1241579 A7 經濟部智慧財產局員工消費合作社印製 ___ B7五、發明説明（9 【發明領域】 本發明是關於光記錄媒體。 【發明背景】 【習知技藝之說明】 習知的C D (光碟，C 〇 m p a ct D i s c )或D V D (數位 影音光碟，Digital Versatile Disc)等的光記錄媒體（碟片 )在被製造的狀態（初期狀態）中，使種種特性（電氣特 性或機械特性）在決定的規格內而製造，再者爲了長期可 靠度的保證，在高溫高濕保存試驗等的加速試驗前後的種 種特性的惡化程度也被規定。此長期可靠度的指標之一在 加速試驗前後的碟片全體的翹曲量的變化量爲一定値以內 被要求。這種習知的C D或D V D等主要由聚碳酸酯（ Polycarbonate)構成的光透過性基板（光透過層）構成， 翹曲的主要原因爲前述聚碳酸酯基板與可記錄構成的情形 至少記錄層與反射層與保護層，再者再生專用所構成的情 形至少反射層與保護層等的伸縮所產生的應力的平衡造成 者，故確認前述長期可靠度的試驗爲實施加速試驗（高溫 高濕或僅利用高溫或高濕的加速試驗），進行充分的管理 〇 另一方面，例如如日本特開1 9 9 6 — 2 3 5 6 3 8 號公報所揭示的，在支持基體上在記錄及/或可再生的狀 態下配設有記錄再生層，在其上形成光透過層，用以由該 光透過層側照射進行記錄/再生的雷射束的光碟片（光記 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） (請先閱讀背面之注意事項再填寫本頁) •裝·1241579 A7 Printed by the Consumer Cooperative of Intellectual Property Bureau of the Ministry of Economic Affairs ___ B7 V. Invention Description (9 [Field of Invention] The present invention relates to optical recording media. [Background of the Invention] [Description of Known Techniques] Known CD (CD-ROM) , Optical recording media (disc) such as C ompa ct D isc) or DVD (Digital Versatile Disc) in the state of manufacture (initial state), various characteristics (electrical or mechanical characteristics) It is manufactured within the determined specifications, and in order to ensure long-term reliability, the degree of deterioration of various characteristics before and after accelerated tests such as high-temperature and high-humidity storage tests is also specified. One of the indicators of this long-term reliability is before and after the accelerated test. The amount of change in the amount of warping of the entire disc is required to be within a certain range. This conventional CD or DVD is mainly composed of a light-transmitting substrate (light-transmitting layer) made of polycarbonate, which is warped. The main reason is that the case of the aforementioned polycarbonate substrate and recordable structure is at least the recording layer, the reflective layer, and the protective layer, and the case of the structure for exclusive reproduction to Due to the balance caused by the stress caused by the expansion and contraction of the reflective layer and the protective layer, the test to confirm the long-term reliability is to perform an accelerated test (high temperature and high humidity or accelerated test using only high temperature or high humidity) and perform adequate management. On the other hand, as disclosed in, for example, Japanese Patent Laid-Open No. 1 9 9 — 2 3 5 6 3 8, a recording and reproducing layer is provided on a support substrate in a recorded and / or reproducible state, and a support layer is provided thereon. A light transmission layer is formed to irradiate a laser beam for recording / reproducing from the side of the light transmission layer. (The size of the optical paper is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm). Please read the back first (Please fill in this page for the matters needing attention)
、1T -線 -4 - 1241579 A7 B7 五、發明説明（j 錄媒體）被提出。 此處釗述光透過層，隔著接著層配設樹脂製膜的情形 被提出，其他藉由旋塗（Spin coating )法配設能量線硬化 型或熱線硬化型的樹脂層的情形的提案也被進行。在這些 提案中，翹曲的發生或應力平衡崩潰的主要原因考慮爲由 於各層的應力緩和或樹脂層吸濕而膨脹吧。 但是，本發明者們發現前述光透過層的材質與前述支 持體的材質不同，再者光透過層的厚度爲2 0 //m以上的 情形在緊接著前述加速試驗後，發生大的翹曲量。 此在緊接著加速試驗後的大的翹曲量的變化是指在高 溫保存後（例如8 0 °C 1 2小時）或低溫保存後（0 °C 1 2小時）取出，在室溫環境中測定翹曲量的情形下，以 短時間急遽地變化，在這種短時間的急遽的翹曲的發生例 如在炎熱的夏日由外面急遽地將光記錄媒體拿到有冷氣的 房間時，或在嚴寒的冬天急遽地將光記錄媒體拿到溫暖的 房間時發生的可能性高，此情形暫時會發生無法將光記錄 媒體裝設於驅動器或者使用的問題點。 【發明槪要】 本發明乃鑒於上述問題點所進行的創作，其目的爲提 供抑制在短時間的急遽的溫度變化所發生的翹曲之光記錄 媒體。 本發明者其銳意硏究的結果發現在前述光透過層爲一 定的厚度的情形且線膨脹率與前述支持體不同的情形，在 本紙張尺度適用中國國家榡準（CNS ) A4規格（210X297公釐） 燊-- (請先閱讀背面之注意事項再填寫本頁) 、τ 經濟部智慧財產局員工消費合作社印製 -5 - 經濟部智慧財產局員工消費合作社印製 1241579 A7 _______B7 五、發明説明（j 胃溫高濕加速試驗的各層的應力平衡所造成的翹曲或聚碳 __或丙稀等的樹脂的吸濕所造成的膨脹爲原因的翹曲發 S之前’有因溫度變化所造成的在短時間的急遽的翹曲發 & ’發現藉由抑制此在短時間的急遽的翹曲發生，即使溫 度變化急遽的情形也能使用光記錄媒體。 即藉由如以下的發明可達成上述目的。 (1 )、一種光記錄媒體，覆蓋形成於支持基體的資 訊記錄面，至少配設有光透過層，其特徵爲： 因急遽的溫度變化造成的光記錄媒體的翹曲量的變化 量爲0 . 4度以內。 此處所謂的資訊記錄面也稱爲資訊記錄區域，顯示至 少在對支持基體上的濺鍍終了的時點的濺鍍區域部分。 而且，急遽的溫度變化是指以例子詳細說明在之後種 種的變化等，惟此處令1。(： / m i η以上的溫度變化爲急 遽的溫度變化。 (2 )、如（1 )的光記錄媒體，其中對前述急遽的 溫度變化的光記錄媒體的翹曲量的最大變化量爲0 · 2度 /分以下。 (3 )、如（1 )或（2 )的光記錄媒體，其中光透 過層的厚度爲2〇〜15〇//m。 (4 )、如（1 ) 、（ 2 )或（3 )的任一項之光記 錄媒體，其中由前述光透過層與前述支持基體的線膨脹率 不同的材質構成。 (5)、如（1)至（4)的任一項之光記錄媒體’ 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） I-----------批衣------1T------^ (請先閲讀背面之注意事項再填寫本頁) -6 - 1241579 A7 __ B7__ 五、發明説明（j 其中前述光透過層是由其線膨脹率比前述支持基體還大的 材質構成。 (6)、如（1)至（5)的任一項之光記錄媒體， 其中前述光透過層是由能量線硬化型樹脂或熱線硬化型樹 脂構成。 (7 )、如（1 )至（6 )的任一項之光記錄媒體， 其中前述支持基體是由聚碳酸酯或多烯烴構成。 (8 )、如（7 )的光記錄媒體，其中對前述光記錄 媒體的溫度變化的翹曲量的變化爲至少由3 0 °C以上的溫 度差的環境取出後，在6 0分鐘以內的翹曲量的變化量。 (9 )、如（8 )的光記錄媒體，其中在與前述支持 基體的至少前述光透過層相反側的面實施翹曲抑制手段。 (10) 、如（9 )的光記錄媒體，其中前述翹曲抑 制手段是由配設於與前述支持基體中的前述光透過層相反 側的面的翹曲抑制層構成，此翹曲抑制層是由線膨脹率與 厚度的積對前述光透過層的線膨脹率與厚度的積爲0 . 