JPH0614414B2 - 転写型光記録媒体 - Google Patents

転写型光記録媒体

Info

Publication number
JPH0614414B2
JPH0614414B2 JP61141009A JP14100986A JPH0614414B2 JP H0614414 B2 JPH0614414 B2 JP H0614414B2 JP 61141009 A JP61141009 A JP 61141009A JP 14100986 A JP14100986 A JP 14100986A JP H0614414 B2 JPH0614414 B2 JP H0614414B2
Authority
JP
Japan
Prior art keywords
layer
optical recording
recording medium
transfer type
card
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP61141009A
Other languages
English (en)
Other versions
JPS62298039A (ja
Inventor
実 藤田
洋一 福島
敏夫 芳賀
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kyodo Printing Co Ltd
Original Assignee
Kyodo Printing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kyodo Printing Co Ltd filed Critical Kyodo Printing Co Ltd
Priority to JP61141009A priority Critical patent/JPH0614414B2/ja
Priority to CA000539823A priority patent/CA1300264C/en
Priority to AT87305372T priority patent/ATE82813T1/de
Priority to EP87305372A priority patent/EP0250227B1/en
Priority to DE8787305372T priority patent/DE3782769T2/de
Publication of JPS62298039A publication Critical patent/JPS62298039A/ja
Priority to US07/397,609 priority patent/US5156941A/en
Priority to US07/471,037 priority patent/US5110707A/en
Publication of JPH0614414B2 publication Critical patent/JPH0614414B2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

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    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
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Description

