TW464855B - An optical storage medium - Google Patents

An optical storage medium Download PDF

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Publication number
TW464855B
TW464855B TW087115932A TW87115932A TW464855B TW 464855 B TW464855 B TW 464855B TW 087115932 A TW087115932 A TW 087115932A TW 87115932 A TW87115932 A TW 87115932A TW 464855 B TW464855 B TW 464855B
Authority
TW
Taiwan
Prior art keywords
optical storage
patent application
storage medium
dye
nanometers
Prior art date
Application number
TW087115932A
Other languages
English (en)
Inventor
Reiner Vesper
Hartmut Loewer
Raimund Zimmermann
Wilfried Haese
Original Assignee
Bayer Ag
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Publication date
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Application granted granted Critical
Publication of TW464855B publication Critical patent/TW464855B/zh

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

Description

464855 A7 鯉潆部中央標準局另工消资合作社印裝 五 '發明説明（） 本發明係關於一種可寫光學存儲媒介，特別是呈單一 多重可寫小型磁碟片（CD)之形式，其包含—個特殊載體^ 〇 習用光學存儲媒介’制是㈣，其料記錄與讀出係 藉助於雷射光達成，其係由一個透明載體，一個記錄層， 包含金屬譬如Te、Bi、或Mn，或染料譬如花青、梅羅花青 (merocyanine)、酞花青或偶氮染料，一個金屬反射層以及選 用之一個保護層所組合而成。資料記錄係經由以雷射光照 射經過透明載體而達成。在此程序期間，記錄層係在昭 點變形、昇華、蒸發或改質’因此若必要則形成凹痕。自 由空間亦經常在記錄層與相鄰層之間形成。M '岣、Μ或 Cu之反射金屬層，係經常提供在可寫層上，且一個保護層 係依次提供在後者之上1出係經由以較低能量之雷射光 照射’ 經料《體錢成。從凹痕反射之光線與從 存儲媒介之其餘部份反射之光線間之對比，係被讀 電信號。 習用不可寫入之CD(ROM型：唯讀記憶體）並未包含前述 可寫層’而僅只是包含相當於欲被複製資料之凹痕，其已 在載體上形成，例如藉由壓機模製。除此之外，其造係 相當類似。 ^ 關於更嚴密解釋，可參閱A_B.Marcham，光學記錄〇99〇)。 關於已知⑽之-項問題，係為記錄層之相對較高敏感 性。熱之作用及_之作用，可能會造成記錄層被改變， 其結果是⑽不再可寫及/或不再可讀。因此， 造 _ ~ 3 · (CNS ) AAmtf ( 2l0x：^n ；---- ------------t------—IT------^ o-?l閱讀1Ϊ·而之ij.t事項再填ft?本頁) 經滂部中央標準局貝工消贽合竹社印弒 464855 A7 ________J37 五、發明説明（2 ) ~ 商建議CD-R不得直接曝露至陽光。設備製造商忠告勿將 CD-R使用在DVD電唱機中，因為擔心DVD電唱機中所使用 之較短雷射波長可能會傷害CD_R。所存儲之資訊於是只能 在易受到錯誤下讀出；此係藉助於電子試驗儀器度量，並 在其他表示形式中，特別被引用為區塊誤差率。 區塊誤差率係以概略形式給予缺損資訊區塊之總數，且 應儘可能低。若區塊誤差率超過220之數值，則資料存儲媒 介係在規格之外《區塊誤差率係使用CD試驗電唱機測定^ 關於更詳細資訊，可參閱w Schild__Fehlerv〇m電唱機 (Fehler von der Platte)", Funkschau 23/1988。CD-R 亦可能被改變至 某種程度，以致其已不能被讀取或寫入。 本發明之從屬目的係為提供可寫光學存儲媒介，特別是 可寫CD ’其顯示經改良之安定性，且其因此具有經改良之 使用壽命。 