TW556175B - Optical recording method and optical recording medium - Google Patents

Abstract

The object of the present invention is to provide an optical recording method and optical recording medium suitable for multistage recording. In the optical recording method to irradiate laser beam onto the optical recording medium 10 having translucent substrate 14 with recording layer 12 for recording data, arbitrary unit length H is defined continuously in the moving direction S of the recording layer 12. A virtual recording frame 40 can be used for recording the unit recording mark 48, which can switch the irradiation time to have more than 5 stages, and the ratio of the longest irradiation time TL to the shortest irradiation time TS among the 5 stages of irradiation time satisfies: 0.05 < TS/TL < 0.5 for irradiating the laser beam, so as to form plural recording marks 48A to 48G with different sizes.

Description

556175 經濟部智慈財產局員工消費合作社印製 A7 B7五、發明説明（1 ) 【發明所屬之技術領域】 本發明爲相關於因應記錄的資料種類，形成複數種記 錄標誌完成多級（7&lt;少，multilevel )記錄的光記錄 方法及光記錄媒體。 【先前技術】 對於改換再生信號的長短（反射信號變調部的長度） 爲多階段以記錄資料的先前之光記錄媒體記錄方法，改爲 切換再生信號的深度（反射信號的變調度）爲多階段，以 便在同一長度的各信號記錄複數資料的方法，已有諸多硏 究。 此種光記錄方法，因可以在深度方向記錄複數資料， 比利用凹點之有無的二値法以記錄資料，可增加單位長度 內的信號量，而提升線記錄密度。將再生信號的深度改換 爲多階段的方法，一般是將激光光束的能量切換爲多階段 ，形成某種相異的記錄標誌。目前，這種光記錄媒體，有 利用全相照像（水口 7 7，h〇l〇graph )或將記錄層改爲多 層等提案。 又本文所稱多級記錄，是指記錄反射信號的變調度互 異之複數種資料。 【發明所欲解決之課題】 另一方面，這些多級記錄的光記錄方法，隨著激光光 束能量的增加，即隨著形成反射信號的深度之加深，會使 (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 ) A4規格（210X 297公釐） -4- 556175 經濟部智慧財產局B(工消費合作社印t A7 _B7五、發明説明（2) 再生時的信號品質劣化。其原因雖未究明，但本發明人推 想，原自激光能量的增加，致使記錄標誌的面積（記錄標 誌面積）增大所致。 例如，爲光記錄媒體記錄資料量的高密度化，將記錄 標誌縮短後改換激光能量爲多段的多級記錄時，其信號品 質將會顯著劣化，以至多級記錄的功效實質上無法湊效。 換言之，如要採用多級記錄時，需將記錄標誌間隔加寬， 即使信號品質劣化後，仍可確實檢測出某一程度才可以。 又以往將激光光束能量切換爲階段式多級記錄的光記 錄方法之想法，是以其記錄標誌長度，需大於記錄時的聚 光光束（tf — Aクxス卜）直徑爲前提。 一般聚光光束的直徑，以Κλ/ΝΑ (K :常數，λ :激光波長，N A :透鏡的開角（n u m e ι· i c a 1 a p e 1.1 u ι· e ))表 示。CD所使用拾波器（p i c k — up)的一般；1 = 7 8 0 n m，N A = 〇 · 4 5而其聚光光束的直徑約爲 1 · 6 μ m。此時如記錄標誌長達1 · 6 # m左右時，上 記的信號劣化問題開始顯著化，致使以變換激光能量進行 5階段以上的多級記錄發生困難。 以上諸問題，應屬激光光束能量設定、光記錄媒體特 性等諸因素的錯綜複雜影響結果，但是本發明人所知範圍 內’其原因至今尙未究明，實際上高密度多級記錄及其記 錄方法至今尙未達成。 本發明鑑於上記問題，爲達成高密度多級記錄爲目的 ，提出新多級記錄方法的提案。 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公酱) &quot; -5 - (請先閱讀背面之注意事項再填寫本頁) 556175 經濟部智慈財產局員工消費合作社印奴 A7 ____ B7_五、發明説明（3) 【解決課題之手段】 本發明人銳意硏究光記錄媒體，發現多階段記錄的記 錄方法，並確認此記錄方法，可使光記錄媒體能以5階段 以上的高密度進行多級記錄。 換言之，由下述之本發明可達成上記目的。 由激光光束照射在透光性基板上記錄層的光記錄媒體 以記錄資料的光記錄方法，在前記記錄層，以前記激光光 束的相對移動方向之任意單位長度及與其直交方向任意單 位寬度，連續設定可將單位記錄標誌加以記錄之假想記錄 格’並且對於複數前記假想記錄格加以規定，可將照射時 間切換成5階段以上，且該5階段以上的照射時間中最長 照射時間T L與最短照射時間τ S的比値在滿足〇 · 〇 5 &lt; T S / T L &lt; 〇 · 5 (......關係式（1 ))關係的狀 態下照射前記激光光束’形成大小不同的複數記錄標誌爲 特徵的光記錄方法。 前記激光光束照射所形成大小不同的前記複數記錄標 誌中，含有小於讀取激光的聚光光束直徑的記錄標誌爲特 徵的（1 )之光記錄方法。 前記激光光束的前記最長照射時間T L設定爲2 X 1 0 一 8 &lt; T L &lt; 1 X 1 〇 — 6 (秒）爲特徵的（1 )或（2 )之光記錄方法。 由激光光束照射記錄層以形成記錄標誌達成資料的記 錄，且對此記錄標誌照射讀取激光光束以讀取所記錄資料 的光記錄媒體，在前記記錄層，以激光光束與記錄層的相 (請先閱讀背面之注意事項再填寫本頁) -裝· 訂 本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） -6 - 556175 經濟部智慧財產局員工消費合作社印製 A7 ___B7五、發明説明（4) 對移動方向之任意單位長度及與其直交方向的單位寬度， (在前記移動方向）連續加以設定假想記錄格，在此假想 記錄格的前記記錄層，爲可對應於激光光束照射時間以5 階段以上的變調形成大小不同的記錄標誌，此記錄標誌對 於假想記錄格的面積比及透光率之中，至少對於因面積比 而改變的光反射率產生變調反應，以實現資料的5階段以 上多級記錄，前記記錄層對於前記5階段以上的前記照射 時間中之最長照射時間T L與最短照射時間τ S的比値， 以滿足0 · 0 5 &lt; T S / T L &lt; 〇 · 5關係之狀態下照射 前記激光光束，形成大小不同的複數記錄標誌所構成爲其 特徵。 前記記錄層，爲含有有機染料所構成爲特徵的（4 ) 之光記錄媒體。 前記激光光束之前記最長照射時間T L設定爲2 X 1 〇 — 8 &lt; T L &lt; 1 X 1 〇 — 6 (秒）爲特徵的（4 )之光記 錄媒體。 前記記錄層，爲含有有機染料所構成爲特徵的（6 ) 之光記錄媒體。 本發明人，發現不需對記錄時的激光能量而對於激光 照射時間加以變調即可達成多級記錄。如此，可實現大幅 提高記錄密度。 但是’僅由照射時間的變調以形成記錄標誌，仍有無 法確實讀取記錄標誌的情形。經由本發明人進一步的解析 結果’發現將最低照射時間與最長照射時間的比値限制在 (請先閱讀背面之注意事項存填寫本買) -装- 訂 P. 本紙張尺度適用中國國家標準（CNS ) A4規格（210X29*7公釐） 556175 經濟部智慧財產局員工消費合作社印製 Μ Β7五、發明説明（5) 上記關係式（1 )範圍內，即可大幅提高讀取精度。此時 最短照射時間，爲設定5階段以上反射率時，獲取最高反 射率所必要的時間，而最長照射時間，爲獲得最低反射率 所必要的時間。 例如，爲形成大幅降低假想記錄格反射率的記錄標誌 ，將記錄用激光光束的照射時間極端增加時，會形成記錄 面積比高反射率的記錄標誌爲廣的記錄標誌，而使信號品 質劣化。相反地，爲提高假想記錄格的反射率而將照射時 間極端縮短時，即無法達成足夠深度的記錄。 爲進行5階段以上的多級記錄，需要適當的照射時間 領域（最小照射時間〜最大照射時間）。考慮及此，將照 射激光光束的最低照射時間與最長照射時間之比値設定在 關係式（1 )的範圍內，加以約束照射時間，抑制過度長 時間或過度短時間的照射。換言之，追加最長記錄與最短 記錄時間的條件，以提高其記錄精度。 此關係式（1 )在〇 · 0 5以下時，可輕易地導出最 長照射時間太長，或者最短照射時間太短的結論。發生前 項情形時將使反射率低的假想記錄格（的記錄標誌）之記 錄品質惡化而無法正常執行資料的再生，發生後項情形時 將使反射率高的假想記錄格（的記錄標誌）的記錄不完整 ，而無法正常執行資料的再生。 又關係式（1 )在〇 · 5以上時，可輕易地導出最長 照射時間太短，或者最短照射時間太長的結論。發生前項 情形時將使反射率低的假想格（的記錄標誌）之記錄不完 本紙張尺度適用中國國家標準（CNS ) A4規格（210x29*7公釐） --— 上-8- (請先閲讀背面之注意事項再填寫本頁) •裝· 556175 經濟部智慧財產局B(工消费合作社印製 A7 ___B7五、發明説明（6) 整而無法正常執行資料的再生，發生後項情形時將使反射 率低的假想記錄格（的記錄標誌）之信號品質惡化而無法 正常執行資料的再生。 換言之，利用關係式（1 )可極合理地設定（修正） 照射時間。 以上所示本發明的光記錄方法，在執行多級記錄時可 維持良好的信號特性，又可變換激光照射時間將所節省部 分用以縮小記錄標誌。具體而言，將小於讀取激光的集光 光束直徑以下長度的記錄標誌，包含在將激光光束的照射 時間切換爲5階段以上所形成記錄標誌的一部分較佳。如 此可較以往者大幅提高記錄密度。 此外，此處所稱記錄標誌大小，是指構成記錄層材料 ，受激光光束的照射而分解變質，產生折光率變化，或在 厚度方向產生透光率變化的變化量大小。 又在上記關係式（1 )的範圍內，最好設定爲 0 · 04&lt;TS/TL&lt;〇· 5 ，如設定爲 0 . 0 5&lt; TS/TLCO _ 5更好。即使在激光光束能量爲一定的 條件下，上記關係式（1 )的比値因光記錄媒體的特性差 異而會有不同。又同一光記錄媒體的上記關係式（1 )的 比値，也因激光光束能量的差異而有所不同。因此應充分 考量光記錄媒體的特性及激光光束能量，定出滿足上記關 係式爲妥。 例如，以光記錄媒體的特性而言，如以達成5階段以 上的反射率爲前題，在各假想記錄格形成記錄標誌時，其 (請先閱讀背面之注意事項再填寫本頁) 裝· 訂 本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） -9- 556175 經濟部智慧財產局肖工消費合作社印製 A7 _B7五、發明説明（7) 中必有最高反射率的假想記錄格及最低反射率的假想記錄 格。激光照射時間以對於最高反射率的假想記錄格爲最短 ’以對於最低反射率的假想記錄格爲最長。以記錄層而言 ，照射時間對於反射率變化（低化）大的媒體，亦即使用 短時間內可完成記錄的媒體時，其最短照射時間與最長照 射時間將更爲接近，結果關係式（1 )値變大。這就是上 記關係式（1 )値在0 · 5以上之光記錄媒體，不容易以 照射時間加以控制反射率，或記錄標誌過大不適於多値記 錄媒體的原因。 反之，如使用照射時間對於反射率變化（低化）小的 媒體時，關係式（1 )値將變小。如在〇 · 〇 5以下的光 g己錄媒體，含有檢測困難的微小記錄標誌之可能性甚高， 所以仍不適於做爲多値記錄媒體。 總而言之，本發明的光記錄方法含有「光記錄媒體的 選別」之意義。因爲滿足上記關係式（1 )，需記錄方法 與§5錄媒體兩者同時成立，本發明才能實現，才能實際提 高資料的檢測精度。 爲提高多級記錄的精度’在上記發明中以關係式（工 )增加一定條件，但是如再將前記最長照射時間T L設定 爲 2xl〇 &lt;TL&lt;lxl〇 6(20nsec&lt;TL &lt; 1 // s e c )時，可更確實地增加其精度。 又’相關於上記發明的光記錄方法所可能記錄的光記 錄媒體’其本身特性爲適合於多級記錄，可達成上記目的 者。該記錄層，以含有有機染料所構成爲妥，由本發明 (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 ) A4規格（210X 297公釐） -10 - 556175 經濟部智慈財產局員工消費合作社印製 A7 ___ B7五、發明説明（8) ，確認確實可達成5階段以上的多級記錄。 此外，本發明亦可採取如下構成。 (5 )改變在前記假想記錄格內所形成的記錄標誌大 小，對於假想記錄格的面積比及記錄標誌的透光率中，至 少將面積比的該假想記錄格全體的光反射率，因應前記激 光光束照射時間加以變調，達成5階段以上的資料多級記 錄爲特徵的（1 ) 、（ 2 )或（3 )的光記錄方法。 (6 )將激光光束的光束直徑固定時，前記記錄層的 材料，爲照射時間所能影響的記錄標誌大小及透光率中， 至少是大小可變調的材料所構成，而以激光光束的光束直 徑爲一定加以照射爲特徵的（5 )之光記錄方法。 (7 )前記假想記錄格的單位長度，設定爲與前記最 大照射時間的激光光束照射所形成記錄標誌的長度大致相 等爲特徵的（4 )之光記錄媒體。 (8 )沿著前記記錄層，設置激光光束引導用溝槽， 前記假想記錄格是設在前記溝槽內，並且，前記單位寬度 與溝槽寬度一致爲其特徵的（4 )或（7 )之光記錄媒體 〇 (9 )前記記錄層的一部分，爲已完成多級記錄資料 爲特徵的（4 ) 、（ 7 )或（8 )之任一光記錄媒體。 (1 0 )前記假想記錄格與已記有多級記錄部分的至 少一方，記有表示多級光記錄媒體的特定資料爲特徵的（ 4) 、（7)至（9)之任一光記錄媒體。 (1 1 )沿前記記錄層，設置激光光束引導用溝槽， (請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） -11 - 556175 A7 _____ B7 五、發明説明（9) 此溝槽具有中斷部分爲其特徵的（4 ) 、（ 7 )至（1〇 )的任一光記錄媒體。 (請先閱讀背面之注意事項再填寫本頁) 【發明之實施形態】 以下參照圖面，就本發明的實施形態例詳加說明之。 適用有關本發明實施形態例的光記錄方法之光記錄媒 體（r 4只夕）1 〇，是在記錄層1 2使用染料的CD — R，覆蓋透明基材的基板1 4，及在此基板1 4的一面（ 第1圖的頂面）所形成激光引導用溝槽1 6整體塗布由染 料所組成之前記記錄層1 2，及在此記錄層1 2上側以縣 射法等所形成的金或銀等反射膜1 8，及覆蓋此反射膜 1 8外側的保護層2 0所構成。 前記記錄層1 2所使用染料，有青素（シ7二&gt; )、 部花青（&gt; 口 k 7二y )、亞甲系（ &gt; 夭 &gt; )染料及其衍 生物、硫苯七' &gt;^才一少）金屬錯合體、金屬青素 (夕夕口シア二シ）染料、萘酚青素（十7夕口シア二'/ )染料、偶氮（7 V'' )染料等有機染料。 經濟部智慧財產局8工消費合作社印製 前記光記錄媒體1 0的多級記錄，由第2圖所示光記 錄裝置3 0所執行。 此光記錄裝置3 0爲C D - R記錄器，是介由主軸伺 服器3 1由主軸馬達3 2將光記錄媒體（尹4只夕）1 0 以定線速度旋轉驅動，由激光3 6的激光光束將資料記_ 在光記錄媒體（尹〃只夕）。 依記錄資料類別，如第1、3圖所示，前記激光3 δ 本紙張尺度適用中國國家標準（CNS ) Α4規格（210Χ 297公釐） -12- 556175 A7 _______B7_ 五、發明説明（β 可經由激光驅動器3 8控制相當於一格假想記錄格（詳如 後述）4 0的激光照射時間，比如控制激光脈衝數。 第2圖的編號4 2，爲包含物鏡4 2 A與半透明反射 鏡4 2 B的記錄光學系。物鏡4 2 A介由焦距追蹤伺服器 4 4控制激光光束聚焦於光記錄媒體1 0的記錄層1 2。 又物鏡4 2 A與半透明反射鏡4 2 B，是由輸出伺服器 4 6控制，以同步於磁碟1 0由內側向外側以指定速度旋 轉移動。 前記主軸伺服器3 1、激光驅動器3 8、聚焦追蹤伺 服器4 4、輸出伺服器4 6，是由控制裝置5 0所控制。 需記錄在記錄層1 2的資料（資訊）是輸入控制裝置5 0 〇 將前記假想記錄格4 0以及光記錄方法詳加說明如下 〇 首先，如第1圖所示，在前記溝槽1 6內，以磁碟 3 4的旋轉方向，即圓周方向S，連續地規定假想記錄格 4 0。各假想記錄格4 0的圓周方向S之單位長度爲Η， 如第3圖所示，設定爲短於光束直徑（e' — Λ 9工7卜的 直徑）D。又，直交於上記單位長度Η的方向爲單位寬度 W。依照記錄資料的特性，對準各假想記錄格4 0照射激 光光束，形成模式圖所例示的記錄標誌4 8 Α〜4 8 G。 具體而言，將前記激光3 6所發射的激光光束能量加 以固定，對於複數假想記錄格4 0變換激光照射時間爲5 階段以上（本例爲7階段），在激光中心部形成不同直徑 本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） (請先閱讀背面之注意事項再填寫本頁) •裝· 訂 經濟部智慈財產局g(工消費合作社印繁 -13 - 556175 經濟部智慧財產局員工消費合作社印製 Μ Β7五、發明説明（〇 的記錄標誌4 8 Α〜4 8 G (激光光束爲圓形，但在磁碟 1 0旋轉狀態下照射激光光束，所以依時間長短呈現長圓 形）。 究其原因，爲聚焦的激光光束一般雖呈現高斯分布（ 方夕シ7 &gt;分布，Gaussian distribution)，但在記錄層 1 2，只限於激光光束超過一定極限値部分才進行記錄， 所以依激光光束照射時間的變化，致使可在記錄層1 2所 記錄的激光光束之光點大小產生變化。如此，才可能形成 第3圖所示的7階段記錄標誌4 8 A〜4 8 G。 此時，將記錄標誌4 8 A〜4 8 G的各大小，設定爲 假想記錄格4 0受到讀取激光光束的照射時，其反射光的 光反射率成爲7階段。前記光反射率記錄標誌愈小反射率 愈大，未形成記錄標誌的假想記錄格之反射率最大，形成 最大記錄標誌4 8 G之假想記錄格的反射率最小。更嚴謹 而言，前記光反射率，係考量各記錄標誌4 8 A〜4 8 G 對假想記錄格的面積比與記錄標誌本體的透光率後才設定 〇 記錄標誌4 8 A〜4 8 G本體的透光率，是由構成記 錄層1 2的材料受激光光束的照射而分解變質，以致折光 率產生變化，或記錄層1 2在厚度方向的變化量而有差異 。但形成記錄標誌部分的透光率爲零時，可不予考慮。 此處再將7階段的照射時間之最長照射時間T L (爲 記錄標誌4 8 G値）與最短照射時間T S (爲記錄標誌 48A値）的比値設定爲滿足0·05&lt;TS/TL&lt; (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 ) A4規格（210X 297公釐） -14- 556175 經濟部智慧財產局S(工消費合作社印製 A7 B7五、發明説明（ 0 . 5 (......關係式（1 ))的關係。如此，可改善讀 取時的信號特性。因此如第3圖所示，該記錄標誌可縮小 相當於該分量的部分，即使記錄標誌（指所有記錄標誌 4 8 A〜4 8 G )的長度小於讀取激光的聚光光束直徑D 値以下，亦可充分讀取資料。 再以本實施形態是例示，所有記錄標誌均小於集光光 束直徑D，但本發明並不限定於此，將包括記錄標誌的一 部分小於D値，或全部記錄標誌大於聚光光束直徑D値的 形態。 又上記激光光束的最長照射時間T L爲設定在2 X 1 〇_8&lt;TL&lt;lx 1 〇— 6 (秒）範圍內。 在此，未採用記錄時的激光能量變調而改採將激光照 射時間加以變調的新構想，如果僅將照射時間加以變調形 成記錄標誌時，會發生無法確實讀取記錄標誌的情形。但 是本光記錄方法將最低照射時間T S與最長照射時間T L 的比値設在上記關係式（1 )範圍內，所以可大幅提高讀 取精度。 爲執行5階段以上的多級記錄，需要設定照射時間領 域（最短照射時間T S〜最長照射時間τ L )。此時，最 短照射時間與最長照射時間的比値需在指定範圍內，限制 過長或過短照射時間。即依照關係式（1 )將照射時間加 以合理設定（修正）。 以上所示本實施形態例的光記錄方法，可在多級記錄 時改善信號特性，使記錄標誌可縮小其分量。如前所述， (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 ) A4規格（210X 297公慶） -15- 556175 A7 B7 五、發明説明（1含 (請先閱讀背面之注意事項再填寫本頁) 實際上可包含讀取激光的聚光光束直徑D以下長度的記錄 標誌4 8 A〜4 8 G。因此，可將單位面積的記錄密度極 度顯著地（比以往）提高。 又此光記錄方法，還含有挑選光記錄媒體的意味。因 爲滿足上記關係式（1 )需要光記錄媒體1 〇與記錄方法 兩者並存。因此可實現此關係式（1 )的磁碟1 〇，必定 適用於多級記錄。