3 〜1 . 7倍的材料構成。 (11) 、如（9 )或（1 0 )的光記錄媒體，其中 令前述光透過層的材料與前述翹曲抑制層的材料同一。 (12) 、如（9 ) 、 （ 1 0 )或（1 1 )的任一項 之光記錄媒體，其中在前述翹曲抑制層與前述支持基體之 間形成防濕層。 . 而且，本發明者發現藉由採用抑制在短時間的急遽的 翹曲發生的設計思想，即使溫度變化急遽的情形也能使使 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） 裝 訂 線 (請先閲讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 1241579 A7 ___B7 五、發明説明（g 用光記錄媒體爲可能。 即採用如以下的設計方法。 (13) 、一種光記錄媒體的設計方法，其特徵爲： 覆蓋形成於支持基體的資訊記錄面，至少將具有厚度 2 ◦〜1 5 0 //m的光透過層的光記錄媒體保存於6 CTC 以上的環境中6 0分鐘以上後，在室溫環境取出於測定前 述光記錄媒體的翹曲量時，使其變化量爲目的値而設計光 記錄媒體。 (14) 、如（1 3 )的光記錄媒體的設計方法，其 中前述室內環境其溫度爲2 3± 2 °C，相對溫度爲5〇土 1 〇 ％ R Η。 (15) 、如（1 3 )或（1 4 )的光記錄媒體的設 計方法，其中前述變化量的目的値被設定爲〇 . 4度以內 〇 (16) 、如（1 3 ) 、 （ 1 4 )或（1 5 )的任一 項之光記錄媒體的設計方法，其中對前述急遽的溫度變化 的前述翹曲量的最大變化量爲0.2度/分以下。 (17) 、如（1 3 )至（1 6 )的任一項之光記錄 媒體的設計方法，其中前述翹曲量的變化量的測定在室溫 環境取出，由翹曲量的變化的測定開始到1 〇分鐘爲止爲 1分鐘間隔。 (18) 、如（1 3 )至（1 7 )的任一項之光記錄 媒體的設計方法，其中在與前述支持基體的至少前述資訊 記錄面相反側的面配置翹曲抑制層，使光記錄媒體的翹曲 本紙張尺度用中國國家標準（CNS ) Α4規格（210Χ297公釐) 一 (請先閲讀背面之注意事項再填寫本頁) -裝· 、11 經濟部智慧財產局員工消費合作社印製 -8- 1241579 A7 ______B71T -line -4-1241579 A7 B7 5. The invention description (j recording media) was proposed. Here, the case where a light transmitting layer is described, and a resin film is provided through the adhesive layer, and other proposals for the case where an energy ray hardening type or a heat ray hardening type resin layer is provided by a spin coating method are also proposed. Was carried out. In these proposals, the main cause of the occurrence of warpage or collapse of the stress balance is considered to be that the stress relaxation of each layer or the resin layer swells due to moisture absorption. However, the present inventors have found that the material of the light transmitting layer is different from the material of the support, and that the thickness of the light transmitting layer is 2 0 // m or more. After the acceleration test, large warpage occurs. the amount. The large change in the amount of warpage immediately after the accelerated test means that it is taken out after storage at high temperature (for example, 80 ° C for 12 hours) or after storage at low temperature (0 ° C for 12 hours). In the case of measuring the amount of warp, it changes abruptly in a short period of time. The occurrence of such a short period of abrupt warping, for example, when the optical recording medium is taken to the air-conditioned room from outside on a hot summer day, or It is highly likely to occur when the optical recording medium is hurriedly brought to a warm room in the severe cold winter. This situation may temporarily cause problems such as the inability to install or use the optical recording medium in a drive. [Summary of the Invention] The present invention has been made in view of the above-mentioned problems, and an object thereof is to provide a light recording medium that suppresses warping caused by rapid temperature changes in a short time. As a result of intensive research, the inventor found that in the case where the light transmitting layer is a certain thickness and the linear expansion rate is different from the foregoing support, the Chinese National Standard (CNS) A4 specification (210X297)厘) 燊-(Please read the precautions on the back before filling out this page), τ Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs-5-Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 1241579 A7 _______B7 V. Description of Invention (J Stomach temperature and humidity acceleration test The stress balance of each layer caused by warpage or swelling caused by moisture absorption of resins such as polycarbonate or acrylic resin. Caused by the rapid warpage in a short time & 'It was found that by suppressing this rapid warpage in a short time, an optical recording medium can be used even in the case of rapid temperature changes. That is, the following invention can be used. (1) An optical recording medium that covers an information recording surface formed on a supporting substrate and is provided with at least a light transmission layer, which is characterized by: The amount of change in the amount of warpage of the optical recording medium is within 0.4 degrees. The so-called information recording surface is also referred to as the information recording area, and shows at least the portion of the sputtering area at the time when the sputtering on the support substrate is completed. In addition, the rapid temperature change refers to the details of the subsequent changes, etc., but here, let the temperature change of 1. (: / mi η or more be a rapid temperature change. (2), such as (1) An optical recording medium in which the maximum change in the amount of warping of the aforementioned optical recording