此項目的係根據本發明藉由提供—種可寫光學存儲媒介 而達成，該媒介包含一個保護層，一或多個可寫層，選用 之一個光反射層及至少一個載體層，其特徵在於該載體層 3有至J/ -種染料，其在用於寫入及/或讀取之雷射波長 下具有至夕70/之透光率，且其在比雷射光波長短至少 〇〇毫微米之所有其他可見光波長下，具有至少减之吸收 率。 載體層較佳係含有至少兩種染料，最佳為三種染料，以 達成所要之吸收特性。 此或夕種染料較佳係選自包括葱眼與吼嗤。弄染料。 本紙狀度刺巾:縣（CNS ) JK ~~1 -iiΊ—訂------線 ___(劫先閱讀背而之注悉事項洱禎衿本石} 464855 A 7 H? 經消部中央標卑局負工消泞合作社印^ 五、發明説明（3
Makr〇leXgelb3G®(吡唑唔染料，染料索引第1部份：溶劑黃色 叫’ MakrolexrotSB®(蒽醌染料，染料索引第1部份，溶劑紅 色52，第2部份編號68210)及HythermBlueE@(蒽醌染料染料 索引第1部份’溶劑藍色1〇1)係為特佳的。 載體層之材料並不重要；沒有特殊限制。此載體層包括 使用於光學存儲媒介之習用材料，特別是使用於CDR者， 且特別包括對於用以寫入及/或讀取之雷射光為透明之聚 合體，譬如聚（共）碳酸酯、聚甲基丙烯酸甲酯、聚_4•甲基 戊烯、非晶質環狀聚烯烴、聚酯、環氧樹脂或聚丙烯酸 S曰特別是使用聚（共）¾酸酷。其可包含呈凹痕形式之資 訊信號及/或控制信號及/或導引溝槽，意即其可為具有 或未具有資訊信號之載體，其係視情況經格式化。其可視 情況以常用方法經表面處理。 該一或多種染料係以常用方法摻入載體材料中，例如藉 由將染料與載體材料摻配在一起，或藉由將染料沈積在載 體材料之顆粒上。染料較佳亦可以母批料添加。 此一或多種染料在載體材料中之濃度，較佳為01至14重 量％ ’最佳為0.3-0.8重量％。載體係以常用方法製自含染 料之材料，例如藉由射出成曳或麼印。 若提供多個載體層，則此等層較佳係包含相同聚合體材 料。在此狀況中’可將一或多種染料摻入單—載體S中或 多個载體層中。 一 視情況提供之可寫層’較佳係為習用敏感性染料層（參閱 例如EP-A 353 392、488 231及41〇879)。其包含一或多種有機 -5- 本纸張尺度適用中國國家榡率（CNS )/\4現枯（2丨 ----------裝-----—訂------線 ("先閱讀背而之注意事項再填巧本页) 經滅部中皮標嗥局员^消费合作社印^ 4648 5 5 A7 — ___Η 7 五 '發明説明U ) 〜~~ ' 染料，譬如欧花青、梅羅花青、花青、十朵二叛花青、藍 香油烴及偶氮染料。其係以常用方法，例如於溶劑中作成 溶液’藉旋轉塗覆沈積。例如’使用雙丙酮醇’氟化醇類 ，譬如四氟丙醇、丁醇或其混合物作為溶劑。 可寫層之染料係與載體層之染料不同。花青染料為特佳 者。 視情況提供之反射層，較佳係包含在所使用之雷射光波 長下具有大於so%反射率之金屬，譬如Au、Ag、以或 其合金。其可例如自氣相藉沈積方法塗敷，譬如真空沈積 、滅射、離子鑛覆或類似技術。 保護層包含一種具有顯著抗衝擊之樹脂，其通常為環氧 樹脂、聚丙烯酸酯樹脂或硬化聚矽氧樹脂。保護層經常藉 由旋轉塗覆樹脂而沈積’接著藉UV照射熟化而形成。但是 ’其亦可包含可撓性材料，譬如聚胺基甲酸酯樹脂。 個別層之層厚較佳為0.5-1.2毫米（載體），至高2〇〇毫微米（ 可寫層）’至高200毫微米（反射層）及5_200毫微米（保護層） 〇 用於寫入及/或讀取之雷射波長，較佳為760-800毫微米 ’最佳為7"75-785毫微米；或620-660毫微米，最佳為635-650 毫微米。 下述實例進一步解釋本發明^ 聚碳酸酯之相對黏度，係使用聚碳酸酯在二氣甲烷中之 0.5%溶液，於25°C下度量。 實例： ________^6- 本紙張尺i適用中國國家標举（CNS ) Λ4 Ί n I 1 I.XJ·^1. 訂 線 464855 經碘部中央標挲局負工消费合作社印较 A7 B7 五、發明説明（5 ) 根據本發明之實例 將下列混合物製成載體材料： 99·6224 重量 ％ 粒狀聚碳酸醋，Makrolon CD 2005，由 Bayer AG 提供’其為一種包含第三-丁基盼末端基之 雙酚A之聚碳酸酯，具有平均溶液黏度為 1.2〇 (當在二氣甲烷中，於25°C下，以〇·5克 在100毫升二氣甲烷中之濃度度量時）， 0·〇6513重量％吡唑。弄染料Macrolexgelb 3G (在染料索引第1部 份中被記錄為溶劑黃色93)，Bayer AG， 0.19746重量％蒽醌染料Macrolexrot 5B (在染料索引第1部份 中被記錄為溶劑紅色52)，Bayer AG， 0.11501重量％蒽酿染料Hythermblue E(在染料索引中被記錄 為溶劑藍色101)。 