TW200941476A - Optical information recording medium and method for manufacturing same - Google Patents

Optical information recording medium and method for manufacturing same Download PDF

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Publication number
TW200941476A
TW200941476A TW098103735A TW98103735A TW200941476A TW 200941476 A TW200941476 A TW 200941476A TW 098103735 A TW098103735 A TW 098103735A TW 98103735 A TW98103735 A TW 98103735A TW 200941476 A TW200941476 A TW 200941476A
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Taiwan
Prior art keywords
layer
hard coat
recording
light
recording medium
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TW098103735A
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Chinese (zh)
Inventor
Isao Matsuda
Yutaka Shibata
Masashi Hattori
Takeshi Otsu
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Taiyo Yuden Kk
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Publication of TW200941476A publication Critical patent/TW200941476A/en

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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
    • G11B7/24—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
    • G11B7/266—Sputtering or spin-coating layers
    • 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
    • G11B7/2403—Layers; Shape, structure or physical properties thereof
    • G11B7/24056—Light transmission layers lying on the light entrance side and being thinner than the substrate, e.g. specially adapted for Blu-ray® discs
    • 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
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/254—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of protective topcoat layers
    • G11B7/2542—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of protective topcoat layers consisting essentially of organic resins
    • 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
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/257—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers
    • G11B2007/25705—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers consisting essentially of inorganic materials
    • G11B2007/25706—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers consisting essentially of inorganic materials containing transition metal elements (Zn, Fe, Co, Ni, Pt)
    • 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
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/257—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers
    • G11B2007/25705—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers consisting essentially of inorganic materials
    • G11B2007/2571—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers consisting essentially of inorganic materials containing group 14 elements except carbon (Si, Ge, Sn, Pb)
    • 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
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/257—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers
    • G11B2007/25705—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers consisting essentially of inorganic materials
    • G11B2007/25713—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers consisting essentially of inorganic materials containing nitrogen
    • 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
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/257—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers
    • G11B2007/25705—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers consisting essentially of inorganic materials
    • G11B2007/25715—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers consisting essentially of inorganic materials containing oxygen
    • 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
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/257—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers
    • G11B2007/25705—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers consisting essentially of inorganic materials
    • G11B2007/25716—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers consisting essentially of inorganic materials containing sulfur
    • 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
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
    • G11B7/243—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising inorganic materials only, e.g. ablative layers
    • G11B7/2433—Metals or elements of Groups 13, 14, 15 or 16 of the Periodic Table, e.g. B, Si, Ge, As, Sb, Bi, Se or Te
    • 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
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
    • G11B7/244—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising organic materials only
    • G11B7/246—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising organic materials only containing dyes
    • G11B7/2467—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising organic materials only containing dyes azo-dyes
    • 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
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
