WO2013031086A1 - テープ状光記録媒体の金型、テープ状光記録媒体およびその裁断装置 - Google Patents
テープ状光記録媒体の金型、テープ状光記録媒体およびその裁断装置 Download PDFInfo
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- WO2013031086A1 WO2013031086A1 PCT/JP2012/004780 JP2012004780W WO2013031086A1 WO 2013031086 A1 WO2013031086 A1 WO 2013031086A1 JP 2012004780 W JP2012004780 W JP 2012004780W WO 2013031086 A1 WO2013031086 A1 WO 2013031086A1
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- tape
- recording medium
- optical recording
- shaped optical
- mold
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- 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
- G11B7/002—Recording, reproducing or erasing systems characterised by the shape or form of the carrier
- G11B7/003—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with webs, filaments or wires, e.g. belts, spooled tapes or films of quasi-infinite extent
- G11B7/0031—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with webs, filaments or wires, e.g. belts, spooled tapes or films of quasi-infinite extent using a rotating head, e.g. helicoidal recording
-
- 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
- G11B7/263—Preparing and using a stamper, e.g. pressing or injection molding substrates
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
-
- 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
- G11B7/24003—Shapes of record carriers other than disc shape
- G11B7/24009—Tapes, long films or long sheets
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/141—With means to monitor and control operation [e.g., self-regulating means]
Definitions
- the present invention relates to a mold for producing a tape-shaped optical recording medium having a recording / reproducing groove on the surface of a film, a tape-shaped optical recording medium, and a cutting apparatus for the same.
- Patent Document 1 discloses a tape-shaped recording medium (metal thin film magnetic tape) that is cut into a product size by such a slitting method.
- the conventional slit method that simply cuts to the tape width has a problem that it is difficult to cut accurately with respect to the recording / reproducing groove (tracking signal groove) formed on the tape-shaped optical recording medium. For this reason, the reduction in the cutting accuracy at the time of slitting has had a negative effect on the tracking followability and the quality of the recording signal of the tape-shaped optical recording medium after manufacture.
- an object of the present invention is to provide a mold for a tape-like optical recording medium capable of cutting the recording / reproducing groove with high accuracy by reducing the amount of tape meandering at the time of cutting in order to solve the above problems.
- An object of the present invention is to provide a tape-shaped optical recording medium and a cutting apparatus for the same.
- a tape-shaped optical recording medium mold of the present invention is a tape-shaped optical recording medium mold for forming a recording / reproducing groove of a recording medium, and a plurality of recording / reproducing grooves are formed.
- a recording / reproducing convex and a guide part having a shape different from that of the recording / reproducing convex are provided.
- the shape of the guide portion is different from the recording / reproduction convexity, and that the light reflectance is different from that of the recording / reproduction groove on the tape-like optical recording medium side on which the mold guide portion is transferred and molded. It only has to be. Specifically, for example, when the height (thickness) of the convex part of the guide part is different from the convex part of the recording / reproducing, the guide part is a concave part and the shape is different, or the uneven part of the guide part is different Etc. are included.
- the tape-shaped optical recording medium manufactured by the mold provided with the guide portion is transferred with the guide portion for preventing meandering at the time of cutting. Therefore, by cutting the tape-shaped optical recording medium along the guide portion to a desired width, the recording / reproducing groove can be cut with high accuracy.
- Sectional drawing which shows the shape of the surface of the metal mold
- die of FIG. Sectional drawing which shows the state at the time of transferring a groove
- the schematic perspective view which shows the structure of the slitter apparatus which concerns on Embodiment 2 of this invention.
- Sectional drawing of the slitter apparatus of FIG. Sectional drawing which shows the shape of the surface of the metal mold
- FIG. 1 shows a cross-sectional view of the surface of a mold (mold of a tape-shaped optical recording medium) 100.
- the mold 100 is a roll-shaped mold (for example, a stamper roll) provided for forming a recording / reproducing groove on the surface of the optical tape 200, and includes a recording / reproducing convex 101, a cutting guide convex (guide portion). 102.
- a roll-shaped mold for example, a stamper roll
- the mold 100 is a roll-shaped mold (for example, a stamper roll) provided for forming a recording / reproducing groove on the surface of the optical tape 200, and includes a recording / reproducing convex 101, a cutting guide convex (guide portion). 102.
