472252 A7 B7 五、發明說明（1 ) 〔發明領域〕 (請先閱讀背面之注意事項再填寫本頁) 本發明關於光資訊記錄媒體，尤其關於使用銀反射膜 的可記錄光碟（C D - R )、數位視訊可記錄光碟（ D V D - R )等。 〔相關技藝說明〕 以往，在C D - R等光資訊記錄媒體上使用金反射膜 作爲金屬材料，爲響應儲存媒體廉價要求，使用以銀爲主 要成份的金屬膜。但是，由於以銀爲主要成份，穩定性差 ，特別當光照射時，急劇發生銀的氧化還原反應，存在金 屬膜被腐蝕發生大缺陷問題。 說明槪要 · 本發明就是鑒於上述背景技術所存在的問題而提出來 的，本發明的目的在於提供能抑制上述金屬膜腐蝕的光資 訊記錄媒體。 經濟部智慧財產局員工消費合作社印製 本發明提供一種光資訊記錄媒體，在透光性基板上直 接或通過底層設有儲存層及金屬層；其特徵爲，在上述金 屬層附近使存在藉由光照射而被氧化或還原，而在上述金 屬層和儲存層的界面上產生鹽之具有電子接受性或電子提 供性的材料。 本發明的光資訊記錄媒體，可以使上述具有電子接受 性或電子提供性的材料存在於上述儲存層或設於儲存層和 金屬層之間的中間層。 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） * 4 - A7 B7 五、發明說明（2 ) 本發明的光資訊記錄媒體，所述金屬層可以以銀爲主 要成份。 (請先閲讀背面之注咅？事項再填寫本頁) 本發明的光資訊記錄媒體，所述鹽可以是中性鹽、酸 性鹽、鹼性鹽或氧化物層。 本發明的光資訊記錄媒體，所述鹽的粒徑爲1 〇 # m 以下。 下面進一步說明本發明。 如上所述，本發明關於一光資訊記錄媒體，在透光性 基板上直接或通過底層設有儲存層及金屬層，在上述金屬 層附近存在具有電子接受性或電子提供性的材料，上述電 子是指通過照射被氧化或還原，在上述金屬層和儲存層的 分界面上產生鹽的電子。根據這種結構，由於金屬膜附近 存在具有電子接受性或電子提供性的材料，所以，當因光 照射發生氧化或還原反應，在金屬膜和儲存層的交界面上 產生鹽，由於上述鹽的存在，金屬膜的腐蝕受到抑制，能 減少比1 Ο μ m大的大缺陷（銀的腐蝕不斷進行，達到例 如形成氯化銀等廣泛範圍，反射率低下部分）。 經濟部智慧財產局員工消費合作社印製 上述具有電子接受性或電子提供性的材料存在於上述 儲存層或設於該儲存層的金屬層之間的中間層，鹽的形成 能良好地進行。在上述金屬膜中使用銀的光資訊記錄媒體 具有良好的適應性。生成的鹽爲中性鹽、酸性鹽、鹼性鹽 或氧化物鹽，可以抑制腐蝕’減少比1 〇 # m大的大缺陷 。上述鹽的粒徑爲1 0 A m以下’可以抑制腐蝕’減少比 1 0 //m大的大缺陷。 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） -5 - 472252 A7 B7 經濟部智慧財產局員工消費合作社印製 五、發明說明（3 ) 圖式之簡要說明 第1圖爲第一實施例的光資訊記錄層的主要部分放大 剖面圖。 第2圖爲第1圖所示光資訊記錄媒體的立體圖。 第3圖爲第二實施例的光資訊記錄媒體的主要部分放 大剖面圖。 第4圖爲第三實施例的光資訊記錄媒體的主要部分放 大剖面圖。 第5圖爲第四實施例的光資訊記錄媒體的立體圖。 第6圖爲製造光碟流程圖。 第7圖爲形成儲存層和保護層的流程圖。 圖號說明 1 透明基板 2 預格式圖形 3 資訊儲存部 4 反射層 5 保護層 6 底層 7 中間層 8 印刷層 較佳實施例說明 本紙張尺度適用中國國家標準（CNS)A4規袼（210 X 297公釐） -------------、.‘-----：----訂-------.--線 (請先閱讀背面之注意事項再填寫本頁) -6 - 472252 經濟部智慧財產局員工消費合作社印製 A7 B7 五、發明說明（4 ) 以下通過實施例詳細說明本發明，在各實施例中，先 說明實施形態，再舉更具體的實驗例。 第一實施例 參照第一圖和第二圖說明第一實施例的光資訊記錄媒 體。由上述兩圖可知，本實施例的光資訊記錄媒體由透明 基板1、資訊儲存部3、金屬層4、保護層5及薄層8構 成，其中，透明基板1的單面上形成微細凹凸狀的預格式 圖形2，通過對預格式圖形2內進行充塡形成資訊儲存部 3，金屬層4包覆在資訊儲存部3上，保護層5塗覆於金 屬層4上，保護層5上層壓薄層8。 可以使用任意公知透明基板作爲上述透明基板1，例 如聚碳酸酯、聚甲烯酸甲酯、聚甲戊烯、環氧等透明樹脂 材料成形爲所希望形狀，在其單面上轉印所希望的預格式 圖形，或將轉印有所希望的預格式圖形的透明樹脂層密接 在形成所希望形狀的玻璃等透明陶瓷板的單面上等。如第 2圖所示，構成碟片狀光資訊記錄媒體（以下簡記爲光碟 )的透明基板1形成中心部設有中心孔1 a的圓盤狀。透 明基板1的制作方法因不是本發明要旨，省略說明。 預格式圖形2至少包含光速導向部，該光速導向部用 於使儲存·讀取用雷射光束追隨儲存磁道。在第1圖和第 2圖的例中，光束導向部以形成爲與中心孔1 a同心的渦 卷狀或同心圓狀的導向槽2 a構成，沿該導向槽2 a形成 地址槽或時間槽等預置槽2 b。預置槽2 b重疊在導向槽 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） ------------- -----:----訂---------線 (請先閱讀背面之注意事項再填寫本頁) -7- 472252 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 ) 2 a上形成場合，爲了能對兩者進行光學識別，如第1圖 所示，導向槽2 a與預置槽2 b分別形成不同深度。預置 槽2 b形成於相鄰接的導向槽2 a之間場合，兩者也可以 形成相同深度。也可以沿儲存磁道使槽小擺動代替導向槽 作爲光束導向部。另外，也可以不形成預置槽2 b，僅形 成導向槽。 資訊儲存部3以具有酸根或鹼性質的材料形成，以與 金屬膜的氧化還原反應相對應。同時通過將熱型儲存材料 充塡在上述預格式圖形2內形成，上述熱型儲存材料至少 包含吸收光能變換成熱能的材料或這種離子性的色素材料 一部分。 作爲可形成資訊儲存部3的色素材料可以列舉如聚甲 炔系染料、蒽醌系染料、菁系染料、酞菁系染料、'咕噸系 染料、薔薇系染料、吡喃鎗系染料、甘菊環系染料、含金 屬偶氮系染料、偶氮系染料等。在上述材料中，特別適合 使用二碳菁衍生物、酞菁衍生物、萘菁衍生物、菁衍生物 、偶氮衍生物。另外，可以使用添加胺鑰系染料等各種消 光劑的染料。可以從上述色素材料組中選擇一種或二種以 上的色素材料分散到樹脂中，將這樣形成的材料作爲資訊 儲存部3的形成材料。作爲可使色素材料分散的樹脂材料 可以列舉例如丙烯酸樹脂、乙烯樹脂、酚樹脂、氟樹脂、 矽樹脂、聚醯胺樹脂、纖維素樹脂等。 資訊儲存部3是通過將上述列舉的色素材料中選擇的 色素材料的溶劑溶液旋轉塗覆形成在透明基板1的預格式 本紙張尺度適用中國國家標準規格（210χ297公釐)-—- -----------览，--------ΐτ-----—0 (請先閱讀背面之注意事項再填寫本頁) -8 - 經濟部智慧財產局員工消費合作社印製 472252 A7 ______B7 五、發明説明4 ) 圖形形成面上。當色素材料充塡到槽狀預格式圖形2內後 ’有選擇地除去附著在預格式圖形2之間的槽間表面2 c 的色素材料，暴露透明基板1的表面，僅在預格式圖形2 內充塡色素材料形成。作爲色素材料的溶劑可以使用酒精 系溶劑或溶纖劑系溶劑等。 含有以下所列舉的能取二嚙配位體的螯合材料也能實 現本發明目的。作爲上述螯合材料可以列舉如無機酸類、 二元竣酸類、羥基碳酸類、二羥基化合物、羥基肟類、羥 基醛及衍生物類、雙酮類及類似化合物、羥基醌類、環庚 二烯酚酮類、N -氧撐化合物、氨基酸類及類似化合物、 羥胺類、8 -羥基喹啉、醛亞胺類、羥基偶氮化合物、亞 硝基萘酚類、三氮烯類、縮二脲類、甲腊類及雙硫腙類、 雙胍類、乙二肟、二元胺類及類似化合物、胼衍生物、硫 醚類。也可以使用具有亞胺基、醯胺基的衍生物。 用於金屬層4的金屬沒有作特別限定，可以使用鋁、 銀、銅等金屬材料或以它們爲主要成份的合金材料。以銀 爲主要成份的金屬或合金特別合適。所謂以銀爲主要成份 是指銀原子的含有率8 0〜1 00%，最好9 0〜1 〇〇 %。另外，在這些反射層材料之中，由於廉價廣泛用於小 型磁碟，也可以使用鋁。當使用金屬材料或合金材料作爲 金屬層材料場合，可以使用噴濺法或真空蒸鍍等真空成膜 方法形成金屬層4。這時也可以適用以下技術：改變真空 槽內真空度（例如1 0 — 5 T 〇 r r左右），進行噴濺，形 成密度或結晶狀態不同的膜，提高金屬反射膜的反射率。 本紙張尺度適用中國國家標準（CNS ) A4規格（210X2.97公釐) 一 ~~~ ~ -9- -----------------ΐτ--------0 (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 472252 A7 _ B7 五、發明說明（7 ) 保護層5可以使用例如S i 〇、S i n、a丨η等無 機材料或光硬化性樹脂等有機材料形成。無機保護層可通 過真空成膜方法形成，有機保護層可通過將光硬化性樹脂 膜（例如大日本墨水化學工業株式會社製的S D 1 7 0 〇 、SD318、 SD301)旋轉塗覆在金屬層4上後照 射樹脂硬化光後形成。 薄層8包含紫外線硬化樹脂，通過絲網印刷塗布後， 使塗膜硬化。 將光照射在上述製作的光資訊記錄媒體場合.，發生金 屬膜的氧化還原反應。與用於輔助電子流動配置在附近的 具有電子接受性、提供性的材料反應，形成顯微鏡可觀察 到的粒徑1 0 /z m以下的鹽。關於鹽的粒徑，越小對電氣 ί曰號影響越小，所以，較好的是5 # m以下，最好2 y m 左右。作爲鹽可以列舉中性鹽、酸性鹽、鹼性鹽、氧化物 鹽。鹽的粒徑1 0 /z m以下場合，可以想辦法補救，不會 成爲問題，鹽的粒徑超過1 〇 // m場合，有時無法補救， 會成爲問題。有時鹽的粒徑雖爲1 〇 # m以下，但互相連 續會成爲1 0 // m以上大缺陷。這種反應與例如水附著等 場合可見的反射膜的急劇腐蝕不同，進展緩慢。 關於鹽的粒徑變大而不可見，可以認爲該反應是基於 單分子反應的反應系，不是連鎖反應。若溶劑殘存在資訊 儲存部3 ’這種現象將促進上述氧化還原反應，成爲大缺 陷。在此，形成資訊儲存部3後，爲了在金屬層成膜、保 護膜成膜、薄膜成膜中任一工序後的工序中進行溶劑乾燥 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） ϋ ϋ ϋ I I n n ϋ n n n I u - n 1 n ϋ 一-OJ n I I ϋ n I (請先閲讀背面之注咅2事項再填寫本頁) -10- 472252 經濟部智慧財產局員工消費合作社印製 A7 :.. . ___ _ B7 一 1 钟i :二、-:. "*** ^*~· ---—-- 五 '發：明説明:(8: " h ，需要在3 0 °C以上溫度下經1 〇秒以上烘烤。 下面是本實施例的更具體的實驗例，本發明的效果更 爲淸楚。 將假吲哚-苯並假吲哚菁染料（計數離子c I 0 4 -及 B F 4 )的溶液旋轉鍍覆在第1圖和第2圖所示的設有預 格式圖形的聚碳酸酯基板上，形成資訊儲存部3。通過噴 濺法在該資訊儲存部3上形成1 〇 〇 μ m的A g膜作爲金 屬膜。在金屬層上塗布大日本墨水化學工業株式會社製的 S D 3 1 8 ’通過紫外線硬化，形成厚度爲5 // m的保護 層。接著，層壓十條化工株式會社製的雷克爾油墨（音譯 )° 用5萬流明（L u X )(氙燈）、3 0 c m距離照射 2 0 0小時（4 0 t、5 0 % )，以顯微鏡能確認使用上 無問題的微細鹽。由於形成該鹽粒，1 〇 V m以上的大缺 陷能降低到5 3計數/秒以下。鹽爲氯化銀、硫化銀及元 素號1 0以下的材料所形成的鹽。 第二實施例 參照第3圖說明第二實施例的光資訊記錄媒體。由該 圖可知’本實施例的光資訊記錄媒體是在透明基板1的預 格式圖形形成面上形成底層6，將色素材料充塡到形成在 底層6表面的預格式圖形2對應的溝槽內，形成資訊儲存 部3。 