556175 Printed by A7 B7 of the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 5. Description of the invention (1) [Technical field to which the invention belongs] The present invention forms a plurality of types of record marks to complete multiple levels (7 &lt; Multi-level) optical recording method and optical recording medium. [Prior art] For changing the length of the reproduced signal (the length of the reflected signal transposition unit) to a multi-stage recording method of the previous optical recording medium, the depth of the reproduced signal is changed (the schedule of the reflected signal is changed to multi-stage). Many methods have been used to record plural data in each signal of the same length. This optical recording method can record plural data in the depth direction, which can increase the signal amount per unit length and increase the linear recording density, as compared with the binary data recording method using the presence or absence of pits. The method of changing the depth of the reproduced signal to a multi-stage method is generally to switch the energy of the laser beam to multi-stage to form some kind of different recording marks. At present, such optical recording media have been proposed to use all-phase photography (Shuikou 77, holgraph) or to change the recording layer to multiple layers. The multi-level recording referred to in this article refers to the multiple types of data that record the variable scheduling of reflected signals. [Problems to be Solved by the Invention] On the other hand, with these multi-level recording optical recording methods, as the energy of the laser beam increases, that is, as the depth of the reflected signal becomes deeper, (please read the precautions on the back first) (Fill in this page again) This paper size applies Chinese National Standard (CNS) A4 specification (210X 297 mm) -4- 556175 Intellectual Property Bureau of the Ministry of Economics B (Industrial and Consumer Cooperatives Print A7 _B7 V. Description of invention (2) When recycling The quality of the signal is degraded. Although the reason is not clear, the inventors speculate that the increase in the laser energy originally caused the area of the recording mark (recording mark area) to increase. For example, the amount of data recorded for the optical recording medium is high. Densification, when shortening the recording mark and changing the laser energy to multi-level recording with multiple segments, its signal quality will be significantly degraded, so that the efficiency of multi-level recording will not be effective. In other words, if multi-level recording is used, By widening the recording mark interval, even after the signal quality is degraded, it can still be detected to a certain degree. In the past, the energy of the laser beam was switched to a staged mode. The idea of the optical recording method for multi-level recording is based on the premise that the length of the recording mark must be greater than the diameter of the condensing beam (tf — Akxbus) during recording. The diameter of the general condensing beam is κλ / ΝΑ ( K: constant, λ: laser wavelength, NA: opening angle of the lens (nume · ica 1 ape 1.1 u · e)). The pick-up used by CD is general; 1 = 7 8 0 nm, NA = 0.45 and the diameter of its condensing beam is about 1.6 μm. At this time, if the recording mark is about 1.6 μm long, the above-mentioned signal degradation problem will start to become significant, resulting in Difficulties with laser energy for multi-level recording of more than 5 stages occur. The above problems should be the result of intricate and complex effects of various factors such as laser beam energy setting and characteristics of optical recording media, but within the scope of the inventors' knowledge, the reason is unknown It is found that, in fact, high-density multi-level recording and its recording method have not been reached so far. In view of the above problem, the present invention proposes a new multi-level recording method for the purpose of achieving high-density multi-level recording. This paper scale is applicable to China Standard (CNS) A4 specification (210X297 male sauce) &quot; -5-(Please read the precautions on the back before filling out this page) 556175 Employees' Cooperatives of the Intellectual Property Office of the Ministry of Economic Affairs, Consumer Cooperatives, Innu A7 ____ B7_V. Description of the invention ( 3) [Means for solving the problem] The present inventors earnestly researched the optical recording medium, found a recording method of multi-stage recording, and confirmed that the recording method can enable the optical recording medium to perform multi-stage recording at a high density of 5 stages or more. In other words, the above-mentioned object can be achieved by the present invention described below. An optical recording method for recording data by irradiating a light recording medium of a recording layer on a transparent substrate with a laser beam to record data. For any unit length and any unit width in the direction orthogonal to it, continuously setting the imaginary record cells that can record the unit record mark, and stipulating a plurality of imaginary record cells, and the irradiation time can be switched to more than 5 stages, and the 5 stages Among the above irradiation times, the ratio 最长 of the longest irradiation time TL to the shortest irradiation time τ S satisfies 〇. 5 &lt; TS / T An optical recording method characterized by illuminating a pre-recorded laser beam &apos; in a state of a relationship of L &lt; 0.5 (... relation (1)) to form a plurality of recording marks having different sizes. The pre-recorded plural recording marks of different sizes formed by the pre-recorded laser beam irradiation have a characteristic (1) optical recording method that includes a recording mark smaller than the diameter of the focused beam of the reading laser light. The pre-recorded longest irradiation time T L of the pre-recorded laser beam is set to 2 X 1 0-8 &lt; T L &lt; 1 X 1 0-6 (seconds), which is a light recording method of (1) or (2). A laser beam is irradiated to the recording layer to form a recording mark to achieve data recording, and the recording mark is irradiated with an optical recording medium that reads a laser beam to read the recorded data. In the pre-recording recording layer, the phase of the laser beam and the recording layer is ( Please read the notes on the back before filling out this page)-The size of the paper is bound to the Chinese national standard (CNS) A4 (210X 297 mm) -6-556175 Printed by the Consumers ’Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 ___B7 V. Description of the invention (4) For any unit length in the moving direction and the unit width in the direction orthogonal to it, the imaginary recording grid is continuously set (in the moving direction of the preamble), and the prerecording layer of the imaginary recording grid is corresponding to the laser The beam irradiation time is changed by more than 5 steps to form recording marks of different sizes. This recording mark has a modulation response to the area ratio and light transmittance of the imaginary recording grid, and at least the light reflectance that is changed due to the area ratio. Multi-level records of data over 5 stages. The pre-recording layer has the longest exposure time to pre-records with 5 or more stages. The ratio of the irradiation time TL to the shortest irradiation time τ S satisfies the relationship of 0 · 0 5 &lt; TS / TL &lt; 0.5 and irradiates the pre-recorded laser beam to form a plurality of recording marks of different sizes. . The preamble recording layer is an optical recording medium (4) characterized by containing an organic dye. The longest exposure time T L before the previous laser beam is set to 2 X 1 0-8 &lt; T L &lt; 1 X 1 0-6 (seconds) which is a light recording medium characterized by (4). The preamble recording layer is an optical recording medium (6) characterized by containing an organic dye. The inventors have found that multi-level recording can be achieved without changing the laser energy during recording, but by adjusting the laser irradiation time. In this way, a significant increase in recording density can be achieved. However, the recording mark is formed only by the change of the irradiation time, and the recording mark cannot be read reliably. Through further analysis by the inventor, it was found that the ratio of the minimum exposure time to the longest exposure time was limited to (please read the precautions on the back and fill in this purchase)-binding-ordering P. This paper size applies Chinese national standards ( CNS) A4 specification (210X29 * 7mm) 556175 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs Β7 V. Description of the invention (5) Within the range of the above relation (1), the reading accuracy can be greatly improved. At this time, the shortest irradiation time is the time necessary to obtain the highest reflectance when the reflectance is set in more than 5 steps, and the longest irradiation time is the time required to obtain the lowest reflectance. For example, in order to form a recording mark that significantly reduces the reflectance of an imaginary recording grid, when the irradiation time of the recording laser beam is extremely increased, a recording mark having a wider recording area than a high-reflection recording mark is formed, thereby