    • G11B7/244—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising organic materials only
    • G11B7/246—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising organic materials only containing dyes
    • G11B7/247—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising organic materials only containing dyes methine or polymethine dyes
    • G11B7/2472—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising organic materials only containing dyes methine or polymethine dyes cyanine
    • 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
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/253—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates
    • G11B7/2531—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising glass
    • 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
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/253—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates
    • G11B7/2532—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising metals
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
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    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/253—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates
    • G11B7/2533—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising resins

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Optical Record Carriers (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)

Abstract

An optical information recording medium exhibiting a favorable recording characteristic even if recording is carried out while a fingerprint is on the surface of the light-transmitting layer. The optical information recording medium (1) includes a recording layer (6) and a light-transmitting layer (7) transmitting a recording laser beam and a reproducing laser beam directed to the recording layer (6). A hard-coat layer (8) is formed on the surface of the light-transmitting layer (7) and is formed of a resin the angle of contact of which with triolein on the hard coat is 50 DEG or more, preferably 60 DEG or more.

Description

200941476 六、發明說明： 【發明所屬之技術領域】 本發明係關於一種尤其在記錄密度高之可錄型光資訊記 錄媒體中可降低指紋附著對記錄特性之影響的光資訊記錄 媒體及其製造方法。 【先前技術】 可錄型CD(CD-R)、可錄型DVD(DVD±R)或者可錄型藍 光光盤（BD-R)等光資訊記錄媒體即光盤，具有在圓盤狀基 ❹ 板之其中一個面上形成有記錄層、反射層以及視需要之保 護層的結構。又，在上述基板的形成有記錄層與反射層之 側的面上，形成有被稱為溝槽的螺旋狀或者同心圓狀之 槽，在相鄰之溝槽之間形成有被稱為岸台之凸部。如此之 光盤係藉由對溝槽上之記錄層照射記錄用雷射光而形成訊 i几來進行s己錄。對於該訊坑之長度、訊坑與訊坑之間的部 分（以下稱為間隔）之長度以及該等之排列，照射再生用雷 射光並璜取反射光作為再生信號，藉此進行再生。 ® 此種光盤中，記錄用雷射光以及再生用雷射光通過透光 層而照射至記錄層上。此時對於透光層而言，在cd_r4 者dvd±r之情形_，由於具有在透光性之圓盤狀基板（厚 度在CD-R•之情形時為1.2 mm，在DVD±R之情形時為0.6 mm)上依序形成有記錄層、反射層的結構，故透光性之圓 盤狀基板相當於透光層。又，在BDR之情形時由於具有 在厚度為1.1 mm之圓盤狀基板上依序形成有反射層與記錄 在'°己錄層上形成有厚度為0.1 mm之透明覆蓋層的結 137535.doc 200941476 構’故透明覆蓋層相當於透光層。 又，在BD-R之情形時，根據形成訊坑之位置不同，有 在圓盤狀基板之岸台上所形成之記錄層中形成訊坑的 OnGroove記錄方式、以及在圓盤狀基板之溝槽上所形成之 記錄層中形成訊坑的InGroove記錄方式此兩種記錄方式。 OnGroove記錄方式係用於在記錄層中使用無機材料之bd_ R，InGroove記錄方式係用於在記錄層中使用有機色素之 BD-R。 此種光盤若於射入雷射光之透光層之表面上附有損傷或 者指紋等，則有時雷射光之光斑形狀會散亂，導致記錄品 質下降。尤其對如DVD±R或者BD_R之類的高密度記錄之 光盤而言，該影響較為明顯。因此’將透光層表面上形成 有硬塗層之光盤作為產品來生產。該硬塗層使用有比構成 透光層之材料更硬的透光性材料，因此透光層不易受到損 傷0 又，關於對指紋之耐受性，日本專利特開2〇〇5_〇11447 號公報中揭示有達到如下水準之光盤：使人工指紋附著在 透光層表面上並擦去後之記錄特性（例如抖動特性）並未出 錯。 [專利文獻1]曰本專利特開2005-011447號公報 【發明内容】 [發明所欲解決之問題] 然而，專利文獻1所揭示之光盤係以將附著之指紋擦去 為前提。此種光盤中，當擦去指紋時可能會對透光層之表 137535.doc 200941476 面或者硬塗層之表面造成損傷。當對透光層之表面或者硬 塗層之表面造成損傷時，該部分中雷射光之光斑形狀會散 亂’從而導致記錄特性下降。此對如Bd_r之類的高密度 記錄之光盤的影響較大。 而且’在記錄層中使用有機色素之BD-R之情形時，因 採用InGrooveK錄方式，故上述現象之影響變大。其原因 在於，雷射光之波長為405 nm，且溝槽之寬度為0.16 μιη 左右’故在超過繞射極限之狀態下進行記錄’因此與 ❿ 〇nGroove記錄方式相比雷射光之光斑形狀散亂的影響變得 更大。 因此，本發明解決了上述課題，提供一種即使在附著有 指紋之狀態下亦可獲得良好之記錄特性的光資訊記錄媒 體。 [解決問題之技術手段] 本發明人等進行了努力研究’結果發現，若作為指紋而 附著之皮脂為特定之粒徑以下’則不會影響記錄特性。因 此’本發明之第一解決方法係提出一種光資訊記錄媒體： 其具有記錄層以及使照射於該記錄層之雷射光通過之透光 層，並且該光資訊記錄媒鱧中，在上述透光層之表面上形 成有硬塗層’上述硬塗層係與硬化覆膜上之粒狀三油酸甘 油酯（triolein)的接觸角達50。以上之樹脂。 三油酸甘油酯被用作人工指紋液之分散介質，硬塗層表 面上附著有以三油酸甘油酯作為分散介質之人工指紋的狀 態近似於實際之指紋附著狀態。若該三油酸甘油酯之最大 I37535.doc 200941476BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical information recording medium capable of reducing the influence of fingerprint attachment on recording characteristics, particularly in a recordable optical information recording medium having a high recording density, and a method of manufacturing the same . [Prior Art] An optical information recording medium such as a recordable CD (CD-R), a recordable DVD (DVD±R) or a recordable Blu-ray Disc (BD-R), which is a disc, has a disc-shaped base plate. One of the faces is formed with a recording layer, a reflective layer, and an optional protective layer. Further, on the surface of the substrate on which the recording layer and the reflective layer are formed, a spiral or concentric groove called a groove is formed, and a groove called a bank is formed between the adjacent grooves. The convex part of the platform. Such an optical disc is recorded by illuminating the recording layer on the groove with laser light for recording. The length of the pit, the length of the portion between the pit and the pit (hereinafter referred to as the interval), and the arrangement thereof are irradiated with the reproducing laser light and the reflected light is extracted as a reproduction signal, thereby