると初期化される記録膜は部
分的に筋状の膜反射率変化を生じる。However, in the conventional initialization apparatus, the beam intensity distribution of the high-power semiconductor laser 40 used has a fluctuation of about ± 20% as shown in FIG. The beam intensity of the irradiated light beam d2 has a similar intensity distribution. The recording film 1B on the optical disk 1 changes from an amorphous state to a crystallized state by the irradiation energy of the light beam d2, but the degree of crystallization varies depending on the irradiation energy intensity of the received light beam d2, or the irradiation energy intensity is particularly high. The portion exceeds the crystalline state, melts, and becomes amorphous by rapid cooling. For this reason, when a light beam having an intensity distribution as shown in FIG. 9 is received, the recording film which is initialized has a partially streak-like film reflectance change.
【００１４】この様な膜反射率変化が生じると、この光
ディスク１を使用する記録再生装置で、光ディスク１の
案内溝を追従を行うトラッキングサーボに悪影響を与
え、トラッキングはずれ等を生じる。When such a change in film reflectivity occurs, a recording / reproducing apparatus using the optical disc 1 adversely affects a tracking servo that follows a guide groove of the optical disc 1 and causes a tracking error or the like.
【００１５】本発明はこの様な従来の初期化装置が所有
する課題を解決するための手段を提供し、安定な初期化
を行い、高品質の光ディスクを生産することを目的とす
る。An object of the present invention is to provide a means for solving the problems possessed by such a conventional initialization apparatus, perform stable initialization, and produce a high-quality optical disk.
【００１６】[0016]
【課題を解決するための手段】本発明においては上記の
課題を解決するために、光ピックアップ内に設置する半
導体レーザの方向を従来例に対して、９０°回転した状
態、すなわち半導体レーザ４の接合面が光ディスク１の
接線方向に投影される様に取り付け、光ディスク１の記
録膜面Ａ上で半導体レーザ４が持つ発光強度分布の影響
が生じないようにしたものである。According to the present invention, in order to solve the above-mentioned problems, the direction of the semiconductor laser installed in the optical pickup is rotated by 90 ° with respect to the conventional example, that is, the semiconductor laser 4 is rotated. The optical disk 1 is mounted so that the bonding surface is projected in the tangential direction of the optical disk 1 so that the emission intensity distribution of the semiconductor laser 4 on the recording film surface A of the optical disk 1 is not affected.
【００１７】[0017]
【発明の実施の形態】本発明の請求項１に記載の発明
は、スパイラルもしくは同心円状のトラックを有する円
盤状光学記録担体を所定の回転数で回転させる手段と、
少なくとも半導体レーザと対物レンズからなり、前記円
盤状光学記録担体上の記録膜に前記半導体レーザからの
出射光ビームを集光照射する光ピックアップと、前記光
ピックアップを前記円盤状光学記録担体の径方向に移動
させる移動装置と、前記半導体レーザから出射する光ビ
ームの強度を一定に制御する半導体レーザ制御装置から
構成させる初期化装置であって、前記半導体レーザは初
期化を行う為の放射線源であり、且つ前記半導体レーザ
の接合面が円盤状光学記録担体のトラックの接線方向に
位置する様に構成された光ピックアップを持つものであ
り、発光強度分布が光ディスクの記録膜に影響しない様
にできるばかりでなく、接線方向に長い光ビームによっ
て、記録膜の加熱・冷却時間が長くとれることで、記録
膜にダメージを起こしにくくする様な初期化処理が行え
るという作用を有する。The invention according to claim 1 of the present invention comprises means for rotating a disc-shaped optical record carrier having a spiral or concentric track at a predetermined rotation speed,
An optical pickup comprising at least a semiconductor laser and an objective lens and converging and irradiating a light beam emitted from the semiconductor laser onto a recording film on the disc-shaped optical record carrier; and providing the optical pickup in a radial direction of the disc-shaped optical record carrier. And a semiconductor laser control device for controlling the intensity of the light beam emitted from the semiconductor laser to be constant, wherein the semiconductor laser is a radiation source for performing initialization. And an optical pickup configured such that a bonding surface of the semiconductor laser is located in a tangential direction of a track of the disc-shaped optical record carrier, so that the emission intensity distribution can be prevented from affecting the recording film of the optical disc. Instead, the light beam that is long in the tangential direction can lengthen the time for heating and cooling the recording film, causing damage to the recording film. It has the effect that the initialization process, such as less likely to be performed.
