TW558720B - Optical information recording medium - Google Patents

Optical information recording medium Download PDF

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Publication number
TW558720B
TW558720B TW087111359A TW87111359A TW558720B TW 558720 B TW558720 B TW 558720B TW 087111359 A TW087111359 A TW 087111359A TW 87111359 A TW87111359 A TW 87111359A TW 558720 B TW558720 B TW 558720B
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Taiwan
Prior art keywords
light
recording
absorbing layer
light absorbing
layer
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TW087111359A
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English (en)
Inventor
Yoshikazu Takagishi
Takanori Yoshizawa
Emiko Hamada
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Taiyo Yuden Kk
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Publication of TW558720B publication Critical patent/TW558720B/zh

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    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
    • G11B7/24Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
    • G11B7/24Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/242Record 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
    • G11B7/244Record 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
    • G11B7/246Record 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
    • G11B7/247Record 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
    • G11B7/2472Record 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
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
    • G11B7/24Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/242Record 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
    • G11B7/244Record 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
    • G11B7/245Record 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 a polymeric component
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
    • G11B7/24Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/242Record 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
    • G11B7/244Record 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
    • G11B7/246Record 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
    • G11B7/248Record 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 porphines; azaporphines, e.g. phthalocyanines
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
    • G11B7/24Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252Record 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
    • G11B7/253Record 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
    • G11B7/2533Record 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
    • G11B7/2534Record 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 polycarbonates [PC]
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
    • G11B7/24Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252Record 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
    • G11B7/254Record 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
    • G11B7/2542Record 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
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
    • G11B7/24Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252Record 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
    • G11B7/258Record 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 reflective layers
    • G11B7/2585Record 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 reflective layers based on aluminium
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
    • G11B7/24Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252Record 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
    • G11B7/258Record 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 reflective layers
    • G11B7/2595Record 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 reflective layers based on gold