deteriorating the signal quality. Conversely, when the irradiation time is extremely shortened in order to increase the reflectivity of the hypothetical record grid, a sufficient depth of recording cannot be achieved. In order to perform multi-level recording of 5 steps or more, an appropriate irradiation time range (minimum irradiation time to maximum irradiation time) is required. Taking this into consideration, the ratio 値 of the minimum irradiation time to the longest irradiation time of the irradiated laser beam is set within the range of the relational expression (1), and the irradiation time is restricted to suppress excessively long time or excessively short time irradiation. In other words, the conditions of the longest recording and the shortest recording time are added to improve the recording accuracy. When this relational expression (1) is less than or equal to 0.05, a conclusion can be easily derived that the longest irradiation time is too long or the shortest irradiation time is too short. In the former case, the recording quality of the hypothetical record cell (recording mark) with a low reflectance will be deteriorated, and the reproduction of data cannot be performed normally. In the latter case, the hypothetical record cell (recording mark) with a high reflectance will be deteriorated. Records are incomplete and reproduction of data cannot be performed normally. When the relational expression (1) is 0.5 or more, the conclusion that the longest irradiation time is too short or the shortest irradiation time is too long can be easily derived. In the case of the foregoing case, the recording of the imaginary grid (recording mark) with low reflectance will be incomplete. This paper size applies the Chinese National Standard (CNS) A4 specification (210x29 * 7 mm) --- 上 -8- (please first Read the notes on the reverse side and fill in this page) • Equipment · 556175 Bureau of Intellectual Property, Ministry of Economic Affairs B (printed by Industrial and Consumer Cooperatives A7 ___B7 V. Invention Description (6) The reproduction of the data cannot be performed normally. The signal quality of an imaginary recording grid (recording mark) with a low reflectance is deteriorated, and the reproduction of data cannot be performed normally. In other words, the relationship (1) can be used to set (correct) the irradiation time in a very reasonable manner. The optical recording method can maintain good signal characteristics when performing multi-level recording, and can change the laser irradiation time to use the saved portion to reduce the recording mark. Specifically, it will be smaller than the length of the collection laser beam diameter of the reading laser. The recording mark preferably includes a part of the recording mark formed by switching the irradiation time of the laser beam to 5 or more steps. This can greatly improve the recording mark compared with the past. In addition, the recording mark size referred to here refers to the amount of change in the material constituting the recording layer, which is decomposed and deteriorated by the irradiation of the laser beam, changes in refractive index, or changes in transmittance in the thickness direction. Within the range of the relational expression (1), it is better to set it as 0 · 04 &lt; TS / TL &lt; 0.5. For example, it is better to set it as 0.5. &Lt; TS / TLCO _ 5. Even if the laser beam energy is a certain condition In the following, the ratio 値 of the above-mentioned relationship (1) will be different due to the characteristics of the optical recording medium. The ratio 値 of the above-mentioned relationship (1) of the same optical recording medium will also be different due to the difference in the energy of the laser beam. Therefore, it is necessary to fully consider the characteristics of the optical recording medium and the energy of the laser beam, and determine that the above relationship is appropriate. For example, in terms of the characteristics of the optical recording medium, if the reflectance of 5 steps or more is achieved, When the imaginary record cell forms a record mark, (please read the precautions on the back before filling this page). The size of the binding and binding paper is applicable to the Chinese National Standard (CNS) A4 specification (210X 297 mm). -9- 556175 Printed by the Ministry of Intellectual Property Bureau Xiaogong Consumer Cooperative A7 _B7 V. Invention Description (7) There must be an imaginary record grid with the highest reflectance and an imaginary record grid with the lowest reflectance. The laser irradiation time is based on the imaginary record grid with the highest reflectance. The shortest is the longest imaginary recording grid for the lowest reflectance. For the recording layer, the shortest exposure time is for the medium with a large change (reduction) in reflectance, that is, the shortest when using a medium that can complete recording in a short time. The irradiation time will be closer to the longest irradiation time, and as a result, the relational expression (1) 値 will become larger. This is the optical recording medium with the relational expression (1) 値 above 0 · 5, and it is not easy to control the reflectance by the irradiation time. Or the reason why the recording mark is too large is not suitable for recording media. On the other hand, if a medium with a small change in reflectance (lowering) of the irradiation time is used, the relationship (1) 値 becomes smaller. If the optical recording medium below 005 is less likely to contain minute recording marks that are difficult to detect, it is still not suitable as a multi-recording medium. In summary, the optical recording method of the present invention has the meaning of "selection of optical recording media". Because the relationship (1) above is satisfied, both the recording method and the §5 recording medium must be established at the same time, the present invention can be realized, and the detection accuracy of the data can be actually improved. In order to improve the accuracy of the multi-level recording, in the above invention, a certain condition is added with a relational expression (work), but if the previous longest irradiation time TL is set to 2xl0 &lt; TL &lt; lxl06 (20nsec &lt; TL &lt; 1 / / sec), the accuracy can be increased more reliably. It is also related to the optical recording medium which is possible to be recorded by the optical recording method of the invention described above. The characteristics of the optical recording medium are suitable for multi-level recording, and can achieve the above-mentioned purpose. The recording layer is composed of organic dyes. It is made by the present invention (please read the precautions on the back before filling this page) The paper size is applicable to China National Standard (CNS) A4 (210X 297 mm) -10-556175 A7 ___ B7 printed by the Consumers' Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. 5. Description of Invention (8), confirming that a multi-level record of more than 5 stages can be achieved. In addition, the present invention can also take the following configurations. (5) Change the size of the recording mark formed in the imaginary recording grid of the previous note. For the area ratio of the imaginary recording grid and the transmittance of the recording mark, at least the light reflectance of the entire imaginary recording grid of the area ratio should be in accordance with the previous note. The laser beam irradiation time is adjusted to achieve (1), (2) or (3) an optical recording method characterized by multi-level recording of data of more than 5 stages. (6) When the beam diameter of the laser beam is fixed, the material of the pre-recording layer is made of at least a variable-size material among the recording mark size and light transmittance that can be affected by the irradiation time. A light recording method of (5) characterized in that the diameter is constant and irradiated. (7) The unit length of the imaginary record cell of the preamble is set to an optical recording medium of (4) characterized by being approximately equal to the length of the recording mark formed by the laser beam irradiation at the maximum irradiation time of the preamble. (8) A groove for guiding the laser beam is provided along the preamble recording layer, and the presumption imaginary record cell is provided in the preamble groove, and the unit width of the preamble is consistent with the groove width as a feature (4) or (7) A part of the pre-recording layer of the optical recording medium 0 (9) is any optical recording medium of (4), (7) or (8) characterized by having completed multi-level recording data. (10) At least one of the pre-recorded imaginary recording cell and the multi-level recording portion is recorded with any one of (4), (7) to (9), which is characterized by specific data representing the multi-level optical recording medium. (1 1) A groove for guiding the laser beam is set along the pre-recording layer. (Please read the precautions on the back before filling this page.) This paper size applies to China National Standard (CNS) A4 (210X297 mm) -11- 556175 A7 _____ B7 V. Description of the Invention (9) This groove has any of the optical recording media of (4), (7) to (10) with a discontinued portion as its feature. (Please read the precautions on the back before filling out this page) [Embodiments of the