【発明の詳細な説明】 （イ）発明の目的 ［産業上の利用分野］ この発明は光記録媒体に関するものである。
近年ＩＤカードやキャッシュカードやバンクカードとし
て各種の情報を記録したカードが普及して来ている。
［従来の技術］ この種のカードには個人データや発行会社のデータ等の
各種の情報を記録する必要があり、初期の段階において
は、その様な情報を可視的な文字や記号で記録してお
り、また、後期の段階においては磁気を利用した電気信
号で記録しているが、改ざんの防止や情報量の増加に対
応する必要がある。
そのため、最近光技術を応用した光記録層を持つ光カー
ドが開発されて来ている。
従来考えられている光カード１の基本的な構成は、第１
図に示すように、カード基材２と透明なプラスチック製
の保護層３の間に光記録層４を挾み込んだものであり、
光の読み取りは保護層３の側からなされるように構成さ
れている。
ところで、このような光カードを製作するための技術と
しては各種のものが開発されて来たが、最近、特に光カ
ードの製作を容易にする観点から、転写技術を利用した
光カードの製作法が考えられている。そのような転写技
術を利用した光カードの製作技術の一例としては第８図
に示す転写型光記録媒体を使用するものがある。
即ち、転写型光記録媒体１０１はベースフィルム１０２
の表面に離型層１０３を形成し、この離型層１０３の上
に透明合成樹脂製の保護層３、光記録層４及び接着剤層
１０４を順次積層したものである。この転写型光記録媒
体１０１を使用して光カードを製作する場合には第９図
に示すように、ベースフィルム１０２を離型層１０３で
剥離させ、かつ接着剤層１０４でカード基材２に貼着す
るのである。
［発明が解決しようとする問題点］ しかるに、このような転写型光記録媒体１０１及びそれ
を使用した光カードでは離型層１０３が光読み取り側、
即ち保護層３の上になるので、光読み取りに際し、離型
層１０３を剥離させた後の残滓が保護層３の透光性を劣
化させ、光記録層４の読み取りに誤差を生じる恐れがあ
る。
この発明は上記の如き事情に鑑みてなされたものであっ
て、光カードの製作が容易であり、かつ離型層が保護層
の透光性を劣化させることもない転写型光記録媒体を提
供することを目的とするものである。
（ロ）発明の構成 ［問題を解決するための手段］ この目的に対応して、この発明の転写型光記録媒体は、
離型処理を施したベースフィルムの離型処理面に光情報
パターン支持層と光反射層を有する光記録層と透光性の
接着剤層を前記光記録層の光入射面が前記接着剤層に向
い合う状態に順次積層してなることを特徴としている。
以下、この発明の詳細を一実施例を示す図面について説
明する。
第２図において１１は転写型光記録媒体であり、転写型
光記録媒体１１はベースフィルム１２の上に離型処理に
よって離型層１３が形成され、更に離型層１３の上に光
記録層４が形成され、更にその上に接着剤層１４が形成
されている。
ベースフィルム１２はポリカーボネート樹脂、ポリエス
テル樹脂等の材料で構成されている。光記録層４は離型
層１３上に形成され、かつデータピットを構成する読み
取り光反射層１５（第３図、第４図、第５図）を有する
ものである。光記録層４は読み取り光反射層１５の有無
または読み取り光反射層１５に凹凸を着けることにより
読み取り光の位相差を生ぜしめることによって情報を記
録している。読み取り光反射層１５は光高反射性を有す
る材料からなる薄膜で構成され、その様な材料としては
Ａｌ，Ｃｕ，Ａｇ，Ｎｉ，Ｃｒ，Ｚｎ，Ｓｎ等を用いる
ことができる。
また、読み取り光としては、半導体レーザ光等の近赤外
光や白色光、タングステン光等の可視光が好適である
が、赤外光や紫外光も使用可能である。
接着剤層１４は透明な合成樹脂接着剤を光記録層４の上
からロールコート、スピンコート、フローコート等によ
り塗布しかつ乾燥させて形成される。この接着剤層１４
を構成する合成樹脂製接着剤としては塩化ビニル／酢酸
ビニル樹脂、ポリウレタン樹脂、ポリエステル樹脂等を
使用することができる。
次に以上のような転写型光記録媒体の製造方法を第３図
以下について説明する。
第３図は光記録層４をスタンピング法によって形成する
場合の転写型光記録媒体１１ａの製造工程を示してい
る。
即ち、ベースフィルム１２の片面に離型処理を施して離
型層１３を形成する（離型処理工程）（第３図
（ａ））。
次に離型層１３の上にＵＶ硬化樹脂等をコーティングし
て型取り用樹脂層１７（光情報パターン支持層）を形成
する（型取り樹脂コーティング工程）（第３図
（ｂ））。この型取り用樹脂層１７は離型層としての機
能を持たせることもできるので、その場合には、第３図
（ａ）の離型処理工程は不要になる。
次に、光記録層の凹凸パターンを予め賦型されたスタン
パー１８を型取り用樹脂層１７に押圧して、型取り用樹
脂層１７にスタンパー１８の凹凸形状を写し取り、かつ
型取り用樹脂層１７を硬化させる（型取り工程）（第３
図（ｃ））。
次に型取り用樹脂層１７の上からＡｌ等の高反射性の金
属を蒸着して反射膜２１を形成する。こうして形成され
た反射膜２１はスタンパー１８と同じ凹凸を持ち、凹
部、凸部の位置の差によって反射光に位相差が生じ、こ
れによって情報を光学的に読み取ることができる（反射
膜コーティング工程）（第３図（ｄ））。
次に反射膜２１の上から透明の接着剤を塗布して接着剤
層１４を形成する（接着剤コーティング工程）（第３図
（ｅ））。
こうして転写型光記録媒体１１ａが完成する。
第４図は光記録層４をエッチング法によって形成する場
合の転写型光記録媒体１１ｂの製造工程を示している。
即ち、ベースフィルム１２の片面に離型処理を施して離
型層１３を形成する（離型処理工程）（第４図
（ａ））。
次に、離型層１３の上に読み取り光に対して高光吸収性
または高い透過性を有する樹脂からなる光情報パターン
支持層２２を形成する（光情報パターン支持層形成工
程）（第４図（ｂ））。
光情報パターン支持層２２は、それ単独では機械的強度
が不足な反射膜２１を支持すると共に、反射膜２１の平
滑性を増大させる。更に、読み取り光に対して高い吸収
性または高い透過性を持たせることも可能である。
また、反射膜２１と、光情報パターン支持層２２との接
着性を高めることにより、データの書込み（エッチング
等）が容易となる。
一般にはエッチング法または後述のレジストリフトオフ
法では反射膜のある部分とない部分をデータに対応させ
るのでＳ／Ｎを高めるためにはコントラストを大きくと
る必要がある。従って支持層には読み取り光に対して高
い吸収率が高い透過率が要求される。