medium with rapid temperature changes is not more than 0.2 degrees per minute. (3) An optical recording medium such as (1) or (2), wherein The thickness of the light transmitting layer is 20 to 15 // m. (4) An optical recording medium such as any one of (1), (2) or (3), wherein the light transmitting layer and the supporting substrate are used. (5), such as the optical recording medium of any one of (1) to (4) 'This paper size applies the Chinese National Standard (CNS) A4 specification (210X297 mm) I-- --------- Batch of clothes ------ 1T ------ ^ (Please read the precautions on the back before filling this page) -6 -1241579 A7 __ B7__ 5. Description of the invention (j wherein the light transmitting layer is made of a material whose linear expansion ratio is larger than that of the supporting substrate. (6), such as any one of (1) to (5) A recording medium, wherein the light-transmitting layer is made of an energy-ray-curable resin or a heat-ray-curable resin. (7) An optical recording medium such as any one of (1) to (6), wherein the support substrate is made of a polymer (8) The optical recording medium such as (7), in which the change in the amount of warpage with respect to the temperature change of the optical recording medium is at least 30 ° C after taking out the environment The change in the amount of warp within 60 minutes. (9) The optical recording medium according to (8), wherein a warpage suppressing means is implemented on a surface opposite to at least the light transmitting layer of the support substrate. (10) The optical recording medium according to (9), wherein the warpage suppression means is composed of a warpage suppression layer disposed on a surface opposite to the light transmitting layer in the support substrate, and the warpage suppression layer is It is composed of a material whose product of linear expansion coefficient and thickness is 0.3 to 1.7 times the product of linear expansion coefficient and thickness of the light transmitting layer. (11) An optical recording medium such as (9) or (1 0), wherein the material of the light-transmitting layer and the material of the warpage suppressing layer are the same. (12) An optical recording medium such as any one of (9), (1 0), or (1 1), wherein a moisture-proof layer is formed between the aforementioned warpage suppressing layer and the aforementioned supporting substrate. In addition, the inventors have found that by adopting a design idea that suppresses the occurrence of sharp warping in a short time, the paper size can be adapted to the Chinese National Standard (CNS) A4 specification (210X297 mm) even in the case of rapid temperature changes. ) Gutter (please read the notes on the back before filling this page) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 1241579 A7 ___B7 5. Description of the invention (g Use of recording media is possible. That is, use the following design method. (13) A method for designing an optical recording medium, comprising: covering an information recording surface formed on a supporting substrate, and storing at least 6 optical recording media having a light transmitting layer having a thickness of 2 ◦ to 1 5 0 // m After 60 minutes or more in an environment above CTC, take out the room temperature environment to measure the warpage of the optical recording medium, and design the optical recording medium for the purpose of changing the amount. (14), such as (1 3) A method for designing an optical recording medium, wherein the temperature of the aforementioned indoor environment is 2 3 ± 2 ° C, and the relative temperature is 50 ± 10% R Η. (15), such as (1 3) or (1 4) light recording The design method of the volume, in which the purpose of the aforementioned change amount is set to within 0.4 degrees and the design of the optical recording medium such as (13), (1), (4) or (1). A method, wherein a maximum change amount of the warpage amount to the rapid temperature change is 0.2 degree / minute or less. (17) A method for designing an optical recording medium such as any one of (1 3) to (16) The measurement of the amount of change in the warpage is taken out at room temperature, and the interval from the measurement of the change in warp to 10 minutes is 1 minute. (18), such as (1 3) to (1 7) A method for designing an optical recording medium according to any one of the preceding claims, wherein a warpage suppressing layer is disposed on a surface opposite to at least the aforementioned information recording surface of the supporting substrate, so that the warpage of the optical recording medium is in accordance with Chinese National Standards (CNS) ) Α4 specification (210 × 297 mm) 1 (Please read the precautions on the back before filling out this page)-Equipment ·, 11 Printed by the Consumers' Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs-8- 1241579 A7 ______B7