reproducing. ® In this type of optical disc, the recording laser light and the reproducing laser light are irradiated onto the recording layer through the light transmitting layer. At this time, for the light-transmitting layer, in the case of cd_r4 dvd±r, since it has a light-transmissive disk-shaped substrate (thickness is 1.2 mm in the case of CD-R•, in the case of DVD±R) When the recording layer and the reflective layer are formed in this order on 0.6 mm), the translucent disk-shaped substrate corresponds to the light-transmitting layer. Further, in the case of BDR, a reflective layer is formed sequentially on a disk-shaped substrate having a thickness of 1.1 mm, and a knot having a transparent cover layer having a thickness of 0.1 mm formed on the '° recording layer is formed. 137535.doc 200941476 The structure of the transparent cover layer is equivalent to the light-transmitting layer. Further, in the case of the BD-R, depending on the position at which the pit is formed, there is an OnGroove recording method in which a pit is formed in a recording layer formed on a land of the disc-shaped substrate, and a groove in the disc-shaped substrate. The InGroove recording mode in which the pit is formed in the recording layer formed on the groove is the two recording modes. The OnGroove recording method is a bd_R for using an inorganic material in a recording layer, and the InGroove recording method is a BD-R for using an organic dye in a recording layer. If such an optical disc is attached with a damage or a fingerprint on the surface of the light-transmitting layer that is incident on the laser light, the shape of the spot light of the laser light may be scattered, resulting in deterioration of the recording quality. Especially for high-density recording discs such as DVD±R or BD_R, the effect is more pronounced. Therefore, an optical disk on which a hard coat layer is formed on the surface of the light transmissive layer is produced as a product. The hard coat layer uses a light transmissive material which is harder than the material constituting the light transmissive layer, so that the light transmissive layer is less susceptible to damage. Further, regarding the resistance to fingerprints, Japanese Patent Laid-Open No. 2〇〇5_〇11447 The publication of the publication discloses an optical disk which achieves the following level: the recording characteristics (e.g., jitter characteristics) after the artificial fingerprint is attached to the surface of the light-transmitting layer and wiped off are not in error. [Problem to be Solved by the Invention] However, the optical disk disclosed in Patent Document 1 is premised on erasing the attached fingerprint. In such a disc, the surface of the light-transmissive layer may be damaged when the fingerprint is erased. When the surface of the light transmissive layer or the surface of the hard coat layer is damaged, the spot shape of the laser light in the portion is scattered, resulting in deterioration of recording characteristics. This has a greater impact on high-density recorded discs such as Bd_r. Further, when the BD-R of the organic dye is used in the recording layer, the influence of the above phenomenon is increased by using the InGrooveK recording method. The reason is that the wavelength of the laser light is 405 nm, and the width of the groove is about 0.16 μm, so the recording is performed in a state where the diffraction limit is exceeded. Therefore, the spot shape of the laser light is scattered compared with the ❿nGroove recording method. The impact has become even greater. Accordingly, the present invention has been made in view of the above problems, and provides an optical information recording medium which can obtain good recording characteristics even in a state in which a fingerprint is attached. [Means for Solving the Problem] The inventors of the present invention conducted an effort to study, and found that if the sebum attached as a fingerprint is below a specific particle diameter, the recording characteristics are not affected. Therefore, the first solution of the present invention proposes an optical information recording medium having a recording layer and a light transmissive layer through which the laser light irradiated to the recording layer passes, and in the optical information recording medium, in the light transmission A hard coat layer is formed on the surface of the layer. The contact angle of the hard coat layer with the granular triolein on the hardened film is 50. The above resin. Triolein is used as a dispersion medium for artificial fingerprint liquid, and the state of the artificial fingerprint with triolein as a dispersion medium attached to the surface of the hard coat layer approximates the actual fingerprint attachment state. If the triolein is the largest I37535.doc 200941476

徑⑴與高度（h)，再利用式⑷與式⑻來算出的接觸角 tanaj = 2h/r σ= 2tan',(2h/r) • . (A) ••(B) 該接觸角可藉由使用接觸角計（例如協和界面科學（股）製 造之CA-X型）來測定。The contact angle tanaj = 2h/r σ = 2tan', calculated by the equation (1) and the height (h), and the equation (4) and the equation (8), (2h/r) • (A) • • (B) It is determined by using a contact angle meter (for example, CA-X type manufactured by Kyowa Interface Science Co., Ltd.).

