501118 . A7 ____ B7___ 五、發明說明（1 ) 【發明所屬之技術範圍】 (請先閱讀背面之注咅？事項再填寫本頁) 本發明你有關光資訊記錄媒體者，尤其是有關於在於 透光性之基板上，至少具有光吸收層及光反射層，可寫入 之光資訊記錄媒體者。 【以往之技術】 ' 在於具有以往之可寫入之構造的光資訊記錄媒體（所 謂C D — R )中，做爲將該調變度變大之方法，有採用將 光吸收層等之記錄層變厚，將記錄層之發熱變大，或將記 錄層之光吸收變大等，變更記錄層之色素或色素層之設計 的方法。 於如此之光資訊記錄媒體中，採用將記錄層變厚，或 將記錄層之光吸收變大等之方法時，有光反射層之反射率 下降之問題。 又，將色素之發熱變大之時，易於產生形成之凹坑扭 曲，難以進行良好之記錄的問題。 【發明所欲解決之問題】 本發明係有鑑於以上之諸待問題而成者，以提供伴隨 調變度之提升，可得良好之記錄狀態的光資訊記錄媒體爲 課題者。 又，本發明係提供將光反射層之厚度及記錄層（光吸 收層之厚度）與光反射層之熱擴散係數關連加以調節的光 資訊記錄媒體爲課題。 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 經濟部智慧財產局員工消費合作社印製 501118 A7 _B7 ____ 五、發明說明（2 ) 又，本發明係提供調整光吸收層之發熱量，和光反射 層之熱擴散的光資訊記錄媒體爲課題。 【爲解決課題之手段】 即，本發明係將記錄層之光吸收層之變更與以往比較 ，不進行特別之變更，變更光反射層之厚度得調變度者爲 特徵。 即，光反射層係某種程度之厚度時，反射率呈飽和狀 態，變得更厚之時，反射率不會改變。於此反射率之飽和 狀態，將光反射層之厚度設定於某範圍時，反射率係保持 飽和狀態，可得知調變度較通常爲大。 就得上述效果之理由而言，可思得凹坑記錄時之記錄 層（光吸收層）中之蓄熱量的變化。吸收記錄光（雷射光 )之色素係發熱分解形成凹坑，於此凹坑形成時，記錄部 維持高溫之時，色素之分解更爲進行，調變度則變大。 光反射層係自通常金屬材料所柿成，比較有機層之記 錄層或保護層，熱擴散非常大之故，到達光反射層之熱係 馬上擴散。 但是，經由將光反射層變薄，使記錄層和保護層之間 之距離變短時，較光反射層爲厚之時，光反射層之熱擴散 之效果則變薄，保持於高溫之故，記錄層之色素分解則進 展，調變度則變大。 ‘ 在此必要之光反射層之厚度係會成爲記錄時之熱擴散· 狀態的問題之故，構成光反射層之物質之擴散係數的關係 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐) (請先閱讀背面之注意事項再填寫本頁)501118. A7 ____ B7___ V. Description of the invention (1) [Technical scope of the invention] (Please read the note on the back? Matters before filling out this page) In the present invention, you are concerned about optical information recording media, especially about The optical substrate has at least a light absorbing layer and a light reflecting layer, and can write optical information recording media. [Previous technology] 'In optical information recording media (so-called CD-R) with a conventional writable structure, as a method of increasing the modulation degree, a recording layer such as a light absorbing layer is used. A method for changing the thickness of the recording layer or the design of the pigment layer by increasing the heat generation of the recording layer or increasing the light absorption of the recording layer. In such an optical information recording medium, when the recording layer is thickened or the light absorption of the recording layer is increased, there is a problem that the reflectance of the light reflecting layer is lowered. Further, when the heat generation of the pigment is increased, the formed pits are liable to warp, making it difficult to perform good recording. [Problems to be Solved by the Invention] The present invention has been made in view of the above-mentioned problems, and aims to provide an optical information recording medium capable of obtaining a good recording state with an increase in modulation degree. The present invention also provides an optical information recording medium that adjusts the thickness of a light reflecting layer and the recording layer (thickness of the light absorbing layer) and the thermal diffusion coefficient of the light reflecting layer and adjusts it. This paper size applies to China National Standard (CNS) A4 (210 X 297 mm). Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs. The problem is an optical information recording medium that generates heat and diffuses heat from the light reflecting layer. [Means for solving the problem] That is, the present invention is characterized in that the change of the light absorbing layer of the recording layer is compared with the conventional one, and the thickness of the light reflecting layer is adjusted without changing the special change. That is, when the light reflecting layer is a certain thickness, the