五、發明説明（S 量在預定値內而設定。 (19)、如（1 8 )的光記錄媒體的設計方法，其 中前述翹曲抑制層爲樹脂層以及印刷層的至少一個，前述 印刷層爲包含顏料以及染料的一方的樹脂層。 【圖式之簡單說明】 圖1是模式地顯示與本發明的實施形態的例子有關的 光記錄媒體的層構成的略示剖面圖。 圖2是顯示用以測定與同實施形態的例子有關的光記 錄媒體的翹曲量的變化量的裝置的略示剖面圖。 圖3是顯示與同實施形態的第二例子有關的光記錄媒 體的圖1 一樣的略示剖面圖。 圖4是顯示與同實施形態的第二例子有關的翹曲抑制 層的圖案的槪略圖。 圖5是顯不本發明的實施例與比較例的光記錄媒體中 的放熱時的翹曲量變化量的線圖。 【符號說明】 1 〇、4 0 :光記錄媒體 1 2 :支持基體 1 6 :反射膜 18:第二電介質層 2 〇 :記錄層 22:第一電介質層 本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） (請先閲讀背面之注意事項再填寫本頁) •裝· 線 經濟部智慧財產局員工消費合作社印製 -9 - 1241579 A7 B7 經濟部智慧財產局員工消費合作社印製 五、發明説明（9 2 4 :光透過層 2 7 :防濕膜 2 8 :翹曲抑制層 3 0 :雷射光源 3 2 :半導體位置檢測器 3 4 :翹曲抑制圖案 【較佳實施例之詳細說明】 以下參照圖示詳細地說明本發明的實施形態。 如圖1所示，與本實施形態的例子有關的光記錄媒體 1 0在由聚碳酸酯構成的支持基體1 2上（在圖1中爲下 側），至少以反射膜1 6、第二電介質（Dielectric)層 18、記錄層20、第一電介質層22、光透過層24的 順序來形成。而且，在與支持基體1 2的光透過層2 4等 的相反側至少以防濕膜2 7以及翹曲抑制層2 8的順序來 形成。 前述支持基體1 2在此處是由聚碳酸酯樹脂的射出成 形形成，令其厚度約1 . 1 m m。在其上藉由濺鍍（ Sputtering)法以前述反射膜1 6、第二電介質層1 8、記 錄層2 0、第一電介質層2 2的順序來形成，前述光透過 層2 4是旋塗丙稀系樹脂而成，令其厚度約1 〇 〇 # m左 右。 此外，光透過層2 4爲丙稀系樹脂以外的環氧系樹脂 等也可以，形成方法也不限於旋塗法’採用各種塗佈方法 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·V. Description of the invention (The amount of S is set within a predetermined range. (19) A method for designing an optical recording medium such as (1 8), wherein the warpage suppressing layer is at least one of a resin layer and a printing layer, and the printing layer is It is a resin layer including a pigment and a dye. [Brief Description of the Drawings] FIG. 1 is a schematic cross-sectional view schematically showing a layer structure of an optical recording medium according to an example of an embodiment of the present invention. FIG. 2 is a diagram showing A schematic cross-sectional view of an apparatus for measuring a change amount of a warpage amount of an optical recording medium according to an example of the embodiment. Fig. 3 is the same as Fig. 1 showing an optical recording medium according to a second example of the embodiment. 4 is a schematic view showing a pattern of a warpage suppressing layer according to a second example of the embodiment. FIG. 5 is a view showing heat generation in an optical recording medium according to an example and a comparative example of the present invention. Line diagram of the amount of warpage change at the time. [Description of symbols] 1 0, 40: optical recording medium 12: support substrate 16: reflective film 18: second dielectric layer 2 0: recording layer 22: first dielectric Layer paper size Applicable to China National Standard (CNS) A4 specification (210X 297 mm) (Please read the precautions on the back before filling out this page) • Printed · Printed by the Intellectual Property Bureau of the Ministry of Economic Affairs, Consumer Cooperatives -9-1241579 A7 B7 Ministry of Economic Affairs Printed by the Intellectual Property Bureau's Consumer Cooperatives 5. Description of the invention (9 2 4: Light transmission layer 2 7: Moisture-proof film 2 8: Warpage suppression layer 3 0: Laser light source 3 2: Semiconductor position detector 3 4: Warp Curvature suppression pattern [Detailed description of the preferred embodiment] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. As shown in FIG. 1, the optical recording medium 10 related to the example of the embodiment is made of polycarbonate. The supporting substrate 12 (on the lower side in FIG. 1) is formed at least in the order of a reflective film 16, a second dielectric layer 18, a recording layer 20, a first dielectric layer 22, and a light transmitting layer 24. In addition, it is formed at least in the order of the moisture-proof film 27 and the warpage suppressing layer 28 on the opposite side to the light transmission layer 24, etc. of the support base 12. The aforementioned support base 12 is made of polycarbonate. Ester resin is formed by injection molding 1.1 mm. It was formed on the reflective film 16, the second dielectric layer 18, the recording layer 20, and the first dielectric layer 22 by the sputtering method, and the light transmitting layer was formed in this order. 24 is made by spin-coating an acrylic resin to have a thickness of about 100 # m. In addition, the light transmitting layer 24 may be an epoxy resin other than the acrylic resin, and the formation method is not limited. The spin coating method uses various coating methods. 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).
