JP2005032402A - Recording/reproducing apparatus and disk cartridge - Google Patents

Recording/reproducing apparatus and disk cartridge Download PDF

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JP2005032402A
JP2005032402A JP2003416594A JP2003416594A JP2005032402A JP 2005032402 A JP2005032402 A JP 2005032402A JP 2003416594 A JP2003416594 A JP 2003416594A JP 2003416594 A JP2003416594 A JP 2003416594A JP 2005032402 A JP2005032402 A JP 2005032402A
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disk
recording
stabilizing member
main
reproducing
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Yasutomo Aman
康知 阿萬
Shiyouzou Murata
省蔵 村田
Nobuaki Onaki
伸晃 小名木
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Ricoh Co Ltd
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Ricoh Co Ltd
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Priority to US10/761,462 priority patent/US7194750B2/en
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Priority to US11/646,300 priority patent/US7546614B2/en
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Abstract

<P>PROBLEM TO BE SOLVED: To realize a good disk surface wobbling reducing effect in a recording/reproducing position in a disk radial direction by simply controlling a main/sub stabilizing member for providing Beronoulli effect when a flexible optical disk is rotated, and to facilitate the position adjustment of an optical pickup with respect to the recording/reproducing position accompanied by the control. <P>SOLUTION: A main stabilizing member 5 for providing Bernoulli effect on a flexible optical disk 1 is extended while opposing the scanning flow line R of the optical pickup, and an auxiliary stabilizing member 6 is set close to the scanning flow line R of the optical pickup to generate an operation force against the main stabilizing member 5 and arranged in one area S2 of two areas S1 and S2 into which the in-surface of the optical dick is divided by a straight line A passed through the center of the optical disk 1. Thus, the surface wobbling reduction areas can be formed at a time in a linear region on an optical disk radius. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、可撓性を有する記録ディスクに対して記録および/または再生処理を行う記録/再生装置、およびその記録ディスクを収納するディスクカートリッジに関するものである。   The present invention relates to a recording / reproducing apparatus that performs recording and / or reproducing processing on a flexible recording disk, and a disk cartridge that stores the recording disk.

近年、テレビ放送のデジタル化が始まるなど、大容量のデジタルデータを記録することが情報記録媒体に求められている。例えば、光ディスクの分野においては、記録/再生のために光ディスクに集光される光スポット径を小さくすることが、高密度化のための基本的な方法の一つに挙げられる(以下、光ディスクを代表として説明するが、本発明が対象とする記録/再生装置に用いられる記録ディスクは、相変化メモリ,光磁気メモリ,ホログラムメモリなどのディスク状の記録ディスクで活用するものすべてを対象にし、特に光ディスクに限定するものではない)。   In recent years, there has been a demand for information recording media to record large volumes of digital data, such as the start of digitization of television broadcasting. For example, in the field of optical discs, one of the basic methods for increasing the density is to reduce the diameter of the light spot collected on the optical disc for recording / reproduction (hereinafter referred to as an optical disc). As a representative example, the recording disk used in the recording / reproducing apparatus targeted by the present invention is intended for all the disk-shaped recording disks such as phase change memory, magneto-optical memory, hologram memory, etc. Not limited to optical discs).

このため、光ディスクの高密度化においては、記録/再生のために用いられる光の波長を短く、かつ対物レンズの開口数NAを大きくすることが有効である。光の波長についてはCD(compact disk)では近赤外光の780nm、DVD(digital versatile disk)では赤色光の650nm近傍の波長が用いられている。最近、青紫光の半導体レーザが開発され、今後は400nm近傍のレーザ光が使用されると予想される。   For this reason, in increasing the density of the optical disk, it is effective to shorten the wavelength of light used for recording / reproduction and increase the numerical aperture NA of the objective lens. As for the wavelength of light, a wavelength of near infrared light of 780 nm is used for CD (compact disk), and a wavelength of about 650 nm of red light is used for DVD (digital versatile disk). Recently, a blue-violet semiconductor laser has been developed, and it is expected that a laser beam of around 400 nm will be used in the future.

また、対物レンズについては、CD用はNA0.5未満であったが、DVD用はNA0.6程度である。今後、さらに開口数(NA)を大きくしてNA0.7以上とすることが求められる。しかし、対物レンズのNAを大きくすること、および光の波長を短くすることは、光を絞るときに収差の影響が大きくなることでもある。したがって、光ディスクのチルトに対するマージンが減ることになる。また、NAを大きくすることによって焦点深度が小さくなるため、フォーカスサーボ精度を上げなくてはならない。   As for the objective lens, it was less than NA0.5 for CD, but it is about NA0.6 for DVD. In the future, it is required to further increase the numerical aperture (NA) to NA or more 0.7. However, increasing the NA of the objective lens and shortening the wavelength of light also increase the influence of aberrations when focusing light. Therefore, the margin for the tilt of the optical disk is reduced. Further, since the depth of focus is reduced by increasing the NA, the focus servo accuracy must be increased.

さらに、高NAの対物レンズを使用することによって、対物レンズと光ディスクの記録面との距離が小さくなってしまうため、光ディスクの面ぶれを小さくしておかないと、始動時のフォーカスサーボを引き込む直前、対物レンズと光ディスクとが衝突することがあり、ピックアップの故障の原因となる。   Furthermore, since the distance between the objective lens and the recording surface of the optical disk is reduced by using a high NA objective lens, it is necessary to reduce the surface blur of the optical disk before the focus servo at the start is pulled in. The objective lens and the optical disk may collide, causing a pickup failure.

短波長,高NAの大容量光ディスクとして、例えば非特許文献1に記載されているように、CDと同程度に厚く、かつ剛性の大きい基板に記録膜を成膜し、記録/再生用の光を基板を通さずに、薄いカバー層内を通して記録膜に対して記録/再生する構成のシステムが提案されている。   As a short-wavelength, high-NA high-capacity optical disk, for example, as described in Non-Patent Document 1, a recording film is formed on a substrate that is as thick as a CD and has high rigidity, and is used for recording / reproducing light. Has been proposed which records / reproduces data on / from a recording film through a thin cover layer without passing through the substrate.

また、特許文献1〜5あるいは非特許文献2には、ベルヌーイの法則による空気力学的作用力を利用して光ディスクにおける面ぶれを安定化させるため、安定化部材に対向させて可撓性を有する光ディスクを回転させる構成の記録/再生装置、あるいは可撓性を有する光ディスクの構成などについての記載がある。
特開平7−105657号公報 特開平10−308059号公報 米国特許出願公開第2002/0186636号明細書 特開2002−269855号公報 特開2002−358759号公報 オー・プラス・イー(O PLUS E)第20巻,第2号,P.183ページ 「オプティカル・リードアウト・オブ・ビデオディスク」 アイイーイーイー・トランザクション・オン・コンシューマー・エレクトロニクス(“OPTICAL READOUT OF VIDEODISC”,IEEE TRANSACTION ON CONSUMER ELECTRONICS),1976年11月、P.304−308
Further, in Patent Documents 1 to 5 or Non-Patent Document 2, in order to stabilize the surface blur in the optical disk by utilizing the aerodynamic action force according to Bernoulli's law, it has flexibility by facing the stabilizing member. There is a description of a recording / reproducing apparatus configured to rotate an optical disk or a flexible optical disk.
JP-A-7-105657 Japanese Patent Laid-Open No. 10-308059 US Patent Application Publication No. 2002/0186636 JP 2002-269855 A JP 2002-358759 A O PLUS E Vol. 20, No. 2, P.E. 183 pages “Optical Lead-Out of Video Disc”, “EITA TRANSPORTATION ON CONSUMER ELECTRONICS”, November 1976, P.I. 304-308

しかしながら、前記従来の技術において、光ディスクの基板を剛体で形成すると、回転する光ディスクにおける面ぶれ,チルトを小さくするためには、きわめて正確な成形をし、かつ熱変形が生じないように低温で記録膜を成膜しなければならない。このことは、光ディスク製造に係るタクトタイムを長くすることになり、コストを上げる原因となる。   However, in the conventional technique, when the optical disk substrate is formed of a rigid body, in order to reduce surface deflection and tilt in the rotating optical disk, extremely accurate molding is performed and recording is performed at a low temperature so that thermal deformation does not occur. A film must be deposited. This prolongs the tact time associated with optical disc manufacture and increases costs.

また、特許文献2に記載されているように可撓性のある光ディスクを安定板上で回転させる方法では、光ディスクと安定化板が接して摺動する危険性が高く、ディスク面あるいは安定化板面が傷ついてしまうという問題がある。この摺動により、発塵を引き起こして、その塵埃などがエラーを発生させる原因となる。   Further, in the method of rotating a flexible optical disk on a stabilization plate as described in Patent Document 2, there is a high risk that the optical disk and the stabilization plate slide in contact with each other. There is a problem that the surface is damaged. This sliding causes dust generation, which causes an error.

特に特許文献1に記載されているように、安定化板側に記録膜が存在する構成であると、摺動により光ディスクの記録膜を損傷して、直接エラーを引き起こすことになる。また、単に平面状の安定化板を用いただけでは、ディスク面振れの低減効果にも限界があり、高NAの対物レンズを使用する際に、対物レンズとディスクが衝突する危険性は未だ問題として残されたままである。   In particular, as described in Patent Document 1, when the recording film is present on the stabilizing plate side, the recording film of the optical disk is damaged by sliding, and an error is directly caused. Moreover, there is a limit to the effect of reducing the disc surface shake by simply using a flat stabilizer, and the risk of collision between the objective lens and the disc is still a problem when using a high NA objective lens. It remains.

安定化板を用いる方法の一つとして、非特許文献2に記載されているような方法もある。この構成においては、U-shaped stabilizerなる2つの安定化部材から構成される部材により形成した狭いギャップに、フレシキブルディスクを挟んで回転させることにより、飛躍的に小さなディスク面ぶれに抑えることを実現できるものの、非特許文献2にも記載されているように、フレキシブルディスクと安定化部材の間のギャップが片側25μmと小さいため、安定化部材とディスク間にゴミなどを巻き込んで、記録膜を損傷し、直接エラーを引き起こす危険性がある。特に、この構成においては、安定化部材がディスクの表裏で必ず近接するため、情報記録部をディスクの表裏のいずれに形成した場合にも、この問題は避けることができない。   As one of the methods using the stabilizing plate, there is a method as described in Non-Patent Document 2. In this configuration, by rotating the flexible disc with a narrow gap formed by a member composed of two stabilizing members called U-shaped stabilizers, it is possible to achieve dramatic reduction in disc surface fluctuation. However, as described in Non-Patent Document 2, since the gap between the flexible disk and the stabilizing member is as small as 25 μm on one side, dust or the like is caught between the stabilizing member and the disk, and the recording film is damaged. There is a risk of causing an error directly. In particular, in this configuration, since the stabilizing member is always close to the front and back of the disc, this problem cannot be avoided even when the information recording portion is formed on either the front or back of the disc.

これらの問題を解決するための1つの手段として、本件出願人は、特許文献3などにおいて、光ディスクとの対向面が円弧状をなす円柱状の安定化ガイド部材を用い、光ディスクにおける安定化ガイド部材による空気圧の作用による面ぶれが安定する部位におけるディスク回転方向上流側と下流側とに空気圧の作用を生じさせない領域(安定化ガイド部材がない空間部)を設けて、面ぶれを安定化させた部位の前後位置に光ディスクに「逃げ」となる部分を存在させ、面ぶれを安定化させた部位での光ディスクにおける反発力を小さくすることにより、空気力による安定化力の効果を増大させる発明を提案した。   As one means for solving these problems, the applicant of the present application uses a cylindrical stabilization guide member in which a surface facing the optical disc forms an arc shape in Patent Document 3, etc. A region where no air pressure action is generated (a space without a stabilizing guide member) is provided on the upstream and downstream sides of the disk rotation direction at the part where the surface shake due to the air pressure action is stable. An invention that increases the effect of the stabilizing force by aerodynamic force by reducing the repulsive force in the optical disc at the portion where the surface blurring is stabilized by making the optical disc have a portion that becomes “escape” before and after the portion. Proposed.

この発明によれば、可撓性を有する光ディスクの面ぶれを確実に抑制し、高密度の記録を可能にし、また対物レンズとの摺接などの不具合の発生を防ぐことが可能となるが、反面、この実現においては、安定化ガイド部材と記録/再生ヘッドの複雑な位置調整制御が必要となるため、ドライブ制御系の負荷が大きくなるばかりでなく、装置コストがかなり高価なものになるという課題がある。   According to the present invention, it is possible to surely suppress the deflection of the optical disc having flexibility, enable high-density recording, and prevent occurrence of problems such as sliding contact with the objective lens. On the other hand, this implementation requires complicated position adjustment control of the stabilizing guide member and the recording / reproducing head, which not only increases the load on the drive control system, but also increases the apparatus cost. There are challenges.

本発明の目的は、前記課題を解決し、可撓性を有する記録ディスクを回転させ、ベルヌーイ効果を作用させる安定化部材の簡易的な制御により、記録/再生位置における良好なディスク面ぶれ低減をディスク半径方向に渡って実現することができ、また、この制御に伴う記録/再生手段の記録/再生位置への位置調整も容易に行うことのできるようにした記録/再生装置、および可撓性を有する記録ディスクが収納され、かつ安定化部材を備えたディスクカートリッジを提供することにある。   The object of the present invention is to solve the above-mentioned problems, and by rotating the flexible recording disk and simply controlling the stabilizing member that acts on the Bernoulli effect, it is possible to reduce the disk surface shake at the recording / reproducing position. Recording / reproducing apparatus that can be realized in the radial direction of the disk, and that can be easily adjusted to the recording / reproducing position of the recording / reproducing means accompanying this control, and flexibility It is an object of the present invention to provide a disk cartridge that accommodates a recording disk having the above and includes a stabilizing member.