底層6是爲了改善透明基板1和資訊儲存部3的密接 本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） ；----------¾------T------i (請先閱讀背面之注意事項再填寫本頁) -11 - 472252 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 ) 性、改善儲存感光度、保護資訊儲存部3等目的而設置的 ，例如由聚乙烯醇、聚氧化乙烯、聚丙烯酸、磺酸鈉聚苯 乙烯、聚乙烯吡咯烷酮、聚甲基丙烯酸、聚丙撐二醇、纖 維素甲醚、聚乙烯硝酸鹽、硝酸纖維素等親水性樹脂形成 。可以通過將親水性樹脂的水溶液旋轉鍍覆在透明基板1 的預格式圖形形成面2上形成底層6。 由於底層6由親水性樹脂形成’耐水性（耐濕性、透 濕性）及耐熱性差。因此’最好對底層6施以架橋處理或 結晶化處理以改善耐水性及耐熱性。具體地說，將架橋劑 加到親水性樹脂水溶液中使底層6成膜後，通過光照射或 加熱使得架橋反應發生，或者對沒有添加架橋劑的底層6 施以熱處理使其結晶，例如，使用聚乙烯醇（P V A )作 爲親水性樹脂場合，使得P V A成爲改性P V A。 比較架橋處理和結晶化處理，由於沒有因加熱對透明 基板帶來不利影響，且作業性好，架橋處理比結晶化處理 好。下面是架橋反應具體例。實施時，可以根據需要從這 些架橋反應進行選擇採用。 (1 )添加重鉻酸銨作爲架橋劑，處理色素表面，同 時’照射成膜後反應光，使底層6發生架橋反應的方法。 (2 )添加例如鋼、硼、銘、欽、鲒、錫、釩、鉻等 作爲無機系架橋劑的方法。 (3 )使用醛進行縮醛化方法。 (4 )使羥基醛化的方法。 (5 )添加活化作用乙烯基化合物的方法。 本紙張尺度適用中國國家標準（CNS ) Μ規格（2i0X297公釐） I .^1 1· n I^I 訂 —I 線 (請先閲讀背面之注意事項再填寫本頁) -12- 472252 A7 I-—-- B7 五、發明說明〇〇 ) (6 )添加環氧化合物醚化作用的方法。 (7 )用作爲酸催化劑的酒曲使發生二羧酸反應的方 法。 (請先間讀背面之注意事項再填寫本頁) (8 )添加琥珀酸及硫酸的方法。 (9 )添加三甘醇及丙烯酸甲基的方法。 (10)摻合聚丙烯酸及甲基乙烯基醚馬來酸共聚體 的方法。 關於透明基板1、資訊儲存部3、反應層4及保護層 5與上述第1實施例相同，說明省略。 下面是本實施例的更具體的實驗例，本發明的效果更 淸楚。 選擇聚乙烯醇作爲底層材料，將其2.Owt%水溶 液用旋轉鍍膜法成膜，使用鉻作爲架橋劑使其穩定化。其 它與上述第一實施例相同，得到光資訊記錄媒體。 關於所得光資訊記錄媒體，由於進行與上述第一實施 例相同的光照射，因此，具有與上述第一實施例相同的特 性。 經濟部智慧財產局員工消費合作社印製 第三實施例 參照第4圖說明第三實施例的光資訊記錄媒體。由該 圖可知，在本實施例中，通過將色素充塡到預格式圖形2 內形成資訊儲存部3，光資訊記錄媒體是在該資訊儲存部 3上通過中間層7層壓反射層4，再鍍以包覆該中間層7 和反射層4的保護層5。 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 經濟部智慧財產局員工消費合作社印製 472252 A7 __ B7 五、發明說明（Π ) 中間層7是爲了改善資訊儲存部3和反射層4的密接 性、改善儲存感光度、保護資訊儲存部3等目的而設置的 ’可以含有與第二實施例中底層6相同的親水性樹脂，或 在第一實施例的資訊儲存部3中含有的具有與金屬膜的氧 化還原反應對應的電子提供性或接受性的材料。 中間層7材料選擇親水性樹脂場合’可以將其水溶液 旋轉鍍覆在資訊儲存部3上。對於該中間層7，爲了改善 耐水性和耐熱性，最好對已旋轉鍍覆的中間層7施以架橋 處理或結晶化處理。架橋處理及結晶化處理可以採用第二 實施例中方法。關於透明基板1、資訊儲存部3、反射層 4及保護層5與上述第一實施例相同，省略說明。 第四實施例 參照第5圖說明第四實施例的光資訊記錄媒體。由該 圖可知，本實施例的光資訊記錄媒體是將本發明適用於資 訊儲存區域1 1分爲ROM區域1 1 a和追記區域1 1 b 的、所謂局部R ◦ Μ型的光資訊記錄媒體。 在R Ο Μ區域1 1 a形成光束導向部和標題部同時， 還以預置槽形式形成讀取專用的資訊信號，作爲預格式圖 形2。而在追記區域1 1 b，形成光束導向部的局部標題 部作爲預格式圖形2，在磁道上以一定間隔配置的局部標 題部之間的未儲存部成爲資訊的追記區域。 關於追記區域1 1 b也可以與第一實施例的光資訊記 錄媒體相同。另外，保護層外面也可以形成印刷層。關於 ^紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） ' -14- -------------V -----..----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 472252 A7 ------ B7 五、發明說明（12 ) S明基板1、資訊儲存部3、反射層4、保護層5、底層 6、中間層7、印刷層8的材質、成膜方法等於上述各實 施例相同，說明省略。 可以確認，本實施例的光資訊記錄媒體的追記區域 1 1 b也具有與上述各實施例相同的良好儲存•讀取特性 。還可以確認，關於R ◦ Μ區1 1 a，當受根據C D或 D V D規格的驅動裝置驅動時，能得到良好的讀取特性。 第6圖爲本發明的光碟製造例的流程圖。步驟S 1 -S 2 〇的說明如下： S 1 :硏磨、淸洗玻璃圓碟。 S 2 ’·砂院塗覆。 S 3 :將光致抗蝕膜用旋轉鍍膜法在玻璃圓盤上，形 成具有所設定膜厚的抗蝕層。 S 4 :爲使溶劑飛濺，進行預焙。 S 5 :通過聚光鏡將激光照射在抗蝕層上（刻紋）。 S 6 :進行該已曝光玻璃圓盤的顯影處理。 S 7 :將抗鈾層加熱到T g以上，使溝槽形狀成形（ 第一烘烤）。 S 8 :爲使圖形固化進行烘烤（第二烘烤）。 S 9 :蒸鍍。 S 1 0 :在玻璃圓盤的凹凸面上形成金屬膜，通過剝 離製作原模。 S 1 1 :使用原模進行噴射成形，形成具有所設定膜 厚的復制層。 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） -------I I I !·"* i l· ! I 訂.ί I!---線 (請先閲讀背面之注音？事項再填寫本頁) -15- 經濟部智慧財產局員工消費合作社印製 472252 A7 __ B7 五、發明說明〇3 ) S12:通過旋轉鍍層法在透明基板單面形成硬鍍層 〇 S 1 3 :通過旋轉鍍層法在透明基板單形成底層。 S14:通過旋轉鍍層法在透明基板上側形成儲存層 〇 S15:在儲存層上形成反射層。 S16:通過旋轉鍍層法在儲存層的上層形成保護層 〇 s 1 7 :以單板狀態使用場合。 s18:將各盤粘合成爲雙面光碟。 S19:將該光碟收納在盒中。 S 2 0 :進行特性評價。 在上述流程中，S 7和S 8可同時進行。成形溝槽形 狀時，可在加熱溫度9 0 °C〜1 8 0 °C、時間5〜9 0分 中任意選擇。 第7圖爲第6圖流程中的形成儲存層和保護層的詳細 流程圖。步驟S 2 1 _ S 2 8的說明如下： S 2 1 :準備已形成複製層、底層（也有省略的場合 )等的基板（圓碟）。 S 2 2 :通過旋轉鍍層法將溶解酞菁色素、含金屬偶 氮染料、菁色素及紅外吸收色素的酒精溶液或溶纖劑溶液 鍍於基板上，形成儲存層。 S23 :在30°C〜140°C溫度下10秒以上緩冷 ，使剩餘溶液蒸發。 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） t -----..----訂---------線 (請先閲讀背面之注音？事項再填寫本頁) -10- 經濟部智慧財產局員工消費合作社印製 472252 A7 ------ B7 五、發明說明（14 ) s 2 4 :淸洗色素薄膜，尤其淸洗外周部剩餘色素。 s 2 5 :通過旋轉鍍層法將聚乙烯醇（P VA)和架 橋劑的溶液鍍於儲存膜上。 S 2 6 :用紫外線照射P V A鍍膜1秒以上，進行 p V A架橋。 s 2 7 :架橋後，在3 0 t〜1 4 0 °C溫度下1 〇秒 以上緩冷，使剩餘溶液蒸發。 s 2 8 :爲了淸洗剩餘架橋劑，將水等旋轉塗布於架 橋p v A鍍膜上。 本發明功效及傷點 申請專利範圍第1項的發明之一種光資訊記錄媒體， 在透光性基板上直接或通過底層設有儲存層及金屬層，在 上述金屬層附近使存在藉由光照射被氧化或還原、在上述 金屬層和儲存層的界面上產生鹽具有電子接受性或電子提 供性的材料。根據這種結構，由於金屬膜附近存在具有電 子接受性或電子提供性的材料，所以，當因光照射發生氧 化或還原反應，在金屬膜和儲存層的交界面上產生鹽，由 於上述鹽的存在，金屬膜的腐蝕受到抑制，能減少比1 Q # m大的大缺陷。 申請專利範圍第2項的發明是在第1項構成中，有電 子接受性或電子提供性的材料存在於上述儲存層或設於該 儲存層和金屬層之間的中間層，所以，在金屬膜與儲存層 的交界上，鹽的形成能良好地進行。 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） I I I I I I w 訂·! I!--線 (請先閱讀背面之注意事項再填寫本頁) -17- 472252 A7 ____B7_____ 五、發明說明（15 ) 申請專利範圍第3項的發明是在第1或2項構成中， 金屬層以銀爲主要成份，這樣得到的光資訊記錄媒體具有 良好的適應性。 申請專利範圍第4項的發明是在第1、2或3項構成 中，生成的鹽爲中性鹽、酸性鹽、鹼性鹽或氧化物鹽，可 以抑制腐餓進行，減少比1 Ο μ m大的大缺陷。 申請專利範圍第2項的發明是在第1、2、3或4項 構成中，所述鹽的粒徑爲1 0 // m以下，可以抑制腐蝕進 行，減少比1 0 /z m大的大缺陷。 ----_!·-** .il· — — — 訂----— 1!*^ (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 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） -18-472252 A7 B7 V. Description of the invention (1) [Field of invention] (Please read the notes on the back before filling out this page) The present invention relates to optical information recording media, especially to recordable optical discs (CD-R) using silver reflective film , Digital Video Recordable Disc (DVD-R), etc. [Description of Related Techniques] Conventionally, a gold reflective film has been used as a metal material on optical information recording media such as CD-R. In response to the request for cheap storage media, a metal film mainly composed of silver has been used. However, because silver is the main component, it has poor stability. Especially when light is irradiated, the redox reaction of silver suddenly occurs, and there is a problem that the metal film is corroded and large defects occur. Explanation: The present invention has been made in view of the problems in the background art described above, and an object of the present invention is to provide an optical information recording medium capable of suppressing the corrosion of the metal film. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economics The present invention provides an optical information recording medium, which is provided with a storage layer and a metal layer directly or through a bottom layer on a light-transmitting substrate; A material which is oxidized or reduced by light irradiation and generates a salt at the interface between the metal layer and the storage layer, which has electron acceptability or electron donation. In the optical information recording medium of the present invention, the above-mentioned material having electron acceptability or electron donating property can exist in the storage layer or an intermediate layer provided between the storage layer and the metal layer. This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) * 4-A7 B7 V. Description of the invention (2) In the optical information recording medium of the present invention, the metal layer may include silver as a main component. (Please read the note on the back? Matters before filling this page) In the optical information recording medium of the present invention, the salt may be a neutral salt, an acid salt, a basic salt, or an oxide layer. In the optical information recording medium of the present invention, the particle size of the salt is 10 # m or less. The invention is further explained below. As described above, the present invention relates to an optical information recording medium. A storage layer and a metal layer are provided directly or through a base layer on a light-transmitting substrate. A material having electron acceptability or electron donation exists near the metal layer. It is an electron that is oxidized or reduced by irradiation to generate a salt at the interface between the metal layer and the storage layer. According to this structure, since a material having electron acceptability or electron donation exists near the metal film, when an oxidation or reduction reaction occurs due to light irradiation, a salt is generated at the interface between the metal film and the storage layer. Existence, the corrosion of the metal film is suppressed, and large defects larger than 10 μm can be reduced (corrosion of silver continues to reach a wide range such as the formation of silver chloride, and the low reflectance portion). Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs The above materials with electron acceptability or electron supply exist in the above-mentioned storage layer or the intermediate layer provided between the metal layers of the storage layer, and the formation of salt can proceed well. The optical information recording medium using silver in the above-mentioned metal film has good adaptability. The generated salt is a neutral salt, an acidic salt, a basic salt, or an oxide salt, which can suppress corrosion 'and reduce large defects larger than 10 #m. The particle diameter of the salt is 10 A m or less. 'Suppression of corrosion' can reduce large defects larger than 10 // m. This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) -5-472252 A7 B7 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 5. Description of the invention (3) Brief description of the drawing Figure 1 An enlarged cross-sectional view of a main part of the optical information recording layer of the first embodiment. Fig. 2 is a perspective view of the optical information recording medium shown in Fig. 1. Fig. 3 is an enlarged sectional view of a main part of an optical information recording medium of the second embodiment. Fig. 4 is an enlarged sectional view of a main part of an optical information recording medium of the third embodiment. Fig. 5 is a perspective view of an optical information recording medium according to a fourth embodiment. Fig. 6 is a flowchart of manufacturing the optical disc. FIG. 7 is a flowchart of forming a storage layer and a protective layer. Description of drawing number 1 Transparent substrate 2 Pre-format graphics 3 Information storage unit 4 Reflective layer 5 Protective layer 6 Bottom layer 7 Intermediate layer 8 Printing layer The preferred embodiment illustrates that this paper size applies Chinese National Standard (CNS) A4 Regulations (210 X 297) (Mm) -------------, .'-----: ---- Order -------.