、1T 線 -10- 經濟部智慧財產局員工消費合作社印製 1241579 A7 B7 五、發明説明（- 或預先形成薄片狀進行接著等也可以。 因此，.在習知的C D或D V D等中與相當於此光記錄 媒體1 0的光透過層2 4的位置的樹脂層即反射膜上的保 護層的厚度（約5 // m )比較，前述光透過層2 4相當厚 地形成。 前述反射膜1. 6若滿足要求的反射率的話就不限定， 可適用種種的金屬材料等，惟此處以A g爲主成分，第一 以及第二電介質層2 2、1 8也可適用種種的材料，惟此 處使用一般的ZnS - S i〇2。而且，令記錄層2 0爲相 變化型的記錄層組成的G e S b T e系。 前述曲抑制層2 8以與光透過層2 4同一材料（丙 稀系樹脂）且大致相等的厚度形成，或藉由使用線膨脹率 不同的其他材料控制厚度，依照本發明的設計方法而適宜 地使用。例如可舉出比較光透過層的材料，形成線膨脹率 大的材料比光透過層還薄，或厚厚地形成線膨脹率小的材 料等的方法。而且，此處所配設的防濕膜2 7是由被濺鍍 的A 1層構成，令其厚度爲5 0 n m。 前述光透過層2 4如前述因與聚碳酸酯樹脂製的支持 基體1 2 —體由丙稀系樹脂形成，故當環境有急遽的溫度 變化且其變化大時，因各個單位時間中的線膨脹率的不同 等的理由而發生翹曲。 此光記錄媒體1〇因在前述支持基體12的與前述光 透過層2 4的相反側的表面（在圖1中頂面）’以大致相 等的厚度形成與光透過層2 4同樣的由丙稀系樹脂構成的 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） ---------1衣------1T------^ (請先閲讀背面之注意事項再填寫本頁) -11 - 1241579 A7 - --— B7__-_ -- 五、發明説明（j (請先閱讀背面之注意事項再填寫本頁) 翹曲抑制層2 8，故可藉由取得各層所具有的應力平衡抑 制根據因光透過層2 4的溫度變化造成的伸縮的光記錄媒 體10全體的翹曲量的變化量。 具體的翹曲量的變化量是使其由初期狀態在0 · 4度 以內的範圍。再者具體上以高溫保存試驗測定前述翹曲量 的變化量。此試驗在將光記錄媒體1 〇投入到6 0 °C以上 的環境6 0分鐘以上後，在室溫環境（氣溫2 1〜2 5 °C 、相對濕度4 0〜6 0 % )的環境中取出，如後述測定翹 曲量，測定由測定開始在最初的〇〜2 0分鐘間的因放熱 所造成的翹曲量的變化量，由其結果令前述變化量爲 0 · 4度以內而管理。例如令前述變化量爲〇 · 4度以內 而調整、設計翹曲抑制層2 8的厚度。 更佳爲爲了抑制急遽的翹曲，令前述翹曲量的變化量 爲0 · 2度/分。 前述防濕膜2 7是防濕支持基體1 2抑制伸長，由高 溫保存環境取出，抑制溫度下降某程度後的聚碳酸酯樹脂 製支持基體1 2的吸濕。 經濟部智慧財產局員工消費合作社印製 此處前述翹曲量的變化量的測定例如如圖1 2所示， 由雷射光源3 0對記錄媒體1 0照射雷射束，利用半導體 位置檢測器（以下P S D )接收那時的反射光，由反射雷 射束的對該P S D 3 2的入射位置，檢測光記錄媒體1 0 的翹曲量。 更詳細爲如在圖2中以虛線表示，設定在光記錄媒體1T line -10- Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 1241579 A7 B7 V. Description of the invention (-or pre-formed flakes can be attached and so on. Therefore, it is equivalent to the conventional CD or DVD, etc. In comparison with the thickness (about 5 // m) of the resin layer at the position of the light transmission layer 24 of the optical recording medium 10, that is, the protective layer on the reflection film, the light transmission layer 24 is formed relatively thick. 6 If it meets the required reflectance, it is not limited. Various metal materials can be applied. However, A g is the main component here. The first and second dielectric layers 2 2 and 18 can also be used for various materials. Here, a general ZnS-Sio2 is used. In addition, the recording layer 20 is a GeSbTe system composed of a phase-change recording layer. The curvature suppression layer 28 is the same as the light transmission layer 24. The material (acrylic resin) is formed with substantially equal thickness, or the thickness is controlled by using other materials having different linear expansion ratios, and is suitably used in accordance with the design method of the present invention. For example, a material that compares a light transmitting layer may be used. Form a material ratio with a large linear expansion ratio A method in which the light-transmitting layer is thin, or a material having a small linear expansion coefficient is formed thickly. In addition, the moisture-proof film 27 provided here is composed of a layer A 1 sputtered to a thickness of 50 nm The light transmitting layer 24 is formed of an acrylic resin with a support substrate 1 2 made of a polycarbonate resin as described above. Therefore, when the environment has a rapid temperature change and the change is large, it is caused by Warping occurs due to differences in the linear expansion ratio. This optical recording medium 10 is substantially equal to the surface (top surface in FIG. 1) of the support substrate 12 on the side opposite to the light transmitting layer 24. The thickness of this paper is the same as that of the light transmitting layer 24. This paper is made of acrylic resin and the size of this paper is applicable to China National Standard (CNS) A4 (210X297 mm) --------- 1 clothing ---- --1T ------ ^ (Please read the notes on the back before filling this page) -11-1241579 A7---- B7 __-_-V. Description of the invention (j (Please read the notes on the back first Please fill in this page again.) The warpage suppression layer 2 8 can suppress the stress balance of each layer. The amount of change in the amount of warping of the entire stretchable optical recording medium 10 due to a change in temperature. The specific amount of change in the amount of warp is such that the initial state is within a range of 0.4 degrees. Furthermore, specifically, a high-temperature storage test The amount of change in the amount of warpage was measured. After the optical recording medium 10 was put into an environment of 60 ° C or higher for 60 minutes or more, the test was performed at room temperature (air temperature 2 1 to 2 5 ° C, relative humidity 4). 