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00Stock material or miscellaneous articles
    • Y10S428/913Material designed to be responsive to temperature, light, moisture
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S430/00Radiation imagery chemistry: process, composition, or product thereof
    • Y10S430/146Laser beam
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/21Circular sheet or circular blank

Landscapes

  • Optical Record Carriers And Manufacture Thereof (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)

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558720 A7 _ B7 五、發明説明(i ) 〔發明之詳細説明〕 (請先閱讀背面之注意事項再填寫本頁} 〔發明所屬之技術領域〕 本發明爲關於光資訊記錄媒體,特別爲關於在透光性 基板上,至少具有光吸收層及光反射層之可書寫的光資訊 記錄媒體。 〔先前之技術〕 先前之可書寫的光資訊記錄媒體,例如爲特公平 7 - 1 0 5 0 6 5號般,於形成環旋狀之具有預凹槽之透 光性基板#,設置有機色素所組成之光吸收層,並且於此 光吸收層上,再設置金層膜等所組成之光反射層爲其基本 構造。 經由對此光資訊記錄媒體,由其基板側照射如激光等 之記錄光,令光吸收層吸收能量,使得光吸收層中之色素 發熱、分解、及基板之熱變形等形成記錄槽,並且進行資 訊之記錄。 此種可書寫之光資訊記錄媒體,一般已知爲「CD — R」,此CD—R因爲與再生專用之CD(光碟)及CD - ROM等之光碟的互換性高,且具有可僅暫時記錄並將 此記錄消去之特徵,故特別於資訊處理領域中已變成一般 性,且廣泛普及。 但是,隨著資訊數據之增大,及資訊處理之複雜化及 高度化,令光資訊記錄媒體之記錄速度及讀出速度於近幾 本紙張尺度適用中國國家標準(CNS ) Α4規格(210X297公釐) -4 - 558720 A7 B7 五、發明説明(2 ) (請先閲讀背面之注意事項再填寫本頁) 年發展出高速度化,且於CD - R市場中,於1 9 9 6年 終爲止,已一般販售通常爲6倍速記錄機及1 5倍速讀出 用之CD—ROM驅動器。 於高速下進行記錄之情形中,例如若爲6倍速,令線 速爲6倍,並於相當E FM訊號之各槽長度η T時間之約 1/6時間照射高輸出功力之激光,其結果取得記錄規定 範圍之槽長度3 Τ〜1 1 Τ爲止之訊號之光資訊記錄媒體 〇 因此,運用控制記錄機中之各Τ的記錄槽長度,則可 要求先前之等速記錄以上之精確度。 又,於所記錄之媒體,亦因爲必須僅於先前之數分 之一分之時間中形成指定長度之各槽,故記錄時之發熱及 熱干涉及影響乃較先前格外變大。 因此,具有令起因於此些高速記錄時所發生之熱不均 勻性之顫動惡化之問題。 即,於前述光吸收層之膜的複因素折射率之虛數部視 爲k,該光吸收層之平均膜厚視爲d a v時,於欲記錄波 長下,若k及d a v大,則無法充分取得反射率。相反地 ,若k及d a v小,則雖然可充分取得反射率,但具有令 記錄感度降低,且即使令記錄激光變成最大功率,亦無法 進行充分記錄之問題。 若上述k及d a v大,則於作爲記錄媒體之光碟中並 無法取得反射率R t。p爲6 5 %以上。 相反地,若k及d a v小,則無法以十分低的激光功 本紙張尺度適用中國國家標準(CNS ) A4現格(210X297公釐) -5 - 558720 A7 _ B7_ 五、發明説明(3 ) 率進行記錄,並且經由顫動之增加等,而具有難以應對如 前述之高速記錄之問題。 (請先閲讀背面之注意事項再硪寫本頁) 〔發明所欲解決之問題〕 本發明爲鑑於如上述之各問題,以提供經由提高對於 記錄光之感度而可高速記錄之光資訊記錄媒體爲其課題。 又,本發明爲以提供經由提高對於記錄光之感度,而 可爲感度良好,且即使以近似的異種激光進行記錄,亦不 會令記錄特性變化,即感度差少之光資訊記錄媒體爲其課 又,本發明爲以提供可爲充分之反射率及安定記錄, 且顫動低之光資訊記錄媒體爲其課題。 · 又,本發明爲以提供經由對於光吸收層之膜的複因素 折射率之虛數部k,光吸收層之平均膜厚d a v,及其關 連之吸光度A作成適正之範圍,使得記錄感度及再生特性 良好之光資訊記錄媒體爲其課題。 〔解決課題之手段〕 即,本發明爲著眼於將k及d a v,及由其所得之吸 光度A作成適正之範圍,其爲具有透光性之基板,及於此 基板上設置並含有經由吸收激光記錄光之色素所構成之光 吸收物質之光吸收層,及於此光吸收層上設置並且反射激 光之光反射層,並且經由上述光吸收層照射上述記錄光, 而將資訊記錄之光資訊記錄媒體,其特徵爲上述光吸收層 本紙張尺度適州中國國家標準(CNS ) A4規格(210X297公釐) -6- 558720 A7 B7 五、發明説明(4 ) 之上述記錄光波長中之吸光度視爲A (Ab s )時爲 0 · 13SAS0 · 21,且於上述記錄光波長中之上述 (許先閱讀背面之注意事項再填艿本頁)
光吸收層之膜的複因素折射率之虛數部視爲1^ ’該光吸收 層之平均膜厚視爲dav (nm)時,爲6 · 0S k · d a vS 1 2 · 0爲其特徵之光資訊記錄媒體。 上述記錄激光波長中,上述光吸收層之膜的複因素折 射率之虛數部k,可在上述光吸收層中添加令〇 · S 2 · 0之材料。 上述光歧收層之平均膜厚d a v爲4 0 nmS d a v S 8 5 n m 〇 上述光吸收物質爲具有圖2所示之構造式’且可含有 80莫耳%以上之苯系花青色素。 · 於本發明之光資訊記錄媒體中,因爲光吸收層之吸光 度視爲A (Abs)時,爲 0 · 13SAS0 · 21,並 且於記錄光波長中之光吸收層之膜的複因素折射率之虛數 部視爲k,光吸收層之平均膜厚視爲dav時,爲6 · 0 Sk · davl2 . 0,故可作成記錄感度及再生特性良 好之光資訊記錄媒體。 以下,更具體說明。 圖1爲本發明之光資訊記錄媒體1之截面圖,光資訊 記錄媒體1爲具有透光性之基板2,於基板2上形成之光 吸收層3,於光吸收層3上形成之光反射層4,及於光反 射層4上形成之保護層5。 於基板2上,形成螺旋狀之預凹槽6。於預凹槽6之 本紙張尺度適用中國國家標準(CNS ) Α4規格(210X297公釐) 558720 A7 _B7_ 五、發明説明(5 ) 左右,即於預凹槽6以外之部分爲位有平台7。 (讀先閲讀背面之注意事項再填寫本頁) 光吸收層3爲含有吸收激光L1之單一或複數色素所 構成之主要光吸收物質,及視需要含有令此主要光吸收物 質安定化之安定劑,其他之添加劑等。 所謂安定劑(光安定劑),爲指在波長9 0 0〜 1 1 0 0 nm之近紅外線區域具有膜之吸收波峰,且在短 波或主要光吸收物質之吸收區域至長波長或波長1 5 0 0 nm以上之紅外線區域爲止,具有平穩的微弱光吸收之化 合物,因此無法期待對於記錄感度之提高效果,但爲令主 要光吸收物質安定化效果高之化合物。 此安#劑可使用銨鹽及二硫苄基等之二硫醇複合物等 〇 * 此安定劑於光吸收層3中,以重量比例必須含有 0 · 1〜30wt%,較佳爲1〜25wt%,更佳爲5 〜2 0 w t % 〇 當,於光吸收層3中,塗布主要光吸收物質,長波長 吸收劑及安定劑之混合劑時所用之溶劑,含有0 · 0 1〜 1 · Owt%左右亦無妨。 此時之塗布溶劑可使用異丙醇、丁醇等之醇類、甲基 溶纖劑、乙基溶籤劑等之烷氧基醇類、雙丙酮醇、乙醯丙 酮等之酮醇、乳酸乙酯、乳酸甲酯等之乳酸酯類,2,2 ,3,3,一四氟丙醇等之氟化醇類等,但不限定於此。 尙,於光吸收層3之成膜中,一般由泛用性方面而言 ,則爲使用旋轉塗層法,但視需要,可使使用浸塗法,或 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) 558720 A7 B7 五、發明説明(6 ) 澱積法等亦無妨。 (誚先閱讀背面之注意事項再填寫本頁) 又,於光吸收層3中,考慮塗層時之塗布性而添加樹 脂黏合劑亦無妨。 添加之樹脂可例如爲硝基纖維素等之熱塑性樹脂、熱 塑性彈性體等之樹脂、及液狀橡膠等。 具體而言,可列舉異丁烯、馬來酸酐共聚物、烯酸共 聚物、聚氯丙烯、聚環氧乙烷、聚醯胺、尼龍、香豆酮樹 脂、酮樹脂、醋酸乙烯酯、聚苯乙烯、PVA (聚乙烯醇 )、PVE (聚乙烯酯)等。 纖維素衍生物可列舉羧甲基纖維素、硝基纖維素、 HPC (-丙基纖維素)、HEC (羥乙基纖維素)、 MC (甲基纖維素)、EC (乙基纖維素)、EHEC( 乙基羥乙基纖維素)、CMEC (羧甲基乙基纖維素)等 〇 寡聚物可舉寡聚苯乙烯、甲基苯乙烯寡聚物等。 