【００１８】請求項２に記載の発明は、光ピックアップ
内に複数個の半導体レーザを配置し、且つ前記各半導体
レーザの接合面が円盤状光学記録担体のトラック方向の
接線方向に位置する様に構成された光ピックアップを持
つものであり、請求項１の作用に加え、より広い範囲を
安定に初期化する事ができるという作用を有する。According to a second aspect of the present invention, a plurality of semiconductor lasers are arranged in an optical pickup, and a bonding surface of each of the semiconductor lasers is positioned in a tangential direction in a track direction of the disc-shaped optical record carrier. The optical pickup having the structure described above has an effect that, in addition to the effect of the first aspect, it is possible to stably initialize a wider range.
【００１９】以下、本発明の実施例について図面に基づ
いて説明する。図１は実施例１における初期化装置の構
成図を示し、従来例と同一構成要素については同一番号
を用い説明を省略する。Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing the configuration of an initialization apparatus according to the first embodiment, and the same components as those in the conventional example are denoted by the same reference numerals and description thereof is omitted.
【００２０】実施例１では従来例と異なり、半導体レー
ザ４の接合面が光ディスク１の接線方向すなわちトラッ
ク方向に投影される様に光ピックアップ７内で設置され
る。半導体レーザ４から出射光ビームａ１はレンズ５、
ミラー１５、対物レンズ６を経て光ビームａ２として光
ディスク１上の記録膜面Ａ上に集束照射される。この時
の記録膜面Ａ上のビーム形状は図２に示す様に光ディス
ク１の接線方向に拡がった楕円形状をしており、光ビー
ム強度分布が光ディスク１の案内溝方向、すなわち接線
方向になる様に配置する。更に径方向に光ビーム形状を
広げる為に、自動焦点制御ループ内の加算回路２０にオ
フセット電圧Ｖｆを加え、光ディスク１の記録膜面Ａ上
で一定の焦点ずれを起こす様にする。In the first embodiment, unlike the conventional example, the semiconductor laser 4 is installed in the optical pickup 7 so that the bonding surface of the semiconductor laser 4 is projected in the tangential direction of the optical disk 1, that is, in the track direction. The light beam a1 emitted from the semiconductor laser 4 is
The light is focused and irradiated on the recording film surface A on the optical disc 1 as a light beam a2 via the mirror 15 and the objective lens 6. At this time, the beam shape on the recording film surface A has an elliptical shape expanding in the tangential direction of the optical disk 1 as shown in FIG. 2, and the light beam intensity distribution is in the guide groove direction of the optical disk 1, that is, in the tangential direction. Place it in the same way. In order to further expand the light beam shape in the radial direction, an offset voltage Vf is applied to the addition circuit 20 in the automatic focus control loop so that a constant defocus occurs on the recording film surface A of the optical disk 1.
【００２１】この焦点ずれにより、記録膜面Ａに照射さ
れる光ビーム形状は幅と接線方向長さの関係が約５＊１
００μｍ程度となる。Due to this defocus, the shape of the light beam irradiated on the recording film surface A has a relationship between the width and the tangential length of about 5 * 1.
It is about 00 μm.