invention] The following describes the embodiments of the present invention in detail with reference to the drawings. An optical recording medium (r 4) to which the optical recording method according to the embodiment of the present invention is applied is a CD-R using a dye in the recording layer 12 and a substrate 14 covering a transparent substrate, and the substrate. The laser-guiding grooves 16 formed on one side (the top surface in FIG. 1) are coated with a recording layer 12 composed of a dye, and formed on the upper side of the recording layer 12 by a shot method. A reflective film 18 such as gold or silver, and a protective layer 20 covering the outside of the reflective film 18 are formed. The dyes used in the pre-recording layer 12 include cyanine (素 7 二 &gt;), merocyanine (&gt; kk 7 二 y), methylene series (&gt; 夭 &gt;) dyes and their derivatives, and sulfur Benzene '&gt; ^ only a few) metal complexes, metal cyanin (Xixikou シ ア 二 シ) dyes, naphthocyanin (10th Seventh Xiakou xia' di '/) dyes, azo (7 V' ' ) Organic dyes such as dyes. The multi-level recording of the pre-recording optical recording medium 10 printed by the 8th Industrial Cooperative Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs is performed by the optical recording device 30 shown in FIG. 2. This optical recording device 30 is a CD-R recorder, and the optical recording medium (Yin 4 only) is driven by a spindle motor 3 2 through a spindle motor 3 2 at a constant linear speed, and is driven by a laser 3 6 The laser beam records the data on the optical recording medium (Yin Ye Zhixi). According to the types of recorded data, as shown in Figures 1 and 3, the pre-laser 3 δ This paper size applies the Chinese National Standard (CNS) A4 specification (210 × 297 mm) -12- 556175 A7 _______B7_ 5. Description of the invention (β The laser driver 38 controls the laser irradiation time equivalent to one imaginary recording grid (detailed later), such as controlling the number of laser pulses. The number 4 2 in FIG. 2 includes an objective lens 4 2 A and a semi-transparent mirror 4 The recording optical system of 2 B. The objective lens 4 2 A controls the focus of the laser beam on the recording layer 1 of the optical recording medium 10 via the focal tracking server 4 4. The objective lens 4 2 A and the translucent mirror 4 2 B are Controlled by the output server 4 6 to move synchronously with the disk 10 from the inside to the outside at a specified speed. Pre-recorded spindle server 3 1, laser driver 3 8, focus tracking server 4 4, output server 4 6, It is controlled by the control device 50. The data (information) to be recorded in the recording layer 12 is input to the control device 50 0. The detailed description of the previous hypothetical record cell 40 and the light recording method are as follows. First, as shown in Figure 1 Shown in the previous groove 1 6 According to the rotation direction of the magnetic disk 34, that is, the circumferential direction S, the imaginary record grid 40 is continuously specified. The unit length of the circumferential direction S of each imaginary record grid 40 is Η, as shown in FIG. 3, set to short The beam diameter (e '-Λ 9 7 7 卜 diameter) D. Also, the direction orthogonal to the unit length 记 above is the unit width W. According to the characteristics of the recorded data, aim at each hypothetical record cell 40 and irradiate the laser beam, The recording marks 4 8 Α to 4 8 G illustrated in the pattern diagram are formed. Specifically, the energy of the laser beam emitted by the pre-laser laser 36 is fixed, and the laser irradiation time is changed to 5 stages or more for a plurality of imaginary recording grids 40 ( This example is 7 steps). Different diameters are formed in the center of the laser. The paper size applies the Chinese National Standard (CNS) A4 specification (210X 297 mm) (please read the precautions on the back before filling this page). Ministry of Intellectual Property Bureau g (Industrial and Consumer Cooperative Cooperative Printing Fan-13-556175 Printed by the Intellectual Property Bureau of the Ministry of Economic Affairs Employee Consumer Cooperative Cooperative Corporation Β7 V. Description of the invention (〇 Record mark 4 8 Α ~ 4 8 G (Laser beam is circular But in The disc is irradiated with a laser beam under a rotating state of 10, so it shows an oval shape according to the length of time.) The reason is that the focused laser beam generally has a Gaussian distribution (Gaussian distribution), but it is being recorded. Layer 12 is limited to recording only when the laser beam exceeds a certain limit. Therefore, the light spot size of the laser beam that can be recorded in the recording layer 12 varies according to the change of the laser beam irradiation time. In this way, it is possible to form the 7-stage recording marks 4 8 A to 4 8 G shown in FIG. 3. At this time, the respective sizes of the recording marks 4 8 A to 4 8 G are set such that when the virtual recording cell 40 is irradiated with the reading laser beam, the light reflectance of the reflected light becomes seven steps. The smaller the pre-recorded light reflectance record mark, the greater the reflectance. The reflectance of an imaginary record cell where a record mark is not formed is the largest, and the reflectance of an imaginary record cell which forms a maximum record mark of 4 G is the smallest. More rigorously, the light reflectance of the previous note is set after considering the area ratio of each recording mark 4 8 A to 4 8 G to the imaginary recording grid and the light transmittance of the recording mark body. 0 Recording mark 4 8 A to 4 8 G The light transmittance of the body is degraded by the material constituting the recording layer 12 being irradiated by the laser beam, so that the refractive index changes, or the amount of change in the thickness direction of the recording layer 12 varies. However, when the light transmittance of the portion forming the recording mark is zero, it may be disregarded. Here, the ratio 最长 of the longest irradiation time TL (for the recording mark 4 8 G 値) to the shortest irradiation time TS (for the recording mark 48A 値) of the 7-stage irradiation time is set to satisfy 0 · 05 &lt; TS / TL &lt; ( Please read the notes on the back before filling this page.) This paper size is applicable to Chinese National Standard (CNS) A4 specifications (210X 297 mm) -14- 556175 Intellectual Property Bureau of the Ministry of Economic Affairs S (printed by Industrial and Consumer Cooperatives A7 B7 V. DESCRIPTION OF THE INVENTION (0.5 (... Relationship (1)). In this way, the signal characteristics at the time of reading can be improved. Therefore, as shown in FIG. 3, the recording mark can be reduced by the equivalent of this component. Part, even if the length of the recording mark (refers to all recording marks 4 8 A to 4 8 G) is less than the diameter D 聚 of the condensing beam of the reading laser light, the data can be read sufficiently. Furthermore, this embodiment is an example. The recording marks are all smaller than the light collecting beam diameter D, but the present invention is not limited to this, and includes a form in which a part of the recording marks is smaller than D 値, or all the recording marks are larger than the condensing beam diameter D 値. The longest irradiation of the laser beam is also noted above. Time TL is set at 2 X 1 〇_8 &lt; TL &lt; lx 1 〇-6 (seconds). Here, instead of changing the laser energy during recording, a new idea of changing the laser irradiation time is adopted. If only the irradiation time is adjusted to form When a mark is recorded, it may happen that the record mark cannot be read reliably. However, in this optical recording method, the ratio of the minimum irradiation time TS to the maximum irradiation time TL is set within the range of the relationship (1) above, so reading can be greatly improved. Accuracy. In order to perform multi-level recording of more than 5 stages, it is necessary to set the irradiation time range (the shortest irradiation time TS to the longest irradiation time τ L). At this time, the ratio of the shortest irradiation time to the longest irradiation time must be within a specified range, which is limited. Excessively long or too short irradiation time. That is, the irradiation time is reasonably set (corrected) according to the relational expression (1). The optical recording method of the embodiment shown above can improve signal characteristics and record marks during multi-level recording. Can reduce its weight. As mentioned before, (please read the precautions on the back before filling this page) This paper size applies Chinese National Standard (CNS) A4 (210X 297 public holidays) -15- 556175 A7 B7 V. Description of the invention (1 included (please read the precautions on the back before filling out this page) In fact, it can contain the recording mark of the laser beam's condensing beam diameter below D. 4 8 A ~ 4 8 G. Therefore, the recording density per unit area can be extremely significantly increased (compared to the past). This optical recording method also contains the meaning of selecting an optical recording medium. It satisfies the requirements of the above relation (1) The optical recording medium 10 and the recording method coexist. Therefore, the magnetic disk 10 that can realize the relationship (1) must be suitable for multilevel recording.