前記目的を達成するため、請求項1に記載の発明は、可撓性を有する記録ディスクを回転させ、ベルヌーイ効果を利用して少なくとも記録/再生位置付近における前記記録ディスクの面ぶれを抑制する主安定化部材と、前記記録ディスクの主たるベルヌーイ効果の作用面とは逆の面において記録および/または再生を行う記録/再生手段とを備えた記録/再生装置において、前記記録ディスクの面内を、前記記録/再生手段が走査する動線に近接し、かつ該記録ディスクの中心付近を通る直線Aによって2つの領域に分け、該領域の少なくとも一方に、空気力学的な作用力を発生させて、前記主安定化部材が位置する前記記録ディスク面において前記主安定化部材を作用させた場合に発生するディスク面の対抗力が大きくなるように補助安定化部材を配設し、さらに前記主安定化部材を、前記記録/再生手段のディスク半径方向の走査動線に対向して延在させたことを特徴とし、この構成によって、簡略化された安定化部材の機構・動作にて良好な面ぶれ低減効果が得られるようになり、また、この面ぶれ低減領域は、任意のディスク半径上の線状領域に一度に形成され、これにより、記録/再生における基本動作は、記録/再生手段による該線状領域の走査のみでよくなり、記録/再生手段の記録/再生位置への位置調整が極めて容易になる。また、この構成によって、記録/再生位置において、主安定化部材を記録ディスクの片面のみに作用させるだけで面ぶれを効率的に抑制することができ、特に記録ディスクの両面でディスクを挟み込むなどの構造が必要なくなるため、記録層を主安定化部材の作用面とは逆側に形成する構成にすれば、主安定化部材と記録ディスクとの衝突により記録情報が欠落してエラーが増大するなどの不具合を避けることができる。   In order to achieve the above-mentioned object, the invention according to claim 1 is characterized in that a flexible recording disk is rotated and the surface fluctuation of the recording disk at least near the recording / reproducing position is suppressed by utilizing the Bernoulli effect. In a recording / reproducing apparatus comprising a stabilizing member and recording / reproducing means for performing recording and / or reproduction on a surface opposite to a surface on which the main Bernoulli effect acts on the recording disk, an in-plane of the recording disk is provided. The recording / reproducing means is divided into two regions by a straight line A that is close to the flow line scanned by the recording / reproducing means and passes near the center of the recording disk, and generates an aerodynamic force in at least one of the regions, Auxiliary stabilization so that the opposing force of the disk surface generated when the main stabilizing member is applied to the recording disk surface on which the main stabilizing member is located increases. And a main stabilizing member extending opposite to a scanning flow line in the radial direction of the disk of the recording / reproducing means. A good surface blur reduction effect can be obtained by the mechanism and operation of the member, and this surface blur reduction region is formed at once in a linear region on an arbitrary disk radius, thereby recording / reproducing. The basic operation in is only to scan the linear area by the recording / reproducing means, and the position adjustment of the recording / reproducing means to the recording / reproducing position becomes extremely easy. In addition, with this configuration, it is possible to efficiently suppress the surface blurring by merely causing the main stabilizing member to act on only one side of the recording disk at the recording / reproducing position. Since the structure is not required, if the recording layer is formed on the side opposite to the working surface of the main stabilizing member, the recorded information is lost due to the collision between the main stabilizing member and the recording disk, and errors increase. Can be avoided.

請求項2に記載の発明は、請求項1記載の記録/再生装置において、2つの領域のうち、記録/再生手段に対してディスク回転方向の下流側に位置する領域に、補助安定化部材を少なくとも1つ配設したことを特徴とし、この構成によって、主安定化部材の位置のディスク面が該主安定化部材に対向する力を発生させることができるようになり、請求項1の作用効果を効果的に奏することが可能となる。   According to a second aspect of the present invention, in the recording / reproducing apparatus according to the first aspect, an auxiliary stabilizing member is provided in an area located downstream of the recording / reproducing means in the disk rotation direction, of the two areas. The structure according to claim 1 is characterized in that at least one is arranged, and by this configuration, it is possible to generate a force in which the disk surface at the position of the main stabilizing member faces the main stabilizing member. Can be effectively achieved.

請求項3に記載の発明は、請求項1記載の記録/再生装置において、2つの領域のうち、記録/再生手段に対してディスク回転方向の上流側に位置する領域に、補助安定化部材を少なくとも1つ配設したことを特徴とし、この構成によって、主安定化部材の位置のディスク面が該主安定化部材に対向する力を発生させることができるようになり、請求項1の作用効果を効果的に奏することが可能となる。   According to a third aspect of the present invention, in the recording / reproducing apparatus according to the first aspect, an auxiliary stabilizing member is provided in an area located upstream of the recording / reproducing means in the disk rotation direction, out of the two areas. The structure according to claim 1 is characterized in that at least one is arranged, and by this configuration, it is possible to generate a force in which the disk surface at the position of the main stabilizing member faces the main stabilizing member. Can be effectively achieved.

請求項4に記載の発明は、請求項1記載の記録/再生装置において、2つの領域のそれぞれに、補助安定化部材を少なくとも1つずつ配設したことを特徴とし、この構成によって、主安定化部材の位置のディスク面が該主安定化部材に対向する力を発生させることができるようになり、請求項1の作用効果を効果的に奏することが可能となる。特に請求項2,3の構成と比べて、より良好なディスク面ぶれ低減効果を得ることができる。また、記録ディスクの反り形状によらず請求項1の効果を奏し得る。   According to a fourth aspect of the present invention, in the recording / reproducing apparatus according to the first aspect, at least one auxiliary stabilizing member is disposed in each of the two regions. The disk surface at the position of the adjusting member can generate a force facing the main stabilizing member, and the effect of claim 1 can be effectively achieved. In particular, as compared with the configurations of claims 2 and 3, it is possible to obtain a better disc surface blurring reduction effect. Further, the effect of claim 1 can be obtained regardless of the warped shape of the recording disk.

請求項5に記載の発明は、請求項1〜4いずれか1項に記載の記録/再生装置において、記録ディスクの回転中心部分を保持部材に保持させたときに、該記録ディスクにおける主安定化部材側を押して撓ませた場合に撓みが始まる支点位置を結んだ周部に対して、前記記録ディスクの中心付近を通る直線Aが交差する2点を通り、かつ前記直線Aに垂直な2つの直線B1,B2における前記主安定化部材に近い側の直線B1と遠い側の直線B2とにより挟まれた前記記録ディスク面上の領域に、前記補助安定化部材による前記記録ディスクに対する力の作用点の位置を設定したことを特徴とし、この構成によって、補助安定化部材が記録ディスクに作用する力によって、主安定化部材近傍のディスク面に、該主安定化部材に近づく方向の力を効率的に発生させることが可能となり、主安定化部材による面ぶれ低減効果を向上させることができる。   According to a fifth aspect of the present invention, in the recording / reproducing apparatus according to any one of the first to fourth aspects, when the rotation center portion of the recording disk is held by the holding member, the main stabilization of the recording disk is achieved. Two circumferential lines that pass through the vicinity of the center of the recording disk cross two points perpendicular to the straight line A with respect to the peripheral part connecting the fulcrum positions where the bending starts when the member side is pushed and bent. In the area on the recording disk surface sandwiched between the straight line B1 closer to the main stabilizing member and the far straight line B2 in the straight lines B1 and B2, the point of action of the force on the recording disk by the auxiliary stabilizing member With this configuration, a force in a direction approaching the main stabilizing member is applied to the disk surface near the main stabilizing member by the force that the auxiliary stabilizing member acts on the recording disk. Rate manner it is possible to generate, it is possible to improve the reduction effect runout primarily stabilizing member.

請求項6に記載の発明は、請求項4記載の記録/再生装置において、記録ディスクの回転中心部分を保持部材に保持させたときに、該記録ディスクにおいて主安定化部材側を押して撓ませた場合に撓みが始まる支点位置を結んだ周部に対して、前記記録ディスクの中心付近を通る直線Aが交差する2点を通り、かつ前記直線に垂直な2つの直線B1,B2における前記主安定化部材に近い側の直線B1と遠い側の直線B2とにより挟まれた前記記録ディスク面上の領域内の前記直線B1の近傍に、補助安定化部材による記録ディスクに対する力の作用点の位置を設定したことを特徴とし、この構成によって、請求項5の作用効果に加え、主安定化部材の位置におけるディスク面ぶれをより低減させることができる。   According to a sixth aspect of the present invention, in the recording / reproducing apparatus according to the fourth aspect, when the rotation center portion of the recording disk is held by the holding member, the main stabilizing member side of the recording disk is pushed and bent. In this case, the main stability in two straight lines B1 and B2 passing through two points intersecting a straight line A passing through the vicinity of the center of the recording disk and perpendicular to the peripheral part connecting the fulcrum positions where bending starts. The position of the point of action of the force by the auxiliary stabilizing member on the recording disk is located in the vicinity of the straight line B1 in the region on the recording disk surface sandwiched between the straight line B1 closer to the stabilizing member and the straight line B2 farther. According to this configuration, in addition to the function and effect of the fifth aspect, the disc surface shake at the position of the main stabilizing member can be further reduced.

請求項7に記載の発明は、請求項4記載の記録/再生装置において、2つの領域にそれぞれ存在する少なくとも1つずつの補助安定化部材が対をなし、かつ該補助安定化部材による記録ディスク面に対する力の作用点が直線B1あるいはB2の平行線上に位置するように設定したことを特徴とし、この構成によって、直線A方向のディスク形状の直線性をより高めることができる。この効果に加えて、主安定化部材によるディスク面の安定化力を作用させることにより、より理想的に、ディスク半径方向にわたる線状領域において面ぶれ低減化を図ることができる。   According to a seventh aspect of the present invention, there is provided a recording / reproducing apparatus according to the fourth aspect, wherein at least one auxiliary stabilizing member existing in each of the two areas forms a pair, and the recording disk by the auxiliary stabilizing member. The point of action of the force on the surface is set to be located on the parallel line of the straight line B1 or B2, and this configuration can further improve the linearity of the disk shape in the direction of the straight line A. In addition to this effect, surface blurring can be reduced more ideally in a linear region extending in the disk radial direction by applying a stabilizing force of the disk surface by the main stabilizing member.

請求項8に記載の発明は、請求項1〜7いずれか1項に記載の記録/再生装置において、主安定化部材と安定化部材とを装置本体における筐体に設置したことを特徴とし、この構成によって、カートリッジを用いないか、あるいはカートリッジから記録ディスクを取り出し、記録ディスク単体を駆動する装置に適用して有効である。   The invention according to claim 8 is the recording / reproducing apparatus according to any one of claims 1 to 7, wherein the main stabilizing member and the stabilizing member are installed in a housing in the apparatus main body, This configuration is effective when applied to a device that does not use a cartridge or takes out a recording disk from the cartridge and drives the recording disk alone.

請求項9に記載の発明は、1,5,6または8記載の記録/再生装置において、主安定化部材における記録ディスクに対向する面のディスク円周方向の形状を円近似してなる曲線の曲率半径を、ディスク内周から外周方向にかけて小さくなるように設定したことを特徴とし、この構成によって、ディスク内外周で光ディスクと安定化部材との相対速度が変化して空気力学的な力の条件が変化しても、この変化を前記曲率半径の設定により補償することができ、このためディスク半径方向における記録/再生位置のディスク面ぶれを安定化させることができる。   A ninth aspect of the present invention is the recording / reproducing apparatus according to the first, fifth, sixth or eighth aspect, wherein the main stabilizing member has a curved line formed by circularly approximating the shape of the surface facing the recording disk in the circumferential direction of the disk. The radius of curvature is set so as to decrease from the inner circumference to the outer circumference of the disc. With this configuration, the relative speed between the optical disc and the stabilizing member changes at the inner and outer circumferences of the disc, and the aerodynamic force condition is changed. Can be compensated for by setting the radius of curvature, so that the disc surface shake at the recording / reproducing position in the disc radial direction can be stabilized.

請求項10に記載の発明は、1,5,6または8記載の記録/再生装置において、主安定化部材におけるディスク円周方向の有効領域幅を、ディスク内周から外周方向にかけて小さくなるように設定したことを特徴とし、この構成によって、ディスク内外周で光ディスクと安定化部材との相対速度が変化して空気力学的な力の条件が変化しても、この変化を前記有効領域幅の設定により補償することができ、このためディスク半径方向における記録/再生位置のディスク面ぶれを安定化させることができる。   According to a tenth aspect of the present invention, in the recording / reproducing apparatus according to the first, fifth, sixth, or eighth aspect, the effective area width in the disk circumferential direction of the main stabilizing member is reduced from the inner circumference to the outer circumference. Even if the relative speed between the optical disc and the stabilizing member changes on the inner and outer circumferences of the disc and the aerodynamic force condition changes, this change is set to the effective area width. Therefore, the fluctuation of the disk surface at the recording / reproducing position in the radial direction of the disk can be stabilized.

請求項11に記載の発明は、1,5,6または8記載の記録/再生装置において、安定化部材における記録ディスクに対向する面のディスク円周方向の形状を円近似してなる曲線の曲率半径を、ディスク内周から外周方向にかけて小さくなるように設定すると共に、該安定化部材におけるディスク円周方向の有効領域幅を、ディスク内周から外周方向にかけて小さくなるように設定したことを特徴とし、この構成によって、請求項9,10よりもさらに効果的に、ディスク半径方向における記録/再生位置のディスク面ぶれを安定化させることができる。   According to the eleventh aspect of the present invention, in the recording / reproducing apparatus according to the first, fifth, sixth, or eighth aspect, a curvature of a curve formed by circularly approximating a shape in a disk circumferential direction of a surface of the stabilizing member facing the recording disk. The radius is set so as to decrease from the inner periphery to the outer periphery of the disc, and the effective area width in the disc circumferential direction of the stabilizing member is set to decrease from the inner periphery to the outer periphery of the disc. With this configuration, it is possible to stabilize the disc surface fluctuation at the recording / reproducing position in the disc radial direction more effectively than in the ninth and tenth aspects.