reflectance becomes saturated, and when it becomes thicker, the reflectance does not change. In this saturated state of reflectivity, when the thickness of the light reflecting layer is set to a certain range, the reflectance is kept in a saturated state, and it can be known that the degree of modulation is larger than usual. For the reason that the above-mentioned effect is obtained, the change in the amount of stored heat in the recording layer (light absorbing layer) during pit recording can be considered. The pigment system that absorbs the recording light (laser light) generates heat and decomposes to form pits. When the pits are formed and the recording portion is maintained at a high temperature, the pigment is decomposed and the degree of modulation becomes larger. The light reflection layer is made of ordinary metal materials. Compared with the recording layer or protective layer of the organic layer, the thermal diffusion is very large. The heat system that reaches the light reflection layer diffuses immediately. However, when the distance between the recording layer and the protective layer is shortened by thinning the light reflecting layer, the effect of thermal diffusion of the light reflecting layer becomes thinner when it is thicker than the light reflecting layer, and it is maintained at a high temperature. The decomposition of the pigment in the recording layer progresses and the modulation degree becomes larger. '' The thickness of the necessary light reflecting layer is a matter of thermal diffusion and state during recording. The relationship between the diffusion coefficients of the materials constituting the light reflecting layer is applicable to the Chinese paper standard (CNS) A4 (210 X 297 mm) (Please read the notes on the back before filling this page)
501118 A7 B7 五、發明說明（3 ) 會變得重要。 (請先閱讀背面之注意事項再填寫本頁) 例如，於同等條件之碟片中，僅將光反射層之材料變 爲金和銀之時，熱擴散係數係較金較爲大之銀係熱擴散快 之部分，記錄部無法保持於高溫之故，色素之分解無法進 行，調變度則變小。爲此，爲得同等之調變度，配合使用 之光反射層之熱擴散係數，需改變光反射層之厚度、。 即，本發明係具備具有透光性的同時，形成預設溝之 基板，和包含吸收雷射光之記錄光的色素所構成之光吸收 物質的光吸收層，和設於該光吸收層上的同時，反射雷射 光之光反射層；經由於上述光吸收層照射上述記錄光，記 錄資訊之光資訊記錄媒體中，將上述預設溝內之上述色素 之厚度呈d，將上述光反射層之厚度呈d r ，將熱擴散係 數呈/c，上述色素之發熱量呈Q，上述光吸收層之折射率 呈 η 之時，d$12〇nm、75S/C · dr$180、 2x10. 5KJ/mo 1^4xl05KJ/mo 1 > 280$η·d爲特徵之光資訊記錄媒體。 上述光吸收層之折射率η係可呈2 · 4 S η。 上述光反射層之材料係金、銀、鋁或包含此等之合金 經濟部智慧財產局員工消費合作社印製 〇 以下，更具體地加以說明。 圖1係本發明之光資訊記錄媒體1之擴大截面圖，光 資訊記錄媒體1係具有透光性之基板2，和形成於基板2 上之光吸收層3 (記錄層），和形成於光吸收層3上之光 反射層4，和形成於光反射層4上之保護層5 ° 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 501118 A7 ___B7_ 五、發明說明（4 ) 於基板2，呈螺旋狀地形成預設溝6。預設溝6之左 右有預設溝6以外之部分，即具有巷部7。 (請先閱讀背面之注意事項再填寫本頁) 然而，基板2和光吸收層3係經由第1之層界8互相 加以連接。光吸收層3和光反射層4係經由第2之層界9 加以連接。光反射層4和保護層5係經由第3之層界1 0 加以連接。 ' 如圖示所示，於光資訊記錄媒體1照射記錄光（記錄 用之雷射光）L 1之時，光吸收層3中之色素經由吸收雷 射光L 1之能量而發熱，於基板2側產生熱變形，形成凹 坑1 1。又於記錄部分，經由光吸收層3中之色素之發熱· 分解，變化凹坑1 1部分之折射率。 於此凹坑1 1部分經由照射再生光（再生用雷射光） L 2，經由凹坑1 1部分之基板2之變形，以及凹坑1 1 部分及非凹坑部分（巷部& )之折射率差爲原因的光學1 性相位差所產生之光繞射，可得凹坑對比，而讀取資訊。 於上述之光資訊記錄媒體1中，令預設溝6內之色素 之厚度呈d，將光反射層4之厚度呈d r ，將熱擴散係數 呈/c，色素之發熱量呈Q，光吸收層3之折射率呈η之時 經濟部智慧財產局員工消費合作社印製 d ^ 1 2 0 n m 75^/c . dr^l80 2xl05KJ/mo 1^4xl05KJ/mo 1 2 8 0 ^ n . d 2 · 4 S n者爲佳。 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 經濟部智慧財產局員工消費合作社印制取 501118 A7 B7_ 五、發明說明（5 ) 惟，/c = (K/(c · ί>) ) 1/2，K係光反射層4之熱 傳導率，c係比熱、ρ爲密度者。 半預設溝6內之色素之厚度d較1 2 0 nm爲厚之時 ，易於預設溝6內蓄積熱，即難以放熱，色素之分解過度 進展，凹坑1 1被扭曲，顫動會惡化。然而，可由後述之 實施例及比較例可得知，厚度d係較1 0 6 n m爲大則爲 佳。 /c · d r較7 5爲小時，則難以放熱，色素之分解則 過於進行，凹坑1 1被扭曲，顫動會惡化。 /c · d r較1 80爲大時，自光反射層4之放熱過於 進展難以進行光吸收層3之記錄，而不能確保調變度。 光吸收層3之色素之發熱量Q較2 X 1 05K J/ m ο 1爲小時，不會產生記錄所需之熱量，無法確保調變 度。 