【００２２】実施例１では図２の（ａ）に示すように記
録膜面Ａ上のビーム形状は接線方向に拡がった楕円形状
を及び、図２の（ｂ）に示すように接線方向に対して幾
分傾いている場合も有効である。この傾きは楕円スポッ
トの長径と短径の関係で許容量が決められ、θ＝ｔａｎ
（短径／長径）程度までが良好な範囲であり、その角度
が大きくなるに従い従来例との差が無くなるため左記に
述べた課題が発生しやすくなる。In the first embodiment, as shown in FIG. 2A, the beam shape on the recording film surface A has an elliptical shape expanding in the tangential direction, and as shown in FIG. It is also effective if it is slightly inclined. The allowable amount of this inclination is determined by the relationship between the major axis and minor axis of the elliptical spot, and θ = tan
(Short diameter / long diameter) is a good range, and the larger the angle is, the smaller the difference from the conventional example is, so that the problem described on the left tends to occur.
【００２３】更に、図３に示す様に、実施例２では光ピ
ックアップ７’内に第二の半導体レーザ２１、レンズ２
２と対物レンズ６に光ビームａ１’とｂ１を導くプリズ
ム２３を設け、図３に示す様に、幅と接戦方向長さの関
係が約５＊１００μｍ程度のものを略半径方向に複数個
並べた光ビームを記録膜面Ａ上に照射する。この時、光
ビームａ２’とｂ２の位置関係は径方向に重ならないよ
うに配置されている。Further, as shown in FIG. 3, in the second embodiment, the second semiconductor laser 21 and the lens 2 are provided in the optical pickup 7 '.
2 and the objective lens 6 are provided with a prism 23 for guiding the light beams a1 'and b1. As shown in FIG. 3, a plurality of prisms having a relationship between the width and the length in the tangential direction of about 5 * 100 μm are arranged in a substantially radial direction. The recording light is irradiated onto the recording film surface A. At this time, the light beams a2 'and b2 are arranged so that the positional relationship does not overlap in the radial direction.
【００２４】また第二の半導体レーザ制御回路２４の出
力は第二の半導体レーザ２１加えられ、光ビームｂ１の
強度を一定に保つように制御する。The output of the second semiconductor laser control circuit 24 is applied to a second semiconductor laser 21 to control the intensity of the light beam b1 to be kept constant.
【００２５】これにより径方向のビーム幅が増大し、１
回転あたりのイニシャライズ幅が増大し、安定な初期化
と共に初期化スピードを向上することができるものであ
る。As a result, the beam width in the radial direction increases,
The initialization width per rotation is increased, and the initialization speed can be improved together with the stable initialization.
【００２６】なお上記の実施例では、光ディスクを初期
化する装置について述べたが、同様の構成を有する光カ
ードや光テープ等のトラック方向を本発明の接線方向と
して応用することは本発明の範囲であり、接線方向に特
定の範囲内で傾けて実施することも本発明の範囲であ
る。In the above embodiment, an apparatus for initializing an optical disk has been described. However, it is within the scope of the present invention to apply the track direction of an optical card or an optical tape having the same configuration as the tangential direction of the present invention. It is also within the scope of the present invention to implement the present invention in a manner that the tangential direction is inclined within a specific range.
【００２７】[0027]
【発明の効果】以上の様に、本発明は簡単な構成で初期
化装置に使用する高出力の半導体レーザが持つ発光強度
分布が光ディスク１の記録膜Ａに影響しない様にできる
ばかりでなく、接線方向に長い光ビームによって、従来
とくらべて記録膜の加熱・冷却時間が長くとれること
で、記録膜にダメージを起こしにくくする様な高品質記
録膜を実現する初期化処理が行えるものである。As described above, the present invention can not only prevent the light emission intensity distribution of the high-power semiconductor laser used for the initialization device from affecting the recording film A of the optical disk 1 with a simple configuration, By using a light beam that is long in the tangential direction, it is possible to perform initialization processing for realizing a high-quality recording film that hardly causes damage to the recording film by increasing the time for heating and cooling the recording film compared to the conventional method. .
【図１】本発明の実施例１の初期化装置の構成図FIG. 1 is a configuration diagram of an initialization device according to a first embodiment of the present invention.