-- line (please read the precautions on the back first) (Fill in this page) -6-472252 A7 B7 printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 5. Description of the invention (4) The invention will be described in detail through the following examples. In each embodiment, the implementation form will be described first, and more Specific experimental examples. First Embodiment The optical information recording medium of the first embodiment will be described with reference to the first and second figures. As can be seen from the above two figures, the optical information recording medium of this embodiment is composed of a transparent substrate 1, an information storage portion 3, a metal layer 4, a protective layer 5, and a thin layer 8. Among them, a fine unevenness is formed on one surface of the transparent substrate 1. The pre-format graphic 2 is formed by filling the pre-format graphic 2 to form an information storage portion 3, a metal layer 4 is coated on the information storage portion 3, a protective layer 5 is coated on the metal layer 4, and the protective layer 5 is laminated Thin layer 8. Any known transparent substrate may be used as the transparent substrate 1. For example, a transparent resin material such as polycarbonate, polymethacrylate, polypentene, and epoxy is formed into a desired shape, and a desired one is transferred on one side thereof. Or a transparent resin layer to which a desired preformat pattern is transferred is adhered to a single surface of a transparent ceramic plate such as glass having a desired shape. As shown in FIG. 2, the transparent substrate 1 constituting a disc-shaped optical information recording medium (hereinafter abbreviated as an optical disc) is formed into a disc shape having a center hole 1 a at the center. Since the method of manufacturing the transparent substrate 1 is not the gist of the present invention, description thereof is omitted. The pre-formatted pattern 2 includes at least a light speed guide for causing a storage / reading laser beam to follow the storage track. In the examples of FIGS. 1 and 2, the light beam guiding portion is formed of a spiral or concentric guide groove 2 a formed concentrically with the center hole 1 a, and an address groove or time is formed along the guide groove 2 a. Slot, etc. preset slot 2 b. The preset slot 2 b overlaps the guide slot. The paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) ------------- -----: --- -Order --------- line (please read the precautions on the back before filling out this page) -7- 472252 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 B7 V. Invention Description 4) 2 a on In the case of formation, in order to be able to optically identify the two, as shown in FIG. 1, the guide groove 2a and the preset groove 2b are respectively formed at different depths. When the preset groove 2b is formed between the adjacent guide grooves 2a, both of them can be formed to the same depth. Instead of guiding grooves, the grooves may be made to oscillate slightly along the storage track as the beam guiding portion. Alternatively, the preset groove 2b may not be formed, and only the guide groove may be formed. The information storage unit 3 is formed of a material having an acidic or alkaline property, and corresponds to a redox reaction of the metal film. At the same time, it is formed by filling a thermal storage material in the pre-formatted pattern 2, and the thermal storage material includes at least a material that absorbs light energy and converts it into thermal energy or a part of such an ionic pigment material. Examples of the pigment material capable of forming the information storage unit 3 include polymethine-based dyes, anthraquinone-based dyes, cyanine-based dyes, phthalocyanine-based dyes, Gouton-based dyes, rose-based dyes, pyran-based dyes, and chamomile rings. Based dyes, metal-containing azo dyes, azo dyes, and the like. Among the above materials, a dicarbon cyanine derivative, a phthalocyanine derivative, a naphthalocyanine derivative, a cyanine derivative, and an azo derivative are particularly suitably used. In addition, dyes to which various matting agents such as amine key dyes are added can be used. One or two or more pigment materials may be selected from the above-mentioned pigment material group and dispersed in the resin, and the material thus formed may be used as a material for forming the information storage unit 3. Examples of the resin material capable of dispersing the pigment material include acrylic resin, vinyl resin, phenol resin, fluororesin, silicone resin, polyamide resin, and cellulose resin. The information storage unit 3 is a preformat formed on the transparent substrate 1 by spin-coating a solvent solution of a pigment material selected from the pigment materials listed above. The paper size is in accordance with Chinese national standard specifications (210 x 297 mm)----- -------- Browse, -------- ΐτ -----— 0 (Please read the notes on the back before filling out this page) -8-Employees ’Cooperatives, Intellectual Property Bureau, Ministry of Economic Affairs Printing 472252 A7 ______B7 V. Description of the invention 4) Graphic formation surface. When the pigment material is filled into the grooved pre-format graphics 2, the pigment material attached to the inter-slot surface 2c between the pre-formatted graphics 2 is selectively removed to expose the surface of the transparent substrate 1, only in the pre-formatted graphics 2. Filled with osmium pigment material. As the solvent of the pigment material, an alcohol-based solvent or a cellosolve-based solvent can be used. Chelating materials containing the amphiphilic ligands