Q較4xl05KJ/mo1爲大時，色素之分解則過 於進行，凹坑1 1被扭曲，顫動會惡化。 光吸收層3之光學性膜原η · d較2 8 0爲小時’無 法得調變度。然而由後述之實施例及比較例可知，光學性 膜厚η · d係較3 2 5爲小爲佳。 當光吸收層3之折射率η較2 · 4爲小之時’無法得 調變度的同時，顫動亦會惡化。 於本發明之光資訊記錄媒體中，調整有關光吸收層3 及光反射層4之發熱及放熱特性之故，可進行調變度良好 之記錄，凹坑1 1之扭曲亦可避免此點。 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） -------------t--------訂--------- (請先閱讀背面之注意事項再填寫本頁) -8- 501118 A7 B7 ____ 五、發明說明（6 ) 【發明之實施例】 接著，將本發明之實施例1〜3及比較例1〜7根據 圖2至圖6加以說明。 做爲記錄用色素配合2 0 w t %之吲哚苯并二碳喹啉 藍之NK3 3 8 6 (圖2、日本感光色素股份有限公司製 造），和同樣6 5 w t %之吲哚苯并二碳喧啉藍之 NK449 6 (圖3、日本感光色素股份有限公司製造） ，和做爲安定劑15wt%之銨的NIR4056 (圖4 、曰本化藥股份有限公司製造），使用做爲溶劑之二酮醇 爲塗布液。 於直徑120mm、厚1·2mm之聚碳酸酯製之基 •板1表面，將螺旋狀之預設溝6以溝間隔1 · 6 μ m，溝 寬0 · 45//m，溝深〇 · 175//m加以形成，將上述 塗布液經由旋轉塗布法塗布於溝面，形成預設溝6內之色 素之厚度12 0 nm之記錄層（光吸收層3)。 於此記錄層將銀（A g )經由濺射法，形成厚約8 0 nm(/c · dr々105)之金屬製之光反射層4。 更且，於此光反射層4上，塗布U V硬化樹脂，照射 紫外線，形成厚平均爲3 之保護層5 ’得光資訊記錄 媒體1。 【實施例2】 於實施例1中，得厚約6〇nm (/c · dr与78) 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） (請先閱讀背面之注意事項再填寫本頁) ▼裝-------訂i ------- 經濟部智慧財產局員工消費合作社印製 -9 - 501118 A7 B7 _ 五、發明說明（7 ) 之金屬製之光反射層4。 【實施例3】 於實施例1中，得厚約1 3 0 n m ( /c · d r与 170)之金屬製之光反射層4。 【比較例1】 於實施例1中，除預設溝6內之色素厚度呈1 〇 6 n m以外，與實施例1同樣地得光資訊記錄媒體1。 【比較例2】 於實施例1中，除預設溝6內之色素厚度呈1 3 0 n m以外，與實施例1同樣地得光資訊記錄媒體i。 【比較例3】 於實施例1中，形成厚約55nm(/c · dr与 7 1 · 5 )之金屬製之光反射層4之外’與實施例1同樣 地得光資訊記錄媒體1。 【比較例4】 於實施例1中，形成厚約15〇nm(/c · dr与 1 9 5 )之金屬製之光反射層4之外’與實施例1同樣地 得光資訊記錄媒體1。 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） (請先閱讀背面之注意事項再填寫本頁) ---丨丨丨 —訂- !1!!' 經濟部智慧財產局員工消費合作社印製 -10- 501118 A7 ____B7__ 五、發明說明（8 ) 【比較例5】 (請先閱讀背面之注意事項再填寫本頁) 於實施例1中，做爲記錄用色素配合85wt% NK3386 (圖2)之時，使用該色素之發熱量Q爲4 X 1 〇 5 K J /m 〇 1 < Q者之外，與實施例1同樣地得光 資訊記錄媒體1。 【比較例6】 於實施例1中做爲記錄用色素配合8 5 w t % NK4496 (圖3)之時，使用該色素之發熱量Q爲Q < 2 X 1 0 5 K J /m 〇 1者之外，與實施例1同樣地得光 資訊記錄媒體1。 【比較例7】 於實施例1中，做爲.記錄用色素配合15wt% NK338696 (圖 2) ，15wt%NK4496 ( 圖3) 、25wt%NIR405 (圖4)之外，與實施 例1同樣地得光資訊記錄媒體1。 經濟部智慧財產局員工消費合作社印製 對於上述各光資訊記錄媒體1之記錄，僞使用以下之 記錄機進行Ο P C記錄。即，4倍速記錄（4 X )係經由 Y A M A Η A 4 0 〇 t ，1倍速記錄（1 X )係經由 PHILIPS CDD2000加以進行。 對於各實施例及比較例所得結果，示於圖5及圖6所 厚之圖素。 圖5係顯示/c · dr、n、d、η · d及Q，圖6係 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） -11 - 501118 A7 B7 五、發明說明（9 ) 顯示調娛度及顫動。然而圖6係亦各顯示調變度及顫動之 規格値。 (請先閱讀背面之注意事項再填寫本頁) 實施例1〜3顯示滿足調變.度及顫動之規格値之値的 一方，比較例1〜7未顯示滿足之値。 例如比較例1係調變度低，由規格排除。 比較例2係調變度高，顫動値則自規格脫離。' 比較例3係調變度高，顫動値則自規格脫離。 比較例4係1 X記錄之3 T之調變度爲小，自規格脫 離。 比較例5係調變度高，顫動値則自規格脫離。 比較例6係調變度低，自規格脫離。 比較例7係調變度低，自規格脫離。 【發明之效果】 根據以上之本發明時，將光反射層及記錄層（光吸收 層）之厚度與光反射層之熱擴散係數値及記錄層之發熱量 等關連加以調節，調節記錄時之記錄部的蓄熱效果，提升 調變度的同時，可得良好之記錄狀態者。 經濟部智慧財產局員工消費合作社印製 【圖面之簡單說明】 【圖1】 根據本發明之光資訊記錄媒體1之擴大截面圖。 【圖2】 / 顯示於實施例及比較例所使用之吲哚苯并二碳喹啉藍 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） -12 - 經濟部智慧財產局員工消費合作社印製 501118 A7 B7_ 五、發明說明（1〇) 之NK3386之構造式圖。 【圖3】 同，顯示吲哚苯并二碳喹啉藍之N K 4 4 9 6之構造 式圖。 【圖4】 同，顯示銨之NIR405之構造式圖。 ' 【圖5】 顯示對於實施例及比較例所得結果（/c · d r、η、 〇1、！1.(1及〇)之圖表。 【圖6】 同，顯示調變度及顫動之圖表。 【符號說明】 1 光資訊記錄媒體（圖1 ) 2 透明性之基板 3 光吸收層（記錄層） 4 光反射層 5 保護層 6 螺旋狀之預設溝 7 巷部 8 基板2和光吸收層3間之第1之層界 9 光吸收層3和光反射層4間之第2之層界 10 光反射層4和保護層5間之第3之層界 11 凹坑 L 1 記錄光（記錄用雷射光） L 2 再生光（再生用雷射光）501118 A7 B7 5. Explanation of the invention (3) will become important. (Please read the precautions on the back before filling out this page.) For example, when the material of the light reflection layer is changed to gold and silver in the same condition of the disc, the thermal diffusion coefficient is larger than that of silver. In the part where the thermal diffusion is fast, the recording portion cannot be kept at a high temperature, decomposition of the pigment cannot be performed, and the modulation degree becomes small. For this reason, in order to obtain the same degree of modulation, the