請求項12に記載の発明は、内部に収納された可撓性を有する記録ディスクの回転時、ベルヌーイ効果を利用して少なくとも記録/再生位置付近における前記記録ディスクの面ぶれを抑制する主安定化部材と、前記記録ディスクの面内を、前記記録/再生手段が走査する動線に近接し、かつ該記録ディスクの中心付近を通る直線Aによって2つの領域に分け、該領域の少なくとも一方に、空気力学的な作用力を発生させて、前記主安定化部材が位置する前記記録ディスク面において前記主安定化部材に対向する作用力を発生させる補助安定化部材とが作用する構成のディスクカートリッジであって、前記主安定化部材を、前記記録/再生手段のディスク半径方向の走査動線に対向して延在するようにカートリッジ内壁に設けたことを特徴とし、この構成によって、ディスクカートリッジごとに主安定化部材を個別に設定することができることから、各種記録ディスクの仕様ごとに主安定部材を個々に設計することが可能となり、ディスク仕様のばらつきによる主安定化部材に関わる安定化条件のずれを補正することが可能となる。   The invention according to claim 12 is the main stabilization that suppresses the surface shake of the recording disk at least in the vicinity of the recording / reproducing position by utilizing the Bernoulli effect when the flexible recording disk accommodated therein is rotated. The member and the in-plane of the recording disk are divided into two regions by a straight line A that is close to the flow line scanned by the recording / reproducing means and passes near the center of the recording disk, and at least one of the regions, A disc cartridge configured to generate an aerodynamic force and an auxiliary stabilizing member that generates an acting force opposite to the main stabilizing member on the surface of the recording disk on which the main stabilizing member is located. The main stabilizing member is provided on the inner wall of the cartridge so as to extend opposite to the scanning flow line in the disk radial direction of the recording / reproducing means. With this configuration, the main stabilization member can be set individually for each disc cartridge, so it is possible to design the main stabilization member individually for each type of recording disc, and the main stabilization due to variations in disc specifications It is possible to correct the deviation of the stabilization condition related to the member.

請求項13に記載の発明は、内部に収納された可撓性を有する記録ディスクの回転時、記録/再生手段のディスク半径方向の走査動線に対向して延在し、ベルヌーイ効果を利用して少なくとも記録/再生位置付近における前記記録ディスクの面ぶれを抑制する主安定化部材が作用する構成のディスクカートリッジであって、前記記録ディスクの面内を、記録/再生装置側に設けられた記録/再生手段が走査する動線に近接し、かつ該記録ディスクの中心付近を通る直線Aによって2つの領域に分け、該領域の少なくとも一方に、空気力学的な作用力を発生させて、前記主安定化部材が位置する前記記録ディスク面において前記主安定化部材を作用させた場合に発生するディスク面の対抗力が大きくなるように補助安定化部材をカートリッジ内壁に設けたことを特徴とし、この構成によって、ディスクカートリッジごとに補助安定化部材を個別に設定することができることから、各種記録ディスクの仕様ごとに補助安定部材を個々に設計することが可能となり、ディスク仕様のばらつきによる補助安定化部材に関わる安定化条件のずれを補正することが可能となる。   According to the thirteenth aspect of the present invention, when the flexible recording disk accommodated therein is rotated, the recording / reproducing means extends opposite to the scanning flow line in the radial direction of the disk and utilizes the Bernoulli effect. A disk cartridge having a configuration in which a main stabilizing member that suppresses surface blurring of the recording disk at least in the vicinity of the recording / reproducing position acts, wherein the recording disk is provided on the recording / reproducing apparatus side within the surface of the recording disk. / Divided into two areas by a straight line A that is close to the flow line scanned by the reproducing means and passes near the center of the recording disk, and generates aerodynamic action force in at least one of the areas, The auxiliary stabilizing member is placed in the cartridge so that the opposing force of the disk surface generated when the main stabilizing member is applied to the recording disk surface on which the stabilizing member is located increases. With this configuration, the auxiliary stabilizing member can be individually set for each disk cartridge, so that it becomes possible to individually design the auxiliary stabilizing member for each recording disk specification. It is possible to correct the deviation of the stabilization condition related to the auxiliary stabilizing member due to the variation in the disk specification.

請求項14に記載の発明は、可撓性を有する記録ディスクが収納され、該記録ディスクの回転時、ベルヌーイ効果を利用して少なくとも記録/再生位置付近における前記記録ディスクの面ぶれを抑制する主安定化部材を備えたディスクカートリッジにおいて、前記主安定化部材を、前記記録/再生手段のディスク半径方向の走査動線に対向して延在するようにカートリッジ内壁に設けると共に、前記記録ディスクの面内を、記録/再生装置側に設けられた記録/再生手段が走査する動線に近接し、かつ該記録ディスクの中心付近を通る直線Aによって2つの領域に分け、該領域の少なくとも一方に、空気力学的な作用力を発生させて、前記主安定化部材が位置する前記記録ディスク面において前記主安定化部材を作用させた場合に発生するディスク面の対抗力が大きくなるように補助安定化部材をカートリッジ内壁に設けたことを特徴とし、この構成によって、ディスクカートリッジごとに主安定化部材および補助安定化部材を個別に設定することができることから、各種記録ディスクの仕様ごとに主安定化部材および補助安定部材を個々に設計することが可能となり、ディスク仕様のばらつきによる主安定化部材および補助安定化部材に関わる安定化条件のずれを補正することが可能となる。また、記録/再生装置側に安定化部材を配設する必要がなくなり、記録/再生装置における構成の簡略化を図ることができる。   According to the fourteenth aspect of the present invention, a flexible recording disk is accommodated, and at the time of rotation of the recording disk, the main surface of the recording disk is suppressed at least near the recording / reproducing position using the Bernoulli effect. In the disk cartridge provided with the stabilizing member, the main stabilizing member is provided on the inner wall of the cartridge so as to extend facing the scanning flow line in the disk radial direction of the recording / reproducing means, and the surface of the recording disk Is divided into two areas by a straight line A that is close to the flow line that the recording / reproducing means provided on the recording / reproducing apparatus side scans and passes near the center of the recording disk, and at least one of the areas, When the main stabilizing member is caused to act on the surface of the recording disk on which the main stabilizing member is located by generating an aerodynamic acting force, The auxiliary stabilizing member is provided on the inner wall of the cartridge so as to increase the opposing force of the disk surface. With this configuration, the main stabilizing member and the auxiliary stabilizing member can be individually set for each disk cartridge. Therefore, it is possible to individually design the main stabilization member and auxiliary stabilization member for each specification of various recording discs, and correct the deviation of the stabilization conditions related to the main stabilization member and auxiliary stabilization member due to disc specification variation It becomes possible to do. Further, it is not necessary to provide a stabilizing member on the recording / reproducing apparatus side, and the configuration of the recording / reproducing apparatus can be simplified.

請求項15に記載の発明は、請求項12,13または14記載のディスクカートリッジにおいて、主安定化部材と補助安定化部材との位置を調整可能にしたことを特徴とし、この構成によって、記録ディスクの仕様に応じて安定化部材の位置調整を行うことによって、より効果的にディスク面ぶれを安定化させることが可能になる。   According to a fifteenth aspect of the present invention, in the disc cartridge according to the twelfth, thirteenth, or fourteenth aspect, the positions of the main stabilizing member and the auxiliary stabilizing member can be adjusted. By adjusting the position of the stabilizing member in accordance with the specifications, it is possible to stabilize the disk surface shake more effectively.

以上説明したように、本発明によれば、可撓性を有する記録ディスクの面ぶれをベルヌーイ効果を利用して少なくとも記録/再生位置付近において抑制するための主安定化部材を、記録/再生手段のディスク半径方向の走査動線に対向して延在させ、さらに前記主安定化部材と共に面ぶれの抑制を行う補助安定化部材を、記録ディスクの面内を、前記記録/再生手段が走査する動線に近接し、かつ該記録ディスクの中心付近を通る直線Aによって2つの領域に分け、該領域の少なくとも一方に、空気力学的な作用力を発生させて、前記主安定化部材が位置する前記記録ディスク面において前記主安定化部材を作用させた場合に発生するディスク面の対抗力が大きくなるように補助安定化部材を配設することにより、簡略化された安定化部材の機構・動作にて良好な面ぶれ低減効果が得られるようになる。   As described above, according to the present invention, the main stabilizing member for suppressing the deflection of the recording disk having flexibility at least in the vicinity of the recording / reproducing position using the Bernoulli effect is the recording / reproducing means. The recording / reproducing means scans the surface of the recording disk with an auxiliary stabilizing member which extends opposite to the scanning flow line in the radial direction of the disk and further suppresses surface blur together with the main stabilizing member. The main stabilizing member is located by dividing it into two regions by a straight line A that is close to the flow line and passes through the vicinity of the center of the recording disk, and generating an aerodynamic force in at least one of the regions. By arranging the auxiliary stabilizing member so that the opposing force of the disk surface generated when the main stabilizing member is applied to the recording disk surface is increased, the simplified stabilizing member Good runout reduction in structure and operation can be obtained.

また、この面ぶれ低減領域は、任意のディスク半径上の線状領域に一度に形成され、これにより、記録/再生における基本動作は、記録/再生手段による該線状領域の走査のみでよくなり、記録/再生手段の記録/再生位置への位置調整が極めて容易になる。   Further, the surface blur reduction area is formed at a time on a linear area on an arbitrary disk radius, so that the basic operation in recording / reproducing is only scanning of the linear area by the recording / reproducing means. The position adjustment of the recording / reproducing means to the recording / reproducing position becomes extremely easy.

このようにして、ディスク半径方向における記録/再生位置のディスク面ぶれを安定化させることができるため、可撓性を有する記録ディスクに対する安定した記録/再生が実現する。   In this way, since the disc surface fluctuation at the recording / reproducing position in the disc radial direction can be stabilized, stable recording / reproducing with respect to the flexible recording disc is realized.

以下、本発明の実施の形態を図面を参照して説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

図1は本発明の記録/再生装置の実施形態1を説明するための要部の平面図、図2は図1の実施形態1の正面図であり、1は可撓性を有する記録ディスクである光ディスク、2は光ディスク1の回転中心(中央)部分に装着された光ディスク1を回転させるために保持する一方の保持部材であるハブ、3は他方の保持部材であるチャッキング部をハブ2に嵌合して光ディスク1を回転駆動するスピンドルモータ、4は、光ディスク1の半径方向に移動して光ディスク1に対して光ビームを集光させ、情報の記録/再生処理を行うため光ディスク1に対して光走査(動線R方向)を行う記録/再生手段である光ピックアップである。   FIG. 1 is a plan view of an essential part for explaining Embodiment 1 of the recording / reproducing apparatus of the present invention, FIG. 2 is a front view of Embodiment 1 of FIG. 1, and 1 is a recording disk having flexibility. A certain optical disk 2 is a hub which is one holding member for rotating the optical disk 1 mounted on the rotation center (center) portion of the optical disk 1, and 3 is a hub 2 which has a chucking portion which is the other holding member. The spindle motor 4 that engages and rotates the optical disk 1 moves in the radial direction of the optical disk 1 to focus the light beam on the optical disk 1 to perform information recording / reproduction processing. The optical pickup is a recording / reproducing means for performing optical scanning (in the flow line R direction).

さらに、5は、正面から見て光ディスク1側が円弧状に突出し、かつ平面から見て長方形をなし、図1に示すように、平面状態において長手方向が光ピックアップ4におけるディスク半径方向の走査動線Rに対向して延在する主安定化部材であって、主安定化部材5は、ベルヌーイの法則による空気力学的作用力を利用して、光ディスク1における少なくとも光ピックアップ4による記録/再生位置付近の光ディスクの面ぶれを抑制するものである。   Further, reference numeral 5 denotes an optical disc 1 side projecting in an arc shape when viewed from the front, and a rectangular shape when viewed from the plane. As shown in FIG. A main stabilizing member extending opposite to R, and the main stabilizing member 5 uses an aerodynamic acting force according to Bernoulli's law to at least the vicinity of a recording / reproducing position by the optical pickup 4 in the optical disc 1 This is to suppress the surface shake of the optical disc.

さらに、6は、主安定化部材5と共に作用して、光ディスク1に対して空気力学的作用力を作用させる補助安定化部材であって、主安定化部材5と補助安定化部材6とは光ディスク1の記録面とは反対側のディスク基板側に配設されている。   Further, reference numeral 6 denotes an auxiliary stabilizing member that acts together with the main stabilizing member 5 to apply an aerodynamic acting force to the optical disc 1. The main stabilizing member 5 and the auxiliary stabilizing member 6 are optical discs. 1 is disposed on the side of the disk substrate opposite to the recording surface.

また、実施形態1では、光ディスク1の面内を光ピックアップ4が走査するために移動する動線Rと近接し、かつ光ディスク1の中心付近を通る直線(図では動線R上に記載したが、動線R近傍にあるものも含む)Aによって分けた2つの領域S1,S2のうち、光ピックアップ4における光ディスク回転方向の下流側に位置する領域S2に、主安定化部材5とは独立して補助安定化部材6を少なくとも1つ(実施形態1では1つのみを示す)配設している。   Further, in the first embodiment, a straight line that is close to the flow line R that moves so that the optical pickup 4 scans in the plane of the optical disk 1 and passes through the vicinity of the center of the optical disk 1 (shown on the flow line R in the figure). Of the two regions S1 and S2 divided by A (including those in the vicinity of the flow line R), the region S2 located downstream of the optical pickup 4 in the optical disc rotation direction is independent of the main stabilizing member 5. Thus, at least one auxiliary stabilizing member 6 (only one is shown in the first embodiment) is provided.

図3は本発明の記録/再生装置の実施形態2を説明するための要部の平面図、図4は図3の実施形態2の正面図である。なお、以下の説明において、既に説明した部材に対応する部材には同一符号を付して詳しい説明は省略する。   FIG. 3 is a plan view of a main part for explaining Embodiment 2 of the recording / reproducing apparatus of the present invention, and FIG. 4 is a front view of Embodiment 2 of FIG. In the following description, members corresponding to those already described are denoted by the same reference numerals, and detailed description thereof is omitted.

実施形態2が実施形態1と異なる点は、実施形態1にて説明したのと同様にして分けた2つの領域S1,S2のうち、光ピックアップ4における光ディスク回転方向の上流側に位置する領域S1に、主安定化部材5と独立して補助安定化部材6を少なくとも1つ(実施形態1では1つのみを示す)配設した構成である。   The difference between the second embodiment and the first embodiment is that the area S1 located on the upstream side of the optical pickup 4 in the optical disc rotation direction in the two areas S1 and S2 divided in the same manner as described in the first embodiment. In addition, at least one auxiliary stabilizing member 6 (only one is shown in the first embodiment) is provided independently of the main stabilizing member 5.