… β咬叫从工I樹脂。若接觸 角為60。以上，則以三油酸甘油酯作為分散介質之人工指 紋液附著時的最大粒徑達到10 μηι以下。若為該水準，則 即使於採用InGroove記錄方式之有機色素系BDR中在附 著有指紋之狀態下亦可獲得良好之記錄特性。 又，該硬塗層係由含有矽系或者氟系調平劑之樹脂所形 成。該樹脂所含之調平劑之量越多，則與三油酸甘油酯之 接觸角變得越大。若調平劑之含量為10%〜3 〇%，則接觸 角達50。以上，較好的是係若調平劑之含量為！ 5%〜3 〇%， 則接觸角達60°以上。再者，矽系調平劑與氟系調平劑可 137535.doc 200941476 單獨使用，亦可混合使用。 又’此種硬塗層可利用旋塗法，塗佈與硬化覆膜上之三 油酸甘油酯的接觸角達50。以上、較好的是60。以上之樹脂 材料而形成。 [發明之效果] 本發明之光資訊記錄媒體即使在附著有指紋之狀態下亦 可獲得良好之記錄特性。此種光資訊記錄媒體無需擦去指 紋’因此使得在擦去指紋時對透光層或者硬塗層造成損傷 © 之可能性減少。 【實施方式】 對於本發明之光資訊記錄媒體之實施形態，以BD-R之 情形為例’根據圖式進行說明。圖1所示之光資訊記錄媒 體1具有：在其中一面上以〇·32 之軌距螺旋狀地形成有 寬0.16 μιη之溝槽3與岸台4的厚1.1 mm之圓盤狀基板2、形 成在該基板之其中一面上之反射層5、形成在該反射層5上 A 之記錄層6、形成在該記錄層6上之厚0.1 mm之透光層7、 攀 以及形成在該透光層7上之硬塗層g。又，視需要在記錄層 6與透光層7之間形成由透明之無機材料構成之保護層9。 基板2係厚度為1.1 mm且直徑為120 mm之樹脂製基板。 該基板2可任意地選擇使用先前作為光資訊記錄媒體之基 板材料所使用的各種材料。具體可列舉：聚碳酸酯，聚曱 基丙稀酸甲酯等丙烯酸系樹脂，聚氣乙烯、氯乙烯共聚物 等氣乙稀系樹脂’環氧樹脂，非晶性聚烯烴，聚酯樹脂， 銘等金屬’玻璃等’視需要亦可併用該等材料。上述材料 137535.doc 200941476 中，從自成型性、耐濕性、尺寸穩定性與價格低廉等方面 考慮，較好的是熱塑性樹脂，尤其好的是聚碳酸酯。此種 基板2係藉由射出成形而形成。此時，在模具内設置有壓 模’藉此在基板2上形成螺旋狀之溝槽3與岸台4。該溝槽3 係以0.32 μιη之軌距而形成。再者，該基板2無需特別透射 光，因此亦可由透光性材料以外之材料形成。 反射層5係由Au、Ag、Al或者該等金屬之合金等的反射 率南之金屬薄膜所形成，且係利用蒸錄或者濺鍍等而形 成。記錄層6有使用色素之有機材料系記錄層與使用無機 材料之無機材料系記錄層。有機材料系記錄層係藉由利用 旋塗法，塗佈將偶氮系色素或者花青系色素等色素溶解在 例如TFP(四氟丙酵）溶液中所成之溶液而形成。無機材料 系記錄層係藉由利用蒸鍵或者濺鍍等，將Te_pd、Si_Cu、 Ge-Bi等成膜而形成。又，為了使光吸收性良好，無機材 料系記錄層以由2片電介質薄膜（例如ZnS、Si〇2等）夾持之 方式來形成。 當記錄層6為有機材料系時，由於係利用旋塗法而形 成，故如圖3所示，溝槽3上所形成之記錄層6之厚度比岸 台4上所形成之記錄層6之厚度更厚。因此，有機材料系之 BD-R採用將訊坑形成於在溝槽3上所形成之記錄層6中的 InGroove記錄方式。InGroo ve記錄方式中，由於將波長為 405 nm之雷射光照射至比波長窄的寬16〇 nm之凹部上，故 係在超過繞射極限之狀態下進行記錄。因此，記錄特性容 易受到雷射光之光斑形狀散亂的影響。 137535.doc 200941476 另一方面，當記錄層6為無機材料系時，由於係利用蒸 鍍或者濺鍍而形成，故如圖4所示，溝槽3上所形成之記錄 層6之厚度與岸台4上所形成之記錄層6之厚度大致相同。 因此，無機材料系之BD-R採用將訊坑形成於在岸台4上所 形成之記錄層6中的OnGroove記錄方式。〇nGr〇〇ve記錄方 式中，由於記錄層6相對於雷射光成為凸部，因此記錄特 性比較不易受到雷射光之光斑形狀散亂的影響。 透光層7係由透光性樹脂所形成。作為形成方法，有使 # 肖旋塗法等將㈣紫外線或者放射線進行硬化之硬化性樹 脂形成為(M mm之厚度的方法、以及利用黏著劑等來貼附 厚度為0.1 mm之透光性樹脂片的方法。關於該透光層7之 透光率，在厚度為（M mm、且利用波長為4〇5 nm2光以分 光光度4進行測定時為7〇%以上，較好的是❽以上。再 者，當記錄層6為有機材料系時，為了防止在透光層7之成 膜時》己錄層6中所含之色素向透光層7中擴散，或者用於形 0 成透光層7之硬化樹脂之溶劑或者黏著劑中所含之溶劑等 向°己錄層6中滲透等混合現象，而在記錄層6與透光層7之 間形^無機材料之保護層9。構成該保護層9之材料可列 舉々氧化石夕尤其是二氧化石夕，或者氧化辞、氧化飾、氧化 釔等氧化物；硫化鋅、硫化釔等硫化物；氮化矽等氮化 物；碳切；氧化物與硫之混合物等。該保護層9係利用 賤鍍等方法而形成。 硬塗層8係由石夕系或者氟系調平劑與利用紫外線或者放 線等進行硬化之硬化性樹脂的混合物所形成，且係利用 137535.doc 200941476 旋塗法進行塗佈而形成。作為矽系調平劑，可列舉交聯型 矽系調平劑（例如曰本共榮社化學製造之UCR L93或者曰 油製造之FS700)等。作為氟系調平劑，可列舉交聯型氟系 調平劑（例如D〗C製造之F_482或者曰油製造之F600)等 又，作為硬化性樹脂，可列舉丙烯酸系或者環氧系紫外線 硬化樹脂（例如日本化藥製造之丁¥8_5〇3)等。硬塗層8中之 調平劑含量在以（調平劑之量）χ1〇〇/(調平劑之量+硬化性 樹月a之量）表示時’為1 · 〇%〜3.0%，較好的是1 5 %~3.0〇/〇。 若含量超過3.0%，則硬塗層表面之調平劑之比例變得過 多，因此耐磨損性產生劣化，無法發揮作為硬塗層之硬度 的功能。因此調平劑之含量較好的是3.0%以下。 如此之光資訊記錄媒體1之硬塗層8具有排斥作為指紋而 附者之皮月曰並使之形成為粒狀的作用。該作用可以與被作 為人工指紋液之分散介質而使用之三油酸甘油醋的接觸角 來表示。而且’本發明之光資訊記錄媒體1中，接觸角達 50。以上’較好的是60。以上。硬塗層8上附著有三油酸甘 油酯之狀態示於圖2中。 附著在硬塗層8上之二油酸甘油酿成為直徑為r之粒狀。 該三油酸甘油酯粒子之粒徑r係根據三油酸甘油酯之表面 張力之關係’由硬塗層8與三油酸甘油酯之接觸角σ所決 定。而且，接觸角σ越大，則粒徑r越小。 再者，三油酸甘油酯粒子係以如下方式而附著在硬塗層 8上。（1)首先’將〇.4重量份之關東壤土、1重量份之三油 酸甘油醋與10重量份之曱氧基丙醇現合而製成人工指紋 137535.doc 200941476 液。（2)採取該人工指紋液1 ml，利用旋塗法而塗佈在直徑 為120 mm之聚碳酸酯基板上’最初之3秒鐘係以5〇〇 rpin之 轉速旋轉，之後的3秒鐘係以250 rpm之轉速旋轉而形成塗 膜。（3)將該塗膜在601下乾燥3分鐘，形成人工指紋用之 膜。（4)繼而’準備利用JIS R6252所規定之基材Cw、研磨 材料A、粒度P240之研磨紙對直徑為〗2 mm之碎酮橡膠的 端面進行了研磨的模擬指紋轉印材料。（5)以29 負重將 該模擬指紋轉印材料之端面在人工指紋用膜上按壓1〇秒 ❹ 鐘’以轉印人工指紋液。（6)然後，以29 N之負重將轉印有 人工指紋液之模擬指紋轉印材料在硬塗層8上按壓1〇秒 鐘，使人工指紋液附著。所附著之人工指紋液被硬塗層8 排斥而形成三油酸甘油醋粒子。 若以上述方式附著在硬塗層8上之三油酸甘油酯粒子的 最大粒徑為15 μιη以下，則附著有三油酸甘油酯粒子之狀 態的BD-R亦可獲得良好之記錄特性。最大粒徑為15 μιη# 下時之接觸角σ達50。以上。再者，對於inGro〇veK錄方式 之有機材料系BD-R而言，其條件更加嚴格，因此三油酸 甘油酯粒子之最大粒徑為10 μηι以下，此時之接觸角〇達 60°以上。 (實施例） 繼而’對本發明之效果進行驗證。首先，準備形成硬塗 層之前的BD-R之空白盤（blank disk)。然後準備硬塗劑， 該硬塗劑係將以1 : 1之重量比混合有矽系調平劑與氟系調 平劑之調平劑、與丙烯酸系紫外線硬化樹脂混合而成。繼 137535.doc 200941476 而，利用旋塗法將該硬塗劑塗佈在空白盤之透光層上，然 後照射紫外線而使其硬化，形成硬塗層。 、 在該BD-R之透光層表面上，依照上述（1)〜(6)所記載之 順序使人工指紋液附著。繼而，在附著有人工指紋液之狀 態的BD-R之空白盤上進行資料記錄，測定記錄/再生特性 (符號錯誤率）。記錄/再生特性係使用PlUstec Industri叫股） 製造之ODU-1000，在波長為4〇5 nm、數值孔徑（na)為 0.85、線速為4.92 m/s之條件下測定。又，記錄/再生特性 係將4.0Χ1〇·3作為臨限值，將低於該臨限值之值判定為合 格。又，人工指紋液（三油酸甘油酯）之最大粒徑係通過利 用光學顯微鏡來觀察人工指紋液所附著之直徑12 範圍 内的最大者’並利用配套之千分尺進行測定。再者，接觸 角係在BD-R光盤上滴加2·0 μΐ之三油酸甘油酯（關東化學製 造），並利用接觸角計（協和界面科學（股）製造之CA_X型）來 測定液滴達到平衡狀態時之角度。 (本發明例1)在具備有機材料系記錄層之BD-R的透光層 之表面上’使用含有3.0%之調平劑的硬塗劑來形成硬塗 層。此時之硬塗層相對於三油酸甘油酯之接觸角為71。。 該BD-R之符號錯誤率為1 .〇χ 1 〇·3。又，三油酸甘油酯之最 大粒徑為5 μηι。 (本發明例2)在具備有機材料系記錄層之BD-R的透光層 之表面上’使用含有1.5%之調平劑的硬塗劑來形成硬塗 層。此時之硬塗層相對於三油酸甘油酯之接觸角為62°。 該BD-R之符號錯誤率為3.9x1 0_3。又，三油酸甘油酯之最 137535.doc 200941476 大粒徑為10 μιη。 (本發明例3)在具備無機系材料記錄層之bd-R的透光層 之表面上，使用含有1.0%之調平劑的硬塗劑來形成硬塗 層。此時之硬塗層相對於三油酸甘油g旨之接觸角為5〇〇。 該BD-R之符號錯誤率為2.0x1ο-3。又，三油酸甘油酯之最 大粒徑為15 μιη。 (比較例1)在具備有機知料系記錄層之BD-R的透光層之 表面上’使用含有1 〇%之調平劑的硬塗劑來形成硬塗層。 ❹ 此時之硬塗層相對於三油酸甘油酯之接觸角為51。。該BD· R之符號錯誤率為Ι.ΟχΙΟ2»又，三油酸甘油酯之最大粒徑 為 1 5 μιη。 (比較例2)在具備有機材料系記錄層之bd-R的透光層之 表面上，使用含有0.5%之調平劑的硬塗劑來形成硬塗層。 此時之硬塗層相對於三油酸甘油酯之接觸角為42。。該BD- R之符號錯誤率為5.OxlO·2。又’三油酸甘油酯之最大粒徑 為 20 μιη 0 ® (比較例3)在具備無機材料系記錄層之bd-r的透光層之 表面上，使用含有〇.5〇/。之調平劑的硬塗劑來形成硬塗層。 此時之硬塗層相對於三油酸甘油酯之接觸角為42。。該BD-R之符號錯誤率為3.ΟχΙΟ·2。又，三油酸甘油酯之最大粒徑 為20 μιη。將以上結果歸納於表1中。 [表1] 137535.doc 13 200941476 _記錄層 相對於三油酸甘油酯 之接觸角 三油酸甘油酯之 最大粒徑 符號錯誤率Ιίκ 單位 本發明 例1 一有機 本發明 例2 —有機 |本發明 1-E- |無機 71 62 50 5 10 15 1.00E-03 3.90E-03 2.00E-03 〇 ~~ 根據以上結果可#，若為與三油酸甘油醋之接觸角為 有機... beta bite from I resin. If the contact angle is 60. As described above, the maximum particle diameter at the time of attachment of the artificial fingerprint liquid using triolein as a dispersion medium is 10 μηι or less. If it is at this level, good recording characteristics can be obtained even in the state in which the fingerprint is attached to the organic dye-based BDR using the InGroove recording method. Further, the hard coat layer is formed of a resin containing a lanthanide-based or fluorine-based leveling agent. The more the amount of the leveling agent contained in the resin, the larger the contact angle with the triolein. If the content of the leveling agent is 10% to 3 〇%, the contact angle is 50. Above, it is better if the content of the leveling agent is! 5%~3 〇%, the contact angle is 60° or more. Further, the lanthanide leveling agent and the fluorine-based leveling agent may be used 137535.doc 200941476 alone or in combination. Further, such a hard coat layer can be applied by spin coating to a contact angle of 50 with the triolein on the hardened film. The above is preferably 60. It is formed from the above resin material. [Effects of the Invention] The optical information recording medium of the present invention can obtain good recording characteristics even in a state in which a fingerprint is attached. Such an optical information recording medium does not need to be wiped off, so that the possibility of damage to the light-transmitting layer or the hard coat layer when the fingerprint is erased is reduced. [Embodiment] The embodiment of the optical information recording medium of the present invention will be described with reference to the drawings in the case of BD-R. The optical information recording medium 1 shown in Fig. 1 has a disk-shaped substrate 2 having a width of 0.16 μm and a land of 4 mm having a width of 0.16 μm and a land of 4 mm on one side thereof. a reflective layer 5 formed on one side of the substrate, a recording layer 6 formed on the reflective layer 5, a transparent layer 7 of 0.1 mm thick formed on the recording layer 6, and a light-transmissive layer formed thereon Hard coating g on layer 7. Further, a protective layer 9 made of a transparent inorganic material is formed between the recording layer 6 and the light-transmitting layer 7 as needed. The substrate 2 is a resin substrate having a thickness of 1.1 mm and a diameter of 120 mm. The substrate 2 can be arbitrarily selected to use various materials used as the substrate material of the optical information recording medium. Specific examples thereof include acrylic resins such as polycarbonate and polymethyl methacrylate, and ethylene-based resins such as polystyrene and vinyl chloride copolymers, epoxy resins, amorphous polyolefins, and polyester resins. Ming and other metal 'glass, etc.' can also be used together with these materials. In the above-mentioned material 137535.doc 200941476, from the viewpoints of self-formability, moisture resistance, dimensional stability, and low cost, a thermoplastic resin is preferable, and polycarbonate is particularly preferable. Such a substrate 2 is formed by injection molding. At this time, a stamper ' is provided in the mold to form a spiral groove 3 and a land 4 on the substrate 2. The groove 3 is formed with a gauge of 0.32 μm. Further, since the substrate 2 does not need to transmit light in particular, it can be formed of a material other than the light-transmitting material. The reflective layer 5 is formed of a metal thin film having reflectance south such as Au, Ag, Al, or an alloy of such metals, and is formed by vapor deposition, sputtering, or the like. The recording layer 6 has an organic material-based recording layer using a pigment and an inorganic material-based recording layer using an inorganic material. The organic material-based recording layer is formed by applying a solution obtained by dissolving a dye such as an azo dye or a cyanine dye in a solution such as TFP (tetrafluoropropanyl) by a spin coating method. Inorganic material The recording layer is formed by forming a film of Te_pd, Si_Cu, Ge-Bi or the like by steaming or sputtering. Further, in order to improve the light absorptivity, the inorganic material-based recording layer is formed by sandwiching two dielectric thin films (e.g., ZnS, Si〇2, etc.). When the recording layer 6 is an organic material system, since it is formed by a spin coating method, as shown in FIG. 3, the thickness of the recording layer 6 formed on the trench 3 is larger than that of the recording layer 6 formed on the land 4. Thicker thickness. Therefore, the BD-R of the organic material type employs an InGroove recording method in which a pit is formed in the recording layer 6 formed on the trench 3. In the InGroo ve recording mode, since laser light having a wavelength of 405 nm is irradiated onto a concave portion having a width of 16 Å which is narrower than the wavelength, recording is performed in a state where the diffraction limit is exceeded. Therefore, the recording characteristics are easily affected by the scattered shape of the spot light of the laser light. 