thickness of the light reflection layer needs to be changed in conjunction with the thermal diffusion coefficient of the light reflection layer used. That is, the present invention is a light absorbing layer provided with a substrate having translucency and forming a predetermined groove, and a light absorbing material composed of a pigment that absorbs recording light of laser light, and a light absorbing layer provided on the light absorbing layer. At the same time, a light reflecting layer that reflects laser light; the light information recording medium that records the information through the light absorbing layer and records the information, the thickness of the pigment in the preset groove is d, and the thickness of the light reflecting layer is d. The thickness is dr, the thermal diffusion coefficient is / c, the calorific value of the pigment is Q, and when the refractive index of the light absorbing layer is η, d $ 120, 75S / C · dr $ 180, 2x10. 5KJ / mo 1 ^ 4xl05KJ / mo 1 > 280 $ η · d is a characteristic light information recording medium. The refractive index η of the light absorbing layer may be 2 · 4 S η. The material of the above light reflecting layer is printed by gold, silver, aluminum, or alloys containing these, printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs. ○ The following explains it in more detail. FIG. 1 is an enlarged cross-sectional view of an optical information recording medium 1 of the present invention. The optical information recording medium 1 is a light-transmitting substrate 2 and a light absorbing layer 3 (recording layer) formed on the substrate 2 and formed on light. The light reflecting layer 4 on the absorbing layer 3 and the protective layer 5 formed on the light reflecting layer 4 ° This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) 501118 A7 ___B7_ V. Description of the invention ( 4) A predetermined groove 6 is formed on the substrate 2 in a spiral shape. To the left and right of the preset groove 6, there are portions other than the preset groove 6, that is, the lane 7 is provided. (Please read the cautions on the back before filling out this page.) However, the substrate 2 and the light absorbing layer 3 are connected to each other via the first layer boundary 8. The light absorption layer 3 and the light reflection layer 4 are connected via a second layer boundary 9. The light reflecting layer 4 and the protective layer 5 are connected via a third layer boundary 10. 'As shown in the figure, when the optical information recording medium 1 irradiates the recording light (laser light for recording) L 1, the pigment in the light absorption layer 3 generates heat by absorbing the energy of the laser light L 1 and is on the substrate 2 side. Thermal deformation occurs and pits 1 1 are formed. In the recording portion, the refractive index of the pit 11 is changed by the heat generation and decomposition of the pigment in the light absorbing layer 3. Here, 1 part of the pit 11 is irradiated with regeneration light (regeneration laser light) L 2, deformation of the substrate 2 through the pit 1 1 part, and 1 of the pit 1 part and the non-pit part (lane part &). Diffraction of light caused by optical phase difference caused by refractive index difference can be obtained by pit contrast, and information can be read. In the above-mentioned optical information recording medium 1, the thickness of the pigment in the preset groove 6 is d, the thickness of the light reflecting layer 4 is dr, the thermal