listed below can also achieve the object of the present invention. Examples of the chelating material include inorganic acids, dibasic acids, hydroxycarbonates, dihydroxy compounds, hydroxyloximes, hydroxyaldehydes and derivatives, diketones and similar compounds, hydroxyquinones, and cycloheptadiene. Phenones, N-oxo compounds, amino acids and similar compounds, hydroxylamines, 8-hydroxyquinolines, aldimines, hydroxyazo compounds, nitrosonaphthols, triazenes, biurets Compounds, methyl waxes and dithizones, biguanides, ethylenedioximes, diamines and similar compounds, pyrene derivatives, thioethers. Derivatives having an imino group and an amidino group may also be used. The metal used for the metal layer 4 is not particularly limited, and metal materials such as aluminum, silver, and copper, or alloy materials containing them as main components can be used. Metals or alloys based on silver are particularly suitable. The so-called silver as the main component means that the content of silver atoms is 80 to 100%, and preferably 90 to 100%. Among these reflective layer materials, aluminum is also used because it is inexpensive and widely used in small magnetic disks. When a metal material or an alloy material is used as the metal layer material, the metal layer 4 can be formed by a vacuum film forming method such as a sputtering method or vacuum evaporation. At this time, the following techniques can also be applied: change the vacuum degree in the vacuum tank (for example, about 10-5 Torr), perform sputtering, form films with different densities or crystal states, and improve the reflectivity of the metal reflective film. This paper size is applicable to China National Standard (CNS) A4 specification (210X2.97 mm)-~~~~ -9- ----------------- ΐτ ----- --- 0 (Please read the notes on the back before filling out this page) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 472252 A7 _ B7 V. Description of the invention (7) The protective layer 5 can be used, for example, S i 〇, S in It is formed of inorganic materials such as SiO2 and η, or organic materials such as photocurable resin. The inorganic protective layer can be formed by a vacuum film formation method, and the organic protective layer can be formed by spin-coating a photocurable resin film (for example, SD 1700, SD318, SD301 manufactured by Dainippon Ink Chemical Industry Co., Ltd.) 4 It is formed after irradiating the resin with curing light. The thin layer 8 contains an ultraviolet curable resin, and after being applied by screen printing, the coating film is cured. When light is irradiated to the optical information recording medium produced as described above, a redox reaction of a metal film occurs. It reacts with a material with electron acceptability and donation provided to assist electron flow, and forms a salt with a particle diameter of 10 / z m or less that can be observed with a microscope. Regarding the particle size of the salt, the smaller the size, the smaller the influence on the electrical signal. Therefore, it is preferably less than 5 # m, and most preferably about 2 y m. Examples of the salt include neutral salts, acidic salts, basic salts, and oxide salts. If the particle size of the salt is less than 10 / z m, you can find a way to remedy it, and it will not be a problem. If the particle size of the salt exceeds 1 0 // m, it may be impossible to remedy and it will be a problem. Although the particle size of the salt may be less than 10 mm, it may become a large defect of more than 10m in succession. This reaction is different from the rapid corrosion of the reflective film, which is visible in the case of water adhesion, for example, and progresses slowly. It is considered that the particle size of the salt is large and invisible. This reaction is considered to be a reaction system based on a single molecule reaction, not a chain reaction. If a solvent remains in the information storage section 3 ', this phenomenon promotes the above-mentioned redox reaction and becomes a major defect. Here, after the information storage unit 3 is formed, in order to perform solvent drying in any one of the steps after the formation of a metal layer, a protective film, and a thin film, the Chinese paper standard (CNS) A4 standard (210 X 297 mm) ϋ ϋ ϋ II nn ϋ nnn I u-n 1 n ϋ 一 -OJ n II ϋ n I (Please read Note 2 on the back before filling this page) -10- 472252 Intellectual Property of the Ministry of Economic Affairs Printed by the Bureau ’s Consumer Cooperatives A7: ... ___ _ B7 11 minutes i: 2,-:. " *** ^ * ~ · ------ 5 'Issue: Explain: (8: & quot h, need to be baked at a temperature above 30 ° C for more than 10 seconds. The following is a more specific experimental example of this example, the effect of the present invention is even better. Pseudoindole-benzopyridine The solution storage of indocyanine dyes (counting ions c I 0 4-and BF 4) was spin-coated on a polycarbonate substrate provided with a preformatted pattern as shown in FIGS. 1 and 2 to form an information storage unit 3. A 100 μm Ag film was formed as a metal film on the information storage unit 3 by a sputtering method. SD 3 1 manufactured by Dainippon Ink Chemical Industry Co., Ltd. was coated on the metal layer. 