又本實施形態爲例示，上記C D - R磁碟所構成的光 記錄媒體1 0，但本發明並不限定於此，包含D V D - R 的其他適用於光記錄媒體者，並不限定於磁碟狀的旋轉體 〇 又上記實施形態例的記錄層1 2爲使用青素等有機染 料，但本發明並不限定於此，只要滿足上記關係式（1 ) 的特性物即可，上記以外的有機染料或無機染均可，又使 用其他適當材料亦無妨。但是使用上記有機染料時，在激 光光束5階段以上的照射時間下，可變化記錄標誌的大小 確實執行記錄，及以極高精度讀取資料。 經濟部智慧財產局肖工消費合作社印製 再以上記光記錄裝置3 0形成記錄標誌時，在記錄層 1 2上所設定假想記錄格4 0的大小，並不受實施形態例 的限定。尤其激光光束的光束直徑可更加縮小時，其長度 以相等於溝槽寬度最爲適宜。另一方面，記錄8階段等更 多階段的記錄標誌時，可設定爲大於激光光束直徑亦可。 此時一部分記錄標誌可大於光束直徑。當然本發明不受本 實施例構造所限，實用化的各種磁碟構造均可適用於本發 本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） -16- 556175 A7 B7 五、發明説明（ι4 明，再以不具有溝槽的光記錄媒體亦可適用於本發明。 (請先閱讀背面之注意事項再填寫本頁) 又前記激光光束，在記錄層1 2的位置時爲圓形，但 如第4圖所示，如並用物鏡4 2A與光束整形棱鏡4 2 C ’以致光束形狀在光記錄媒體1 0輸送方向呈現較短，與 其直交方向較長的長圓形狀或線狀亦可。此時，記錄標誌 4 9會變短所以可將假想記錄格更加縮短。亦即可提升記 錄密度。 經濟部智慈財產局員工消費合作社印製 再以，此光記錄媒體1 0，如第1圖中的編號5 2所 示，事先配合信號變調的段數設置反射率不同的複數凹穴 亦可，又在該記錄媒體的一部分事先以本發明的光記錄方 法進行多級記錄亦可。這些複數凹穴5 2及/或多級已記 錄部分的記錄標誌5 4可記錄：識別各該光記錄媒體的資 訊、識別多級記錄用光記錄媒體的資訊、將決定該記錄媒 體再生錄放的激光光束推薦能量之資料等特定資訊，亦可 。其特定資訊，爲該光記錄媒體再生及/或記錄時因讀取 t，而可確實識別多級記錄用記錄媒體，或再將其個別辨識 ，或因應事先記錄的凹穴段數決定激光光束的照射時間， 可更確實地執行多級記錄、再生作業。 或由第1圖的編號5 6所示，在激光光束導引用溝槽 設置中斷部將其一部分溝槽中斷亦可獲得同樣效果。這些 方法爲單獨，或組合利用均可。 【實施例】 以記錄層使用染料的C D - R爲光記錄媒體，進行多 本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） -17- 556175 A7 B7__ 五、發明説明（ 級記錄實驗。 記錄方法，是將使用爲記錄評價用的巴斯特（ (請先閱讀背面之注意事項再填寫本頁) 只少只f 7夕）製D D U (使用激光波長=7 8 4 n m ) ，接在高頻信號發生器進行。再生評價亦將D D U接在數 位示波器進行。 多級記錄，是以4 _ 8 m / s e c的固定線速度旋轉 磁碟1 0 ，以4 Μ Η z的時脈頻率激光光束在6階段變化 的照射時間下進行記錄。再生是同樣以固定線速度旋轉磁 碟1 0，以1 m W的激光光束照射而測其反射光量的差數 〇 再以此時所記錄信號的抖動値，以Le Croy製數位示波 器L C — 5 3 4擷取加以測定。 抖動値是以激光光束照射記錄層所形成的記錄標誌形 狀爲依據’ s5目S錄標誌確貫形成者表τρ；抖動値較小。如 此表示資料確實被記錄，而再生亦可確實執行。 經濟部智慧財產局Β(工消費合作社印製 此次所使用的抖動値測定機，依照以往2値記錄再生 方法的記錄資料’如抖動値小於1 〇 %可判定爲達成良好 記錄。 將各實施例具體說明如下。 【實施例1】 將青素染料溶解在氟化酒精調製爲2 %的記錄層形成 用染料溶液，將此溶液經2 0 0 r p m變化至5 〇 〇 〇 r p m的轉數以旋轉塗敷（X匕。&gt; 一卜）法在表面有螺 本紙張尺度適用中國國家標準（CNS ) A4規格（21 〇χ 297公楚) ~~---- -18- 556175 經濟部智慈財1局M工消費合作社印製 A7 B7五、發明説明（1弓 旋狀的預凸軌（：/ IX夕、、/1/ — ：/，其螺紋間距爲1 · 6 # m 、溝寬0 . 3 5 // m、預凸軌深〇 · ]_ 8 # m )的直徑 1 2 0 m m '厚度1 · 2 m m的整體成型聚碳酸酯（帝人 化成株式會社製只&gt; 5 &lt;卜（Panlite) AD 5 5 0 3 )透 光性基板的預凸軌側表面塗敷，形成自記錄層頂面至預凸 軌底部爲2 0 0 n m左右的有機染料記錄層。又此處所使 用透光性基板，爲事先在光記錄媒體加入多級記錄的辨別 信號，及激光光束能量的相關資料信號等記錄。 其次，在有機染料記錄層上以濺鍍法形成約1 〇 〇 n m厚的A g光反射層。然後在光反射層上以旋轉塗敷法 在旋轉數3 0 0 r pm變化至4 0 0 〇 r pm的轉數塗敷 紫外線硬化性樹脂（大日本墨水化學工業株式會社： S D 3 1 8 )。塗敷後，由塗膜的上方以高壓水銀燈照射 紫外線，形成1 0 // m厚的保護層。 使用如此所製成的光記錄媒體進行多級記錄。多級記 錄，是在定線速度旋轉的光記錄媒體，照射具有6階段照 射時間的激光光束進行記錄，再生時亦同樣以定線速度旋 轉下以照射1 m W激光光束，檢測其反射光達成再生。所 使用記錄·評價機爲巴斯特克（，少只亍v夕）社製的 D D U (記錄波長：7 8 4 n m )，記錄時的激光光束能 量設定爲1 4 m W。此時之記錄線速度爲4 · 8 m / s ’ 記錄的時脈頻率爲4 Μ Η z ( 2 5 0 n s e c ) ’記錄時 的激光照射時間分別爲（1 ) 5 0 n s e c、(2)80 nsec、（3) 110 nsec、（4) 14 0 (請先閱讀背面之注意事項再填寫本頁) 本纸張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） -19- 556175 經濟部智慈財產局員工消費合作社印製 A7 ___ B7 五、發明説明（ nsec、（5)170nsec、（6)200 n s e c。並繞行磁碟一周進行各單一信號的記錄。 此處的最短照射時間T S爲（1 ) 5 0 n s e c而最 長照射時間T L爲（6 ) 2 0 0 n s e c。因此，（T S / T L )比値爲〇 . 2 5 0而滿足上記關係式（1 )。此 磁碟’均達成6階段多級記錄，並確實可靠地讀取其記錄 資料。又將此光記錄媒體的上記（1 )〜（6 )記錄標誌 之抖動値列示於表1，由該表可知所有記錄標誌均獲得 1 0 %以下的良好評價。 【實施例2】 以相同於實施例1的條件製成光記錄媒體。 此處將多級記錄時的記錄激光光束能量設定爲1 3 ill W。此時之記錄線速度爲4 · 8 m / s ，記錄的時脈頻 率爲4 Μ Η z ( 2 5 0 n s e c )，記錄時的激光照射時 間分別爲（1) lOOnsec、（2) 125nsec 、（3) 150nsec、（4) 175nsec、（5 )20 〇 nsec 、 （6) 225nsec 。並繞行磁碟 一周進行各單一信號的記錄。 此處的最短照射時間T S爲（1 ) 1 0 0 n s e c而 最長照射時間T L爲（6 ) 2 2 5 n s e c。因此，（ T S / T L )比値爲0 · 4 4 4而滿足上記關係式（1 ) 。此磁碟，均達成6階段多級記錄，並確實可靠地讀取其 記錄資料。又將此光記錄媒體的上記（1 )〜（6 )記錄 (請先閱讀背面之注意事項再填寫本頁) -裝_ 、11The present embodiment is an example. The optical recording medium 10 composed of a CD-R magnetic disc is described above, but the present invention is not limited to this. Others including DVD-R are applicable to optical recording media, and are not limited to magnetic discs. The shape of the rotating body 0 and the recording layer 12 described in the embodiment are using organic dyes such as green pigment, but the present invention is not limited to this, as long as it satisfies the characteristics of the relationship (1) above, organic materials other than the above may be used. Either dyes or inorganic dyes may be used, and other suitable materials may be used. However, when the organic dyes described above are used, the size of the recording mark can be changed and the data can be accurately recorded and the data can be read with extremely high accuracy under the irradiation time of the laser beam in more than 5 stages. Printed by Xiao Gong Consumer Cooperative of Intellectual Property Bureau of the Ministry of Economic Affairs. When the above-mentioned light recording device 30 forms a recording mark, the size of the imaginary recording grid 40 set on the recording layer 12 is not limited by the embodiment. In particular, when the beam diameter of the laser beam can be further reduced, it is most suitable that the length is equal to the groove width. On the other hand, when recording marks of more steps such as 8 steps, it may be set to be larger than the laser beam diameter. At this time, a part of the recording mark may be larger than the beam diameter. Of course, the present invention is not limited by the structure of this embodiment, and various practical disk structures can be applied to this paper. The paper size is applicable to the Chinese National Standard (CNS) A4 specification (210X 297 mm) -16- 556175 A7 B7 5 、 Explanation of the invention (ι4), the optical recording medium without grooves can also be applied to the present invention. (Please read the precautions on the back before filling this page) Also write the laser beam in the position of the recording layer 12 It is circular, but as shown in FIG. 4, if the objective lens 4 2A and the beam shaping prism 4 2 C ′ are used together, the beam shape appears shorter in the transport direction of the optical recording medium 10, and an oblong shape or line that is longer in the direction orthogonal to it At this time, the recording mark 49 will become shorter, so the imaginary record box can be shortened. The recording density can also be increased. It can be printed and printed by the employee consumer cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. This optical recording medium 10 As shown in No. 5 2 in the first figure, it is also possible to set a plurality of pits with different reflectances in accordance with the number of segments to which the signal is modulated in advance, and to perform multi-level recording with the optical recording method of the present invention in advance on a part of the recording medium Yes, these plural recesses 5 2 and / or the recording marks 5 4 of the multi-level recorded portion can be recorded: information identifying each of the optical recording media, information identifying the optical recording medium for multi-level recording, and determining the reproduction of the recording medium The specific information such as the recommended energy data of the recorded laser beam may also be used. The specific information is that the optical recording medium can be read and re-identified during reading and / or recording, so that the multi-level recording recording medium can be reliably identified, or it can be re-identified. Individual identification, or the irradiation time of the laser beam is determined according to the number of pit segments recorded in advance, and multi-level recording and reproduction operations can be performed more reliably. Or, as shown in No. 56 of FIG. The same effect can be obtained by interrupting a part of the groove by setting the interruption section. These methods can be used alone or in combination. [Example] CD-R using dye as the recording layer is used as an optical recording medium, and it is applicable to multiple paper sizes. China National Standard (CNS) A4 specification (210X 297 mm) -17- 556175 A7 B7__ 5. Description of the invention (level recording experiment. The recording method is to be used for record evaluation Buster's ((Please read the precautions on the back before filling out this page) at least f 7 eve) DDU (using laser wavelength = 7 8 4 nm), connected to a high-frequency signal generator. Regeneration evaluation also The DDU is connected to a digital oscilloscope. Multi-level recording is performed by rotating the disk 10 at a fixed linear speed of 4 _ 8 m / sec, and the laser beam at a clock frequency of 4 Μ Η is performed at a irradiation time of 6 steps. Recording. Reproduction is also performed by rotating the magnetic disk 10 at a fixed linear speed, and measuring the difference in the reflected light quantity with a 1 mW laser beam. Then, the jitter of the recorded signal at this time is measured by a digital oscilloscope LC made by Le Croy. — 5 3 4 Take and measure. The jitter 値 is based on the shape of the recording mark formed by the laser beam irradiating the recording layer. The s5 mesh S record mark is exactly formed by the form τρ; the jitter 値 is small. This means that the data is indeed recorded, and the reproduction can be performed. The Bureau of Intellectual Property, Ministry of Economic Affairs, Beta (Industrial and Consumer Cooperative Co., Ltd. printed the jitter 値 measuring machine used this time. According to the conventional 2 値 record reproduction method, if the jitter 値 is less than 10%, it can be judged as a good record. The specific example is explained as follows: [Example 1] A penicillin dye was dissolved in a fluorinated alcohol to prepare a dye solution for recording layer formation at 2%, and the solution was changed from 2000 rpm to 5000 rpm to The spin coating (X dagger.) Method has snails on the surface. The paper size applies Chinese National Standard (CNS) A4 specifications (21 〇χ 297 公 楚) ~~ ---- -18- 556175 Ministry of Economic Affairs Printed A7 B7 printed by the M Industrial Consumer Cooperative of the 1st Bureau of Treasury. 