diffusion coefficient is / c, the calorific value of the pigment is Q, and the light is absorbed. Printed at the time when the refractive index of layer 3 is η ^ 1 2 0 nm 75 ^ / c. Dr ^ l80 2xl05KJ / mo 1 ^ 4xl05KJ / mo 1 2 8 0 ^ n. D 2 · 4 S n is preferred. This paper size applies to the Chinese National Standard (CNS) A4 (210 X 297 mm) printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 501118 A7 B7_ V. Description of the invention (5) However, / c = (K / (c · Ί &))) 1/2, K is the thermal conductivity of the light reflecting layer 4, c is the specific heat, and ρ is the density. When the thickness d of the pigment in the semi-preset groove 6 is thicker than 120 nm, it is easy to preset the heat accumulation in the groove 6, that is, it is difficult to radiate, the decomposition of the pigment progresses excessively, the pit 11 is distorted, and the tremor will worsen . However, it can be seen from the examples and comparative examples described later that the thickness d is preferably larger than 106 nm. / c · d r is smaller than 75, it is difficult to exotherm, the decomposition of the pigment is too advanced, the pits 11 are distorted, and the chattering is worsened. When / c · d r is larger than 180, the exothermic heat from the light reflecting layer 4 is too advanced to record the light absorbing layer 3, and the modulation degree cannot be secured. The calorific value Q of the pigment of the light absorbing layer 3 is smaller than 2 X 105K J / m ο 1, and the heat required for recording is not generated, and the modulation degree cannot be ensured. When Q is larger than 4xl05KJ / mo1, the decomposition of the pigment is too advanced, the pits 11 are distorted, and the chattering is worsened. The optical film original η · d of the light absorbing layer 3 is smaller than 280 ', and the modulation degree cannot be obtained. However, it will be understood from the examples and comparative examples described later that the optical film thickness η · d is preferably smaller than 3 2 5. When the refractive index η of the light absorbing layer 3 is smaller than 2 · 4 ', the modulation degree cannot be obtained, and at the same time, the chattering becomes worse. In the optical information recording medium of the present invention, for adjusting the heating and exothermic characteristics of the light absorbing layer 3 and the light reflecting layer 4, recording with a good modulation degree can be performed, and the distortion of the pits 11 can also avoid this. This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) ------------- t -------- Order -------- -(Please read the notes on the back before filling this page) -8- 501118 A7 B7 ____ V. Description of the Invention (6) [Inventive Examples] Next, Examples 1 to 3 and Comparative Examples 1 to 3 of the present invention will be described. 7 is explained with reference to FIGS. 2 to 6. NK3 3 8 6 (Figure 2, manufactured by Nippon Photographic Pigment Co., Ltd.) was compounded with 20 wt% of indolobenzodiquinoline blue as a recording pigment, and 65 wt% of indolobenzodi was mixed. Carboline blue NK449 6 (Figure 3, manufactured by Japan Photosensitive Pigment Co., Ltd.), and NIR4056 (15% by weight of ammonium as a stabilizer) (Figure 4, manufactured by Yomoto Chemical Co., Ltd.) are used as solvents. Diketol is a coating liquid. On the surface of a polycarbonate substrate 120 having a diameter of 120 mm and a thickness of 1.2 mm, spiral preset grooves 6 were spaced by grooves 1. 