この光情報パターン支持層２２は離型層としての機能を
持たせることもできるので、その場合には、第４図
（ａ）の離型処理工程は不要になる。
次に光情報パターン支持層２２上に真空蒸着等により読
み取り光に対して高反射率を有する材料からなる反射膜
２１を形成する（反射膜コーティング工程）（第４図
（ｃ））。
次に反射膜２１上にレジスト２３をスピンコートする
（レジストコーティング工程（第４図（ｄ））。このレ
ジスト２３はポジ型のものでもよく、またネガ型のもの
でもよい。
次に光情報のパターンを持つマスク２４をレジスト２３
上に密着させ露光する（マスク露光工程）（第４図
（ｅ））。
次に露光したレジスト２３を現像する。これによって光
情報パターンのレジスト２３への転写が完了し、レジス
ト２３には光情報に対応した凹凸が形成され、凹部には
レジストが除去されて存在せず、反射膜２１の表面が露
出し、残余の部分ではレジスト２３が反射膜２１の表面
を覆っている（現像工程）（第４図（ｆ））。
次にレジスト２３の上から反射膜２１をエッチングす
る。これによって反射膜２１の内レジスト２３に覆われ
ていない部分は除去されて光情報パターン支持層２２の
表面が露出し、反射膜２１のレジスト２３に覆われてい
る部分は光情報パターン支持層２２の表面上に蒸着され
た状態でレジストとともに残留する（エッチング工程）
（第４図（ｇ））。
次に残留したレジストを除去する（リムーブ工程）（第
４図（ｈ））。
次に残留した反射膜２１からなる光反射層１５の上から
透明の接着剤を塗布して接着剤層１４を形成する。（接
着剤コーティング工程）（第４図（ｉ））。こうして、
転写型光記録媒体１１ｂが完成する。
第５図は光記録層４をレジストリフトオフ法によって形
成する場合の転写型光記録媒体１１ｃの製造工程を示し
ている。
即ち、ベースフィルム１２の片面に離型処理を施して離
型層１３を形成する（離型処理工程）（第５図
（ａ））。
次に、離型層１３の上に読み取り光に対して高い光吸収
性または高い透過性を有する樹脂からなる光情報パター
ン支持層２２を形成する（光情報パターン支持層形成工
程）（第５図（ｂ））。
この光情報パターン支持層２２は離型層としての機能を
持たせることもできるので、その場合には、第５図
（ａ）の離型処理工程は不要になる。
次に光情報パターン支持層２２上にレジスト２３をスピ
ンコートする（レジストコーティング工程）（第５図
（ｃ））。このレジスト２３はポジ型のものでもよく、
またネガ型のものでもよい。
次に光情報のパターンを持つマスク２４をレジスト２３
上に密着させ露光する（マスク露光工程）（第５図
（ｄ））。
次に露光したレジスト２３を現像する。これによって光
情報パターンのレジスト２３への転写が完了し、レジス
ト２３には光情報に対応した凹凸が形成され、凹部には
レジストが除去されて存在せず、光情報パターン支持層
２２の表面が露出し、残余の部分ではレジスト２３が光
情報パターン支持層２２の表面を覆っている（現像工
程）（第５図（ｅ））。
次にレジスト２３上に真空蒸着等により読み取り光に対
して高反射率を有する材料からなる反射膜２１を形成す
る（反射膜コーティング工程）（第５図（ｆ））。
次にレジスト２３をリフトオフ法によって除去する。こ
れによって反射膜２１の内レジスト２３上にある部分は
レジスト２３とともに除去されて光情報パターン支持層
２２の表面が露出し、反射膜２１の内レジスト２３上に
ない部分は光情報パターン支持層２２の表面上に蒸着さ
れた状態で残留して光反射層１５を構成する（リフトオ
フ工程）（第５図（ｇ））。
次に残留した反射膜２１（光反射層１５）の上から透明
の接着剤を塗布して接着剤層１４を形成する（接着剤コ
ーティング工程）（第５図（ｈ））。
こうして、転写型光記録媒体１１ｃが完成する。
［作用］ 以上のように構成された転写型光記録媒体１１（１１
ａ，１１ｂ，１１ｃ）を使用する場合の操作は次の通り
である。
第６図に示すように、ポリカーボネート等の光透過性の
高いプラスチックまたはガラス等からなる保護層３を準
備し、これに、転写型光記録媒体１１を接着剤層１４が
接触した状態で重ね合わせ、これに熱、圧力を作用させ
て、保護層３と転写型光記録媒体１１を貼着し、その貼
着が完了した後、ベースフィルム１２を離型層１３で剥
離する。
もっとも、転写型光記録媒体１１のベースフィルム１２
を離型層１３で剥離させた後に、保護層３に貼着しても
よい。ベースフィルム１２の剥離の場合には、離型層１
３はベースフィルム１２側にあっても、或いは光情報パ
ターン支持層２２上に残ってもよい。
このようにして貼合した光記録層４と保護層３を、更
に、光記録層４が間になるような状態で接着剤層２５を
介してカード基材２に貼合して第７図に示す光カード１
が完成する。
（ハ）発明の効果 このように構成された転写型光記録媒体を使用すれば、
転写によって光記録媒体をカードに取付けることができ
るので、光カードの製作が極めて容易である。また、光
記録層が光情報パターン支持層と光反射層を有する光記
録層であることが、この発明の転写型光記録媒体を使用
して光記録カードを製造する場合に、光反射層が密閉さ
れた状態であるため、光反射層の腐蝕が防止されるこ
と、及び光記録層の強度の点でも有利なものとなり、こ
の記録媒体が転写型であることとあいまって、光記録カ
ードの製造の容易化、迅速化を可能にする。しかも、ベ
ースフィルムの離型層が光記録層の読み取り側とは反対
側にあるので、転写時にベースフィルムを剥離させた離
型層の残滓が、読み取り光の入射、反射を阻害すること
がない光カードを得ることができる。
【図面の簡単な説明】
第１図は光カードの縦断面説明図、第２図は転写型光記
録媒体の縦断面説明図、第３図は転写型光記録媒体の製
造工程の一例を示す工程説明図、第４図は転写型光記録
媒体の製造工程の他の例を示す工程説明図、第５図は転
写型光記録媒体の製造工程の更に他の例を示す工程説明
図、第６図は転写型光記録媒体のベースフィルムを剥離
させた状態を示す縦断面説明図、第７図は光カードの縦
断面拡大説明図、第８図は従来の転写型光記録媒体を示
す縦断面説明図、及び第９図は従来の転写型光記録媒体
のベースフィルムを剥離した状態を示す縦断面説明図で
ある。 １……光カード、２……カード基材、３……保護層、４
……光記録層、１１……転写型光記録媒体、１２……ベ
ースフィルム、１３……離型層、１４……接着剤層、１
５……読み取り光反射層、１７……型取り用樹脂層、１
８……スタンパー、２１……反射膜、２２……光情報パ
ターン支持層、２３……レジスト、２４……マスク