137535.doc 200941476 On the other hand, when the recording layer 6 is an inorganic material system, since it is formed by evaporation or sputtering, as shown in FIG. 4, the thickness of the recording layer 6 formed on the trench 3 and the shore are as shown in FIG. The thickness of the recording layer 6 formed on the stage 4 is substantially the same. Therefore, the BD-R of the inorganic material system employs the OnGroove recording method in which the pits are formed in the recording layer 6 formed on the land 4. In the 〇nGr〇〇ve recording method, since the recording layer 6 becomes a convex portion with respect to the laser light, the recording characteristics are less susceptible to the scattering of the spot shape of the laser light. The light transmissive layer 7 is formed of a light transmissive resin. As a method of forming, a curable resin which cures (iv) ultraviolet rays or radiation, such as a squeezing method, is formed into a thickness of (M mm), and a light-transmitting resin having a thickness of 0.1 mm is attached by an adhesive or the like. The method of the sheet. The light transmittance of the light-transmitting layer 7 is 7 μ% or more when the thickness is (M mm and the wavelength is 4〇5 nm 2 and measured by spectrophotometry 4, preferably ❽ or more. Further, when the recording layer 6 is an organic material system, in order to prevent the pigment contained in the recorded layer 6 from diffusing into the light-transmitting layer 7 at the time of film formation of the light-transmitting layer 7, or for forming a shape of 0 The solvent of the hardening resin of the light layer 7 or the solvent contained in the adhesive or the like is infiltrated into the recording layer 6, and the protective layer 9 of the inorganic material is formed between the recording layer 6 and the light-transmitting layer 7. Examples of the material constituting the protective layer 9 include cerium oxide oxide, especially cerium oxide, or oxides such as oxidized, oxidized, and cerium oxide; sulfides such as zinc sulfide and strontium sulfide; nitrides such as cerium nitride; and carbon. Cutting; a mixture of oxide and sulfur, etc. The protective layer 9 is formed by using ruthenium plating or the like. The hard coat layer 8 is formed of a mixture of a Shih-tsu or fluorine-based leveling agent and a curable resin which is cured by ultraviolet rays or a pay-off wire, and is formed by coating by a spin coating method of 137535.doc 200941476. Examples of the lanthanide leveling agent include a cross-linking type lanthanum leveling agent (for example, UCR L93 manufactured by Sakamoto Kyoritsu Chemical Co., Ltd. or FS700 manufactured by oyster sauce), etc. As a fluorine-based leveling agent, cross-linking is exemplified. A fluorine-based leveling agent (for example, F_482 manufactured by D-C or F600 manufactured by oyster sauce), and the like, and examples of the curable resin include an acrylic-based or epoxy-based ultraviolet-curable resin (for example, a Japanese chemical manufacturer) 〇3), etc. The content of the leveling agent in the hard coat layer 8 is expressed as (the amount of the leveling agent) χ 1 〇〇 / (the amount of the leveling agent + the amount of the hardening tree month a) 'is 1 · 〇 %~3.0%, preferably 1 5 %~3.0〇/〇. If the content exceeds 3.0%, the proportion of the leveling agent on the surface of the hard coat layer becomes too large, so the wear resistance is deteriorated and cannot be exhibited. The function of the hardness of the hard coat layer. Therefore, the content of the leveling agent is preferably 3.0% or less. The hard coat layer 8 of the light information recording medium 1 has a function of repelling the skin of the skin as a fingerprint and forming it into a granular shape. This action can be used with the trioleic acid used as a dispersion medium of the artificial fingerprint liquid. In the optical information recording medium 1 of the present invention, the contact angle is 50. The above is preferably 60 or more. The state in which the triolein is adhered to the hard coat layer 8 is shown in In Fig. 2, the dioleic acid glycerin attached to the hard coat layer 8 is made into a granular shape having a diameter r. The particle size r of the triolein particles is based on the relationship between the surface tension of the triolein. It is determined by the contact angle σ of the hard coat layer 8 and the triolein. Moreover, the larger the contact angle σ, the smaller the particle size r. Further, the triolein particles are attached to the hard coat layer 8 in the following manner. (1) First, an artificial fingerprint 137535.doc 200941476 liquid was prepared by combining 4 parts by weight of the off-road loam, 1 part by weight of the oleic acid glycerin and 10 parts by weight of the decyloxypropanol. (2) 1 ml of the artificial fingerprint solution was applied to a polycarbonate substrate having a diameter of 120 mm by spin coating. 