8 'It is hardened by ultraviolet rays to form a protective layer with a thickness of 5 // m. Next, Lacquer ink (transliteration) manufactured by Jujo Chemical Co., Ltd. is laminated with 50,000 lumens (L u X) (xenon lamp), 30 cm The exposure time is 200 hours (40 t, 50%), and a fine salt that can be used without any problems can be confirmed with a microscope. Due to the formation of this salt particle, large defects above 10 V m can be reduced to 53 counts / second Hereinafter, the salt is a salt formed of silver chloride, silver sulfide, and a material having an element number of 10 or less. Second Embodiment The optical information recording medium of the second embodiment will be described with reference to FIG. In the optical information recording medium, a base layer 6 is formed on the pre-format pattern forming surface of the transparent substrate 1, and the pigment material is filled into the groove corresponding to the pre-format pattern 2 formed on the surface of the base layer 6 to form the information storage portion 3. 6 is to improve the tight contact between the transparent substrate 1 and the information storage unit 3. The paper size applies the Chinese National Standard (CNS) A4 specification (210X 297 mm); ---------- ¾ ------ T ------ i (Please read the notes on the back before filling this page) -11-472252 Economy Printed by the Intellectual Property Bureau Employee Cooperative Cooperative A7 B7 V. Invention Description 4) It is provided for the purpose of improving the storage sensitivity, protecting the information storage unit 3, and other purposes, such as polyvinyl alcohol, polyethylene oxide, polyacrylic acid, and sodium sulfonate. Hydrophilic resins such as polystyrene, polyvinylpyrrolidone, polymethacrylic acid, polypropylene glycol, cellulose methyl ether, polyethylene nitrate, and nitrocellulose are formed. The base layer 6 can be formed by spin-plating an aqueous solution of a hydrophilic resin on the preformat pattern forming surface 2 of the transparent substrate 1. Since the bottom layer 6 is formed of a hydrophilic resin, its water resistance (moisture resistance, moisture permeability) and heat resistance are poor. Therefore, it is preferable to apply a bridge treatment or a crystallization treatment to the bottom layer 6 to improve water resistance and heat resistance. Specifically, after the bridging agent is added to the hydrophilic resin aqueous solution to form the bottom layer 6, the bridging reaction occurs by light irradiation or heating, or the bottom layer 6 without the bridging agent is heat-treated to crystallize, for example, using When polyvinyl alcohol (PVA) is used as a hydrophilic resin, PVA becomes a modified PVA. Comparing the bridging treatment and the crystallization treatment, since there is no adverse effect on the transparent substrate due to heating, and the workability is good, the bridging treatment is better than the crystallization treatment. The following are specific examples of bridging reactions. During implementation, these bridge reactions can be selected and adopted as needed. (1) A method in which ammonium dichromate is added as a bridging agent to treat the surface of the pigment, and at the same time, the reaction light after film formation is irradiated to cause a bridging reaction to occur in the bottom layer 6. (2) A method of adding, for example, steel, boron, Ming, Qin, Hafnium, tin, vanadium, chromium, etc. as an inorganic system bridging agent. (3) An acetalization method using an aldehyde. (4) A method for hydroxyaldolization. (5) A method of adding an activated vinyl compound. This paper size applies to Chinese National Standard (CNS) M specifications (2i0X297 mm) I. ^ 1 1 · n I ^ I Order—I line (Please read the precautions on the back before filling this page) -12- 472252 A7 I ----- B7 V. Description of the Invention (00) (6) A method for adding an etherification effect of an epoxy compound. (7) A method for reacting dicarboxylic acid with koji koji as an acid catalyst. (Please read the notes on the back before filling this page) (8) Method of adding succinic acid and sulfuric acid. (9) A method of adding triethylene glycol and methyl acrylate. (10) A method of blending polyacrylic acid and methyl vinyl ether maleic acid copolymer. The transparent substrate 1, the information storage portion 3, the reaction layer 4, and the protective layer 5 are the same as those in the first embodiment described above, and the description is omitted. The following is a more specific experimental example of this embodiment, and the effect of the present invention is more conspicuous. Polyvinyl alcohol was selected as the base material, and a 2.0 wt% aqueous solution was formed by a spin coating method, and chromium was used as a bridging agent to stabilize it. Otherwise, the same as the first embodiment described above, an optical information recording medium is obtained. The obtained optical information recording medium is irradiated with light in the same manner as in the first embodiment, and therefore has the same characteristics as those in the first embodiment. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs Third Embodiment The optical information recording medium of the third embodiment will be described with reference to FIG. 4. As can be seen from the figure, in this embodiment, the information storage section 3 is formed by filling the pigment into the preformatted pattern 2. The optical information recording medium is formed by laminating the reflective layer 4 on the information storage section 3 through the intermediate layer 7. A protective layer 5 is further plated to cover the intermediate layer 7 and the reflective layer 4. This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 472252 A7 __ B7 V. Description of the invention (Π) The middle layer 7 is for improving the information storage department 3 It may be provided for the purpose of close contact with the reflective layer 4, improvement of storage sensitivity, protection of the information storage section 3, and the like, and may contain the same hydrophilic resin as the bottom layer 6 in the second embodiment, or the information storage section of the first embodiment. The material contained in 3 has an electron donating or accepting property corresponding to the redox reaction of the metal film. When the material of the intermediate layer 7 is selected from a hydrophilic resin ', the aqueous solution can be spin-coated on the information storage unit 3. For this intermediate layer 7, in order to improve the water resistance and heat resistance, it is preferable to apply a bridge treatment or a crystallization treatment to the intermediate layer 7 which has been spin-coated. The bridging treatment and the crystallization treatment can be performed by the method in the second embodiment. The transparent substrate 1, the information storage section 3, the reflective layer 4, and the protective layer 5 are the same as those in the first embodiment described above, and descriptions thereof are omitted. Fourth Embodiment An optical information recording medium according to a fourth embodiment will be described with reference to Fig. 5. As can be seen from the figure, the optical information recording medium of this embodiment is a so-called partial R ◦ type M optical information recording medium in which the present invention is applied to an information storage area 11 divided into a ROM area 1 1 a and a write-back area 1 1 b. . At the same time, a beam guide and a header are formed in the R OM area 1 1 a, and a read-only information signal is also formed in the form of a preset slot as a preformat pattern 2. On the other hand, in the write-on area 1 1 b, a partial header portion forming a beam guiding portion is used as the preformat pattern 2, and an unstored portion between the partial header portions arranged at regular intervals on the track becomes a write-on area of information. The write-back area 1 1 b may be the same as the optical information recording medium of the first embodiment. In addition, a printed layer may be formed on the outer surface of the protective layer. About ^ paper size applies Chinese National Standard (CNS) A4 specification (210 X 297 mm) '-14- ------------- V -----..---- Order --------- Line (Please read the notes on the back before filling out this page) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 472252 A7 ------ B7 V. Description of Invention (12) S The materials of the substrate 1, the information storage unit 3, the reflective layer 4, the protective layer 5, the bottom layer 6, the intermediate layer 7, and the printing layer 8 and the film forming method are the same as those in the above embodiments, and the description is omitted. It can be confirmed that the write-on area 1 1 b of the optical information recording medium of this embodiment also has the same good storage and reading characteristics as those of the above embodiments. It was also confirmed that, with regard to the R ◦ M area 1 1 a, when it was driven by a drive device according to the CD or D V D specifications, good reading characteristics were obtained. Fig. 6 is a flowchart of an example of manufacturing an optical disc according to the present invention. The description of steps S 1 -S 2 〇 is as follows: S 1: honing and washing the glass disc. S 2 ′ · Sand coating. S 3: A photoresist film is formed on a glass disk by a spin coating method to form a resist layer having a predetermined film thickness. S 4: In order to splash the solvent, pre-baking is performed. S 5: The laser is irradiated on the resist layer (engraving) through a condenser lens. S 6: The development process of the exposed glass disc is performed. S 7: The uranium-resistant layer is heated above T g to form the groove shape (first baking). S 8: Baking is performed to cure the pattern (second baking). S 9: vapor deposition. S 1 0: A metal film is formed on the uneven surface of the glass disc, and an original mold is produced by peeling. S 1 1: Spray molding is performed using a master mold to form a replication layer having a set film thickness. This paper size applies to China National Standard (CNS) A4 specification (210 X 297 mm) ------- III! · &Quot; * il ·! I order. Ί I! --- line (please read the back first Note to note? Please fill out this page again) -15- Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 472252 A7 __ B7 V. Description of the invention 〇3) S12: The hard coating is formed on one side of the transparent substrate by the rotary plating method 3: The bottom layer is formed on the transparent substrate by the spin plating method. S14: A storage layer is formed on the transparent substrate by a spin plating method. S15: A reflective layer is formed on the storage layer. S16: A protective layer is formed on the upper layer of the storage layer by the spin plating method. S 17: In the case of single board use. s18: gluing each disc into a double-sided disc. S19: Store the disc in a case. S 2 0: Perform characteristic evaluation. In the above process, S 7 and S 8 can be performed simultaneously. When forming the groove shape, you can choose from a heating temperature of 90 ° C to 180 ° C and a time of 5 to 90 minutes. Fig. 7 is a detailed flowchart of forming a storage layer and a protective layer in the flow of Fig. 6. The description of steps S 2 1 _ S 2 8 is as follows: S 2 1: Prepare a substrate (round disc) on which a replication layer, a bottom layer (which may be omitted), and the like have been formed. S 2 2: An alcohol solution or a cellosolve solution in which a phthalocyanine pigment, a metal azo dye, a cyan pigment, and an infrared absorbing pigment are dissolved is plated on a substrate by a spin plating method to form a storage layer. S23: Slowly cool at 30 ° C ~ 140 ° C for more than 10 seconds to evaporate the remaining solution. This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) t -----..---- order --------- line (please read the note on the back first? Please fill in this page for further information) -10- Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 472252 A7 ------ B7 V. Description of the invention (14) s 2 4: Wash the pigment film, especially the remaining part of the outer periphery pigment. s 2 5: A solution of polyvinyl alcohol (P VA) and a bridging agent is plated on a storage film by a spin coating method. S 2 6: The P V A coating is irradiated with ultraviolet rays for more than 1 second to perform p V A bridging. s 2 7: After bridging, slowly cool for more than 10 seconds at a temperature of 30 t to 140 ° C to evaporate the remaining solution. s 2 8: In order to rinse the remaining bridging agent, spin coating water or the like on the bridging p v A coating. An optical information recording medium according to the invention of claim 1 in the scope of patent application for the efficacy and damage of the present invention is provided with a storage layer and a metal layer directly or through a bottom layer on a light-transmitting substrate, and the existence of the vicinity of the metal layer is illuminated by light. A material which is oxidized or reduced to generate a salt at the interface between the metal layer and the storage layer and has electron acceptability or electron donation. According to this structure, since a material having electron acceptability or electron donation exists near the metal film, when an oxidation or reduction reaction occurs due to light irradiation, a salt is generated at the interface between the metal film and the storage layer. Existence, the corrosion of the metal film is suppressed, and large defects larger than 1 Q # m can be reduced. The invention in the second scope of the patent application is that in the first structure, a material having electron acceptability or electron supply exists in the above-mentioned storage layer or an intermediate layer provided between the storage layer and the metal layer. At the interface between the film and the storage layer, salt formation can proceed well. This paper size applies to China National Standard (CNS) A4 specification (210 X 297 mm) IIIIII w order! I!-Line (Please read the precautions on the back before filling this page) -17- 472252 A7 ____B7_____ V. Description of the invention (15) The invention of claim 3 in the scope of patent application is that in the constitution of item 1 or 2, the metal layer is mainly composed of silver, and the optical information recording medium thus obtained has good adaptability. The invention of item 4 in the scope of the patent application is that in the constitution of item 1, 2 or 3, the generated salt is a neutral salt, an acidic salt, an alkaline salt or an oxide salt, which can inhibit the progress of hunger and reduce the ratio by 1 Ο μ m big big defect. The invention of item 2 of the scope of patent application is that in the constitution of item 1, 2, 3 or 4, the particle size of the salt is 10 / m or less, which can inhibit the progress of corrosion and reduce the size larger than 10 / zm. defect. ----_! ·-** .il · — — — Order ----— 1! * ^ (Please read the precautions on the back before filling out this page) Printed by the Consumers ’Cooperative of Intellectual Property Bureau of the Ministry of Economic Affairs Paper size applies to China National Standard (CNS) A4 (210 X 297 mm) -18-