0 ~ 60%), measure the amount of warpage as described later, and measure the amount of change in the amount of warpage due to heat generation during the first 0 to 20 minutes from the start of the measurement. The amount is managed within 0 · 4 degrees. For example, the thickness of the warpage suppressing layer 28 is adjusted and designed so that the amount of change is within 0.4 degrees. More preferably, in order to suppress sharp warping, the change amount of the warpage amount is set to 0.2 degrees / minute. The moisture-proof film 27 is a moisture-proof support substrate 12 that suppresses elongation and is taken out from a high-temperature storage environment to suppress the moisture absorption of the polycarbonate resin support substrate 12 after the temperature drops to some extent. Printed here by the Consumers' Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs, for example, as shown in Fig. 12, the laser light source 30 irradiates the recording medium 10 with a laser beam, and a semiconductor position detector is used. (The following PSD) receives the reflected light at that time, and detects the amount of warpage of the optical recording medium 10 from the incident position of the reflected laser beam on the PSD 32. In more detail, it is set as an optical recording medium as indicated by a dotted line in FIG. 2.
1 0無翹曲的直平面狀態時，使反射雷射束入射到P S D 本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） •12- A7 1241579 B7________ 五、發明説明（如 3 2的中央，在光記錄媒體1 0產生翹曲/3時，反射雷射 束的反射角僅增加2 X yS，此成爲對P S D 3 2的反射雷 射束的入射位置的偏移而被檢測出。令對前述預先設定的 基準的偏移量爲翹曲量的變化量。 在此實施形態的例子中，如前述因在支持基體1 2的 與前述光透過層2 4的相反側形成與此光透過層2 4同一 材料且同一厚度的翹曲抑制層2 8，故藉由因溫度變化造 成的這些層的伸縮可在支持基體1 2的兩側相抵，保持應 力平衡，可管理翹曲於最佳。 此外，在上述實施形態的例子中，翹曲抑制層2 8雖 然配設成與光透過層2 4同一材料且同一厚度，惟本發明 並未限定於此，若爲對一定時間內的溫度變化的翹曲量的 變化量爲0 . 4度以內的範圍內的話佳，因此，翹曲抑制 層2 8的材料以及厚度並非限定於上述實施形態的例子。 例如翹曲抑制層2 8的材料由環氧系樹脂、尿烷系樹脂等 選擇也可以。 而且’翹曲抑制層2 8的厚度調整範圍例如即使與光 透過層2 4同一材料且其厚度爲光透過層2 4的3 0〜 5 0%左右，因該光透過層2 4的翹曲的3〜5成被相抵 ’故令剩餘的翹曲量的變化量爲上述範圍內的話佳。而且 相反地’令翹曲抑制層2 8的厚度爲光透過層2 4的 1 _ 7〜1 · 5倍左右也可以。 再者’在上述實施形態的例子中雖然光透過層2 4是 由丙稀系樹脂形成，但是本發明一般適用於使用在短時間 本紙張尺度適用中國國家標準（CNS ) A4規格（210X：297公釐） " 訂 線 (請先閱讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 -13- 經濟部智慧財產局員工消費合作社印製 1241579 A7 B7 五、發明説明（h 的急遽的溫度變化所造成的伸縮激烈的材料的情形，可由 藉由紫外線等的能量線硬化的能量線硬化型樹脂或藉由熱 硬化的熱線硬化型樹脂之中選擇種種，可適用丙稀系樹脂 、環氧系樹脂、尿烷系樹脂等。 再者而且，前述翹曲抑制層2 8雖然被作成與光透過 層2 4同一材料，惟此翹曲抑制層2 8因被要求光透過性 ’故不透明或半透明的其他材料也可以。此處，雖然令前 述光透過層2 4的厚度爲1 0 0 //m，惟本發明也適用於 配設有厚度2 〇〜1 5 0 //m的光透過層的光記錄媒體。 前述最小値的2 0 // m乃因在此値以下的厚度的情形 ’因溫度變化造成的伸縮少，無須配設翹曲抑制手段。而 且’最大値1 5 0 // m是由資訊的記錄/再生時的光學式 頭的物鏡（Objective lens )與前述記錄層2 0的距離以及 此物鏡與光記錄媒體1 〇之間的容許的最小的間隙距離的 關係決定。 而且’對於支持基體1 2的吸濕少的情形或因吸濕造 成的翹曲量變化量少的情形，如圖3所示的本發明的實施 形態的第二例的光記錄媒體4 0，不配設前述吸濕膜2 7 也可以。 再者，在上述實施形態的例子中翹曲抑制層2 8雖然 在支持基體1 2的與光透過層2 4相反側的面以均勻的厚 度形成，惟本發明並未限定於此，其他的翹曲控制手段也 可以。因此，例如如圖4所示在放射方向長且在圓周方向 以等角度間隔，藉由與前述翹曲抑制層2 8同樣的材料形 本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） 裝------訂------線 (請先閱讀背面之注意事項再填寫本頁) -14- A7 1241579 一 ___ B7 五、發明説明（ 成翹曲抑制圖案3 4也可以。 此外，前述支持基體1 2的材料除了如實施形態的例 子的聚碳酸酯外，使用多烯烴（Ρ ο I y ο I ef i η )等也可以。 而且，翹曲抑制層的形成方法也未特別限定，可適用 旋塗法、浪塗法、網版印刷法等的種種方法，對於使用網 版印刷法進行的印刷層也有翹曲抑制的功效。 再者而且，前述記錄層不限定於實施形態的例子，爲 記錄及/或可再生而構成的單一或複數層的話佳，作爲光 記錄媒體在記錄層上具有光透過層的話佳。 因此，反射膜、電介質層的有無或這些與記錄層、光 透過層、支持基體的疊層的順序等不限定於實施形態的例 子。 (實施例） 在圖5前述圖1 、圖3所示的實施形態的例子中的同 樣的光記錄媒體，與其他的比較例一起在8 0 °C.、1 2小 時的老化（A g i n g )之後，在2 0〜2 2 t：且溼度 5 0〜6 0 %的環境，以和前述圖2所示的同樣的測定方 法測定翹曲量的變化量，以其變化量爲縱軸；測定開始後 的時間爲橫軸來表示。此外，此處令剛由高溫環境下取出 後的翹曲量爲〇，比較由該處開始的差。 圖5的符號A爲由圖1的光記錄媒體去除翹曲抑制層 與防濕層的比較例；B爲由圖1的實施形態的例子的光記 錄媒體去除翹曲抑制層的比較例；C爲與圖1的實施形態 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） 裝 訂 線 (請先閱讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 -15- 經濟部智慧財產局員工消費合作社印製 1241579 A7 B7 五、發明説明（1)3 的例子的光記錄媒體同樣的實施例；D爲與圖3的光記錄 媒體同樣的實施例；E爲由圖1的光記錄媒體去除防濕層 ，此處翹曲抑制層爲在直徑1 2 0 m m的光記錄媒體的直 徑4 4〜1 1 8 m m的圓圈狀區域的約9 0 %左右的區域 ，藉由一般的顏料系的墨水進行印刷的實施例的測定値。 由圖5得知由測定開始在1 0分鐘以內，因放熱而發 生光透過層的收縮，據此，得知翹曲急遽且大大地發生。 而且，得知配設有翹曲抑制層的C、D以及E的情形，因 溫度變化造成的翹曲量的變化量比A以及B少。 再者，若放熱遍及全體的話，在圖5中於3 0分鐘〜 1 0 0分鐘之間，如A、B、C、D可看到的，因熱放散 造成的應變急速地被解除，其次，在1 0 0分鐘到 1 0 0 0分鐘之間在A、D、E的情形，因構成支持基體 的聚碳酸酯的吸濕使翹曲量的變化量變大。 此時，得知配設有防濕層的B與C的情形因聚碳酸酯 的吸濕造成的翹曲量的變化量幾乎不發生。 【產業上的可利用性】 本發明因如上述而構成，故在配設有支持基體以及較 厚的光透過層的光記錄媒體中，具有即使急遽的溫度變化 發生，也能抑制根據因該溫度變化造成光透過層的伸縮的 應力平衡的崩壞所產生的翹曲量的變化量於一定値內的優 良的功效。 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） " ~ " -----------批衣------1T------^ (請先閲讀背面之注意事項再填寫本頁) -16-10 In the case of a straight plane without warpage, the reflected laser beam is made incident on the PSD. The paper size applies the Chinese National Standard (CNS) A4 specification (210X 297 mm) • 12- A7 1241579 B7________ 5. Description of the invention (eg 3 In the center of 2, when the optical recording medium 10 is warped / 3, the reflection angle of the reflected laser beam is only increased by 2 X yS, which is detected as a deviation from the incident position of the reflected laser beam of PSD 3 2 In the example of this embodiment, as described above, the support substrate 12 is formed on the opposite side of the light transmitting layer 24 from the support substrate 