図5は本発明の記録/再生装置の実施形態3を説明するための要部の平面図、図6は図5の実施形態3の正面図であって、実施形態3が実施形態1,2と異なる点は、実施形態1,2にて説明したのと同様にして分けた2つの領域S1,S2のそれぞれに、主安定化部材5と独立して補助安定化部材6を少なくとも1つずつ(実施形態3では各領域に1つ)を、対称位置に配設した構成である。   FIG. 5 is a plan view of a main part for explaining Embodiment 3 of the recording / reproducing apparatus of the present invention, FIG. 6 is a front view of Embodiment 3 of FIG. The difference is that at least one auxiliary stabilizing member 6 is provided independently of the main stabilizing member 5 in each of the two regions S1 and S2 divided in the same manner as described in the first and second embodiments. (Embodiment 3 has a configuration in which one is provided for each region) at symmetrical positions.

図7は本発明の記録/再生装置の実施形態4を説明するための要部の平面図、図8は図7の実施形態4の正面図である。実施形態4が実施形態3と異なる点は、実施形態3とは逆の光ディスク1の下側に、主安定化部材5と補助安定化部材6を配し、上側に光ピックアップ4を配した構成であって、実施形態1,2にて説明したのと同様にして2つの領域S1,S2のそれぞれに、主安定化部材5と独立して補助安定化部材6を少なくとも1つずつ(実施形態4では各領域に1つ)を、対称位置に配設した構成は同じであって、実施形態4は、光ディスク1を補助安定化部材6に引きつけるように作用させる構成にしており、光ディスク1に補助安定化部材6を押しつけた状態で作用させる実施形態3とは、作用力の与え方において異なる。   FIG. 7 is a plan view of an essential part for explaining Embodiment 4 of the recording / reproducing apparatus of the present invention, and FIG. 8 is a front view of Embodiment 4 of FIG. The fourth embodiment is different from the third embodiment in that the main stabilizing member 5 and the auxiliary stabilizing member 6 are arranged on the lower side of the optical disk 1 opposite to the third embodiment, and the optical pickup 4 is arranged on the upper side. In the same manner as described in the first and second embodiments, at least one auxiliary stabilizing member 6 is provided in each of the two regions S1 and S2 independently of the main stabilizing member 5 (the embodiment). 4 is one in each region), and the configuration in which the optical disc 1 is arranged in a symmetrical position is the same. In the fourth embodiment, the optical disc 1 is operated to be attracted to the auxiliary stabilizing member 6. The third embodiment is different from the third embodiment in which the auxiliary stabilizing member 6 is operated while being pressed.

各実施形態の動作について説明する。   The operation of each embodiment will be described.

前記各実施形態における基本構成である安定化部材と可撓性を有する光ディスクとの間でベルヌーイの法則による空気力学的な力を発生させて、ディスク面ぶれを抑制するためには、安定化部材とディスク間の釣り合い条件が重要であり、特にディスクの安定化部材に向かう反力が重要なパラメータとなる。この反力はディスクの剛性と、ディスクが回転して平坦化しようとすることによって発生する浮上力によって決定される。   In order to suppress disc surface blurring by generating an aerodynamic force according to Bernoulli's law between a stabilizing member which is a basic configuration in each of the embodiments and a flexible optical disc, The balance condition between the disk and the disk is important. In particular, the reaction force toward the stabilizing member of the disk is an important parameter. This reaction force is determined by the rigidity of the disk and the flying force generated when the disk rotates and flattens.

一方、任意の安定化部材によりディスク面に空気力学的な力を作用させた際には、該安定化部材におけるディスク回転方向の上下流のほぼ±90度付近のディスク面が、ディスクを理想平面と考えた場合のディスク基準面付近に近づき、かつディスク面の剛性が上がる現象を示した。   On the other hand, when an aerodynamic force is applied to the disk surface by an arbitrary stabilizing member, the disk surface in the vicinity of ± 90 degrees upstream and downstream of the disk rotating direction of the stabilizing member The phenomenon of approaching the disk reference surface and increasing the rigidity of the disk surface was shown.

そこで、本発明の各実施形態では、任意の安定化部材から±90度ずれた位置のディスク面がディスク基準面付近に近づき、かつディスク面の剛性が上がる現象を、上述した反力として利用して、安定化部材とディスク間の釣り合い条件を調整することを可能にしている。具体的には、光ディスク1の表面に補助安定化部材6を作用させ、該補助安定化部材6から略90度ずれた位置に配置した主安定化部材5の位置において釣り合い条件を調整している。   Therefore, in each embodiment of the present invention, the phenomenon that the disk surface at a position shifted ± 90 degrees from an arbitrary stabilizing member approaches the disk reference surface and the rigidity of the disk surface increases is used as the reaction force described above. Thus, it is possible to adjust the balance condition between the stabilizing member and the disk. Specifically, the auxiliary stabilizing member 6 is made to act on the surface of the optical disc 1, and the balance condition is adjusted at the position of the main stabilizing member 5 arranged at a position shifted by approximately 90 degrees from the auxiliary stabilizing member 6. .

また、この補助安定部材6の作用によって、主安定化部材5付近のディスク形状は、半径方向全域にわたって略直線状になり、ディスク半径方向に延在させた形状の主安定化部材5の適用が容易となる。すなわち、主安定化部材5をディスク表面に作用させるにあたり、補助安定化部材6の作用によって、あらかじめ光ディスク1上の作用表面を略直線状としておくことにより、主安定化部材5の安定化効果を十分に引き出すことが可能となる。   Also, due to the action of the auxiliary stabilizing member 6, the disk shape in the vicinity of the main stabilizing member 5 becomes substantially linear throughout the radial direction, and the main stabilizing member 5 having a shape extending in the disk radial direction can be applied. It becomes easy. That is, when the main stabilizing member 5 is allowed to act on the disk surface, the effect of the main stabilizing member 5 is obtained by making the working surface on the optical disk 1 substantially linear in advance by the action of the auxiliary stabilizing member 6. It can be pulled out sufficiently.

このように、ディスク半径方向に延在させた主安定化部材5を効果的に作用させることにより、ディスク半径方向全域にわたって、ディスク面ぶれを一度に低減することが可能となる。すなわち、この安定化作用により、光ディスク1の任意の半径上に面ぶれを低減した線状領域を形成することができる。   As described above, by effectively acting the main stabilizing member 5 extending in the disk radial direction, it is possible to reduce the disk surface shake at once over the entire area in the disk radial direction. That is, by this stabilizing action, a linear region with reduced surface blur can be formed on an arbitrary radius of the optical disc 1.

図5,図6に示す実施形態3の構成では、補助安定化部材6の作用により、実施形態1,2の構成に比べて、さらに良好な面ぶれ低減効果が半径方向全域にわたって得られた。   In the configuration of the third embodiment shown in FIGS. 5 and 6, the effect of the auxiliary stabilizing member 6 can provide a better surface blur reduction effect over the entire radial direction than the configurations of the first and second embodiments.

実施形態1〜3の構成において、主安定化部材5にチルト制御系などを付加して、より高精度の微調整を行うことにより、記録/再生位置における面ぶれを最適化することができることはいうまでもない。   In the configurations of the first to third embodiments, it is possible to optimize the surface blur at the recording / reproducing position by adding a tilt control system or the like to the main stabilizing member 5 and performing fine adjustment with higher accuracy. Needless to say.

また、本補助安定化部材6によれば、光ディスク1の静的な反り形状などに関わらず、いかなる仕様の記録ディスクにおいても、記録/再生位置におけるディスク面ぶれを確実に低減できた。   Further, according to the auxiliary stabilizing member 6, the disc surface fluctuation at the recording / reproducing position can be surely reduced in any recording disc regardless of the static warp shape of the optical disc 1.

実施形態1〜3において、図1に例示して示すように、光ディスク1のハブ2をスピンドルモータ3のチャッキング部に固定して、安定化部材5,6側を押して撓ませた場合に光ディスク1において撓みが始まる支点位置(図1ではハブ2の外周)を結んだ領域(図1では円形領域)と直線Aとが交差する2点を通り、かつ該直線Aに垂直な2つの直線、すなわち主安定化部材5に近い側の直線B1と遠い側の直線B2とにより挟まれたディスク面上の領域Cに、補助安定化部材6による光ディスク1に対する空気力学的な力の作用点Dを配置する構成にすることが有効であった。   In Embodiments 1 to 3, when the hub 2 of the optical disk 1 is fixed to the chucking portion of the spindle motor 3 and is bent by pressing the stabilizing members 5 and 6 as illustrated in FIG. 1, two straight lines that pass through two points intersecting the straight line A and a region (circular region in FIG. 1) connecting the fulcrum positions where the fulcrum starts to be bent (the outer periphery of the hub 2 in FIG. 1) and the straight line A, That is, the point of action D of the aerodynamic force applied to the optical disk 1 by the auxiliary stabilizing member 6 is set in a region C on the disk surface sandwiched between the straight line B1 closer to the main stabilizing member 5 and the straight line B2 farther. It was effective to make the configuration to be arranged.

この構成によって、補助安定化部材6が光ディスク1に作用する力によって、主安定化部材5近傍のディスク面に、主安定化部材5に近づく方向の力を効率的に発生させると共に、同部位におけるディスク半径方向のディスク形状を略直線状に安定状態にすることができた。   With this configuration, the force that the auxiliary stabilizing member 6 acts on the optical disc 1 efficiently generates a force in the direction approaching the main stabilizing member 5 on the disk surface in the vicinity of the main stabilizing member 5, and at the same site. The disk shape in the disk radial direction could be stabilized in a substantially straight line.

特に、実施形態3においては、図9,図10に示す変形例のように、光ディスク1のハブ2をスピンドルモータ3のチャッキング部に固定して、安定化部材5,6側を押して撓ませた場合に光ディスク1において撓みが始まる支点位置(図9ではハブ2の外周)を結んだ周部(図9では円形領域)と直線Aとが交差する2点を通り、かつ該直線Aに垂直な2つの直線、すなわち主安定化部材5に近い側の直線B1と遠い側の直線B2とにより挟まれたディスク面上の領域Cにおいて、主安定化部材5に近い側の直線B1近傍に、補助安定化部材6の作用点21を配置する構成が有効であった。   In particular, in the third embodiment, the hub 2 of the optical disc 1 is fixed to the chucking portion of the spindle motor 3 and is bent by pushing the stabilizing members 5 and 6 side as in the modified examples shown in FIGS. In this case, the optical disk 1 passes through two points where the peripheral part (circular area in FIG. 9) connecting the fulcrum positions where the bending starts (the outer periphery of the hub 2 in FIG. 9) and the straight line A intersect, and is perpendicular to the straight line A. In a region C on the disk surface sandwiched between two straight lines, that is, a straight line B1 nearer to the main stabilizing member 5 and a straight line B2 farther from the main stabilizing member 5, in the vicinity of the straight line B1 closer to the main stabilizing member 5. The configuration in which the action point 21 of the auxiliary stabilizing member 6 is arranged is effective.

また、図9に示す構成において、2つの領域S1,S2にそれぞれ存在する少なくとも1つずつの補助安定化部材6が対をなし、補助安定化部材6によるディスク面に対する力の作用点21を前記直線B1あるいはB2の平行線上に配置する構成とすることにより、直線A方向のディスク形状における直線性を高めることができた。さらに、主安定化部材5によるディスク面の安定化力を作用させることにより、より理想的な記録/再生位置の面ぶれ低減を実現することができた。   Further, in the configuration shown in FIG. 9, at least one auxiliary stabilizing member 6 present in each of the two regions S1 and S2 forms a pair, and the action point 21 of the force of the auxiliary stabilizing member 6 on the disk surface is described above. The linearity in the disk shape in the direction of the straight line A could be improved by adopting a configuration in which it is arranged on the straight line B1 or B2. Furthermore, by applying the stabilizing force of the disk surface by the main stabilizing member 5, it was possible to realize a more ideal surface shake reduction at the recording / reproducing position.

また、前記補助安定化部材6の形状は、ディスク対向面が円弧状をなす円柱形状のものに限らず、例えば図11,図12に示す本発明の実施形態5のように、半円状の平板材からなる補助安定化部材8を使用して、光ディスク1の面内において、光ピックアップ4が走査するために移動する動線R近傍を除いて(ディスク面の面ぶれが安定するディスク基準面となる領域)、前記のように光ディスク1の中心付近を通る直線Aによって分けた2つの領域S1,S2を覆うように配設する構成にすることも考えられる。なお、当該補助安定化部材8は2つの領域S1,S2の少なくともいずれか一方に配設すればよい。   Further, the shape of the auxiliary stabilizing member 6 is not limited to a columnar shape in which the disk-facing surface forms an arc shape. For example, as in Embodiment 5 of the present invention shown in FIGS. Using the auxiliary stabilizing member 8 made of a flat plate material, except for the vicinity of the flow line R in which the optical pickup 4 moves in the plane of the optical disc 1 (the disc reference surface on which the disc surface shake is stable). As described above, it is also conceivable to arrange so as to cover the two areas S1 and S2 divided by the straight line A passing through the vicinity of the center of the optical disc 1. The auxiliary stabilizing member 8 may be disposed in at least one of the two regions S1 and S2.

ところで、本実施形態の基本構成である安定化部材をディスク径方向に延在させる構成において、単に矩形状の安定化部材をディスク径方向に延在させただけでは、光ディスクの内周と外周とにおいて光ディスクと安定化部材との相対速度が変化し、これに伴って空気力学的な力の条件が変化するため、ディスク半径方向でディスク面ぶれの安定化条件に差が生じる。   By the way, in the configuration in which the stabilizing member, which is the basic configuration of the present embodiment, extends in the disk radial direction, simply extending the rectangular stabilizing member in the disk radial direction, Since the relative speed between the optical disk and the stabilizing member changes, and the aerodynamic force condition changes accordingly, there is a difference in the stabilization condition of the disk surface shake in the disk radial direction.

そこで、前記空気力学的な力の条件の変化を補償するための該空気力学的な力の条件を検討したところ、安定化部材の光ディスクに対向する面におけるディスク円周方向形状を円近似した曲線の曲率半径、および安定化部材のディスク円周方向における有効領域幅が関係するとの結論に達し、以下のような実施形態の構成を採用することで、既述した実施形態の作用効果をより効果的に奏するようにすることができた。   Therefore, when the aerodynamic force condition for compensating for the change in the aerodynamic force condition was examined, a curve obtained by circularly approximating the circumferential shape of the disk on the surface of the stabilizing member facing the optical disk. The conclusion is that the effective radius of the stabilizing member and the effective area width in the disk circumferential direction of the stabilizing member are related, and by adopting the configuration of the following embodiment, the effects of the above-described embodiment are more effective. I was able to play it.