- the recording / reproducing protrusions 101 have a width of 100 to 300 nm and a height of 20 to 50 nm, and a plurality of recording / reproducing protrusions 101 are formed on the mold 100.
- the cutting guide protrusion 102 is a protrusion having a width of 500 to 1000 nm and a height of 200 to 400 nm, and is formed so as to sandwich the recording / reproducing protrusion 101 at both outer ends in the width direction of the mold 100.
- FIG. 2 shows a cross-sectional view of an optical tape (tape-shaped optical recording medium) 200.
- the optical tape 200 is a long recording medium and includes a UV curable resin 201 and a base film 202. As shown in FIG. 3, the optical tape 200 is transferred from the base film 202 side in a state where the UV curable resin 201 and the base film 202 are brought into contact with the mold 100 while being conveyed in a predetermined direction. It is manufactured by curing the UV curable resin 201 by irradiating ultraviolet rays.
- the recording / reproducing groove 204 and the cutting guide groove 203 transferred from the mold 100 are formed on the surface of the optical tape 200 by the UV curable resin 201.
- the mold 100 according to the present embodiment has not only the recording / reproducing protrusion 101 but also a cutting guide protrusion 102 in parallel with the recording / reproducing protrusion 101 on the surface.
- the cutting guide protrusion 102 has a shape different from the shape of the recording / reproducing protrusion 101.
- the recording / reproducing groove 204 is transferred to the portion corresponding to the recording / reproducing protrusion 101, and the cutting guide groove 203 is transferred to the portion corresponding to the cutting guide protrusion 102.
- the optical tape 200 when the recording / reproducing groove 204 and the cutting guide groove 203 are irradiated with light from the same direction, the reflectance of the light changes greatly, so that the recording / reproducing groove 204 is not mistaken for cutting.
- the position of the guide groove 203 can be easily detected. Therefore, when the optical tape 200 is cut into the product size, it is possible to cut the optical tape 200 along the recording / reproducing groove 204 with high accuracy. As a result, the amount of tape meandering with respect to the recording / reproducing groove 204 can be reduced, and the tracking followability and the quality of the recording signal can be improved.
- the same effect as in the present embodiment can also be realized by providing one cutting guide projection 102 on only one side (see FIG. 6 described later).
- the cutting guide protrusions 102 are provided at both ends of the mold 100, but the cutting guide protrusions may be provided at appropriate intervals.
- the cutting guide protrusions 102 may be provided in accordance with the distance between the blades of a slitter device (cutting device) described later.
- FIG. 4 is a schematic view of a slitter device (cutting device) for cutting the optical tape 200 manufactured by the mold 100
- FIG. 5 is a sectional view thereof.
- the slitter device of the present embodiment controls a guide groove detector (detector) 400 that detects the guide groove for cutting 203 formed on the optical tape 200, and the cutting position of the optical tape 200.
- a guide groove detector (detector) 400 that detects the guide groove for cutting 203 formed on the optical tape 200, and the cutting position of the optical tape 200.
- an actuator 401 is provided for controlling the movement of the original film of the optical tape 200 in the axial direction.
- the guide groove detector 400 detects the cutting guide groove 203 of the optical tape 200.
- the actuator 401 controls the movement of the optical tape 200 in the axial direction based on the position information of the cutting guide groove 203, thereby cutting the blade.
- the optical tape 200 is cut.
- the slitter device is parallel to the recording / reproducing groove 204 of the optical tape 200 while detecting the cutting guide grooves 203 formed at both ends in the width direction of the optical tape 200 detected by the guide groove detector 400.
- the cutting guide protrusion 302 is provided only on one side in the width direction of the mold 300 for molding the optical tape. Also good. Thereby, as shown in FIG. 7, the optical tape 500 including the base film 202 and the UV curable resin 501 in which the cutting guide groove 503 is formed only on one side in the width direction can be obtained.
- the present invention is not limited to this. Since it is only necessary to detect the tape position by detecting that the reflectivity of the cutting guide groove is different from that of the recording / reproducing groove, the guide groove is guided as a dot, discontinuous groove, or convex shape using a die such as a stamper roll. A part may be formed.
