JPS60131652A - Signal recording stamper - Google Patents
Signal recording stamperInfo
- Publication number
- JPS60131652A JPS60131652A JP24019983A JP24019983A JPS60131652A JP S60131652 A JPS60131652 A JP S60131652A JP 24019983 A JP24019983 A JP 24019983A JP 24019983 A JP24019983 A JP 24019983A JP S60131652 A JPS60131652 A JP S60131652A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- signals
- stamper
- recording
- ratio
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000011347 resin Substances 0.000 abstract description 8
- 229920005989 resin Polymers 0.000 abstract description 8
- 238000000465 moulding Methods 0.000 abstract description 3
- 230000035897 transcription Effects 0.000 abstract 2
- 238000013518 transcription Methods 0.000 abstract 2
- 238000002347 injection Methods 0.000 description 11
- 239000007924 injection Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 9
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/2407—Tracks or pits; Shape, structure or physical properties thereof
- G11B7/24085—Pits
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
- G11B23/0057—Intermediate mediums, i.e. mediums provided with an information structure not specific to the method of reproducing or duplication such as matrixes for mechanical pressing of an information structure ; record carriers having a relief information structure provided with or included in layers not specific for a single reproducing method; apparatus or processes specially adapted for their manufacture
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/26—Apparatus or processes specially adapted for the manufacture of record carriers
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明はビデオディスクまたはオーディオディスクのよ
うな映像、音響、もしくは他の情報信号が面の凹凸の形
で記録されている信号記録スタンパ−やトラック溝を有
する信号記録スタンパ−に関するものである。信号記録
スタンパ−より信号を転写する方法として、インジェク
ションによる方法、インジェクションコンプレッション
による方法、紫外線硬化樹脂を用いる方法があるが本発
明は特にインジェクションおよびインジュークションコ
ンブレッションによる方法に用いる信号記録スタンパ−
に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to signal recording stampers or track grooves on which video, audio, or other information signals are recorded in the form of surface irregularities, such as video discs or audio discs. The present invention relates to a signal recording stamper having: Methods for transferring signals from a signal recording stamper include an injection method, an injection compression method, and a method using an ultraviolet curing resin.
It is related to.
従来例の構成とその問題点
第１図に示すように金型１に内外周および裏面を加工し
たスタンパ−２をホルダー３にて取り伺け、溶解した樹
脂を金型１内に射出し、圧力を加え冷却することによシ
ディスクを作製する。これに用いる信号記録スタンパ−
の信号４の半径方向の形状は、第２図に示すように長方
形に近い台形であり多少のバラツキはあるが、上辺と底
辺の比率は１．２から１．４倍である。Structure of the conventional example and its problems As shown in Fig. 1, a stamper 2 whose inner and outer peripheries and back surfaces are processed in a mold 1 is taken up using a holder 3, and molten resin is injected into the mold 1. A cydisk is prepared by applying pressure and cooling. Signal recording stamper used for this
As shown in FIG. 2, the shape of the signal 4 in the radial direction is a trapezoid close to a rectangle, and although there is some variation, the ratio of the top side to the bottom side is 1.2 to 1.4 times.
しかしながら、上記のような方法においては次のような
問題がある。However, the above method has the following problems.
インジェクションあるいは、インジェクションコンプレ
ッションのように、金型中央より信号４の凹凸が数１０
０λから数１ ｏｏｏＸのスタンパ−表面にそって金型
内に溶解した樹脂を射出し、圧力を加え冷却することに
より信号４を転写しディスクを作製する場合に、信号４
の形状が長方形に近い場合、スタンパ−信号面上の樹層
□の流れと反対側の鏡面部分の樹脂の流れに違いが生じ
、断層あるいは歪が発生し、ディスク側の信号に亀裂が
出来たシ、複屈折率が悪くなる。従って信号転写時の成
形条件の選び方が難しく、樹脂の射出速度、圧力、温度
々どが少しずれただけで転写が悪くなってしまう。Like injection or injection compression, there are several tens of concavities and convexities of signal 4 from the center of the mold.
When producing a disk by injecting melted resin into a mold along the stamper surface of 0λ to several oooX, applying pressure and cooling, signal
If the shape of the stamper is close to a rectangle, there will be a difference between the flow of the tree layer □ on the stamper signal surface and the flow of the resin on the mirror surface on the opposite side, causing faults or distortions and cracks in the signal on the disk side. C, birefringence worsens. Therefore, it is difficult to select molding conditions during signal transfer, and even a slight deviation in resin injection speed, pressure, temperature, etc. will result in poor transfer.