すなわち、図13は本発明の記録/再生装置の実施形態6を説明するための要部の平面図、図14(a)は図13の安定化部材5におけるA−A線断面図、図14(b)は図13の主安定化部材5におけるB−B線断面図であり、図14(a),(b)のように、実施形態5では、主安定化部材5におけるディスク外周部での曲率半径Rbが、内周部の曲率半径Raよりも小さくなるようにし(Ra>Rb)、かつ主安定化部材5におけるディスク円周方向の有効領域幅が内外周ともLa=Lbであって全体が等しくなるように設定してある。   That is, FIG. 13 is a plan view of the main part for explaining Embodiment 6 of the recording / reproducing apparatus of the present invention, FIG. 14 (a) is a sectional view taken along the line AA in the stabilizing member 5 of FIG. FIG. 14B is a cross-sectional view taken along the line B-B in the main stabilization member 5 of FIG. 13, and in Embodiment 5, as shown in FIGS. 14A and 14B, the outer periphery of the disk in the main stabilization member 5. Is smaller than the curvature radius Ra of the inner peripheral portion (Ra> Rb), and the effective area width in the disk circumferential direction of the main stabilizing member 5 is La = Lb for both the inner and outer periphery. The whole is set to be equal.

また、図15,図16(a),(b)に示す本発明の実施形態7では、外周側での主安定化部材5におけるディスク円周方向の有効領域幅Lbが、内周側での有効領域幅Laよりも小さくなる(La>Lb)ようにし、かつディスク円周方向の曲率半径が内外周ともRa=Rbであって全体が等しくなるように設定してある。   Further, in Embodiment 7 of the present invention shown in FIGS. 15, 16A, and 16B, the effective area width Lb in the disk circumferential direction of the main stabilizing member 5 on the outer peripheral side is the inner peripheral side. It is set to be smaller than the effective area width La (La> Lb), and the radius of curvature in the disk circumferential direction is set to be equal to Ra = Rb in both the inner and outer circumferences.

また、図17,図18(a),(b)に示す本発明の実施形態8では、外周側での主安定化部材5におけるディスク円周方向の有効領域幅Lbが、内周側での有効領域幅Laよりも小さくなる(La>Lb)ようにし、かつ主安定化部材5におけるディスク外周部での曲率半径Rbが、内周部の曲率半径Raよりも小さくなる(Ra>Rb)ように設定してある。   Further, in the eighth embodiment of the present invention shown in FIGS. 17, 18A, and 18B, the effective area width Lb in the disk circumferential direction of the main stabilizing member 5 on the outer peripheral side is the inner peripheral side. The effective area width La is made smaller (La> Lb), and the radius of curvature Rb at the outer periphery of the main stabilizing member 5 is made smaller than the radius of curvature Ra of the inner periphery (Ra> Rb). It is set to.

実施形態6〜8の構成にすることにより、ディスク外周部での反発力を低減し、また内周部での反発力を増大させることにより、ディスク半径方向に生じる該反発力の変化を小さくして、ディスク半径方向全域にわたって面ぶれ低減効果を均一化させることができたのである。   By adopting the configurations of the sixth to eighth embodiments, the repulsive force at the outer peripheral portion of the disk is reduced, and the repulsive force at the inner peripheral portion is increased to reduce the change in the repulsive force generated in the disk radial direction. Thus, the surface blur reduction effect can be made uniform over the entire disk radial direction.

また、前記各実施形態は、主安定化部材5と補助安定化部材6(あるいは図11に示す補助安定化部材8)を、図19に例示するように、装置本体の筐体10に設けることにより、光ディスクを収納するディスクカートリッジを用いないか、あるいはディスクカートリッジから光ディスクを取り出して駆動する記録/再生装置において実施することができる。   In each of the above embodiments, the main stabilizing member 5 and the auxiliary stabilizing member 6 (or the auxiliary stabilizing member 8 shown in FIG. 11) are provided in the casing 10 of the apparatus main body as illustrated in FIG. Thus, the present invention can be implemented in a recording / reproducing apparatus that does not use a disk cartridge that houses an optical disk, or that drives an optical disk taken out from the disk cartridge.

このような構成にして、主安定化部材5と補助安定化部材6とスピンドルモータ3との相対位置を固定することにより、光ピックアップ4の走査に関わらず、主補助安定化部材5と補助安定化部材6の光ディスク1に対する作用点の位置を一定にすることができる。   With such a configuration, by fixing the relative positions of the main stabilizing member 5, the auxiliary stabilizing member 6, and the spindle motor 3, the main auxiliary stabilizing member 5 and the auxiliary stabilizing member are irrespective of the scanning of the optical pickup 4. It is possible to make the position of the action point of the forming member 6 with respect to the optical disc 1 constant.

また、前記各実施形態における主安定化部材5と補助安定化部材6は、図20に示すように、ディスクカートリッジ11の内壁に設けることも可能であり、このように構成することにより、記録/再生装置側に主安定化部材5と補助安定化部材6を設ける必要がなくなり、記録/再生装置側の構成を簡略化することができる。さらに、この構成においては、ディスクカートリッジ11に主安定化部材5と補助安定化部材6を個別に設定することができることから、各種ディスクの仕様ごとに対応させて主安定化部材5と補助安定化部材6を個々に設計することが可能となり、ディスク仕様のばらつきによる安定化条件のずれを補正することが可能となる。   Further, as shown in FIG. 20, the main stabilizing member 5 and the auxiliary stabilizing member 6 in each of the above embodiments can be provided on the inner wall of the disk cartridge 11. It is not necessary to provide the main stabilizing member 5 and the auxiliary stabilizing member 6 on the reproducing apparatus side, and the configuration on the recording / reproducing apparatus side can be simplified. Further, in this configuration, since the main stabilization member 5 and the auxiliary stabilization member 6 can be individually set in the disk cartridge 11, the main stabilization member 5 and the auxiliary stabilization are made to correspond to various disk specifications. The members 6 can be individually designed, and the deviation of the stabilization condition due to the variation in the disk specifications can be corrected.

なお、図20に示すディスクカートリッジ11では、主安定化部材5と補助安定化部材6の両方をディスクカートリッジ11の内壁に設けているが、主安定化部材5と補助安定化部材6との少なくともいずれか一方を設置するようにしてもよく、図11に示す補助安定化部材8を設けるようにしてもよい。   In the disk cartridge 11 shown in FIG. 20, both the main stabilizing member 5 and the auxiliary stabilizing member 6 are provided on the inner wall of the disk cartridge 11, but at least the main stabilizing member 5 and the auxiliary stabilizing member 6 are not provided. Either one may be installed, or the auxiliary stabilizing member 8 shown in FIG. 11 may be provided.

ディスクカートリッジ11としては、例えば図21,図22に示す構成のものを例示することができる。図21,図22において、13は光ピックアップ4およびスピンドルモータ3の一部が挿入され、かつ光ピックアップ4をディスク半径方向に移動可能にするための通孔部である。なお、前記通孔部13を開閉するためのシャッタ、あるいはカートリッジ内で光ディスク1を固定するための機構、さらにカートリッジをスピンドルモータ3に設置する際に必要なその他の機構などに関しては図示していない。   As the disc cartridge 11, for example, the configuration shown in FIGS. 21 and 22 can be exemplified. In FIGS. 21 and 22, reference numeral 13 denotes a through hole portion into which a part of the optical pickup 4 and the spindle motor 3 is inserted, and the optical pickup 4 can be moved in the disk radial direction. It should be noted that a shutter for opening and closing the through-hole portion 13, a mechanism for fixing the optical disc 1 in the cartridge, and other mechanisms necessary for installing the cartridge in the spindle motor 3 are not shown. .

前記実施形態においては、補助安定化部材を主安定化部材と同じ側に配置する構成例を説明したが、補助安定化部材を主安定化部材とディスクを挟んで逆側に配置しても同様のディスク面ぶれ低減効果が得られる。   In the above embodiment, the configuration example in which the auxiliary stabilizing member is disposed on the same side as the main stabilizing member has been described. However, the auxiliary stabilizing member may be disposed on the opposite side of the main stabilizing member and the disk. The disc surface shake reduction effect can be obtained.

また、補助安定化部材を光ディスクへ作用させる方法としては、大別して実施形態1〜3のように、光ディスク面に押し込む方向の作用のさせ方と、実施形態4のように、光ディスク面を引っぱる作用のさせ方との2通りあるが、いずれの方法によっても同様の効果を得ることができる。   In addition, as a method of causing the auxiliary stabilizing member to act on the optical disc, it can be roughly classified as in the first to third embodiments, to act in the direction of pushing in the optical disc surface, and as in the fourth embodiment, the optical disc surface is pulled. The same effect can be obtained by either method.

以下、本発明を実施例および比較例に基づいてより具体的に説明する。   Hereinafter, the present invention will be described more specifically based on examples and comparative examples.

(実施例1)
実施例1の構成は図5に示すものであって、補助安定化部材6は、ディスクに対向する端面を曲率半径200mmとし、平面視直径40mmの円柱状の形状とした。この補助安定化部材6を、主安定化部材5よりもディスク回転方向上下流側の90度位置で、ディスク対向面の中心がディスクにおける半径45mmの位置となるように一対配置した。
(Example 1)
The configuration of Example 1 is shown in FIG. 5, and the auxiliary stabilizing member 6 has a cylindrical shape with a radius of curvature of 200 mm at the end surface facing the disk and a diameter in plan view of 40 mm. A pair of the auxiliary stabilizing members 6 are arranged so that the center of the disk facing surface is positioned at a radius of 45 mm on the disk at a 90 degree position on the upstream and downstream side of the disk rotation direction with respect to the main stabilizing member 5.

また主安定化部材5は、ディスク半径方向に延在させた形状とし、ディスク対向面の曲率半径をディスク半径方向に渡って半径50mmに一定とし、ディスク円周方向の有効領域幅をディスク半径方向に渡って15mmに一定とした。この主安定化部材5を、その作用面が光ピックアップ4の半径方向における動線Rに対向するように配置した。また、主安定化部材5におけるディスク半径方向の長さは、ディスク半径方向における略20mm〜略60mmの範囲を覆う40mmとした。   The main stabilizing member 5 has a shape extending in the radial direction of the disk, the radius of curvature of the disk facing surface is constant at a radius of 50 mm across the radial direction of the disk, and the effective area width in the circumferential direction of the disk is set in the radial direction of the disk. Over a period of 15 mm. The main stabilizing member 5 is disposed so that the working surface thereof faces the flow line R in the radial direction of the optical pickup 4. Further, the length of the main stabilizing member 5 in the disk radial direction was set to 40 mm covering a range of about 20 mm to about 60 mm in the disk radial direction.

また本実施例では、ディスク部材として直径120mm,厚さ75μmのポリカーボネイト製シートを用い、まず、このシートに、熱転写でスタンパのピッチ0.6μm、幅0.3μmのグルーブを転写し、その後、スパッタリングでシート/Ag反射層 120nm/(ZrO2−Y23)−SiO2 7nm/AgInSbTeGe 10nm/ZnS−SiO2 25nm/Si34 10nmの順番に成膜した。 In this embodiment, a polycarbonate sheet having a diameter of 120 mm and a thickness of 75 μm is used as the disk member. First, a groove having a stamper pitch of 0.6 μm and a width of 0.3 μm is transferred onto the sheet by sputtering, and then sputtering is performed. The film was formed in the order of sheet / Ag reflective layer 120 nm / (ZrO 2 —Y 2 O 3 ) —SiO 2 7 nm / AgInSbTeGe 10 nm / ZnS—SiO 2 25 nm / Si 3 N 4 10 nm.

情報記録領域は内周直径40mmから外周直径118mmまで(半径20mm〜58mm)の範囲に設定した。その後、UV樹脂をスピンコートし、紫外線照射で硬化させて厚さ5μmの透明保護膜を形成した。また、逆側の面には10μm厚のハードコートを施した。なお、このディスク中心部には外形直径30mm,内径直径15mm、厚み0.3mmのハブ2を取り付けた。このディスクの仕上がり状態はハードコート側に僅かに反った形状となった。   The information recording area was set in a range from an inner diameter of 40 mm to an outer diameter of 118 mm (radius 20 mm to 58 mm). Thereafter, a UV resin was spin-coated and cured by ultraviolet irradiation to form a transparent protective film having a thickness of 5 μm. Further, a hard coat having a thickness of 10 μm was applied to the opposite surface. A hub 2 having an outer diameter of 30 mm, an inner diameter of 15 mm, and a thickness of 0.3 mm was attached to the center of the disk. The finished state of the disk was slightly warped to the hard coat side.

前記ディスクを15m/secのディスク回転数で回転させ、その後に、補助安定化部材6をディスク基準面を基準として3mm押し込んだ。なお、ここでのディスク基準面とは、ディスクが理想的に平坦であると仮定した場合の補助安定化部材6側のディスク面のことである。   The disk was rotated at a disk rotational speed of 15 m / sec, and then the auxiliary stabilizing member 6 was pushed in by 3 mm with reference to the disk reference surface. The disc reference surface here is a disc surface on the auxiliary stabilizing member 6 side when the disc is assumed to be ideally flat.

また、補助安定化部材6の移動動作の基準点は、その作用面の中心とした。その後、主安定化部材5をディスク基準面近傍まで近づけた。   Further, the reference point for the movement operation of the auxiliary stabilizing member 6 is the center of the action surface. Thereafter, the main stabilizing member 5 was brought close to the vicinity of the disk reference surface.

この状態において、光ピックアップ4の位置にレーザ変位計を配置して、半径25,40,55mmの各位置においてディスク面ぶれを計測し、ディスク半径方向に渡って、有効かつ均一にディスク面ぶれ低減効果が得られているかを評価した。   In this state, a laser displacement meter is arranged at the position of the optical pickup 4 to measure the disc surface shake at each of the radii of 25, 40, and 55 mm, and the disc surface shake is effectively and uniformly reduced in the disc radial direction. It was evaluated whether an effect was obtained.