【図２】本発明の実施例１における光ディスクの記録膜
面上の光ビーム形状図FIG. 2 is a diagram of a light beam shape on a recording film surface of an optical disc in Embodiment 1 of the present invention.
【図３】本発明の実施例２の初期化装置の構成図FIG. 3 is a configuration diagram of an initialization device according to a second embodiment of the present invention;
【図４】本発明の実施例２における光ディスクの記録膜
面上の光ビーム形状図FIG. 4 is a diagram of a light beam shape on a recording film surface of an optical disc in Embodiment 2 of the present invention.
【図５】従来例の初期化装置の構成図FIG. 5 is a configuration diagram of a conventional initialization device.
【図６】光ディスク１の概略構成図FIG. 6 is a schematic configuration diagram of an optical disc 1;
【図７】従来例における光ディスクの記録膜面上の光ビ
ーム形状図FIG. 7 is a diagram of a light beam shape on a recording film surface of an optical disc in a conventional example.
【図８】従来例における光ディテクター上での光ビーム
３ａの動き模式図FIG. 8 is a schematic diagram showing the movement of a light beam 3a on a light detector in a conventional example.
【図９】半導体レーザのビーム強度分布図FIG. 9 is a beam intensity distribution diagram of a semiconductor laser.
１ 光ディスク ２ ターンテーブルモータ ３ ターンテーブルモータ制御回路 ４，２１ 半導体レーザ ５，２２ コリメータレンズ ６ 対物レンズ ７ 光ピックアップ ８ リニアスケール ９，２４ 半導体レーザ制御回路 １０ 光ピックアップ移動装置 １１ ＨｅーＮｅレーザ １２ レンズ １３ 偏光ビームスプリッター １４ λ／４板 １５ ミラー １６ ２分割光ディテクター １７ 差動アンプ １８ フォーカス制御回路 １９ リニアモータ ２０ 加算回路 ２３ プリズム Reference Signs List 1 optical disk 2 turntable motor 3 turntable motor control circuit 4, 21 semiconductor laser 5, 22 collimator lens 6 objective lens 7 optical pickup 8 linear scale 9, 24 semiconductor laser control circuit 10 optical pickup moving device 11 He-Ne laser 12 lens DESCRIPTION OF SYMBOLS 13 Polarization beam splitter 14 λ / 4 plate 15 Mirror 16 2 split optical detector 17 Differential amplifier 18 Focus control circuit 19 Linear motor 20 Addition circuit 23 Prism
Claims (2)
有する円盤状光学記録担体を所定の回転数で回転させる
手段と、少なくとも半導体レーザと対物レンズからな
り、前記円盤状光学記録担体上の記録膜に前記半導体レ
ーザからの出射光ビームを集光照射する光ピックアップ
と、前記光ピックアップを前記円盤状光学記録担体の径
方向に移動させる移動装置と、前記半導体レーザから出
射する光ビームの強度を一定に制御する半導体レーザ制
御装置から構成させる初期化装置であって、前記半導体
レーザは初期化を行う為の放射線源であり、且つ前記半
導体レーザの接合面が円盤状光学記録担体のトラックの
接線方向に位置する様に構成された光ピックアップを持
つことを特徴とする光学的情報記録担体の初期化装置。1. A means for rotating a disc-shaped optical record carrier having a spiral or concentric track at a predetermined number of revolutions, and at least a semiconductor laser and an objective lens, wherein a recording film on the disc-shaped optical record carrier has An optical pickup for condensing and irradiating an emitted light beam from a semiconductor laser, a moving device for moving the optical pickup in a radial direction of the disc-shaped optical record carrier, and controlling the intensity of the light beam emitted from the semiconductor laser to be constant An initialization device comprising a semiconductor laser control device, wherein the semiconductor laser is a radiation source for performing initialization, and a bonding surface of the semiconductor laser is positioned in a tangential direction of a track of the disc-shaped optical record carrier. An apparatus for initializing an optical information recording carrier, comprising: an optical pickup configured to perform the above operation.