彈性體橡膠可列舉苯乙烯嵌段共聚物、胺基甲酸酯系 熱塑性彈性體等。 尙,基板2與光吸收層3爲經由第一層界8而互相接 連。光吸收層3與光反射層4爲經由第二層界9而接連。 光反射層4與保護層5爲經由第三層界10而接連。 如圖所示,對光資訊記錄媒體1照射記錄光(記錄用 激光)L 1時,則光吸收層3爲經由吸收此激光L 1之能 量而發熱,並於基板2側產生熱變形且形成槽1 1。又, 於記錄部分,經由光吸收層3中之色素的發熱分解,而令 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) -9- 558720 A7 B7 五、發明説明(7 ) 槽11部分之拆射率變化。 經由對於此槽1 1部分,照射再生光(再生用激光) L 2,造成槽1 1部分中之基板2的熱變形,及經由槽 1 1之部分和非槽部(平台7 )之成爲折射率差原因之光 學性位相差所產生之光的折回,而取得槽對比,並且讀取 資訊。 尙,所謂主要光吸收物質(主要光吸收劑)爲指於記 錄時將激光L 1吸收分解,並且作出光吸收層3內之折射 率變化,成爲槽1 1形成原因之物質。 上述之光吸收物質,可含有具有圖2所示構造式之苯 系花青色素。 上述苯並系花青色素例如爲苯並青定二羰花青”光吸 收層可含有8 0莫耳%以上其吸光度之膜波峰波長爲 7 1 0 nm以上之苯並青定二羰花青。 光吸收層3之吸光度視爲A (Abs)時,爲 · 0.13SAS0.210 於記錄光L 1之波長中,光吸收層3之膜的複因素折 射率之虛數部視爲k,光吸收層3之平均膜厚視爲d a v 時,爲 6 · OSk · dav$12 · 0。 k · d a v爲表示光吸收層3中之光吸收程度之參數 ,先前爲例如k = 0 · 05,dav=l〇〇nm,因此 k · dav = 5 . 0左右,但於本發明中,平均膜厚 d a v變得更小,且光吸收層3之膜的複因素折射率之虛 數部k變得更大。 -10- (請先閱讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家標準(CNS ) Α4規格(210X297公釐) 558720 A7, _B7 ___ 五、發明説明(8 ) 即,可作成 40Sdav (nm) $85,及 6 · 0 Sk*davS12.0o 平均膜厚d a v爲4 0 nm以下,則難取得符合CD 規格之變調度60%。又,dav爲85nm以上,則因 爲於色素膜之蓄熱效果變大,故令再生時之顫動特性惡化 ,且結果難以取得充分的再生安定性。 若換言之,則即使光吸收層3之膜厚d a v大,但若 膜的複因素折射率之虛數部k小,則可令記錄時之槽1 1 內呈現適正的熱狀態,可取得安定之記錄槽1 1。 又,相反地,即使膜厚d a v小,但若膜之複因素折 射率之虛_部k大,則因爲可在槽內進行充分的色素分解 ,故可取得安定之記錄槽11。 · A若小於0 · 13,或者k · dav若小於6 · 0, 則記錄感度惡化。 A若大於0 · 21,或者k · dav若大於12 · 0 ,則激光之吸收程度變成過大,令顫動變差,且亦難取得 反射率。 好浐部中成T.消於合竹扣印ii 經由易於取得反射率,而可採用較低費用之鋁(A 1 )或銀(Ag)等,代替先前昂貴的金(Au) ’作爲反 射層4之材料。 再者,圖3爲光吸收層3對於波長之吸光度A之圖示 ,如圖所示,一般雖然隨著波長之增加而令吸光度降低, 但經由添加記錄光L1之波長中k爲呈0·ISkS 2 · 0之長波長吸收劑,則可令吸光度增加(圖中點線) -11 - (讀先閲讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) 558720 A7 B7 五、發明説明(9 ) (請先閲讀背面之注意事項再填寫本頁) ,經由兩者之合成調整吸光度,則可於記錄光L 1之波長 全區域中,令k.dav、 A(Abs)爲在上述之範圍 內。 作爲此類添加材料,例如可使用如圖4所示之次甲基 鏈碳數7之靛三羰花青色素,或如圖5所示之次甲基鏈碳 數5之聚次甲基色素、或酞菁等之卟啉系色素等。 〔實施例1〕 其次,依據本發明之實施例,說明光資訊記錄媒體。 以注模法取得形成寬0 · 55#m、深度185nm 、槽16 之螺旋狀預凹槽6之厚度1 · 2mm、外徑 1 20nm、內徑1 5nm之聚碳酸酯製之基板2。· 其次,將作爲記錄色素之圖6所示構造之苯並靛二羰 花青色素(日本感光色素硏究所(株)製,品號NK_ 3386),以30克/升溶解於雙丙酮醇中,並將其於 上述基板2上塗布,形成膜厚d a v爲6 9 nm之色素膜 層(光吸收層3 )。 