5. Description of the invention (1 bow-shaped pre-convex rail (: / IX evening ,, / 1 / —: /, the thread pitch is 1 · 6 # m ， groove Width 0. 3 5 // m, pre-bump rail depth 0 ·] _ 8 # m) diameter 120 mm 'thickness 1 · 2 mm integrally molded polycarbonate (made by Teijin Kasei Co., Ltd. &gt; 5 &lt; Bu (Panlite) AD 5 5 0 3) The pre-bump side surface of the light-transmitting substrate is coated to form from the top surface of the recording layer to the bottom of the pre-bump track. It is an organic dye recording layer of about 200 nm. The translucent substrate used here is to record the identification signals of multi-level recording and the related data signals of the laser beam energy in advance in the optical recording medium. Second, in organic An Ag reflective layer having a thickness of about 100 nm was formed on the dye recording layer by a sputtering method. Then, a spin coating method was used on the light reflective layer to change the number of rotations from 3 00 rpm to 4 00 rpm. The number of revolutions is applied by UV-curable resin (Da Nihon Ink Chemical Industry Co., Ltd .: SD 3 1 8). After coating, a high-pressure mercury lamp is irradiated with ultraviolet rays from above the coating film to form a protective layer with a thickness of 10 // m. Use The optical recording medium thus produced is subjected to multi-level recording. Multi-level recording is an optical recording medium that rotates at a constant linear speed, and is irradiated with a laser beam with a six-stage irradiation time for recording. It is also rotated at a constant linear speed during reproduction. The 1 m W laser beam was irradiated, and the reflected light was detected to achieve reproduction. The recording and evaluation machine used was a DDU (recording wavelength: 7 8 4 nm) manufactured by Bastec (, 少 v 亍). Laser The beam energy is set to 14 m W. At this time, the recording linear velocity is 4 · 8 m / s 'The clock frequency of the recording is 4 MU Η z (2 50 nsec)' The laser irradiation time during recording is (1 ) 5 0 nsec, (2) 80 nsec, (3) 110 nsec, (4) 14 0 (Please read the precautions on the back before filling out this page) This paper size applies the Chinese National Standard (CNS) A4 specification (210X 297 mm) -19- 556175 Printed by the Consumer Cooperatives of the Intellectual Property Office of the Ministry of Economic Affairs A7 ___ B7 V. Invention Description (nsec, (5) 170nsec, (6) 200 nsec. And go around the disk for a single signal recording. Here, the shortest irradiation time T S is (1) 5 0 n s e c and the longest irradiation time T L is (6) 2 0 0 n s e c. Therefore, the (T S / T L) ratio 値 is 0.250 and satisfies the above-mentioned relational expression (1). This disk 'has achieved 6-stage multilevel recording, and its recorded data can be read reliably. In addition, the jitters of the recording marks (1) to (6) of this optical recording medium are listed in Table 1. From this table, it can be seen that all the recording marks obtained a favorable evaluation of 10% or less. [Example 2] An optical recording medium was produced under the same conditions as in Example 1. Here, the recording laser beam energy during multi-level recording is set to 1 3 ill W. At this time, the recording linear velocity was 4 · 8 m / s, and the recorded clock frequency was 4 Μ (z (250 nsec). The laser irradiation time during recording was (1) 100 nsec, (2) 125 nsec, ( 3) 150nsec, (4) 175nsec, (5) 200nsec, and (6) 225nsec. And go around the disk for a single signal recording. Here, the shortest irradiation time T S is (1) 1 0 0 n s e c and the longest irradiation time T L is (6) 2 2 5 n s e c. Therefore, the (T S / T L) ratio 値 is 0 · 4 4 4 and satisfies the above-mentioned relational expression (1). This disk has achieved 6-stage multilevel recording, and its recorded data can be read reliably. Also record (1) ~ (6) of this optical recording medium (please read the precautions on the back before filling this page)-equipment_, 11

本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） -20- 556175 A7 B7 經濟部智慧財產局工消費合作社印製 五、發明説明（18) 標誌之抖動値列示於表1 ，由該表可知所有記錄標誌均獲 得1 0 %以下的良好評價。 【實施例3】 以相同於實施例1的條件製成光記錄媒體。 將多級記錄時的記錄激光光束能量設定爲1 5 m W。 此時之記錄線速度爲4 . 8 m / s，記錄的時脈頻率爲4 MHz (250nsec)，記錄時的激光照射時間分別 爲（1)1〇1186&lt;：、（2)4〇1136(：、（3) 7 0 n s e c &gt; (4) lOOnsec、( 5 ) 13 0 nsec、（ 6 ) 1 6 0 n s e c。並繞行磁碟一周進行 各單一信號的記錄。 此處的最短照射時間T S爲（1 ) 1 0 n s e c而最 長照射時間T L爲（6 ) 1 6 0 n s e c。因此，（T S / T L )比値爲0 · 〇 6 3而滿足上記關係式（1 )。此 磁碟，均達成6階段多級記錄，並確實可靠地讀取其記錄 資料。又將此光記錄媒體的上記（1 )〜（6 )記錄標誌 之抖動値列示於表1，由該表可知所有記錄標誌均獲得 1 0 %以下的良好評價。 【比較例1】 以相同於實施例1的條件製成光記錄媒體。 將多級記錄時的激光光束能量設定爲1 7 m W。此時 之記錄線速度爲4 · 8 m/ s，記錄的時脈頻率爲4 (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 ) A4規格（210X 297公釐） -21 - 556175 A7 ___B7五、發明説明（19) MHz (250nse'c)，記錄時的激光照射時間分別 爲（l)5nsec、（2)35nsec、（3)60 nsec、（4)9〇nsec、(5) 12〇nsec 、（6)145nsec。並繞行磁碟一周進行各單一信 號的記錄。 此處的最短照射時間T S爲（1 ) 5 n s e c而最長 照射時間T L爲（6 ) 1 4 5 n s e c。因此，（T S / T L )比値爲0 · 〇 3 4而未滿足上記關係式（1 )，此 磁碟，能確實讀取6階段多級記錄的記錄資料。又將此光 記錄媒體的上記（1 )〜（6 )記錄標誌之抖動値列示於 表1 ，由該表可知所有記錄標誌均超過1 0 % ，未獲良好 評價。 【比較例2】 以相同於實施例1的條件製成光記錄媒體。 將多級記錄時的激光光束能量設定爲1 2 m W。此時 之記錄線速度爲4 · 8 m/ s，記錄的時脈頻率爲4 (請先閱讀背面之注意事項再填寫本頁) 經濟部智慈財產局員工消費合作社印繁 )ο Z 1 6 Η ( 1 Μ 爲} c C 6 6 s S η η ο ο 5 2 CX1 1± C 6 S η 單 η 各 ο 行 ο 進 2 周This paper size applies Chinese National Standard (CNS) A4 specification (210X 297 mm) -20- 556175 A7 B7 Printed by the Industrial and Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 5. Description of the invention (18) The jitter of the logo is shown in Table 1 From this table, it can be seen that all the recording marks received a good evaluation of less than 10%. [Example 3] An optical recording medium was produced under the same conditions as in Example 1. The recording laser beam energy during multi-level recording was set to 15 mW. At this time, the recording linear velocity was 4.8 m / s, the recorded clock frequency was 4 MHz (250 nsec), and the laser irradiation time during recording was (1) 1010186 &lt;:, (2) 4〇1136 ( :, (3) 7 0 nsec &gt; (4) 100 nsec, (5) 13 0 nsec, (6) 1 6 0 nsec. Each single signal is recorded around the disk once. The shortest irradiation time TS here It is (1) 1 0 nsec and the longest irradiation time TL is (6) 16 0 nsec. Therefore, the ratio (TS / TL) is 0 · 0 6 3 and satisfies the relationship (1) above. Achieve 6 stages of multi-level recording, and reliably read its recorded data. The jitters of the above (1) ~ (6) recording marks of this optical recording medium are listed in Table 1. From this table, all recording marks can be known Both achieved good evaluations of 10% or less. [Comparative Example 1] An optical recording medium was made under the same conditions as in Example 1. The laser beam energy during multi-level recording was set to 17 mW. The recording line at this time The speed is 4 · 8 m / s, and the recorded clock frequency is 4 (Please read the precautions on the back before filling this page) This paper size applies China National Standard (CNS) A4 specification (210X 297 mm) -21-556175 A7 ___B7 V. Description of the invention (19) MHz (250nse'c), the laser irradiation time during recording is (l) 5nsec, (2) 35nsec, (3) 60 nsec, (4) 90nsec, (5) 120nsec, (6) 145nsec. Each single signal is recorded around the disk for one week. The shortest exposure time TS here is (1 ) 5 nsec and the longest irradiation time TL is (6) 1 4 5 nsec. Therefore, the (TS / TL) ratio 値 is 0 · 〇 3 4 and does not satisfy the above-mentioned relationship (1), this disk can be read reliably Recording data of 6 stages of multi-level recording. The jitters of the above (1) ~ (6) recording marks of this optical recording medium are listed in Table 1. From this table, it can be known that all recording marks are more than 10%, which is not obtained. Good evaluation. [Comparative Example 2] An optical recording medium was made under the same conditions as in Example 1. The laser beam energy during multi-level recording was set to 12 m W. The recording linear velocity at this time was 4 · 8 m / s, the recorded clock frequency is 4 (please read the notes on the back before filling this page) Traditional Indian co) ο Z 1 6 Η (1 Μ is} c C 6 6 s S η η ο ο 5 2 CX1 1 ± C 6 S η o single [eta] of each row into two weeks o