(実施例2)
実施例2の構成は図15に示すものであって、補助安定化部材6は、ディスクに対向する端面を曲率半径200mmとし、平面視直径40mmの円柱状の形状とした。この補助安定化部材6を、主安定化部材5よりもディスク回転方向上下流側の90度位置で、ディスク対向面の中心がディスクの半径45mmの位置となるように一対配置した。
(Example 2)
The configuration of Example 2 is shown in FIG. 15, and the auxiliary stabilizing member 6 has a cylindrical shape with a radius of curvature of 200 mm at the end surface facing the disk and a diameter in plan view of 40 mm. A pair of auxiliary stabilizing members 6 are arranged at a 90-degree position on the upstream and downstream sides of the disk rotation direction with respect to the main stabilizing member 5 so that the center of the disk facing surface is positioned at a disk radius of 45 mm.

主安定化部材5は、ディスク半径方向に延在させた形状とし、そのディスク半径方向の断面形状は、図16に示すように、ディスク外周側でのディスク円周方向の有効領域幅Lbが、ディスク内周側での有効領域幅Laよりも小さくなるようにした。また、ディスク円周方向の曲率半径は、ディスク内外周ともRa=Rbと一定になるようにした。   The main stabilizing member 5 has a shape extending in the disk radial direction, and the cross-sectional shape in the disk radial direction has an effective area width Lb in the disk circumferential direction on the disk outer circumferential side as shown in FIG. The effective area width La on the inner circumference side of the disk is made smaller. Also, the radius of curvature in the disk circumferential direction was made constant at Ra = Rb on both the inner and outer circumferences of the disk.

具体的な主安定化部材5の形状は、ディスク半径25mmの位置における有効領域幅を30mm、ディスク半径55mmの位置における有効流域幅を10mmとし、その間は有効領域幅を連続的に変化させ、ディスク円周方向の曲率半径はディスク半径方向全域に渡って50mmに一定とした。   Specifically, the main stabilizing member 5 has an effective area width of 30 mm at a disk radius of 25 mm and an effective flow area width of 10 mm at a disk radius of 55 mm. The radius of curvature in the circumferential direction was constant at 50 mm over the entire disk radial direction.

さらに主安定化部材5は、その作用面が光ピックアップ4における半径方向の動線Rに対向するように配置し、主安定化部材5におけるディスク半径方向長さは、ディスク半径方向における略20mm〜略60mmの領域を覆う40mmとした。   Further, the main stabilizing member 5 is disposed so that its working surface faces the radial flow line R in the optical pickup 4, and the disk radial direction length of the main stabilizing member 5 is about 20 mm to about disk radial direction. It was set to 40 mm covering an area of about 60 mm.

前記構成の実施例2において、実施例1と同様のディスクを用いて同様の評価を実施した。   In Example 2 having the above-described configuration, the same evaluation was performed using the same disk as in Example 1.

(実施例3)
実施例3の構成は図13に示すものであって、補助安定化部材6は、ディスクに対向する端面を曲率半径200mmとし、平面視直径40mmの円柱状の形状とした。この補助安定化部材6を、主安定化部材5よりもディスク回転方向上下流側の90度位置で、ディスク対向面の中心がディスクの半径45mmの位置となるように一対配置した。
(Example 3)
The configuration of Example 3 is shown in FIG. 13, and the auxiliary stabilizing member 6 has a cylindrical shape with a radius of curvature of 200 mm at the end surface facing the disk and a diameter in plan view of 40 mm. A pair of auxiliary stabilizing members 6 are arranged at a 90-degree position on the upstream and downstream sides of the disk rotation direction with respect to the main stabilizing member 5 so that the center of the disk facing surface is positioned at a disk radius of 45 mm.

主安定化部材5は、ディスク半径方向に延在させた形状とし、そのディスク半径方向の断面形状は、図14に示すように、ディスク外周部での曲率半径Rbがディスク内周部の曲率半径Raよりも小さくなるようにし、ディスク円周方向の有効領域幅を、ディスク内外周ともLa=Lbと一定になるようにした。   The main stabilizing member 5 has a shape extending in the disk radial direction, and the cross-sectional shape in the disk radial direction is such that the radius of curvature Rb at the outer periphery of the disk is the radius of curvature of the inner periphery of the disk as shown in FIG. The effective area width in the disk circumferential direction was made constant at La = Lb on both the inner and outer circumferences of the disk.

具体的な主安定化部材5の形状は、ディスク半径25mmの位置における曲率半径を100mm、ディスク半径55mmの位置における曲率半径を50mmとし、その間は曲率半径を連続的に変化させ、ディスク円周方向の有効領域幅はディスク半径方向全体に渡って15mmに一定とした。   The specific shape of the main stabilizing member 5 is such that the radius of curvature at the position of the disk radius of 25 mm is 100 mm and the radius of curvature at the position of the disk radius of 55 mm is 50 mm. The effective area width is constant at 15 mm over the entire disk radial direction.

さらに主安定化部材5は、その作用面が光ピックアップ4における半径方向の動線Rに対向するように配置した。主安定化部材5のディスク半径方向長さは、ディスク半径方向における略20mm〜略60mmの領域を覆う40mmとした。   Further, the main stabilizing member 5 is arranged so that its action surface faces the radial flow line R in the optical pickup 4. The length of the main stabilizing member 5 in the radial direction of the disc was set to 40 mm covering an area of about 20 mm to about 60 mm in the radial direction of the disc.

前記構成の実施例3において、実施例1と同様のディスクを用いて同様の評価を実施した。   In Example 3 having the above-described configuration, the same evaluation was performed using the same disk as in Example 1.

(実施例4)
実施例4の構成は図11に示すものであって、補助安定化部材8は、図示するようにディスクを覆う半円状の平板とした。この補助安定化部材8を、主安定化部材5よりもディスク回転方向上下流側の90度位置を中心として、ディスクの外周端を覆うように一対配置した。この際、補助安定化部材8は図示する方向に8度傾けてディスク面に作用させた。
(Example 4)
The configuration of Example 4 is as shown in FIG. 11, and the auxiliary stabilizing member 8 is a semicircular flat plate covering the disk as shown. A pair of auxiliary stabilizing members 8 are arranged so as to cover the outer peripheral edge of the disc with the 90-degree position on the upstream and downstream sides in the disc rotation direction as compared with the main stabilizing member 5. At this time, the auxiliary stabilizing member 8 was tilted by 8 degrees in the direction shown in the figure and acted on the disk surface.

主安定化部材5は、ディスク半径方向に延在させた形状とし、そのディスク半径方向の断面形状は、図14に示すように、ディスク外周部での曲率半径Rbがディスク内周部の曲率半径Raよりも小さくなるようにし、ディスク円周方向の有効領域幅は、内外周ともLa=Lbと一定になるようにした。   The main stabilizing member 5 has a shape extending in the disk radial direction, and the cross-sectional shape in the disk radial direction is such that the radius of curvature Rb at the outer periphery of the disk is the radius of curvature of the inner periphery of the disk as shown in FIG. The effective area width in the disk circumferential direction was made constant at La = Lb on both the inner and outer circumferences.

具体的な主安定化部材5の形状は、ディスク半径25mmの位置における曲率半径を100mm、ディスク半径55mmの位置における曲率半径を50mmとし、その間は曲率半径を連続的に変化させ、ディスク円周方向の有効領域幅はディスク半径方向に渡って15mm一定とした。   The specific shape of the main stabilizing member 5 is such that the radius of curvature at the position of the disk radius of 25 mm is 100 mm and the radius of curvature at the position of the disk radius of 55 mm is 50 mm. The effective area width was set to 15 mm constant in the radial direction of the disk.

さらに、主安定化部材5は、その作用面が光ピックアップ4における半径方向の動線Rに対向するように配置し、ディスク半径方向長さは、ディスク半径方向における略20mm〜略60mmの領域を覆う40mmとした。   Further, the main stabilizing member 5 is disposed so that its working surface faces the flow line R in the radial direction of the optical pickup 4, and the length in the radial direction of the disk ranges from about 20 mm to about 60 mm in the radial direction of the disk. Covering 40 mm.

前記構成の実施形態4において、実施例1と同様のディスクを用いて同様の評価を実施した。   In Embodiment 4 having the above-described configuration, the same evaluation was performed using the same disk as in Example 1.

(実施例5)
実施例5の構成は図9に示すものであって、補助安定化部材6は、ディスクに対向する端面を曲率半径200mmとし、平面視直径40mmの円柱状の形状とした。この補助安定化部材6を、主安定化部材5のディスク回転方向上下流にそれぞれ1つずつ、ハブ2の径によって決められる領域Cの主安定化部材5寄りの範囲で、主安定化部材5側の境界から2mm内側の位置に配置(補助安定化部材6の曲面の中心をこの位置に合わせた)し、その押し込み量はディスク基準面を基準として3mmに設定した。
(Example 5)
The configuration of Example 5 is shown in FIG. 9, and the auxiliary stabilizing member 6 has a cylindrical shape with a radius of curvature of 200 mm at the end surface facing the disk and a diameter in plan view of 40 mm. The auxiliary stabilizing members 6 are arranged in the vicinity of the main stabilizing member 5 in the region C determined by the diameter of the hub 2, one by one upstream and downstream of the main stabilizing member 5 in the disk rotation direction. It was arranged at a position 2 mm inside from the boundary on the side (the center of the curved surface of the auxiliary stabilizing member 6 was adjusted to this position), and the pushing amount was set to 3 mm with reference to the disk reference surface.

さらに両補助安定化部材6は、光ピックアップ4の動線Rを挟んで対象となるようにし、この動線Rからの距離は45mmとした。この構成により、後述の評価において、補助安定化部材6をディスク面に3mm押し込んだ場合の補助安定化部材6とディスクの近接点は、領域C内の主安定化部材5よりの境界線付近に設定される。   Further, both auxiliary stabilizing members 6 are targeted with the flow line R of the optical pickup 4 in between, and the distance from the flow line R is 45 mm. With this configuration, in the evaluation described later, when the auxiliary stabilizing member 6 is pushed into the disk surface by 3 mm, the proximity point between the auxiliary stabilizing member 6 and the disk is in the vicinity of the boundary line from the main stabilizing member 5 in the region C. Is set.

主安定化部材5は、ディスク半径方向に延在させた形状とし、そのディスク半径方向の断面形状は、図16に示すように、ディスク外周側でのディスク円周方向の有効領域幅Lbが、ディスク内周側での有効領域幅Laよりも小さくなるようにした。また、ディスク円周方向の曲率半径は、内外周ともRa=Rbと一定になるようにした。   The main stabilizing member 5 has a shape extending in the disk radial direction, and the cross-sectional shape in the disk radial direction has an effective area width Lb in the disk circumferential direction on the disk outer circumferential side as shown in FIG. The effective area width La on the inner circumference side of the disk is made smaller. Further, the radius of curvature in the disk circumferential direction was made constant at Ra = Rb for both the inner and outer circumferences.

具体的な主安定化部材5の形状は、ディスク半径25mmの位置における有効領域幅を30mm、ディスク半径55mmの位置における有効流域幅を10mmとし、その間は有効領域幅を連続的に変化させ、ディスク円周方向の曲率半径はディスク半径方向に渡って50mmと一定にした。   Specifically, the main stabilizing member 5 has an effective area width of 30 mm at a disk radius of 25 mm and an effective flow area width of 10 mm at a disk radius of 55 mm. The radius of curvature in the circumferential direction was kept constant at 50 mm over the disk radial direction.

また主安定化部材5は、その作用面が光ピックアップ4における半径方向の動線Rに対向するように配置し、主安定化部材5におけるディスク半径方向長さは、ディスク半径方向における略20mm〜略60mmの領域を覆う40mmとした。   The main stabilizing member 5 is arranged so that its working surface faces the radial flow line R in the optical pickup 4, and the disk radial direction length of the main stabilizing member 5 is about 20 mm to about 20 mm in the disk radial direction. It was set to 40 mm covering an area of about 60 mm.

前記構成の実施例5において、実施例1と同様のディスクを用いて同様の評価を実施した。   In Example 5 having the above-described configuration, the same evaluation was performed using the same disk as in Example 1.

(実施例6)
実施例6の構成は、図7,図8に示すものであって、補助安定化部材6は、光ディスク1に対向する端面を曲率半径500mmとし、平面視直径40mmの円柱状の形状とした。主安定化部材5は実施例5と同様とした。補助安定化部材6は、主安定化部材5よりもディスク回転方向上下流側の90度位置で、ディスク対向面の中心がディスクの半径40mmの位置となるように配置した。また、補助安定化部材6のディスク回転軸方向位置はディスク基準面から0.5mm離れた位置に設定した。
(Example 6)
The configuration of Example 6 is as shown in FIGS. 7 and 8. The auxiliary stabilizing member 6 has a cylindrical shape with a radius of curvature of 500 mm at the end surface facing the optical disc 1 and a diameter in plan view of 40 mm. The main stabilizing member 5 was the same as in Example 5. The auxiliary stabilizing member 6 was disposed at a 90 degree position on the upstream and downstream sides in the disk rotation direction with respect to the main stabilizing member 5 so that the center of the disk facing surface was positioned at a disk radius of 40 mm. The position of the auxiliary stabilizing member 6 in the disc rotation axis direction was set at a position 0.5 mm away from the disc reference plane.

前記構成の実施例6において、実施例1と同様のディスクを用いて同様の評価を実施した。   In Example 6 having the above-described configuration, the same evaluation was performed using the same disk as in Example 1.

(比較例1)
比較例1の構成は図23,図24に示すものであって、円筒状の主安定化部材5を1つだけ用いた構成である。主安定化部材5は、ディスクに対向する端面を曲率半径100mmとし、平面視直径10mmの円柱状の形状とした。
(Comparative Example 1)
The configuration of Comparative Example 1 is shown in FIGS. 23 and 24, and uses only one cylindrical main stabilizing member 5. The main stabilizing member 5 has a cylindrical shape with a radius of curvature of 100 mm at the end surface facing the disk and a diameter in plan view of 10 mm.

なお、ここでは、説明するための必要最小限の構成を図示するに留め、詳細な機構制御系などは図示しないが、主安定化部材5にはディスク半径方向の移動機構とディスク回転軸方向の位置制御機構を具備させた。   Here, only the minimum necessary configuration for explanation is shown, and a detailed mechanism control system and the like are not shown. However, the main stabilizing member 5 includes a moving mechanism in the disk radial direction and a disk rotating shaft direction. A position control mechanism was provided.