発明の目的
本発明の目的は、信号記録スタンパ−を用いインジェク
ションあるいはインジェクションデンプレソションの方
法により信号を転写する場合、記録信号の形状を変える
ことにより、転写性をよくし、ディスク作製効率を上げ
ようとするものである。OBJECTS OF THE INVENTION An object of the present invention is to improve the transferability and increase the disk manufacturing efficiency by changing the shape of the recorded signal when a signal is transferred by injection or injection depreciation using a signal recording stamper. This is what we are trying to do.
発明の構成
本発明のスタンパ−は、記録信号の形状を、上辺と底辺
との比率が１．５以上となるような台形にすることによ
りインジェクションあるいは、インジェクションコンプ
レッションの方法による樹脂の流れをよくし、信号転写
を容易にするものである。Structure of the Invention The stamper of the present invention improves the flow of resin by injection or injection compression method by making the shape of the recording signal into a trapezoid with a ratio of the top side to the bottom side of 1.5 or more. , which facilitates signal transfer.
実施例の説明
以下本発明の一実施例について図面を参照し斤から説明
する。DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.
第３図は、本発明の一実施例における記録信号の半径方
向の断面図であり、信号５の形状の上辺と底辺との比率
を１．６から２にしだものである。FIG. 3 is a radial cross-sectional view of a recording signal according to an embodiment of the present invention, in which the ratio of the top side to the bottom side of the shape of the signal 5 is changed from 1.6 to 2.
この形状の記録信号６を有するスタンパ−を用いて信号
を転写する場合、樹脂の流れがよくなり、成形条件にか
なりの余裕が出来ただけでなく、ディスク側の信号に断
層あるいは歪などがなくなった。また転写により作製し
たディスクより信号にレーザをあて反射光より信号を再
生する場合、記録信号が長方形に近い場合（上辺と底辺
の比率が１．２倍程度）に比べ信号からの反射光量が１
５チ程度増え、電気特性にも余裕をもつことが出来る。When transferring signals using a stamper having a recording signal 6 of this shape, not only does the resin flow better and there is considerable leeway in the molding conditions, but there are no faults or distortions in the signals on the disk side. Ta. Furthermore, when a laser is applied to a signal from a disk made by transfer and the signal is reproduced from the reflected light, the amount of reflected light from the signal is 1
This increases the number of chips by about 5 inches, allowing for more leeway in electrical characteristics.
このような台形の記録信号を作製するには、幾つかの方
法がある。第１として記録時のレーザ絞り込みレンズを
開口率の小さなものにする、第２として絞シ込しンズ前
までのビームを平行光よりずらす、第３として記録時の
フォーカス位置を無理にずらす、などの方法によりビー
ムを拡げればよい。すなわちレジスト上での露光ビーム
を拡げることにより台形の記録信号を作製する。さらに
は、感度の低いレジストを使用したり、現像において現
像の途中で止めるなどの方法によりさらに上辺と底辺の
比の大きな記録信号を作製することが出来る。There are several methods for creating such a trapezoidal recording signal. The first is to use a laser aperture lens with a small aperture ratio during recording, the second is to shift the beam before the aperture lens from parallel light, and the third is to forcibly shift the focus position during recording, etc. The beam can be expanded using the following method. That is, a trapezoidal recording signal is created by expanding the exposure beam on the resist. Furthermore, by using a resist with low sensitivity or by stopping the development midway through development, it is possible to create a recording signal with an even larger ratio between the top side and the bottom side.
尚、本発明は凸状の信号のみならず、凹状のトラック溝
にも道３用できる。Note that the present invention can be applied not only to convex signals but also to concave track grooves.
発明の効果
以上の発明から明らかなように、本発明は面上に凹凸状
の信号もしくはトラック溝を形成したスタンパ−よシ、
インジェクションあるいはインジェクンヨンコンブレソ
ションの方法により、記録信号を転写する場合において
、記録信号の半径方向の形状を、上辺と底辺の比率が１
．６以上となるような台形にすることによシ、転写時の
槽脂の流れをよくし、ディスクの断層、歪などを無くす
ことが出来、またディスクより信号にレーザをあて反射
光よシ信号を再生する場合、信号からの反射光量を増す
ことが出来、再生時の電気特性に余裕を持たすことが出
来る。Effects of the Invention As is clear from the invention described above, the present invention provides a stamper sheet having uneven signals or track grooves formed on its surface.