S 6 6 4 錄 記 L 的 、號 C 信 別 3 分C 間、 時 C } 射 e 5 照 s C 光 η . 激 ο C 的 4 e 時1 S 錄&gt; Π 記2 ο 8 碟 磁 行 繞 並 Ο C 6 S η ο 2 2 而 C 0 /IV S ， η 此 ο 因 2 ο 1 C 6 \)/ 1 S .( Π 爲ο 2 S 2 Τ \—/ 間 時 — 射爲 照L 短 Τ 最間 的時 處射 此照 長 最 6 本紙張尺度適用中國國家標準（CNS ) Α4規格（210X 297公釐） -22- 556175 A7 ___B7_ 五、發明説明（2() (請先閱讀背面之注意事項再填寫本頁) T S / T L )比値爲〇 . 5 4 5而未滿足上記關係式（1 )，此磁碟未能確實讀取6階段多級記錄的記錄資料。又 將此光記錄媒體的上記（1 )〜（6 )記錄標誌之抖動値 列示於表1 ，由該表可知大部分記錄標誌均超過1 0 % ， 未獲良好評價。 【比較例3】 使用C D - R W爲光記錄媒體，進行多級記錄。 此CD — RW之記錄層是由非有機染料的Ag - I η 一 S b - T e構成的相變化膜所形成，藉此相變化膜的結 晶質（c r y s t a 1 )與非結晶質（a m 〇 r p h 〇 u s )的物理轉移實現 資料記錄。在此記錄層的兩面形成誘電體層，其他構成與 前述CD — R幾乎相同。 將此C D - R W記錄時的激光光束能量設定爲1 2 m W。此時之記錄線速度爲4 . 8 m / s ，記錄的時脈頻 率爲4 Μ Η z ( 2 5 0 n s e c )，記錄時的激光照射時 經濟部智慈財產局員工消費合作社印製 間分別爲（l)60nsec、（2)65nsec、（ 3)70nsec、（4)75nsec、（5)80 nsec、（ 6 ) 8 5 n s e c。並繞行磁碟一周進行各 單一信號的記錄。 此處的最短照射時間T S爲（1 ) 6 0 n s e c而最 長照射時間T L爲（6 ) 8 5 n s e c。因此，（T S / T L )比値爲◦ · 7 〇 7而未滿足上記關係式（1 )，此 C D — R W，未能確實讀取6階段多級記錄的記錄資料。 本紙張尺度適用中國國家標準（CNS ) A4規格（210X29*7公釐） -23- 556175 A7 ____B7_____ 五、發明説明（21&gt; 將此光記錄媒體的上記（1 )〜（6 )記錄標誌之抖動値 的列示於表1 ，由該表可知所有記錄標誌均超過1 0 % ’ (請先閱讀背面之注意事項再填寫本頁) 得到比比較例2 ( T S / T L = 〇 · 5 4 5 )更差的評價 【實施例4】 以和實施例1同樣地製作光記錄媒體。 此處將多級記錄時的記錄激光光束能量設定爲 1 5 . 5 m W。此時之記錄線速度爲4 · 8 m / s ，記錄 的時脈頻率爲4 Μ Η z ( 2 5 0 n s e c )，記錄時的激 光照射時間分別爲（1 ) 9 n s e c、（ 2 ) 4 2 nsec、（3)75nsec、(4) 108nsec 、（5) 141nsec、（6) 174ns ec。並繞 行磁碟一周進行各單一信號的記錄。 經濟部智慈財產局Μ工消費合作社印製 此處的最短照射時間T S爲（1 ) 9 n s e c而最長 照射時間丁 L爲（6 ) 1 7 4 n s e c。因此，（T S / T L )比値爲〇 · 〇 5 2而滿足上記關係式（1 )。此磁 碟，均達成6階段多級記錄，並確實可靠地讀取其記錄資 料。又將此光記錄媒體的上記（1 )〜（6 )記錄標誌之 抖動値列示於表1，由該表可知所有記錄標誌均獲得1 〇 %以下的良好評價。 【實施例5】 以和實施例1同樣地製作光記錄媒體。 本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） -- -24- 556175 A7 B7 ------------_ 五、發明説明（均 此處將多級記錄時的記錄激光光束能量設疋爲 1 2 · 5 m w。此時之記錄線速度爲4 . 8 m / S ，記錄 的時脈頻率爲4 Μ Η z ( 2 5 0 n s e c ) ’記錄時的激 光照射時間分別爲（1 ) 1 Ο 9 n s e c、（ 2 ) 1 3 1 nsec、（3) 153nsec、（4) 175 nsec、（5) 197nsec、( 6 ) 2 19 n s e c。並繞行磁碟一周進行各單一信號的記錄。 此處的最短照射時間T S爲（1 ) 1 0 9 n s e c而 最長照射時間T L爲（6 ) 2 1 9 n s e c。因此，（ TS/TL)比値爲0·0498而滿足上記關係式（1 )。此磁碟，均達成6階段多級記錄，並確實可靠地讀取 其記錄資料。又將此光記錄媒體的上記（1 )〜（6 )記 錄標誌之抖動値列示於表1 ，由該表可知所有記錄標誌均 獲得1 0 %以下的良好評價。 (請先閲讀背面之注意事項再填寫本頁) (裝·S 6 6 4 Record L, No. C, farewell 3 minutes C, time C} shoot e 5 photo s C light η. Exceed ο C's 4 e hour 1 S record &gt; Π record 2 ο 8 disc magnetic line Ο C 6 S η ο 2 2 and C 0 / IV S, η this ο because 2 ο 1 C 6 \) / 1 S. (Π is ο 2 S 2 Τ \ — / 时时 — shot as L The shortest time is at the most time. This paper is the longest. The paper size is applicable to the Chinese National Standard (CNS) A4 size (210X 297 mm) -22- 556175 A7 ___B7_ 5. Description of the invention (2 () (Please read the back first) Please note this page if you fill in this page) TS / TL) ratio is 0.5 4 5 and the above relationship (1) is not satisfied. This disk cannot read the 6-stage multi-level records. The above (1) to (6) recording mark jitters of optical recording media are listed in Table 1. From this table, it can be seen that most of the recording marks exceed 10% and have not been well evaluated. [Comparative Example 3] Using CD- RW is an optical recording medium that performs multi-level recording. The recording layer of this CD — RW is a phase change film composed of non-organic dyes Ag-I η-S b-T e, thereby crystallizing the phase change film. (Crysta 1) and amorphous (am 〇rph 〇us) physical transfer to achieve data recording. The recording layer on both sides of the formation of an electrophoretic layer, the other structure is almost the same as the aforementioned CD-R. When this CD-RW is recorded The laser beam energy was set to 12 m W. At this time, the recording linear velocity was 4.8 m / s, and the recorded clock frequency was 4 Μ Η z (250 nsec). The printing rooms of the employees' cooperatives of the Citizenship Bureau are (1) 60nsec, (2) 65nsec, (3) 70nsec, (4) 75nsec, (5) 80 nsec, and (6) 8 5 nsec. The disks are circulated for one week. Record each single signal. Here, the shortest irradiation time TS is (1) 60 nsec and the longest irradiation time TL is (6) 8 5 nsec. Therefore, the (TS / TL) ratio 値 is · · 7 〇7 and If the above-mentioned relation (1) is not satisfied, this CD — RW cannot read the recorded data of the multi-level records in 6 stages. This paper size is applicable to the Chinese National Standard (CNS) A4 specification (210X29 * 7 mm) -23- 556175 A7 ____B7_____ V. Description of the invention (21 &gt; This optical recording medium The above (1) ~ (6) of the jitter 値 of the recording marks are listed in Table 1. From this table, we can know that all the recording marks are more than 10% '(Please read the precautions on the back before filling this page) to get a comparison Example 2 (TS / TL = 0.55 5 5) Worse evaluation [Example 4] An optical recording medium was produced in the same manner as in Example 1. Here, the recording laser beam energy during multi-level recording is set to 15.5 mW. At this time, the recording linear velocity is 4 · 8 m / s, the recorded clock frequency is 4 Μ Η z (250 nsec), and the laser irradiation time during recording is (1) 9 nsec, (2) 4 2 nsec, (3) 75nsec, (4) 108nsec, (5) 141nsec, (6) 174ns ec. A single signal is recorded around the disk for one week. Printed by the Intellectual Property Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. Here, the shortest exposure time T S is (1) 9 n s e c and the longest exposure time T L is (6) 1 7 4 n s e c. Therefore, the (T S / T L) ratio 値 is 0. 〇 5 2 and satisfies the above-mentioned relational expression (1). This disk has achieved 6-stage multi-level recording, and its recording data is reliably read. In addition, the jitters of the recording marks (1) to (6) of this optical recording medium are shown in Table 1. From this table, it can be seen that all the recording marks obtained a favorable evaluation of 10% or less. [Example 5] An optical recording medium was produced in the same manner as in Example 1. This paper size applies to China National Standard (CNS) A4 specification (210X 297 mm)--24- 556175 A7 B7 ------------_ V. Description of invention (both here will be multi-level The recording laser beam energy during recording is set to 1 2 · 5 mw. At this time, the recording linear velocity is 4.8 m / S and the recorded clock frequency is 4 Μ Η z (2 50 0 nsec). The laser irradiation time is (1) 1 0 9 nsec, (2) 1 3 1 nsec, (3) 153 nsec, (4) 175 nsec, (5) 197 nsec, (6) 2 19 nsec. And circle the disk once. Record each single signal. Here, the shortest irradiation time TS is (1) 1 0 9 nsec and the longest irradiation time TL is (6) 2 1 9 nsec. Therefore, the (TS / TL) ratio 値 is 0 · 0498 and It satisfies the above-mentioned relationship (1). This magnetic disk has achieved 6-stage multi-level recording, and its recorded data is reliably read. The above-mentioned (1) ~ (6) recording mark jitter of this optical recording medium is also 値It is listed in Table 1. From this table, it can be known that all the recording marks have received a good evaluation of less than 10%. (Please read the precautions on the back before filling out this page) (Package ·