此時,此膜於波長7 8 0 nm中之吸光度A爲 0 · 2 0 ( A b s )。 又,此膜之光學常數(膜之複因素折射率之)虛數部 k = 0· 1,因此,k*dav = 6.9。 於此附有色素膜之基板2上,以RF濺鍍法形成由金 (Au )所組成之厚度1 0 〇 nm之光反射層4,並且於 此光反射層4上,將紫外線硬化性樹脂(大日本油墨化學 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) -12 - 558720 A7 B7 五、發明説明(10) 工業(株)製SD — 2 1 1 )旋轉塗層,並且照射紫外線 ,形成厚度10#m之保護層5。 如此處理所得之光資訊記錄媒體1,於波長780 nm中之反射率爲Rg = 70 . 5% R,於使用利用波 長7 8 0NM之記錄機(Pulsetec公司(株)製DDU -1 0 0 0 ),以線速度1 · 2m/s下記錄時,變調度 Iii/It〇P=75.4%、 l3/It〇P=33.2、
RhP=68 · 2% R,顫動値爲在3T〜1 IT全區 域中,平台7及槽1 1均經由所謂6 . 2mW之低功率記 錄取得3 0n s以下之良好的I圖型信號。 「It/P」爲CD之再生信號中的最大反射光量,「 I χχ」爲對應於經由所記錄最長槽而折回返回物鏡之反射 光量,與經由非槽部而反射返回物鏡之反射光量之差的光 學性變調成分、「I 3」爲對應於所記錄最短槽而折回返回 物鏡之反射光量,與經由非槽部而反射返回物鏡之反射光 量之差的光學性變調成分。 赶浐部中失^.準而m 1消灸合竹妇卬Ϊ1 〔實施例2〕 於實施例1所使用之同樣的基板2,將實施例1同樣 構造之苯並靛二羰花青色素(日本感光色素硏究所(株) 製,品號NK — 3386,圖6) 97重量份,圖5所示 之聚次甲基色素3重量份,以3 0克/升溶解於雙丙酮醇 中,並將其於上述基板2上塗布,形成膜厚d a v爲6 5 nm之色素膜層(光吸收層3)。 -13 - (請先閱讀背面之注意事項再填寫本頁) 本紙張尺度適中國國家標準(CNS ) A4規格(210X297公釐) 558720 A7 B7 五、發明説明(n ) 此時,此膜·於波長7 8 0 n m及7 9 0 n m中之吸光 度A分別爲 0 · 20 (Abs)及 0 · 18 (Abs)。 {諳先閲讀背面之注意事項再填寫本頁} 又,圖5所示之聚次甲基色素於波長7 8 0 nm及 7 9 0 nm中之複因素折射率之虛數部k分別舄0 · 9 0 及 0 · 9 3。 又,上述色素膜層(光吸收層3 )於波長7 8 0 n m 及7 9 0 nm中之複因素折射率之虛數部分別爲k73〇 = 0 · 11 及 k79〇=〇 · 10,因此,於波長 780nm 及790nm中之k · dav分別爲7 · 15及6 · 50 〇 於此_有色素膜之基板2上,與實施例1同樣地,以 RF濺鏟法,以金(Au)形成光反射層4,及以紫外線 硬化性樹脂形成保護層5。 如此處理所得之光資訊記錄媒體1,於波長7 8 0 nm及7 9〇nm中之反射率分別爲Rg78〇=71 · 〇 % R及Rg79〇=70·2%,於使用利用波長780 nm及7 9 0 nm激光之記錄光(Yamaha (株)製C D -R 1 0 0 0 ),線速度4· 8m/s下進行4倍速記錄時 ,變調度及反射率R t ο p於以波長7 8 0 nm激光記錄 時爲 2%、 I3/IhP = 39.0%、RhP=67.3% R,於以波長790 nm激光記錄時爲 I ιι/ϊ tcP=7 8 · 4、I 3/ 1 t〇p=34 · 1%、Rt〇P=68 · 2 R,各情況之 顫動値爲3T〜1 IT全區域中,平台7及槽1 1均可取 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) -14 - 558720 A7 B7 五、發明説明(12) 得3 3 n s以下之良好的I圖型信號。 (請先閲讀背面之注意事項再填寫本頁) 又,此時之記錄,於波長7 8 0 n m之情況爲 12·OmW,於波長790nm之情況爲12·5mW ,可在相對於激光之最高輸出功率値16·OmW之充分 低的記錄功率下進行記錄。 〔實施例3〕 將作爲記錄色素之圖2所示構造之苯並系花青色素中 ,Ri = - ( C Η 2 ) 3-. R 2 = C Η a . Y = H、X ' = I _之色素(日本感光色素硏究所(株)製,品號NK -3251),以23克/升溶解於雙丙酮醇中,並於實施 例1同樣之方法所得之基板2上塗布,形成膜厚d a* v爲 46nm之色素膜層(光吸收層3)。 