When transferring a recording signal by injection or injection combination method, the radial shape of the recording signal is set so that the ratio of the top side to the bottom side is 1.
．． By making the trapezoid shape larger than 6, it is possible to improve the flow of fat during transfer and eliminate disk faults and distortions.Also, by applying a laser to the signal from the disk, the signal is reflected from the disk. When reproducing a signal, the amount of reflected light from the signal can be increased, and the electrical characteristics at the time of reproduction can have some leeway.
第１図は記録信号スタンパ−を金型に取シ付けたところ
の断面図、第２図は従来の記録信号スタンパ−の記録信
号の半径方向の断面図、第３図は本発明の一実施例にお
ける記録信号スタンパ−の記録信号の半径方向の断面図
である。
１・・・・・金型、２・・・・・記録信号スタンパ−１
３・・・・・記録スタンパ−取付はホルダー、４，６・
・・、信号。Fig. 1 is a sectional view of a recording signal stamper attached to a mold, Fig. 2 is a radial sectional view of a recording signal of a conventional recording signal stamper, and Fig. 3 is an embodiment of the present invention. FIG. 3 is a radial cross-sectional view of a recording signal of a recording signal stamper in an example. 1... Mold, 2... Recording signal stamper 1
3. Recording stamper installation is done using holder, 4, 6.
··,signal.
Claims (1)
ラック溝の、上記スタンパ−の半径方向の断面形状を、
その上辺と底辺の比率が１．６以上となるような台形に
したことを特徴とする信号記録スタンパ−６The cross-sectional shape of the convex signal or concave track groove formed on the surface of the stamper in the radial direction of the stamper is
Signal recording stamper 6 characterized by having a trapezoidal shape with a ratio of the top side to the bottom side of 1.6 or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24019983A JPS60131652A (en) | 1983-12-20 | 1983-12-20 | Signal recording stamper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24019983A JPS60131652A (en) | 1983-12-20 | 1983-12-20 | Signal recording stamper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60131652A true JPS60131652A (en) | 1985-07-13 |
| JPH0447911B2 JPH0447911B2 (en) | 1992-08-05 |
Family
ID=17055928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24019983A Granted JPS60131652A (en) | 1983-12-20 | 1983-12-20 | Signal recording stamper |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60131652A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4885025A (en) * | 1972-02-15 | 1973-11-12 | ||
| JPS5210102A (en) * | 1975-07-15 | 1977-01-26 | Canon Inc | Recording medium |
| JPS55253A (en) * | 1975-02-24 | 1980-01-05 | Mca Disco Vision | Molding box for reprinting original record |
| JPS5542393A (en) * | 1978-09-11 | 1980-03-25 | Philips Nv | Recoding carrier |
| JPS5555448A (en) * | 1978-10-19 | 1980-04-23 | Philips Nv | Record carrier |
| JPS55101143A (en) * | 1979-01-29 | 1980-08-01 | Teac Co | Optical reproducing disc |
| JPS5885936A (en) * | 1981-11-16 | 1983-05-23 | Toshiba Corp | Optical information recording and reproducing device |
| JPS58185049A (en) * | 1982-04-22 | 1983-10-28 | Hitachi Ltd | Stamper and its production |
-
1983
- 1983-12-20 JP JP24019983A patent/JPS60131652A/en active Granted
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4885025A (en) * | 1972-02-15 | 1973-11-12 | ||
| JPS55253A (en) * | 1975-02-24 | 1980-01-05 | Mca Disco Vision | Molding box for reprinting original record |
| JPS5210102A (en) * | 1975-07-15 | 1977-01-26 | Canon Inc | Recording medium |
| JPS5542393A (en) * | 1978-09-11 | 1980-03-25 | Philips Nv | Recoding carrier |
| JPS5555448A (en) * | 1978-10-19 | 1980-04-23 | Philips Nv | Record carrier |
| JPS55101143A (en) * | 1979-01-29 | 1980-08-01 | Teac Co | Optical reproducing disc |
| JPS5885936A (en) * | 1981-11-16 | 1983-05-23 | Toshiba Corp | Optical information recording and reproducing device |
| JPS58185049A (en) * | 1982-04-22 | 1983-10-28 | Hitachi Ltd | Stamper and its production |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0447911B2 (en) | 1992-08-05 |
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