將染料與粒狀材料在密閉容器中強烈混合，接著將混合 物在雙螺旋桿Wemer Pfleiderer捏合機ZSK 53型中摻配，材料 溫度約240°C。 接著使用CD-R沖壓工具’在CD射出成型機中，製成厚度 1.2毫米且外徑120毫米之CD-R毛坯。CD-R製造係在材料溫 度330 C且模溫100°C下’使用10秒循環時間達成。CD-R沖 壓工具，具有預先形成之凹槽’以螺旋線形式配置，其具 有平均寬度7S毫微米’平均深度丨8〇毫微米及磁軌間距16 微米。 度量CD-R毛坯之透光率。圖1顯示此材料在波長低於7〇〇 毫微米下具有高吸收率。（度量幾何：〇。/擴散） I ·! ]—. I JJ ' ~1 It V 1—-.訂 ^ ί ϋ {对九閱讀背而之""爭ί?#^5ϊ?本頁} 本紙张尺度適用中國國家標嗥（CNS ) Λ4叱枯（210〆 、 經"部中史標^局员工消费合作社印聚 464855 A7 Η 7 五、發明说明（6 ) 比較實例 為進行比較，故製造類似MakrolonCD2〇05基材惟未添加染 料之CD-R毛坯。圖2顯示此材料在整個可見光區域具有高 透光率（度量幾何：〇° /擴散）。 接著將染料層沈積在CD-R毛坯上。由Fuji提供之花青染 料OM57，作為染料使用’且併用由Nippon Kayaku公司提供 之Kayasorb IRG-022淬滅劑。染料對淬滅劑之比例為20 : 1。 染料/淬滅劑沈積係由雙丙酮醇溶液，利用旋轉塗覆達成 ，其條件係經選擇以致形成15〇毫微米之平均染料層厚度。 隨後蒸發厚度為60至80毫微求之金層至染料層上。接著 使此金層具有厚度約10微采之保護漆。 然後，將根據本發明及自比較試驗所獲得之CD-R在 Yamaha CD-R 100燒錄器中，於寫入/讀取比例為4x下寫入。 接著使用由 Ingenieurburos for Umwelttechnologie und Me /5 technik (Bielefeld)提供之ISEDD試驗電唱機，度量CD-R區塊誤差率 (BLER)，其中係將Philips與Sony電唱機整合。 CD-R之品質具有可比擬之程度，如下表1中所示： 表1 ____BLER ( Sony) BLER (Philips) 根據本發明之CD-R 60 59 在基材中未使用染料之CD-R 62 64 接著使根據本發明之CD-R及比較例之CD-R，接受根據 ISO4892-2之曝光試驗。曝光係經過基材至CD-R染料層上， 於下列試驗條件下達成： ________ -8- 本紙張尺度適財_料 cns ) λ^¥ (210Χ?Μ7：->^ i ---------___n _ _ T - - - ----n 每 (-1閱讀背而之注意事項"埭"本5 ) 464855 A7 _B7 五、發明說明（7) 裝置： Atlas 氣-WOM 光源= 6.5 kW 氙燈(Atlas) 照射強度： 0.35 W/(m2 *nm)，在340毫微米下度量 濾光__ Pyrex/Pyrex 黑色標準溫度： 65〇C 試驗室溫： 42〇C 相對大氣濕度： 65% 噴霧循環： 102/18分鐘 然後，使用ISEED試驗電唱機’再一次度量區塊誤差率。 比較例之CD-R顯示在BLER上之顯著增加，即使在約10小 時之曝光時間後亦然。在約2〇小時之曝光時間後’ BLER值 為約500，意即在規格之外。 根據本發明之CD-R，在BLER上未顯示增加，一直到實際 上50小時之曝光時間。 圖式之簡單說明： 圖1 :根據本發明之CD-R毛坯具體例之透光率 圖2 :比較實例CD-R毛坯之透光率 ^--------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较 -9- 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 464855 Λ7 Η 7 五、發明説明（7 ) 裝置： Atlas 氙-WOM 光源： 6_5kW 氙燈(Atlas) 照射強度： 0.35 W/(m2 *nm)，在340毫微米下度量 遽、光： Pyrex/Pyrex 黑色標準溫度： 65〇C 試驗室溫： 42〇C 相對大氣濕度： 65% 噴霧循環： 102/18分鐘 然後，使用ISEED試驗電唱機，再一次度量區塊誤差率。 比較例之CD-R顯示在BLER上之顯著增加，即使在約10小 時之曝光時間後亦然。在約20小時之曝光時間後，BLER值 為約500，意即在規格之外。 根據本發明之CD-R，在BLER上未顯示增加，一直到實際 上5〇小時之曝光時間。 -----------t------IT------0 (討先閱讀背而之注意市Jrl4垆.¾本頁) 經淺部中央摞绛局努工消费合竹社印狀 _____ 9 - 本紙掁尺度ϋ用中國H1家打:準（CNS ) Λ4ΜΙ怙（210χ?47公々1