'The first 3 seconds was rotated at a speed of 5 rpin, and then 3 seconds. The film was rotated at a speed of 250 rpm to form a coating film. (3) The coating film was dried at 601 for 3 minutes to form a film for artificial fingerprinting. (4) Next, a simulated fingerprint transfer material in which the end faces of the ketone rubber having a diameter of 2 mm were prepared by using the base material Cw, the abrasive material A, and the particle size P240 of the abrasive paper specified in JIS R6252. (5) Pressing the end face of the simulated fingerprint transfer material on the artificial fingerprint film for 1 sec. sec. with 29 load to transfer the artificial fingerprint liquid. (6) Then, the simulated fingerprint transfer material to which the artificial fingerprint liquid was transferred was pressed on the hard coat layer 8 for 1 〇 second with a load of 29 N to cause the artificial fingerprint liquid to adhere. The attached artificial fingerprint liquid is repelled by the hard coat layer 8 to form triolein glycerin particles. When the maximum particle diameter of the triolein particles adhered to the hard coat layer 8 in the above manner is 15 μm or less, the BD-R to which the triolein particles are adhered can also obtain good recording characteristics. The contact angle σ is 50 when the maximum particle size is 15 μιη#. the above. Furthermore, for the organic material system BD-R of the inGro〇veK recording method, the conditions are more stringent, so the maximum particle size of the triolein particles is 10 μηι or less, and the contact angle is more than 60° at this time. . (Example) Then, the effects of the present invention were verified. First, a blank disk of BD-R before the formation of the hard coat layer is prepared. Then, a hard coating agent prepared by mixing a leveling agent of a lanthanoid leveling agent and a fluorine-based leveling agent and an acrylic ultraviolet-ray curing resin in a weight ratio of 1:1 is prepared. The hard coating agent is applied to the light-transmitting layer of the blank disk by spin coating, followed by irradiation with ultraviolet rays to form a hard coat layer, following 137535.doc 200941476. The artificial fingerprint liquid is adhered to the surface of the light-transmitting layer of the BD-R in the order described in the above (1) to (6). Then, data recording was performed on a blank disk of BD-R to which the artificial fingerprint liquid was attached, and the recording/reproduction characteristics (symbol error rate) were measured. The recording/regeneration characteristics were measured using an ODU-1000 manufactured by PlUstec Industri Co., Ltd. at a wavelength of 4 〇 5 nm, a numerical aperture (na) of 0.85, and a line speed of 4.92 m/s. Further, the recording/reproduction characteristics have 4.0 Χ 1 〇 · 3 as a threshold value, and a value lower than the threshold value is determined as a qualifier. Further, the maximum particle size of the artificial fingerprint liquid (triolein) was measured by observing the largest of the diameters of the artificial fingerprint liquid by 12 using an optical microscope and measuring it with a matching micrometer. Further, the contact angle was obtained by adding 2·0 μΐ of triolein (manufactured by Kanto Chemical Co., Ltd.) to a BD-R disc, and using a contact angle meter (CA_X type manufactured by Kyowa Interface Science Co., Ltd.) to measure the liquid. The angle at which the drop reaches equilibrium. (Inventive Example 1) A hard coat layer was formed by using a hard coat agent containing 3.0% of a leveling agent on the surface of a light-transmitting layer of BD-R having an organic material-based recording layer. The contact angle of the hard coat layer with respect to triolein was 71 at this time. . The symbol error rate of the BD-R is 1 .〇χ 1 〇·3. Further, the maximum particle size of the triolein is 5 μηι. (Inventive Example 2) A hard coat layer was formed by using a hard coat agent containing 1.5% of a leveling agent on the surface of a light-transmitting layer of BD-R having an organic material-based recording layer. The contact angle of the hard coat layer with respect to the triolein at this time was 62°. The symbol error rate of the BD-R is 3.9x1 0_3. Also, the highest glycerol triglyceride 137535.doc 200941476 large particle size of 10 μιη. (Inventive Example 3) A hard coat layer was formed on the surface of the light-transmitting layer of bd-R having the inorganic-based material recording layer by using a hard coat agent containing 1.0% of a leveling agent. At this time, the hard coat layer had a contact angle of 5 Å with respect to the triolein. The symbol error rate of the BD-R is 2.0x1ο-3. Further, the maximum particle size of the triolein is 15 μηη. (Comparative Example 1) A hard coat layer was formed by using a hard coat agent containing 1% by weight of a leveling agent on the surface of a light-transmitting layer of BD-R having an organic-based recording layer.接触 The contact angle of the hard coat layer with respect to triolein is 51 at this time. . The symbol error rate of the BD·R is Ι.