前記構成の比較例1において、実施例1と同様のディスクを15m/secのディスク回転数で回転させた。その後、主安定化部材5を、その作用面がディスク基準面近傍となるように配置して、ディスク半径方向を移動させ、25mm,40mm,55mmの各ディスク半径位置において、光ピックアップ4の位置に配置したレーザ変位計によってディスク面ぶれを計測した。   In Comparative Example 1 having the above-described configuration, the same disk as in Example 1 was rotated at a disk rotational speed of 15 m / sec. After that, the main stabilizing member 5 is arranged so that its working surface is in the vicinity of the disk reference surface, and is moved in the disk radial direction. At each disk radial position of 25 mm, 40 mm, and 55 mm, the main stabilizing member 5 is positioned at the position of the optical pickup 4. The disc deflection was measured with the laser displacement meter.

なお、図23,図24においては、主安定化部材5をディスク基準面に対して押し込んだ例を示してあるが、本比較例はこの押し込み量を零とした場合の例である。   23 and 24 show an example in which the main stabilizing member 5 is pushed into the disk reference surface, but this comparative example is an example in which the pushing amount is zero.

(比較例2)
比較例2の構成は、比較例1と同様に円筒状の主安定化部材5を1つだけ用いたものである。主安定化部材5は、ディスクに対向する端面を曲率半径100mmとし、平面視直径10mmの円柱状の形状とした。
(Comparative Example 2)
The configuration of Comparative Example 2 uses only one cylindrical main stabilizing member 5 as in Comparative Example 1. The main stabilizing member 5 has a cylindrical shape with a radius of curvature of 100 mm at the end surface facing the disk and a diameter in plan view of 10 mm.

比較例1と同様に、説明するための必要最小限の構成を図示するに留め、詳細な機構制御系などは図示しないが、主安定化部材5にはディスク半径方向の移動機構とディスク回転軸方向の位置制御機構を具備させた。   As in the first comparative example, only the minimum necessary configuration for explanation is shown, and a detailed mechanism control system and the like are not shown. However, the main stabilizing member 5 includes a moving mechanism in the disk radial direction and a disk rotating shaft. A directional position control mechanism was provided.

前記構成の比較例2において、実施例1と同様のディスクを15m/secのディスク回転数で回転させた。その後、主安定化部材5をディスク面に対して押し込み、かつディスク半径及び円周方向のチルト制御を行って、光ピックアップ位置でのディスク面ぶれが最小となるように調整した。この動作を25mm,40mm,55mmの各ディスク半径位置において実施し、光ピックアップ4の位置に配置したレーザ変位計によってディスク面ぶれを計測した。この測定範囲におけるディスク面ぶれを最小にするための主安定化部材5の押し込み調整量は1〜3mm(ディスク基準面を原点として)、チルト調整量は半径方向3〜6度、円周方向1〜2度(回転軸方向を原点として)であった。   In Comparative Example 2 having the above-described configuration, the same disk as in Example 1 was rotated at a disk rotational speed of 15 m / sec. Thereafter, the main stabilizing member 5 was pushed into the disk surface, and tilt control in the disk radius and circumferential direction was performed to adjust the disk surface shake at the optical pickup position to a minimum. This operation was performed at each disk radial position of 25 mm, 40 mm, and 55 mm, and the disk surface shake was measured by a laser displacement meter disposed at the position of the optical pickup 4. The amount by which the main stabilizing member 5 is pushed to minimize the disc surface fluctuation in this measurement range is 1 to 3 mm (with the disc reference surface as the origin), the amount of tilt adjustment is 3 to 6 degrees in the radial direction, and 1 in the circumferential direction. It was ˜2 degrees (with the rotation axis direction as the origin).

本実施例と比較例において、各半径位置でのディスク面ぶれは、図25に示す通りとなった。この結果に示すように、本実施例では、主安定化部材5が存在するディスク半径方向全体に渡って良好なディスク面ぶれ低減効果を得ることができた。すなわち、ディスク半径方向に渡るこれら効果が、ディスクと安定化部材の位置関係を規定するだけで得られており、主安定化部材5に対して何ら複雑な機構を持たせることなく、また何ら複雑な動作を行わせることなく、ディスク半径方向に渡って良好なディスク面ぶれ安定状態が得られた。   In this example and the comparative example, the disc surface fluctuation at each radial position was as shown in FIG. As shown in this result, in this example, it was possible to obtain a good disk surface shake reduction effect over the entire disk radial direction in which the main stabilizing member 5 exists. That is, these effects in the radial direction of the disk are obtained only by defining the positional relationship between the disk and the stabilizing member, and the main stabilizing member 5 has no complicated mechanism and is not complicated. A good disk surface wobbling stability was obtained in the radial direction of the disk without performing any proper operation.

例えば比較例1は、円筒状の主安定化部材5を一つだけ用いた場合に、主安定化部材5の動作機構の簡略化を優先させた場合の一例であるが、主安定化部材5はディスク面ぶれ低減の効果をほとんど奏することができていない。本実施例においては、この比較例よりも安定化部材の動作機構を簡略化した上で、かつディスク半径方向に渡るディスク面ぶれ低減効果を確保できており、その効果は絶大である。   For example, Comparative Example 1 is an example in which simplification of the operation mechanism of the main stabilization member 5 is prioritized when only one cylindrical main stabilization member 5 is used. Has almost no effect of reducing the disk surface shake. In this embodiment, the operation mechanism of the stabilizing member is simplified as compared with this comparative example, and the effect of reducing the disk surface blurring in the disk radial direction can be ensured, and the effect is great.

一方、比較例2は、主安定化部材5のディスク面に対する押し込み量の制御と、主安定化部材5における半径および円周方向のチルト制御を駆使して、光ピックアップ位置でのディスク面ぶれを最小化した例であり、ディスク半径方向に渡ってのディスク面ぶれを十分に低減することはできているが、その調整機構および調整方法は既述したように非常に複雑であった。この例との比較においても本実施例の簡略化した機構系の効果が絶大であるといえる。   On the other hand, the comparative example 2 uses the control of the pushing amount of the main stabilizing member 5 with respect to the disk surface and the tilt control in the radial and circumferential directions of the main stabilizing member 5 to cause the disk surface shake at the optical pickup position. This is a minimized example, and the disc surface fluctuation in the radial direction of the disc can be sufficiently reduced, but the adjustment mechanism and adjustment method are very complicated as described above. Even in comparison with this example, it can be said that the effect of the simplified mechanical system of the present embodiment is enormous.

また、実施例1と実施例2〜6を比較すると、後者の実施例の方が、ディスク半径方向のディスク面ぶれ低減効果が均一なことが伺える。これは、ディスク半径方向に延在させた主安定化部材5における作用表面の形状によるものである。   Further, comparing Example 1 and Examples 2 to 6, it can be seen that the latter example has a more uniform disk surface shake reduction effect in the disk radial direction. This is due to the shape of the working surface of the main stabilization member 5 extending in the disk radial direction.

特に実施例5においては、他の実施例と比較して、最も良好なディスク面ぶれ低減効果を得ることができている。これは補助安定化ガイド5の配置位置構成によるものである。   In particular, in the fifth embodiment, the best disk surface blurring reduction effect can be obtained as compared with the other embodiments. This is due to the arrangement position of the auxiliary stabilization guide 5.

一方、既述したディスク仕様のうち、ハードコート膜厚を0〜20μmの間で適宜選択して設定し、かつディスクの反りの状態を主安定化部材側に対して凸から凹形状に変化するようにして、ディスク仕様を変化させたサンプルを準備した。また、該ディスク仕様を基準として、ディスク部材となるポリカーボネイトの膜厚を50〜120μmの間で適宜選択して設定したサンプルを準備した。   On the other hand, among the disk specifications described above, the hard coat film thickness is appropriately selected and set between 0 to 20 μm, and the warp state of the disk changes from convex to concave with respect to the main stabilizing member side. In this way, samples with different disk specifications were prepared. Further, a sample was prepared in which the film thickness of polycarbonate serving as a disk member was appropriately selected and set between 50 to 120 μm based on the disk specifications.

これら、各種ディスクの仕様の変化に関係なく、実施例2の補助安定化部材6と主安定化部材5の構成により、いずれのディスク仕様においても先と同様の結果が得られた。なお、補助安定化部材のディスク回転軸方向の位置は、各ディスクの反りの状態に応じて適宜調整した。   Regardless of changes in the specifications of these various discs, the same results as before were obtained in any of the disc specifications by the configurations of the auxiliary stabilizing member 6 and the main stabilizing member 5 of Example 2. The position of the auxiliary stabilizing member in the disc rotation axis direction was adjusted as appropriate according to the warpage of each disc.

このような補助安定化部材に対する適正な条件調整は、ディスク仕様ごとに異なったが、図20に示すように、補助安定化部材6をディスクカートリッジ内壁に具備させ、収納するディスク仕様ごとにディスクカートリッジ内壁の補助安定化部材の配置条件を調整することにより、記録/再生装置側の構成設計においてディスク仕様を意識せずとも、所望の条件でディスク面ぶれを低減することができる。   Appropriate condition adjustment for such an auxiliary stabilizing member is different for each disk specification. However, as shown in FIG. 20, the auxiliary stabilizing member 6 is provided on the inner wall of the disk cartridge, and the disk cartridge is stored for each disk specification to be stored. By adjusting the arrangement condition of the auxiliary stabilizing member on the inner wall, the disc surface shake can be reduced under desired conditions without being aware of the disc specifications in the configuration design on the recording / reproducing apparatus side.

また、任意のディスク仕様においては、ディスク半径方向のディスク面ぶれ低減効果に若干のばらつきが見られる場合もあったが、ディスク仕様に応じて、主安定化部材の表面形状、あるいは配置位置を調整することにより、均一化することができた。例えば、これら安定化部材の配置条件の調整においては、ディスクカートリッジを安定化部材の位置を調整して配設可能な構造としておくことにより、容易に対応することができた。   In addition, there was a slight variation in the disc surface blurring reduction effect in the disc radial direction in any disc specification. However, the surface shape or position of the main stabilization member was adjusted according to the disc specification. It was possible to make uniform. For example, the adjustment of the arrangement conditions of these stabilizing members can be easily handled by making the disk cartridge a structure that can be arranged by adjusting the position of the stabilizing member.

あるいは、このディスクカートリッジの生産にあたっては、この成形用金型の安定化部材成形部位をディスク仕様に応じて移動できるようにしておくことにより、金型代のコストを増大させることなく、各種ディスクの仕様に対応したディスクカートリッジを製作することができる。   Alternatively, in the production of this disk cartridge, by stabilizing the molding part of the molding die so that it can be moved in accordance with the disk specifications, various types of disks can be manufactured without increasing the cost of the mold. A disc cartridge corresponding to the specification can be manufactured.

このように、本実施形態,本実施例では、可撓性を有する光ディスクに対してベルヌーイ効果を作用させる安定化部材の簡易な制御により、光ディスクの記録/再生位置におけるディスク面ぶれを低減させることができ、さらに、この制御に伴う記録/再生ヘッドである光ピックアップの記録/再生位置への位置調整を容易に行うことが可能にすることができる。   As described above, in the present embodiment and the present example, the disc surface shake at the recording / reproducing position of the optical disc can be reduced by the simple control of the stabilizing member that causes the Bernoulli effect to act on the flexible optical disc. In addition, it is possible to easily adjust the position of the optical pickup, which is a recording / reproducing head, associated with this control to the recording / reproducing position.

本発明は、可撓性を有する記録ディスクに対して記録および/または再生処理を行う記録/再生装置、およびその記録ディスクを収納するディスクカートリッジに適用され、本発明が対象とする記録ディスクは、相変化メモリ,光磁気メモリ,ホログラムメモリなどのディスク状の記録ディスクで活用するものすべてを対象とする。   The present invention is applied to a recording / reproducing apparatus that performs recording and / or reproducing processing on a flexible recording disk, and a disk cartridge that houses the recording disk. This is intended for all disk-type recording disks such as phase change memory, magneto-optical memory, and hologram memory.

本発明の記録/再生装置の実施形態1を説明するための要部の平面図The top view of the principal part for demonstrating Embodiment 1 of the recording / reproducing apparatus of this invention 図1の実施形態1の正面図Front view of Embodiment 1 of FIG. 本発明の記録/再生装置の実施形態2を説明するための要部の平面図The top view of the principal part for demonstrating Embodiment 2 of the recording / reproducing apparatus of this invention 図3の実施形態2の正面図Front view of Embodiment 2 of FIG. 本発明の記録/再生装置の実施形態3を説明するための要部の平面図The top view of the principal part for demonstrating Embodiment 3 of the recording / reproducing apparatus of this invention 図5の実施形態3の正面図Front view of Embodiment 3 of FIG. 本発明の記録/再生装置の実施形態4を説明するための要部の平面図The top view of the principal part for describing Embodiment 4 of the recording / reproducing apparatus of this invention 図7の実施形態4の正面図FIG. 7 is a front view of the fourth embodiment. 本発明の記録/再生装置の実施形態3の変形例を説明するための要部の平面図The top view of the principal part for demonstrating the modification of Embodiment 3 of the recording / reproducing apparatus of this invention 図9の実施形態3の変形例の正面図The front view of the modification of Embodiment 3 of FIG. 本発明の記録/再生装置の実施形態5を説明するための要部の平面図The top view of the principal part for demonstrating Embodiment 5 of the recording / reproducing apparatus of this invention 図11の実施形態5の正面図The front view of Embodiment 5 of FIG. 本発明の記録/再生装置の実施形態6を説明するための要部の平面図The top view of the principal part for describing Embodiment 6 of the recording / reproducing apparatus of this invention 図13の実施形態6における安定化部材の断面図Sectional drawing of the stabilization member in Embodiment 6 of FIG. 本発明の記録/再生装置の実施形態7を説明するための要部の平面図The top view of the principal part for demonstrating Embodiment 7 of the recording / reproducing apparatus of this invention 図15の実施形態7における安定化部材の断面図Sectional drawing of the stabilization member in Embodiment 7 of FIG. 本発明の記録/再生装置の実施形態8を説明するための要部の平面図The top view of the principal part for describing Embodiment 8 of the recording / reproducing apparatus of this invention 図17の実施形態8における安定化部材の断面図Sectional drawing of the stabilization member in Embodiment 8 of FIG. 本実施形態の記録/再生装置における補助安定化部材の設置例を示す断面図Sectional drawing which shows the example of installation of the auxiliary stabilization member in the recording / reproducing apparatus of this embodiment 本発明の実施形態であるディスクカートリッジを説明するための断面図Sectional drawing for demonstrating the disc cartridge which is embodiment of this invention 本実施形態のディスクカートリッジの平面図Plan view of the disk cartridge of this embodiment 図21のディスクカートリッジの横断面図FIG. 21 is a cross-sectional view of the disk cartridge of FIG. 本発明の実施例との比較例における構成を説明するための平面図The top view for demonstrating the structure in the comparative example with the Example of this invention. 図23の比較例の正面図Front view of the comparative example of FIG. 本発明の実施例と比較例とにおける特性評価の一覧を示す図The figure which shows the list of the characteristic evaluation in the Example and comparative example of this invention