- the present invention has an effect of providing an optical tape with high tracking followability by cutting a tape-like optical recording medium to a desired width along a guide portion with high precision cutting with respect to a recording / reproducing groove. Therefore, the present invention can be widely applied to a mold for producing a tape-shaped optical recording medium.
- Mold 101 Recording / reproducing convex 102 Guide convex for cutting (guide part) 200
- Optical tape (tape-shaped optical recording medium) 201
- UV curable resin 202
- Base film 203
- Guide groove for cutting (guide portion) 204
- Recording / reproducing groove 300
- Die 302
- Cutting projection convex 400
- Guide groove detector (detection unit) 401
- Actuator 403 Blade Optical tape (tape-shaped optical recording medium)
- UV curable resin 503 Guide groove for cutting (guide part)
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Manufacturing Optical Record Carriers (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
Abstract
Description
例えば、特許文献1には、このようなスリット方法によって製品サイズに裁断されるテープ状の記録媒体(金属薄膜型磁気テープ)について開示されている。
上記目的を達成するために、本発明のテープ状光記録媒体の金型は、記録媒体の記録再生溝を形成するテープ状光記録媒体の金型であって、記録再生溝を形成する複数の記録再生凸と、記録再生凸と比較して形状が異なる案内部とを備えている。
図1は、金型(テープ状光記録媒体の金型)100の表面の断面図を示す。
金型100は、光テープ200の表面に記録再生溝を成形するために設けられたロール状の金型(例えば、スタンパロール)であって、記録再生凸101、裁断用案内凸(案内部)102を備えている。金型100を用いることで、1つあるいは複数の長尺の光テープを製造することが可能である。
図2は、光テープ(テープ状光記録媒体)200の断面図を示す。
本実施の形態の金型100は、表面に、記録再生凸101だけでなく、記録再生凸101に平行に裁断用案内凸102を設けている。そして、裁断用案内凸102は、記録再生凸101の形状とは異なる形状を有している。
そして、光テープ200において、記録再生溝204、裁断用案内溝203に対して同じ方向から光を照射すると、光の反射率が大きく変化するため、記録再生溝204と誤認することなく、裁断用案内溝203の位置検出を容易に実施することができる。従って、光テープ200を製品サイズに裁断する際に、記録再生溝204に沿って精度よく裁断することが可能となる。この結果、記録再生溝204に対するテープの蛇行量を低減して、トラッキング追従性および記録信号の品質を向上させることができる。
なお、本実施の形態では、金型100の両端に裁断用案内凸102を設けたが、それ以外に、適切な間隔で裁断用案内凸を設けて構わない。例えば、後述するスリッター装置(裁断装置)の刃物の間隔に合わせて裁断用案内凸102を設けてもよい。
本実施の形態のスリッター装置は、従来のスリッター装置に加えて、光テープ200に形成された裁断用案内溝203を検出する案内溝検出器(検知部)400、光テープ200の裁断位置を制御するために光テープ200の原反を軸方向において移動制御するアクチュエータ401を備えている。
(A)
上記実施の形態では、複数の記録再生凸101を挟み込むように、光テープ200を成形する金型100の両端に裁断用案内凸102を設けた例を挙げて説明した。しかし、本発明はこれに限定されるものではない。
これにより、図7に示すように、ベースフィルム202と、幅方向における片側のみに裁断用案内溝503が成形されたUV硬化性樹脂501とを含む光テープ500を得ることができる。
上記実施の形態では、案内部として設けられた裁断用案内溝203を連続溝として形成した例を挙げて説明した。しかし、本発明はこれに限定されるものではない。
裁断用案内溝において記録再生溝とは反射率が変わったことを検知してテープの位置検出ができればよいため、例えば、スタンパロール等の金型を用いてドットや不連続溝、凸形状として案内部を形成してもよい。
上記実施形態では、原反の光テープ200を軸方向に移動させる手段として、アクチュエータ401を用いた例を挙げて説明した。しかし、本発明はこれに限定されるものではない。
例えば、アクチュエータ401の代わりに傾斜ロールを用いて原反の光テープ200を軸方向に移動させてもよい。
101 記録再生凸
102 裁断用案内凸(案内部)
200 光テープ(テープ状光記録媒体)
201 UV硬化性樹脂