ΟχΙΟ2», and the maximum particle size of the triolein is 15 μm. (Comparative Example 2) A hard coat layer containing a 0.5% leveling agent was used on the surface of the light-transmitting layer containing bd-R of the organic material-based recording layer to form a hard coat layer. The contact angle of the hard coat layer with respect to the triolein at this time was 42. . The symbol error rate of the BD-R is 5.OxlO·2. Further, the maximum particle diameter of the triolein was 20 μηη 0 ® (Comparative Example 3), and the surface of the light-transmitting layer having the inorganic material-based recording layer bd-r was used to contain 〇.5〇/. A hard coating agent of the leveling agent to form a hard coat layer. The contact angle of the hard coat layer with respect to the triolein at this time was 42. . The symbol error rate of the BD-R is 3.ΟχΙΟ·2. Further, the maximum particle size of the triolein is 20 μηη. The above results are summarized in Table 1. [Table 1] 137535.doc 13 200941476 _The contact angle of the recording layer with respect to the triolein is the maximum particle size of the triolein symbol error rate Ιίκ unit of the present invention Example 1 an organic inventive example 2 - organic | Invention 1-E- | Inorganic 71 62 50 5 10 15 1.00E-03 3.90E-03 2.00E-03 〇~~ According to the above results, #, if the contact angle with triolein glycerin is organic

50。以上、較好的是60。以上之硬塗層，則可獲得即使在附 著有指紋之狀態下亦可獲得良好之記錄特性的BD_R。 再者’本發明之實施形態以BD-R為例進行了說明，亦 可應用於CD-R或者DVD±R等其他光資訊記錄媒體。 【圖式簡單說明】 圖1係將光資訊記錄媒體之剖面之一部分放大而示意性 表示的部分剖面圖。 圖2係表示硬塗層上之三油酸甘油酯狀態的示意圖。 圖3係用以說明InGroove記錄方式之示意剖面圖。 圖4係用以說明OnGroove記錄方式之示意剖面圖。 【主要元件符號說明】 1 光資訊記錄媒體 2 基板 3 溝槽 4 岸台 5 反射層 6 記錄層 137535.doc -14- 200941476 7 透光層 8 硬塗層 9 保護層50. The above is preferably 60. The above hard coat layer can obtain BD_R which can obtain good recording characteristics even in the state where a fingerprint is attached. Further, the embodiment of the present invention has been described by taking BD-R as an example, and can also be applied to other optical information recording media such as CD-R or DVD±R. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a partial cross-sectional view schematically showing a portion of a cross section of an optical information recording medium in an enlarged manner. Figure 2 is a schematic view showing the state of the triolein on the hard coat layer. Figure 3 is a schematic cross-sectional view for explaining the recording mode of InGroove. Figure 4 is a schematic cross-sectional view for explaining the OnGroove recording mode. [Main component symbol description] 1 Optical information recording medium 2 Substrate 3 Groove 4 Shore 5 Reflective layer 6 Recording layer 137535.doc -14- 200941476 7 Light transmissive layer 8 Hard coating 9 Protective layer

137535.doc •15137535.doc •15

Claims (1)

200941476 , 七、申請專利範面： 1. 一種光資訊記錄媒體，其具有記錄層以及使照射於該記 錄層之雷射光通過之透光層，其特徵在於： 在上述透光層之表面形成有硬塗層，且上述硬塗層係 與硬化覆膜上之粒狀三油酸甘油酯的接觸角達50。以上之 樹脂。 2.如凊求項1之光資訊記錄媒體，其中上述硬塗層係與硬 . 化覆膜上之三油酸甘油酯的接觸角達60。以上之樹脂。 ,3·如請求項1之光資訊記錄媒體，其中形成上述硬塗層之 樹脂含有矽系或氟系調平劑，上述調平劑之含量為 1.0%〜3.0% 〇 4.如請求項2之光資訊記錄媒體，其_形成上述硬塗層之 樹脂含有矽系或氟系調平劑，且上述調平劑之含量為 1.5%〜3.0%。 5· 一種光資訊記錄媒體之製造方法，其係製造具有記錄層 以及使照射於該記錄層之雷射光通過之透光層的光資訊 _ 6己錄媒體者’其特徵在於包括如下步驟： 準備上述光資訊記錄媒體； · 在上述光資訊記錄媒體之上述透光層表面，利用旋塗 法來塗佈與硬化覆膜上之三油酸甘油醋的接觸角達5〇〇以 上之樹脂材料；以及 使上述樹脂材料硬化而形成硬塗層。 6.如請求項5之光資訊記錄媒體之製造方法，其中上述樹 脂材料係與硬化覆膜上之三油酸甘油酯的接觸角達6〇。以 上之樹脂材料。 137535.doc200941476, VII. Patent application plane: 1. An optical information recording medium having a recording layer and a light transmissive layer for passing laser light irradiated to the recording layer, wherein: a surface of the light transmissive layer is formed The hard coat layer has a contact angle of 50 with the above-mentioned hard coat layer and the particulate triolein on the hardened film. The above resin. 2. The optical information recording medium of claim 1, wherein the hard coat layer has a contact angle of 60 with the triolein on the hard coating. The above resin. 3. The optical information recording medium of claim 1, wherein the resin forming the hard coat layer contains a lanthanide or fluorine-based leveling agent, and the content of the leveling agent is 1.0% to 3.0% 〇 4. As claimed in claim 2 In the light information recording medium, the resin forming the hard coat layer contains a lanthanide-based or fluorine-based leveling agent, and the content of the leveling agent is 1.5% to 3.0%. 5. A method of manufacturing an optical information recording medium, which is to manufacture a light information having a recording layer and a light transmissive layer through which the laser light irradiated to the recording layer passes. The present invention includes the following steps: The optical information recording medium; wherein a resin material having a contact angle of 5 Å or more with the triolein glycerin on the cured film is applied to the surface of the light transmissive layer of the optical information recording medium by a spin coating method; And hardening the above resin material to form a hard coat layer. 6. The method of producing a light information recording medium according to claim 5, wherein the resin material has a contact angle with the triolein on the hardened film of 6 Å. Above the resin material. 137535.doc
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