ーザを配置し、且つ前記各半導体レーザの接合面が円盤
状光学記録担体のトラック方向の接線方向に位置する様
に構成された光ピックアップを持つことを特徴とする請
求項１記載の光学的情報記録担体の初期化装置。2. An optical pickup comprising: a plurality of semiconductor lasers disposed in the optical pickup; and a joining surface of each of the semiconductor lasers is positioned in a tangential direction of a track direction of the disc-shaped optical record carrier. 2. The apparatus for initializing an optical information recording carrier according to claim 1, wherein the apparatus comprises:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12197097A JPH10312582A (en) | 1997-05-13 | 1997-05-13 | Initialization system for optical information record carrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12197097A JPH10312582A (en) | 1997-05-13 | 1997-05-13 | Initialization system for optical information record carrier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10312582A true JPH10312582A (en) | 1998-11-24 |
Family
ID=14824383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12197097A Pending JPH10312582A (en) | 1997-05-13 | 1997-05-13 | Initialization system for optical information record carrier |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10312582A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1014353A2 (en) * | 1998-12-24 | 2000-06-28 | Ricoh Company | Initialization of phase-change optical recording medium |
| US7482109B2 (en) | 2001-02-01 | 2009-01-27 | Ricoh Company, Ltd. | Optical information recording medium |
-
1997
- 1997-05-13 JP JP12197097A patent/JPH10312582A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1014353A2 (en) * | 1998-12-24 | 2000-06-28 | Ricoh Company | Initialization of phase-change optical recording medium |
| EP1014353A3 (en) * | 1998-12-24 | 2001-08-29 | Ricoh Company | Initialization of phase-change optical recording medium |
| US6445669B1 (en) | 1998-12-24 | 2002-09-03 | Ricoh Company, Ltd. | Initialization of phase-change optical recording medium |
| USRE39901E1 (en) | 1998-12-24 | 2007-10-30 | Ricoh Company, Ltd. | Initialization of phase-change optical recording medium |
| US7482109B2 (en) | 2001-02-01 | 2009-01-27 | Ricoh Company, Ltd. | Optical information recording medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS6126137B2 (en) | ||
| JPH10312582A (en) | Initialization system for optical information record carrier | |
| JP2768418B2 (en) | Optical information recording / reproducing device | |
| JPS5920168B2 (en) | optical recording/playback device | |
| JPH0816987B2 (en) | Optical recording / reproducing device | |
| JP4014942B2 (en) | Optical information recording medium, method for manufacturing the same, and initialization apparatus | |
| JP2795571B2 (en) | Optical disk drive | |
| JP2000030290A (en) | Optical head device and recording/reproducing device of optical disk | |
| JP2850506B2 (en) | Optical disk initialization device | |
| US4863228A (en) | Apparatus and a method of deflecting laser convergent light | |
| JP2737379B2 (en) | Initialization device for rewritable optical disk | |
| JPS61139950A (en) | Optical head | |
| JP2003022538A (en) | Initializing device and initializing method for optical recording medium | |
| JPH11161957A (en) | Initializing method for information record medium and device therefor | |
| JP2608544B2 (en) | Optical information recording device | |
| JP3886634B2 (en) | Method and apparatus for initializing information recording medium | |
| JPH1064114A (en) | Optical recording medium reproducing device | |
| JPH11219536A (en) | Information recording medium initializing device | |
| JP2746696B2 (en) | Optical head device | |
| JPS63282930A (en) | Information processor | |
| JPH11345427A (en) | Optical head and optical information recording/ reproducing device using the same | |
| JPH02183430A (en) | Optical head | |
| JPH03250435A (en) | Optical head | |
| JP2002334473A (en) | Optical disk device | |
| JPH064867A (en) | Method for recording optical information and device for recording and reproducing optical information |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A02 | Decision of refusal |
Effective date: 20031216 Free format text: JAPANESE INTERMEDIATE CODE: A02 |