12 as described above. This light transmission layer 2 4 is the same material and the same thickness of the warpage suppression layer 2 8, so the expansion and contraction of these layers due to temperature changes can be offset on both sides of the support substrate 12, maintaining stress balance, and managing warpage In addition, in the example of the above embodiment, although the warpage suppressing layer 28 is provided with the same material and the same thickness as the light transmitting layer 24, the present invention is not limited to this. Variation of the amount of warpage within the temperature change It is preferable that the amount is within a range of 0.4 degrees. Therefore, the material and thickness of the warpage suppression layer 28 are not limited to the examples of the above embodiment. For example, the material of the warpage suppression layer 28 is an epoxy resin, It is also possible to select a urethane-based resin, etc. Moreover, the thickness adjustment range of the "warpage suppression layer 28" is, for example, about 30 to 50% of the same thickness as that of the light transmission layer 24, because 30% to 50% of the warpage of the light transmission layer 24 is offset. Therefore, it is better to make the change amount of the remaining warpage amount within the above range. On the contrary, the thickness of the warpage suppression layer 2 8 is to transmit light. The layer 2 4 may be approximately 1 -7 to 1.5 times. Furthermore, in the example of the above embodiment, although the light transmitting layer 24 is made of an acrylic resin, the present invention is generally applicable to use in a short time. This paper size applies to China National Standard (CNS) A4 specification (210X: 297 mm) " Thread setting (please read the notes on the back before filling this page) Printed by the Intellectual Property Bureau Staff Consumer Cooperatives of the Ministry of Economy-13- Economy Ministry of Intellectual Property Bureau Employee Consumer Cooperatives 1241579 A7 B7 V. Description of the invention (In the case of a material that undergoes severe expansion and contraction caused by a sudden temperature change of h, the energy-ray-curable resin hardened by energy rays such as ultraviolet rays or the heat-curable resin cured by heat-curing Various types are selected, and acrylic resins, epoxy resins, urethane resins, etc. can be applied. In addition, although the warpage suppression layer 28 is made of the same material as the light transmission layer 24, the warpage suppression is suppressed. Layers 2 and 8 may also be opaque or translucent because they are required to have light transmittance. Here, although the thickness of the light-transmitting layer 2 4 is set to 1 0 0 // m, the present invention is also applicable to deployment An optical recording medium having a light transmitting layer having a thickness of 2 0 to 15 0 // m. The aforementioned minimum 値 of 2 0 // m is due to the thickness below this. ′ There is less expansion and contraction due to temperature changes, and it is not necessary to provide a warping suppression means. In addition, 'maximum 値 1 5 0 // m is the allowable distance between the objective lens of the optical head and the recording layer 2 0 during the recording / reproduction of information, and the allowable distance between the objective lens and the optical recording medium 1 〇 The relationship between the minimum gap distance is determined. Furthermore, for a case where there is little moisture absorption of the supporting substrate 12 or a case where there is little variation in the amount of warpage due to moisture absorption, as shown in FIG. 3, the optical recording medium 40 of the second example of the embodiment of the present invention, The aforementioned moisture-absorbing film 2 7 may not be provided. Furthermore, in the example of the above embodiment, although the warpage suppressing layer 2 8 is formed with a uniform thickness on the surface of the support base 12 opposite to the light transmitting layer 24, the present invention is not limited to this. Others Warping control means are also possible. Therefore, for example, as shown in FIG. 4, it is long in the radial direction and at equal angular intervals in the circumferential direction. With the same material shape as the aforementioned warpage suppressing layer 28, the paper size applies the Chinese National Standard (CNS) A4 specification (210X 297). (Mm) Install ------ order ------ line (please read the precautions on the back before filling in this page) -14- A7 1241579 A ___ B7 V. Description of the invention 3 4 may also be used. In addition to the above-mentioned