此時,此膜於波長7 8 0 nm中之吸光度A爲 0 · 1 4 ( A b s )。 又,此膜之光學常數(膜之複因素折射率之)虛數部 k = 0 · 1,因此,k · dav = 6 · 0。 於此附有色素膜之基板2上,與實施例1同樣地,以 RF濺鍍法,以金(Au )形成反射層4,及以照射紫外 線硬化性樹脂形成,保護層5。 如此處理所得之光資訊記錄媒體1,於波長780 nm中之反射率爲Rg = 73 . 5% R,於使用利用波 長7 8 ONM之記錄機(Pulsetec公司(株)製DDU — 1〇〇〇),以線速度1·2m/s下記錄時,變調度 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) -15· 558720 A7 B7_ 五、發明説明(13) Ιη/Ι …=60 · 8%、13/1 …=30 · 1、 RhP=71.3% R,顫動値爲在3T〜11T全區 域中,平台7及槽1 1均經由所謂7 · 4mW之低功率記 錄取得3 0 n s以下之良好的I圖型信號。 〔實施例4〕 將作爲記錄色素之與實施例1同樣之色素,以3 5克 /升溶解於雙丙酮醇中,並於實施例1同樣方法所得之基 板2上塗布,形成膜厚d a ν爲8 2 nm之色素膜層(光 吸收層3 )。 此時丨此膜於波長7 8 0 nm中之吸光度A爲 0 · 2 1 ( A b s ) 〇 · 又,此膜之光學常數(膜之複因素折射率之)虛數部 k = 〇 · 1,因此,k· dav = 8 · 2。 於此附有色素膜之基板2上,與實施例1同樣地,以 RF濺鍍法,以金(A u )形成光反射層4,及以紫外線 硬化性樹脂形成保護層5。 如此處理所得之光資訊記錄媒體1,於波長7 8 0 nm中之反射率爲Rg = 68 · 2% R,於使用利用波 長780NM之記錄機(Pulsetec公司(株)製DDU — 1000),以線速度1·2m/s下記錄時,變調度· Iii/It〇p==8 3 ///It〇p==36 S s R"p=65.2% R,顗動値爲在3T〜11T全區 域中,平台7及槽1 1均經由所謂6 · OmW之低功率記 -16- (讀先閲讀背面之注意事項再填寫本頁) 本紙乐尺度適用中國國家標準(CNS ) A4規格(210X297公釐) 558720 A7 ___B7____ 五、發明説明(14) 錄取得3〇n s以下之良好的I圖型信號。 〔實施例5〕 以注模法取得形成寬0 · 4//m、深度100nm、 槽0 · 8#m之螺旋狀預凹槽6之厚度0 · 6mm、外徑 120nm、內徑15nm之聚碳酸酯製之基板2。 其次,將作爲記錄色素之1 一正戊基一 3,3 -二甲 基一 2 —〔3 —(1 一正戊基一 3,3 —一甲基一 2 —一 氫伸丨11朵基)一 1 一丙嫌基一 3 Η —二氯朵’鐵高氯酸 鹽(日本感光色素硏究所(株)製,品號ΝΚ - 4 3 2 0 ),以39克/升溶解於雙丙酮醇中,並將其於上述基板 2上塗布,形成膜厚d a ν爲7 1 nm之色素膜層(·光吸 收層3 )。 此時,此膜於波長6 3 5 nm中之吸光度A爲 0 · 1 8 ( A b s ) 〇 又,此膜之光學常數(膜之複因素折射率之)虛數部 k = 0· 1,因此,k*dav = 7· 1。 於此附有色素膜之基板2上,以RF濺鍍法形成由金 (Au)所組成之厚度l〇〇nm之光反射層4,並且於 此光反射層4上,將紫外線硬化性樹脂(大日本油墨化學 工業(株)製SD - 2 1 1)旋轉塗層,並於其上.將厚度 0 · 6mm,外徑1 20mm,內徑1 5mm之聚碳酸酯 製支持基板予以重合,且由支持基板側照射紫外線,令兩 個基板黏合。 (誚先閱讀背面之注意事項再填寫本頁)
、1T _· 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) -17- 558720 A7 B7 五、發明説明(15 對於如此處’理所得之光資訊記錄媒體1,使用登載波 長635nm半導體激光之記錄機,以線速度3.5m/ s下進行記錄時,變調度I14/I"p=62 · 4%, R"P=60·3%,且可在記錄功率11·OmW下進 行具有良好之顫動特性之記錄。 〔比較例1〕 將實施例3所用之色素(日本感光色素硏究所(株) 製,品號NK—3251),以20克/升溶解於雙丙酮 醇中,並於實施例1同樣方法所得之基板2上將其塗布, 形成膜厚dav爲45nm之色素膜層(光吸收層3)。 