Claims (1)

  1. 專利申請案第87115932號 六、申請專利範圍 4讀委£ηΓ.’本笼修.-;..1扳是否瓷更雇實質内容 經濟部智慧財產局員工消費合作杜印製 A8 Βδ Patent ^ppln. No. 8?|Uj 修正之申請專奋文本 Amended Ch ims in "Chin織 (90年知月JT E gSf (Submitted on January 19 , 2001) i_ 種可寫光學存儲媒介，其包含一保護層，一或多個可 寫層’選用之一光反射層’及至少一載體層，其特徵在 於該載體層含有至少一種選自包括蒽酿或U比唾η弄染料之 染料，該染料之含量為0.1-1重量％，其在用於寫入及/ 或讀取之雷射波長下，具有至少70%之透光率，且其在 比雷射光波長短至少1〇〇毫微米之所有其他可見光波長 下’具有至少70%之吸收率。 2. 根據申請專利範圍第1項之光學存儲媒介，其特徵在於 載體層含有至少兩種染料。 3. 根據申請專利範圍第1項之光學存儲媒介，其特徵在於 透光率為至少80%，較佳為85%，且吸收率為至少90 % ’較佳為95%。 4. 根據申請專利範圍第1至3項中任一項之光學存儲媒 介’其特徵在於供寫入及/或讀取之雷射波長，為76〇· 800毫微米’較佳為775-785毫微米。 5_根據申請專利範圍第1至3項中任一項之光學存儲媒 介’其特徵在於供寫入及/或讀取之雷射波長，為62〇_ 660毫微米，較佳為635-650毫微米。 6_根據申請專利範菌第1至3項中任一項之光學存儲媒 介’其特徵在於一或多種染料係選自Makrolexgelb 3G®、 Makrolexrot 5B® 或 Hytherm Blue E®。 7.根據申請專利範圍第1至3項中任一項之光學存儲媒 介’其係呈單一或多重可寫小型磁碟片形式。 -10- 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） If-------IJI — ·寬，· 1 — .11 I I I 訂 --------- (請先閱讀背面之注意事項再填寫本頁) 4648 B 5
    8. 根據申請專㈣7項之光學存仑 可寫層包含一種敏感性染料，二J特徵在衣 同。 興这4多種染料耳 ί--------------Υ (請先閱讀背面之；ttj 項再填寫本頁) 4 經濟部智慧財產局員Η消費合作杜印製 -11 - 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐）
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WO1999018571A1 (de) 1999-04-15
CA2305147A1 (en) 1999-04-15
KR20010024430A (ko) 2001-03-26
IL134872A0 (en) 2001-05-20
CN1273666A (zh) 2000-11-15
BR9812868A (pt) 2000-08-08
AU1026699A (en) 1999-04-27
EP1023724A1 (de) 2000-08-02

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