202 ベースフィルム
203 裁断用案内溝(案内部)
204 記録再生溝
300 金型
302 裁断用案内凸
400 案内溝検出器(検知部)
401 アクチュエータ
403 刃物
500 光テープ(テープ状光記録媒体)
501 UV硬化性樹脂
503 裁断用案内溝(案内部)
Claims (11)
- 記録媒体の記録再生溝を形成するテープ状光記録媒体の金型であって、
前記記録再生溝を形成する複数の記録再生凸と、
前記記録再生凸と形状が異なる案内部と、
を備えているテープ状光記録媒体の金型。 - 前記案内部は、凸部または凹部を有している、
請求項1に記載のテープ状光記録媒体の金型。 - 前記案内部は、前記複数の記録再生凸を挟み込むように、幅方向における両端に設けられている、
請求項1または2に記載のテープ状光記録媒体の金型。 - 前記案内部は、複数設けられており、
前記複数の案内部が等間隔で配置されている、
請求項1または2に記載のテープ状光記録媒体の金型。 - 前記案内部は、幅方向における両端の一方に設けられている、
請求項1または2に記載のテープ状光記録媒体の金型。 - 裁断装置によって製品サイズに裁断される前のテープ状光記録媒体であって、
複数の記録再生溝と、
前記記録再生溝と比較して光の反射率が異なる案内部と、
を有するテープ状光記録媒体。 - 前記案内部は、前記記録再生溝と比較して異なる形状を有している、
請求項6に記載のテープ状光記録媒体。 - 前記案内部は、凸部または凹部を有している、
請求項6または7に記載のテープ状光記録媒体。 - 前記案内部は、複数設けられている、
請求項6から8のいずれか1項に記載のテープ状光記録媒体。 - 請求項6から9のいずれか1項に記載のテープ状光記録媒体を裁断する裁断装置であって、
前記案内部の位置を検知する検知部と、
前記案内部に沿って前記テープ状光記録媒体を裁断する裁断部と、
を備えている、
裁断装置。 - 前記検知部における検知結果に基づいて、前記裁断部によって裁断される前記テープ状光記録媒体を幅方向において移動させるアクチュエータを、さらに備えている、
請求項10に記載の裁断装置。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US14/128,418 US20140123158A1 (en) | 2011-08-30 | 2012-07-26 | Mold for tape-shaped optical recording medium, tape-shaped optical recording medium, and cutting device therefor |
Applications Claiming Priority (2)
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JP2011-187206 | 2011-08-30 | ||
JP2011187206 | 2011-08-30 |
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WO2013031086A1 true WO2013031086A1 (ja) | 2013-03-07 |
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PCT/JP2012/004780 WO2013031086A1 (ja) | 2011-08-30 | 2012-07-26 | テープ状光記録媒体の金型、テープ状光記録媒体およびその裁断装置 |
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US (1) | US20140123158A1 (ja) |
JP (1) | JPWO2013031086A1 (ja) |
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2012
- 2012-07-26 WO PCT/JP2012/004780 patent/WO2013031086A1/ja active Application Filing
- 2012-07-26 US US14/128,418 patent/US20140123158A1/en not_active Abandoned
- 2012-07-26 JP JP2013531017A patent/JPWO2013031086A1/ja active Pending
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JPS62102439A (ja) * | 1985-10-30 | 1987-05-12 | Hitachi Ltd | 光テ−プ装置用光テ−プ |
JPH06314442A (ja) * | 1993-04-30 | 1994-11-08 | Sony Corp | 光記録媒体、その製造方法及びその製造装置 |
JP2002308490A (ja) * | 2001-04-13 | 2002-10-23 | Fuji Photo Film Co Ltd | 磁気テープの製造方法 |
JP2007519163A (ja) * | 2004-01-21 | 2007-07-12 | マイクロコンティニュアム・インコーポレーテッド | 事前フォーマット済み線状光データ記憶媒体 |
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US20140123158A1 (en) | 2014-05-01 |
JPWO2013031086A1 (ja) | 2015-03-23 |
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