符号の説明Explanation of symbols

1 光ディスク
2 ハブ
3 スピンドルモータ
4 光ピックアップ
5 主安定化部材
6,8 副安定化部材
10 装置本体の筺体
11 ディスクカートリッジ
A 光ピックアップ動線の延長線
B1,B2 ハブの周部を通り直線Aに垂直な直線
R 動線
S1,S2,C 記録ディスクの面内において区分した領域
La,Lb 安定化部材の幅
Ra,Rb 安定化部材の曲率半径
DESCRIPTION OF SYMBOLS 1 Optical disk 2 Hub 3 Spindle motor 4 Optical pick-up 5 Main stabilization member 6,8 Substabilization member 10 Housing | casing 11 of an apparatus main body Disk cartridge A Extension line B1, B2 of optical pick-up flow line Straight line A passes through the peripheral part of a hub Vertical straight line R Flow line S1, S2, C Areas La and Lb divided in the plane of the recording disk Ra and Rb Stabilizing member radius of curvature

Claims (15)

可撓性を有する記録ディスクを回転させ、ベルヌーイ効果を利用して少なくとも記録/再生位置付近における前記記録ディスクの面ぶれを抑制する主安定化部材と、前記記録ディスクの主たるベルヌーイ効果の作用面とは逆の面において記録および/または再生を行う記録/再生手段とを備えた記録/再生装置において、
前記記録ディスクの面内を、前記記録/再生手段が走査する動線に近接し、かつ該記録ディスクの中心付近を通る直線Aによって2つの領域に分け、該領域の少なくとも一方に、空気力学的な作用力を発生させて、前記主安定化部材が位置する前記記録ディスク面において前記主安定化部材を作用させた場合に発生するディスク面の対抗力が大きくなるように補助安定化部材を配設し、さらに前記主安定化部材を、前記記録/再生手段のディスク半径方向の走査動線に対向して延在させたことを特徴とする記録/再生装置。
A main stabilizing member that rotates a recording disk having flexibility and uses the Bernoulli effect to suppress surface blurring of the recording disk at least in the vicinity of the recording / reproducing position; and a working surface of the main Bernoulli effect of the recording disk; Is a recording / reproducing apparatus comprising recording / reproducing means for recording and / or reproducing on the opposite side,
The surface of the recording disk is divided into two areas by a straight line A that is close to the flow line that the recording / reproducing means scans and passes through the vicinity of the center of the recording disk. The auxiliary stabilizing member is arranged so that the opposing force of the disc surface generated when the main stabilizing member is applied to the surface of the recording disk on which the main stabilizing member is located increases. The recording / reproducing apparatus is further characterized in that the main stabilizing member extends opposite to the scanning flow line in the disk radial direction of the recording / reproducing means.
前記2つの領域のうち、前記記録/再生手段に対してディスク回転方向の下流側に位置する領域に、前記補助安定化部材を少なくとも1つ配設したことを特徴とする請求項1記載の記録/再生装置。   2. The recording according to claim 1, wherein at least one of the auxiliary stabilizing members is disposed in an area located downstream of the recording / reproducing means in the disk rotation direction among the two areas. / Playback device. 前記2つの領域のうち、前記記録/再生手段に対してディスク回転方向の上流側に位置する領域に、前記補助安定化部材を少なくとも1つ配設したことを特徴とする請求項1記載の記録/再生装置。   2. The recording according to claim 1, wherein at least one of the auxiliary stabilizing members is disposed in an area located upstream of the recording / reproducing means in the disk rotation direction among the two areas. / Playback device. 前記2つの領域のそれぞれに、前記補助安定化部材を少なくとも1つずつ配設したことを特徴とする請求項1記載の記録/再生装置。   2. The recording / reproducing apparatus according to claim 1, wherein at least one auxiliary stabilizing member is disposed in each of the two areas. 前記記録ディスクの回転中心部分を保持部材に保持させたときに、該記録ディスクにおける前記主安定化部材側を押して撓ませた場合に撓みが始まる支点位置を結んだ周部に対して、前記記録ディスクの中心付近を通る直線Aが交差する2点を通り、かつ前記直線Aに垂直な2つの直線B1,B2における前記主安定化部材に近い側の直線B1と遠い側の直線B2とにより挟まれた前記記録ディスク面上の領域に、前記補助安定化部材による前記記録ディスクに対する力の作用点の位置を設定したことを特徴とする請求項1〜4いずれか1項に記載の記録/再生装置。   When the rotation center portion of the recording disk is held by a holding member, the recording disk is connected to the peripheral portion connecting the fulcrum positions where the deflection starts when the main stabilizing member side of the recording disk is pushed and bent. The straight line A passing near the center of the disk passes through two intersecting points and is sandwiched between the straight line B1 near the main stabilizing member and the straight line B2 farther in the two straight lines B1 and B2 perpendicular to the straight line A. 5. The recording / reproducing method according to claim 1, wherein a position of an action point of a force applied to the recording disk by the auxiliary stabilizing member is set in a region on the surface of the recording disk. apparatus. 前記記録ディスクの回転中心部分を保持部材に保持させたときに、該記録ディスクにおいて前記主安定化部材側を押して撓ませた場合に撓みが始まる支点位置を結んだ周部に対して、前記記録ディスクの中心付近を通る直線Aが交差する2点を通り、かつ前記直線に垂直な2つの直線B1,B2における前記主安定化部材に近い側の直線B1と遠い側の直線B2とにより挟まれた前記記録ディスク面上の領域内の前記直線B1の近傍に、前記補助安定化部材によるディスクに対する力の作用点の位置を設定したことを特徴とする請求項4記載の記録/再生装置。   When the rotation center portion of the recording disk is held by a holding member, the recording disk is connected to the peripheral portion connecting the fulcrum positions where the deflection starts when the main stabilizing member side is pushed and bent on the recording disk. A straight line A passing through the center of the disk passes through two intersecting points, and is sandwiched between a straight line B1 closer to the main stabilizing member and a far straight line B2 in two straight lines B1 and B2 perpendicular to the straight line. 5. The recording / reproducing apparatus according to claim 4, wherein the position of the point of application of force to the disk by the auxiliary stabilizing member is set in the vicinity of the straight line B1 in the area on the recording disk surface. 前記2つの領域にそれぞれ存在する少なくとも1つずつの前記補助安定化部材が対をなし、かつ該補助安定化部材による前記記録ディスク面に対する力の作用点が前記直線B1あるいはB2の平行線上に位置するように設定したことを特徴とする請求項4記載の記録/再生装置。   At least one auxiliary stabilizing member present in each of the two regions forms a pair, and the point of action of the force on the recording disk surface by the auxiliary stabilizing member is located on the parallel line of the straight line B1 or B2. 5. The recording / reproducing apparatus according to claim 4, wherein the recording / reproducing apparatus is set to do so. 前記主安定化部材と補助安定化部材とを装置本体における筐体に設置したことを特徴とする請求項1〜7いずれか1項に記載の記録/再生装置。   The recording / reproducing apparatus according to claim 1, wherein the main stabilizing member and the auxiliary stabilizing member are installed in a housing in the apparatus main body. 前記主安定化部材における前記記録ディスクに対向する面のディスク円周方向の形状を円近似してなる曲線の曲率半径を、ディスク内周から外周方向にかけて小さくなるように設定したことを特徴とする1,5,6または8記載の記録/再生装置。   The curvature radius of a curve obtained by circularly approximating the shape of the surface of the main stabilizing member facing the recording disk in a circular direction is set so as to decrease from the inner periphery to the outer periphery. The recording / reproducing apparatus according to 1, 5, 6 or 8. 前記主安定化部材におけるディスク円周方向の有効領域幅を、ディスク内周から外周方向にかけて小さくなるように設定したことを特徴とする1,5,6または8記載の記録/再生装置。   9. The recording / reproducing apparatus according to 1, 5, 6 or 8, wherein an effective area width in the disk circumferential direction of the main stabilizing member is set so as to decrease from the inner circumference to the outer circumference. 前記安定化部材における前記記録ディスクに対向する面のディスク円周方向の形状を円近似してなる曲線の曲率半径を、ディスク内周から外周方向にかけて小さくなるように設定すると共に、該安定化部材におけるディスク円周方向の有効領域幅を、ディスク内周から外周方向にかけて小さくなるように設定したことを特徴とする1,5,6または8記載の記録/再生装置。   A curvature radius of a curve obtained by circularly approximating the shape of the surface of the stabilization member facing the recording disk in a circular direction is set so as to decrease from the inner periphery of the disk to the outer periphery, and the stabilization member 9. The recording / reproducing apparatus according to claim 1, wherein the effective area width in the disk circumferential direction is set to become smaller from the inner circumference to the outer circumference of the disk. 内部に収納された可撓性を有する記録ディスクの回転時、ベルヌーイ効果を利用して少なくとも記録/再生位置付近における前記記録ディスクの面ぶれを抑制する主安定化部材と、前記記録ディスクの面内を、前記記録/再生手段が走査する動線に近接し、かつ該記録ディスクの中心付近を通る直線Aによって2つの領域に分け、該領域の少なくとも一方に、空気力学的な作用力を発生させて、前記主安定化部材が位置する前記記録ディスク面において前記主安定化部材に対向する作用力を発生させる補助安定化部材とが作用する構成のディスクカートリッジであって、
前記主安定化部材を、前記記録/再生手段のディスク半径方向の走査動線に対向して延在するようにカートリッジ内壁に設けたことを特徴とするディスクカートリッジ。
A main stabilizing member that suppresses the wobbling of the recording disk at least in the vicinity of the recording / reproducing position by utilizing the Bernoulli effect during rotation of the flexible recording disk housed therein; and an in-plane of the recording disk Is divided into two areas by a straight line A that is close to the flow line scanned by the recording / reproducing means and passes near the center of the recording disk, and generates an aerodynamic force in at least one of the areas. A disk cartridge having a configuration in which an auxiliary stabilizing member that generates an acting force facing the main stabilizing member acts on the recording disk surface on which the main stabilizing member is located,
3. A disk cartridge according to claim 1, wherein the main stabilizing member is provided on the inner wall of the cartridge so as to extend opposite to a scanning flow line in the disk radial direction of the recording / reproducing means.
内部に収納された可撓性を有する記録ディスクの回転時、記録/再生手段のディスク半径方向の走査動線に対向して延在し、ベルヌーイ効果を利用して少なくとも記録/再生位置付近における前記記録ディスクの面ぶれを抑制する主安定化部材が作用する構成のディスクカートリッジであって、
前記記録ディスクの面内を、記録/再生装置側に設けられた記録/再生手段が走査する動線に近接し、かつ該記録ディスクの中心付近を通る直線Aによって2つの領域に分け、該領域の少なくとも一方に、空気力学的な作用力を発生させて、前記主安定化部材が位置する前記記録ディスク面において前記主安定化部材を作用させた場合に発生するディスク面の対抗力が大きくなるように補助安定化部材をカートリッジ内壁に設けたことを特徴とするディスクカートリッジ。
When the flexible recording disk accommodated therein rotates, the recording / reproducing means extends opposite to the scanning flow line in the radial direction of the disk and utilizes the Bernoulli effect at least near the recording / reproducing position. A disk cartridge having a configuration in which a main stabilizing member that suppresses surface blur of a recording disk acts,
The surface of the recording disk is divided into two areas by a straight line A that is close to the flow line scanned by the recording / reproducing means provided on the recording / reproducing apparatus side and passes near the center of the recording disk. When the main stabilizing member is applied to at least one of the recording disk surfaces on which the main stabilizing member is located by generating an aerodynamic acting force, the counter force on the disk surface is increased. An auxiliary stabilizing member is provided on the inner wall of the cartridge as described above.
可撓性を有する記録ディスクが収納され、該記録ディスクの回転時、ベルヌーイ効果を利用して少なくとも記録/再生位置付近における前記記録ディスクの面ぶれを抑制する主安定化部材を備えたディスクカートリッジにおいて、
前記主安定化部材を、前記記録/再生手段のディスク半径方向の走査動線に対向して延在するようにカートリッジ内壁に設けると共に、前記記録ディスクの面内を、記録/再生装置側に設けられた記録/再生手段が走査する動線に近接し、かつ該記録ディスクの中心付近を通る直線Aによって2つの領域に分け、該領域の少なくとも一方に、空気力学的な作用力を発生させて、前記主安定化部材が位置する前記記録ディスク面において前記主安定化部材を作用させた場合に発生するディスク面の対抗力が大きくなるように補助安定化部材をカートリッジ内壁に設けたことを特徴とするディスクカートリッジ。
In a disc cartridge comprising a main stabilizing member in which a flexible recording disc is housed and which suppresses at least recording / reproducing position blurring of the recording disc using the Bernoulli effect when the recording disc rotates ,
The main stabilizing member is provided on the inner wall of the cartridge so as to extend opposite to the scanning flow line in the disk radial direction of the recording / reproducing means, and the surface of the recording disk is provided on the recording / reproducing apparatus side. The recording / reproducing means is divided into two areas by a straight line A that is close to the flow line to be scanned and passes near the center of the recording disk, and aerodynamic acting force is generated in at least one of the areas. The auxiliary stabilizing member is provided on the inner wall of the cartridge so that the opposing force of the disk surface generated when the main stabilizing member is applied to the recording disk surface on which the main stabilizing member is located is increased. Disk cartridge.
前記主安定化部材と前記補助安定化部材との位置を調整可能にしたことを特徴とする請求項12,13または14記載のディスクカートリッジ。   15. The disk cartridge according to claim 12, wherein the positions of the main stabilizing member and the auxiliary stabilizing member are adjustable.
JP2003416594A 2003-01-28 2003-12-15 Recording/reproducing apparatus and disk cartridge Pending JP2005032402A (en)

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