、1T 經濟部智慈財產局g(工消費合作社印製 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） -25- 556175 Α7 Β7 五、發明説明（2含 袠] T S / T L 値與所記錄之信號抖動値 實施例 實施例 實施例 實施例 實施例 比較例 比較例 比較例 ----- ---- 1 2 3 4 5 1 2 3 TS/TL τ—---- 0.250 0.444 0.063 0.052 0.498 0.034 0.545 0.707 各 激光照射時 5.5 7.1 8.3 8.5 7.9 11.5 11.5 13.1 抖 間⑴ 動 激光照射時 5.4 7.2 8.4 8.5 8.5 11.0 10.5 12.5 値 ._間⑵ 激光照射時 5.3 7.1 8.1 8.6 8.3 10.5 10.2 12.3 _^3) 激光照射時 5.3 7.1 8.8 8.8 8.7 10.6 9.9 12.5 _間⑷ 激光照射時 5.3 8.4 9.1 9.5 8.9 11.2 10.6 12.9 間(5) 激光照射時 5.2 8.5 9.2 9.4 9.1 11.1 10.8 13.0 間⑹ (請先閲讀背面之注意事項再填寫本頁) 經濟部智慈財產局肖工消費合作社印製 T S (秒）：激光光束之最短照射時間 τ L (秒）：激光光束之最長照射時間 【發明之效果】 依據本發明的光記錄方法及光記錄媒體，可依記Μ @ 資料進行多級的記錄，並且能改善讀取記錄標誌的信號特· 性0 本紙張尺度適用中國國家標準（CNS ) Α4規格（210Χ 297公釐） -26- 556175 A7 —___ B7_ 五、發明説明（24 【圖面之簡要說明】 【第1圖】相關於本發明光記錄媒體之實施形態例主 要部分局部剖面立體圖。 【第2圖】以激光光束在該記錄媒體記錄資料之光露己 錄裝置方塊圖。 【第3圖】以該記錄媒體在記錄層形成記錄標誌時， 亥記錄標誌與假想記錄格及其光反射率間相互關係之模式 圖。 【第4圖】改變照射假想記錄格之激光光束形狀之簡 略立體圖。 (請先閱讀背面之注意事項再填寫本頁 經濟部智慧財產局S工消費合作社印製 體 置器格 媒 裝動錄 錄層 膜層錄 驅記 記錄板槽射護記軸光光想 1光記基溝反保光主激激假 ···♦···· ·· ·_····#···· ^ 02468002680 號 11111233334 圖 本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） -27- 556175 A7 B7 五、發明説明（2$ 4 2 :記錄光學素 4 2 A :物鏡 4 2 B :半透明反射鏡 42C:光束整形稜鏡 4 4 :聚焦伺服電路 4 6 :輸出伺服電路 4 8 A〜4 8 G、4 9、5 4 :記錄標誌 5 2 :凹穴 5 6 :溝槽中斷部 D :光束 (請先閲讀背面之注意事項再填寫本頁) •裝· J ~~~、1Τ、 1T Intellectual Property Bureau of the Ministry of Economic Affairs (printed by the Industrial and Consumer Cooperatives, the size of the paper is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) -25- 556175 Α7 Β7 V. Description of the invention (2)値 and recorded signal jitter 値 Example Example Example Example Example Comparative Example Comparative Example ----- ---- 1 2 3 4 5 1 2 3 TS / TL τ ------ 0.250 0.444 0.063 0.052 0.498 0.034 0.545 0.707 When each laser is irradiated 5.5 7.1 8.3 8.5 7.9 11.5 11.5 13.1 When the laser is irradiated 5.4 7.2 8.4 8.5 8.5 8.5 11.0 10.5 12.5 値 ._between the irradiated 5.3 7.1 8.1 8.6 8.3 10.5 10.2 12.3 _ ^ 3) During laser irradiation 5.3 7.1 8.8 8.8 8.7 10.6 9.9 12.5 _ During laser irradiation 5.3 8.4 9.1 9.5 8.9 11.2 10.6 12.9 rooms (5) During laser irradiation 5.2 8.5 9.2 9.4 9.1 11.1 10.8 13.0 rooms (please first Read the notes on the back and fill in this page) Printed by Xiao Gong Consumer Cooperative, Intellectual Property Bureau of the Ministry of Economic Affairs TS (seconds): the minimum irradiation time of the laser beam τ L (seconds): Maximum irradiation time of light beam [Effect of the invention] According to the optical recording method and the optical recording medium of the present invention, multi-level recording can be performed according to the M @ data, and the signal characteristics of reading the recording mark can be improved. Applicable to China National Standard (CNS) A4 specification (210 × 297 mm) -26- 556175 A7 —___ B7_ V. Description of the invention (24 [Brief description of the drawing] [Figure 1] Related to the implementation of the optical recording medium of the present invention A partial cross-sectional perspective view of the main part of the morphological example. [Fig. 2] A block diagram of a recording device for recording data with a laser beam on the recording medium. [Fig. 3] When a recording mark is formed on the recording layer with the recording medium, the recording is performed. A schematic diagram of the relationship between the logo and the hypothetical record cell and its light reflectance. [Figure 4] A simplified three-dimensional view of the shape of the laser beam irradiating the hypothetical record cell. (Please read the precautions on the back before filling out the wisdom of the Ministry of Economic Affairs on this page Property Bureau S Industrial Consumer Cooperative Co., Ltd. Printed Device Set Media Recording Recording Film Film Recording Recording Recording Slot Shooting Recording Axis Light Light Thinking 1 Light Marking Gully Reverse Light Protection Excited Fake ... ♦ ♦ ............ __............ ^ 02468002680 No. 11111233334 The paper size of this paper applies the Chinese National Standard (CNS) A4 specification (210X 297 mm) -27- 556175 A7 B7 V. Description of the invention (2 $ 4 2: Recording optics 4 2 A: Objective lens 4 2 B: Semi-transparent mirror 42C: Beam shaping 稜鏡 4 4: Focus servo circuit 4 6: Output servo circuit 4 8 A ~ 4 8 G, 4 9, 5 4: Recording mark 5 2: Cavity 5 6: Groove interruption D: Beam (please read the precautions on the back before filling this page) • Mounting J ~~~, 1T

經濟部智慧財產局員工消費合作社印製 本紙張尺度適用中國國家標準（CNS ) A4規格（210Χ 297公釐） -28-Printed by the Employees' Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs This paper applies the Chinese National Standard (CNS) A4 specification (210 × 297 mm) -28-

Claims (1)

556175 A8 B8 C8 D8 々、申請專利範圍 1 1 · 一種光記錄方法，係由激光光束照射在透光性基 板上記錄層之光記錄媒體以記錄資料，其特徵爲： 在前記記錄層，以前記激光光束相對移動方向之任意 單位長度及與其直交方向任意單位寬度，連續設定可將單 位記錄標誌加以記錄之假想記錄格，並且 對於複數前記假想記錄格加以規定，以可將照射時間 切換成5階段以上，且該5階段以上之照射時間中最長照 射時間T L與最短照射時間T S之比値爲滿足0 . 〇 5 &lt; T S / T L &lt; 0 · 5關係之狀態下照射前記激光光束，形 成大小相異之複數記錄標誌。 2 .如申請專利範圍第1項所記載之光記錄方法，其 中 前記激光光束照射所形成大小相異之前記複數記錄標 記中，含有小於讀取激光之聚光光束直徑的記錄標誌。 3 .如申請專利範圍第1或2項所記載之光記錄方法 ，其中 前記激光光束之前記最長照射時間T L設定爲2 X l〇_8&lt;TL&lt;lxl〇_6(秒）。 4 . 一種光記錄媒體，係由激光光束照射記錄層以形 成記錄標誌達成資料之記錄’且對此記錄標誌照射讀取激 光光束以讀取所記錄之資料’其特徵爲： 在前記記錄層，以激光光束與記錄層之相對移動方向 之任意單位長度及與其直交方向之單位寬度’在前記移動 方向連續加以設定假想記錄格’在此假想記錄格之前記記 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐) ： (請先閲讀背面之注意事項再填寫本頁) -裝. 經濟部智慧財產局員工消費合作社印製 556175 A8 B8 C8 D8六、申請專利範圍 2 錄層，以可對應於激光光束照射時間之5階段以上之變調 形成大小相異之記錄標誌，此記錄標誌對於假想記錄格之 面積比與透光率之中，至少對於因面積比而改變之光反射 率產生變調反應，以實現資料之5階段以上多級記錄，前 記記錄層對於前記5階段以上之前記照射時間中之最長照 射時間T L與最短照射時間T S之比値，以滿足〇 . 〇 5 &lt; T S / T L &lt; 0 . 5關係之狀態下照射前記激光光束， 形成大小相異之複數記錄標誌所構成。 5 .如申請專利範圍第4’項所記載之光記錄媒體，其 中前記記錄層，爲含有有機染料所構成。 6 .如申請專利範圍第4項所記載之光記錄媒體，其 中前記激光光束之前記最長照射時間T L設定爲2 X 1 0 - 8 &lt; T L &lt; 1 X 1 0 - 6 (秒）。 7 .如申請專利範圍第6項所記載之光記錄媒體，其 中前記記錄層，爲含有有機染料所構成。 (請先閲讀背面之注意事項再填寫本頁) •裝· 訂 線 經濟部智慧財產局員工消費合作社印製 本紙張尺度適用中國國家楯準（CNS ) A4規格（210X297公着）556175 A8 B8 C8 D8 々 、 Scope of patent application 1 1 · An optical recording method, which uses a laser beam to irradiate a light recording medium on a light-transmitting substrate with a recording layer to record data, which is characterized by: Arbitrary unit length of the laser beam relative movement direction and arbitrary unit width in the direction orthogonal to it. Continuously set the imaginary record grid that can record the unit record mark, and specify the imaginary record grid of plural pre-records, so that the irradiation time can be switched to 5 stages. Above, and the ratio of the longest irradiation time TL to the shortest irradiation time TS among the irradiation times of 5 stages or more is to satisfy the relationship of 0. 05 &lt; TS / TL &lt; Distinct plural record marks. 2. The optical recording method according to item 1 of the scope of the patent application, wherein the pre-recorded plural record marks having different sizes formed by the pre-laser laser beam irradiation contain recording marks smaller than the diameter of the focused beam of the read laser. 3. The optical recording method described in item 1 or 2 of the scope of the patent application, wherein the longest exposure time T L before the laser beam is set to 2 X 10_8 <TL <1 x 10_6 (seconds). 4. An optical recording medium, wherein a laser beam is irradiated to the recording layer to form a record of the recording mark and the data is recorded, and the recording mark is irradiated with a reading laser beam to read the recorded data. The characteristics are: The arbitrary unit length in the relative movement direction of the laser beam and the recording layer and the unit width in the direction orthogonal to it are used to continuously set the imaginary record cell in the previous movement direction. Note that before this imaginary record cell, the paper dimensions are applicable to Chinese national standards (CNS ) A4 specification (210X297 mm): (Please read the precautions on the back before filling out this page)-Packing. Printed by the Consumers' Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 556175 A8 B8 C8 D8 It can correspond to more than 5 stages of laser beam irradiation time to form recording marks of different sizes. This recording mark is generated for the area ratio and light transmittance of the imaginary recording grid, at least for the light reflectance that changes due to the area ratio. Tune response to achieve multi-level records of more than 5 stages of data, the pre-recording layer The ratio of the longest irradiation time TL to the shortest irradiation time TS in the previous irradiation time is to satisfy the relationship between 0.05 and TS / TL and 0.5, and a plurality of records having different sizes are formed by irradiating the laser beam before the irradiation. Sign. 5. The optical recording medium described in item 4 'of the scope of patent application, wherein the pre-recording layer is composed of an organic dye. 6. The optical recording medium described in item 4 of the scope of the patent application, wherein the longest irradiation time T L before the laser beam is set to 2 X 1 0-8 &lt; T L &lt; 1 X 1 0-6 (seconds). 7. The optical recording medium described in item 6 of the scope of patent application, wherein the pre-recording layer is composed of an organic dye. (Please read the precautions on the back before filling out this page) • Binding and Binding Line Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs This paper size applies to China National Standard (CNS) A4 (210X297)