此時,此膜於波長780nm中之吸光度A爲· 0 · 1 3 ( A b s ) 〇 又,此膜之光學常數(膜之複因素折射率之)虛數部 k 0.13,因此,k.dav=5.9 (#汔閱讀背面之注意事項再本S ) 十 Jk i: 又:) >/; f Λ 於此附有色素膜之基板2上,與實施例1同樣地’以 RF濺鍍,以法金(Au)形成光反射層4 ’及以照射紫 外線硬化性樹脂形成,保護層5。 如此處理所得之光資訊記錄媒體1,於波長7 8 0 nm中之反射率爲Rg = 74 · 3% R,於使用利用波 長780nm之記錄機(Pulsetec公司(株)製D D U -1000),以線速度1·2m/s下記錄時’變調度 2%、Ι3/Ι"ρ=29·2% ,均無法滿足CD規格。 本紙张尺度速州中囚國家標率(CNS ) A4規格(210X 297公釐) -18 - 558720 A7 B7_ 五、發明説明(16) 又,此時之記錄功率亦需要8 nW以上之高功率。 (請先閲讀背面之注意事項再填寫本頁) 〔發明之效果〕 如上述若依據本發明,經由令平均膜厚dav,膜之 複因素折射率之虛數部K,及吸光度A限定於指定之範圍 ,則可進行充分之反射率及安定之記錄,爲特性更優異之 光資訊記錄媒體。 〔圖面之簡單說明〕 〔圖1〕依據本發明之光資訊記錄媒體1之截面圖。. 〔圖g〕同,示出可採用作爲主光吸收物質之苯並靛 二羰花青色素之構式式之圖。 - I圖3〕同,光吸收層3對於波長之吸光度A之圖。 〔圖4〕同,示出次甲基鏈碳數7之靛三羰花青色素 之構造式之圖。 〔圖5〕同,示出次甲基鏈碳數5之聚次甲基色素之 構造造式之圖。 〔圖6〕同,示出實施例1,2,4所用之苯並靛二 羰花青色素(日本感光色素硏究所(株)製,品號NK — 3 3 8 6 )之構造式之圖。 〔符號之說明〕 1 光資訊記錄媒體(圖1 ) 2 透光性之基板 3 光吸收層 本紙張尺度適/1】中國國家標準(CNS ) A4規格(210X297公釐) ~ 558720 A7 B7 明説明( 17) 4 光反射層 5 保護層 6 螺旋狀之預凹槽 7 平台 8 第一層界 9 第二層界 1 0 第三層界 1 1 槽 L 1 記錄光(記錄用激光 L 2 再生光(再生用激光 K 於記錄L1之波長中 (請先閱讀背面之注意事項再填艿本頁) 因素折射率之虛數部 d a v 光吸收層3之平均膜厚(nm) A 光吸收層3之吸光度(Abs) 、1Τ #1 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) -20-

Claims (1)

  1. 558720 A8 B8 C8 D8 頃清秦員的示,衣寰修正後是否變吏原實質内容 經濟部智慧財產局員工消費合作社印製 L·..…-....................-—------—〜一ί六、申請專利範圍 第87 1 1 1 3 5 9號專利申請案 -中文申請專利範圍修正本 民國90年10月修正 1 · 一種光資訊記錄媒體,其特徵爲含有具有透光性 之基板’ 於此基板上所設置,且含有吸收激光記錄光之色素所 構成之光吸收物質之光吸收層, 及於此光吸收層上所設置,且將激光反射之光反射層 ,並且經由對該光吸收層照射該記錄光而將資訊記錄之光 資訊記錄媒體, 其特徵爲該光吸收層於該記錄光之波長中的吸光度視 爲 A (Abs)時, 爲〇.13SAS0.21,並且 於該記錄光之波長中,該光吸收層之膜的複因素折射 率之虛數部視爲k,該光吸收層之平均膜厚視爲d a v ( n m )時, 爲6 · OSk · dav$12 . Ο,該光吸收層之平 均膜厚 d a ν 爲 4 〇 nm$ d a 5 nm。 2 .如申請專利範圍第1項所述之光資訊記錄媒體’ 其特徵爲在該光吸收層中添加該記錄光之波長中’該光吸 收層之膜的複因素折射率之虛數部k爲0· 2 · 0之材料。 3 ·如申請專利範圍第1項所述之光資訊記錄媒體’ 其特徵爲該光吸收物質爲含有8 0莫耳%以上具有圖2所 本紙張尺度適用中國國家梂準(CNS ) A4規格(21 OX297公釐) (請先閲讀背面之注意事項再填寫本頁) 訂 線 泰 558720 A8 B8 C8 D8 六、申請專利範圍示構造式之苯系花青色素。 (請先閱讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消贫合作社印製 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) _ 2 -
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