6 μm, groove width 0 · 45 // m, and groove depth 0 · 175 // m was formed, and the coating liquid was applied on the groove surface by a spin coating method to form a recording layer (light absorbing layer 3) having a thickness of 120 nm in the pigment in the predetermined groove 6. A light reflecting layer 4 made of metal (Ag) having a thickness of about 80 nm (/ c · dr々105) was formed on the recording layer by sputtering. Furthermore, a UV curing resin was coated on the light reflection layer 4 and irradiated with ultraviolet rays to form a protective layer 5 'having a thickness average of 3 to obtain an optical information recording medium 1. [Example 2] In Example 1, a thickness of about 60 nm (/ c · dr and 78) was obtained. The paper size is applicable to China National Standard (CNS) A4 (210 X 297 mm). (Please read the back Please fill in this page again for attention) ▼ ---------- Order i ------- Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs -9-501118 A7 B7 _ V. Description of Invention (7) Metal-made light reflecting layer 4. [Embodiment 3] In Embodiment 1, a metal light reflecting layer 4 having a thickness of about 130 nm (/ c · dr and 170) was obtained. [Comparative Example 1] In Example 1, the optical information recording medium 1 was obtained in the same manner as in Example 1, except that the pigment thickness in the predetermined groove 6 was 10 6 nm. [Comparative Example 2] In Example 1, the optical information recording medium i was obtained in the same manner as in Example 1, except that the thickness of the pigment in the predetermined groove 6 was 130 nm. [Comparative Example 3] In Example 1, an optical information recording medium 1 was obtained in the same manner as in Example 1 except that a metal light reflecting layer 4 having a thickness of about 55 nm (/ c · dr and 7 1 · 5) was formed. [Comparative Example 4] In Example 1, an optical information recording medium 1 was formed in the same manner as in Example 1 except that a metal light reflecting layer 4 having a thickness of about 150 nm (/ c · dr and 195) was formed. . This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) (Please read the precautions on the back before filling out this page) --- 丨 丨 丨 -Order-! 1 !! 'Intellectual Property of the Ministry of Economic Affairs Printed by the Bureau's Consumer Cooperatives -10- 501118 A7 ____B7__ 5. Description of the Invention (8) [Comparative Example 5] (Please read the precautions on the back before filling out this page) In Example 1, use 85wt as the pigment for recording At the time of% NK3386 (Fig. 2), the calorific information recording medium 1 was obtained in the same manner as in Example 1 except that the calorific value Q using the pigment was 4 X 105 KJ / m 〇1 < Q. [Comparative Example 6] When 8 5 wt% NK4496 (Fig. 3) was blended as a recording pigment in Example 1, the calorific value Q of the pigment was Q < 2 X 1 0 5 KJ / m 〇1 Other than that, the optical information recording medium 1 was obtained in the same manner as in the first embodiment. [Comparative Example 7] In Example 1, except that 15% by weight of NK338696 (Figure 2), 15% by weight of NK4496 (Figure 3), and 25% by weight of NIR405 (Figure 4) were used as recording pigments, it was the same as Example 1. Delight information recording medium 1. Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs For the records of the above-mentioned optical information recording media 1, the following recorders are used to perform 0 PC recording. That is, 4x speed recording (4X) is performed via Y A M A Η A 4 0 t, and 1x speed recording (1X) is performed via PHILIPS CDD2000. The results obtained in the respective examples and comparative examples are shown in thicker pixels in Figs. Figure 5 shows / c · dr, n, d, η · d, and Q. Figure 6 shows the paper size applicable to Chinese National Standard (CNS) A4 (210 X 297 mm) -11-501118 A7 B7 V. Invention Explanation (9) shows the degree of entertainment and flutter. However, Fig. 6 also shows the specifications of modulation and flutter. (Please read the precautions on the back before filling out this page.) Examples 1 to 3 show one that satisfies the specifications of modulation, degree, and flutter, and Comparative Examples 1 to 7 do not show satisfactory ones. For example, Comparative Example 1 has a low modulation degree and is excluded from the specifications. Comparative Example 2 had a high degree of modulation, and flutter was out of specification. 'Comparative Example 3 has a high degree of modulation, and flutter is out of specification. Comparative Example 4 has a 3 T modulation with a 1 X record which is small and deviates from the specification. Comparative Example 5 had a high degree of modulation, and fluttering was out of specification. Comparative Example 6 has a low modulation degree and is out of specification. Comparative Example 7 has a low modulation degree and is out of specification. [Effects of the Invention] According to the above invention, the thickness of the light reflecting layer and the recording layer (light absorbing layer) is related to the thermal diffusion coefficient of the light reflecting layer and the amount of heat generated by the recording layer. The thermal storage effect of the recording unit can improve the degree of modulation and obtain a good recording state. Printed by the Consumer Cooperative of Intellectual Property Bureau of the Ministry of Economic Affairs [Simplified description of the drawing] [Fig. 1] An enlarged sectional view of the optical information recording medium 1 according to the present invention. [Figure 2] / The indolebenzodiaquinoline blueprint paper size shown in the examples and comparative examples applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) -12-Intellectual Property Bureau, Ministry of Economic Affairs Printed by employee consumer cooperative 501118 A7 B7_ V. Schematic diagram of NK3386 for invention description (10). [Fig. 3] Fig. 3 is a structural formula diagram of N K 4 4 9 6 of indolebenzodiquinoline blue. [Figure 4] Same, showing the structural formula of NIR405 of ammonium. '[Fig. 5] A graph showing the results obtained for the examples and comparative examples (/ c · dr, η, 〇1,! 1 (1 and 〇). [Fig. 6] Similarly, a graph showing the degree of modulation and flutter [Description of symbols] 1 Optical information recording medium (Figure 1) 2 Transparent substrate 3 Light absorbing layer (recording layer) 4 Light reflecting layer 5 Protective layer 6 Spiral preset groove 7 Alley 8 Substrate 2 and light absorbing layer First layer boundary between 3 9 Second layer boundary between light absorbing layer 3 and light reflecting layer 4 Third layer boundary between light reflecting layer 4 and protective layer 5 11 Pit L 1 Recording light (for recording Laser light) L 2 regeneration light (laser light for reproduction)
本紙張尺度適用中國國家標準（CNS)A4規格(210 X 297公釐） "I (請先閱讀背面之注音？事項再填寫本頁)This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) " I (Please read the note on the back? Matters before filling out this page)