support base 12, the polyalkylene (P ο I y ο I ef i η) may be used in addition to the polycarbonate as an example of the embodiment. In addition, the warp suppression layer The formation method is not particularly limited, and various methods such as a spin coating method, a wave coating method, and a screen printing method can be applied, and it also has a function of suppressing warpage of a printed layer using the screen printing method. Furthermore, the aforementioned record The layer is not limited to the example of the embodiment, and it is preferable to use a single or plural layer for recording and / or reproduction, and it is preferable to have a light transmitting layer on the recording layer as an optical recording medium. Therefore, the presence or absence of a reflective film or a dielectric layer Or these and the recording layer, The order of lamination of the transmission layer and the support substrate is not limited to the example of the embodiment. (Example) The same optical recording medium as the example of the embodiment shown in FIG. 5 and FIG. 1 and FIG. The comparative examples were aged at 80 ° C. For 12 hours, and then in an environment of 20 to 2 2 t: and humidity of 50 to 60%, in the same manner as shown in FIG. 2 described above. The measuring method measures the amount of change in the amount of warpage, and uses the amount of change as the vertical axis; the time after the start of the measurement is represented by the horizontal axis. In addition, the amount of warpage immediately after taking out from a high-temperature environment is 0, which is compared by The difference at this point is shown in Fig. 5. The symbol A in Fig. 5 is a comparative example in which the warping suppression layer and the moisture-proof layer are removed by the optical recording medium in Fig. 1; and B is the warping suppression in the optical recording medium in the example of the embodiment shown in Fig. 1. Comparative example of the layer; C is the implementation form shown in Figure 1. The paper size applies the Chinese National Standard (CNS) A4 specification (210X297 mm) gutter (please read the precautions on the back before filling this page). Intellectual Property Bureau of the Ministry of Economic Affairs Printed by Employee Consumer Cooperatives -15-Intellectual Property Bureau, Ministry of Economic Affairs Printed by the employee consumer cooperative 1241579 A7 B7 V. Invention description (1) 3 The same embodiment of the optical recording medium; D is the same embodiment as the optical recording medium of FIG. 3; E is the optical recording medium of FIG. 1 The anti-moisture layer is removed. Here, the warpage suppression layer is an area of about 90% of a circular area of a diameter of 4 to 118 mm in an optical recording medium with a diameter of 120 mm. Measurement of the Example of Printing with Ink 墨水. From FIG. 5, it is found that the light transmission layer shrinks due to heat generation within 10 minutes from the start of the measurement. Based on this, it is found that the warpage occurs sharply and greatly. In addition, it was found that in the cases where C, D and E were provided with the warpage suppressing layer, the amount of change in the warpage amount due to temperature change was smaller than that in A and B. In addition, if the heat is radiated throughout the whole, as shown in Figure 5, between 30 minutes and 100 minutes, as can be seen from A, B, C, and D, the strain caused by the heat radiation is quickly released, and then In the case of A, D, and E between 100 minutes and 100 minutes, the amount of change in the amount of warpage is increased due to the moisture absorption of the polycarbonate constituting the supporting substrate. At this time, it was found that in the case of B and C provided with a moisture-proof layer, the amount of change in the amount of warpage due to moisture absorption of the polycarbonate hardly occurred. [Industrial Applicability] Since the present invention is configured as described above, the optical recording medium provided with a supporting substrate and a thick light transmitting layer has the ability to suppress the occurrence of a sudden temperature change even if a rapid temperature change occurs. The effect that the change in the amount of warpage caused by the collapse of the stress balance caused by the expansion and contraction of the light transmitting layer due to temperature changes is within a certain range. This paper size applies to China National Standard (CNS) A4 specification (210X297 mm) " ~ " ----------- batch ------ 1T ------ ^ ( (Please read the notes on the back before filling out this page) -16-