Claims (1)

    【特許請求の範囲】
  1. 【請求項１】離型処理を施したベースフィルムの離型処
    理面に光情報パターン支持層と光反射層を有する光記録
    層と透光性の接着剤層を前記光記録層の光入射面が前記
    接着剤層に向い合う状態に順次積層してなることを特徴
    とする転写型光記録媒体
JP61141009A 1986-06-17 1986-06-17 転写型光記録媒体 Expired - Lifetime JPH0614414B2 (ja)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP61141009A JPH0614414B2 (ja) 1986-06-17 1986-06-17 転写型光記録媒体
CA000539823A CA1300264C (en) 1986-06-17 1987-06-16 Method of producing an optical recording card and transfer type optical recording medium
AT87305372T ATE82813T1 (de) 1986-06-17 1987-06-17 Verfahren zur herstellung einer karte mit optischer aufzeichnung und optisches aufzeichnungsmedium vom transfertyp.
EP87305372A EP0250227B1 (en) 1986-06-17 1987-06-17 Method of producing an optical recording card and transfer type optical recording medium
DE8787305372T DE3782769T2 (de) 1986-06-17 1987-06-17 Verfahren zur herstellung einer karte mit optischer aufzeichnung und optisches aufzeichnungsmedium vom transfertyp.
US07/397,609 US5156941A (en) 1986-06-17 1989-08-23 Method of producing an optical or magneto-optical recording card and transfer type optical or magneto-optical recording medium
US07/471,037 US5110707A (en) 1986-06-17 1990-01-26 Method of producing an optical or magneto-optical recording card and transfer type optical or magneto-optical recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61141009A JPH0614414B2 (ja) 1986-06-17 1986-06-17 転写型光記録媒体

Publications (2)

Publication Number Publication Date
JPS62298039A JPS62298039A (ja) 1987-12-25
JPH0614414B2 true JPH0614414B2 (ja) 1994-02-23

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
JP61141009A Expired - Lifetime JPH0614414B2 (ja) 1986-06-17 1986-06-17 転写型光記録媒体

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Country Link
US (1) US5110707A (ja)
EP (1) EP0250227B1 (ja)
JP (1) JPH0614414B2 (ja)
AT (1) ATE82813T1 (ja)
CA (1) CA1300264C (ja)
DE (1) DE3782769T2 (ja)

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CA1300264C (en) 1992-05-05
DE3782769D1 (de) 1993-01-07
US5110707A (en) 1992-05-05
EP0250227B1 (en) 1992-11-25
DE3782769T2 (de) 1993-04-29
ATE82813T1 (de) 1992-12-15
JPS62298039A (ja) 1987-12-25
EP0250227A2 (en) 1987-12-23
EP0250227A3 (en) 1989-07-26

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