JP4910630B2 - Information recording medium manufacturing method - Google Patents

Information recording medium manufacturing method Download PDF

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JP4910630B2
JP4910630B2 JP2006290921A JP2006290921A JP4910630B2 JP 4910630 B2 JP4910630 B2 JP 4910630B2 JP 2006290921 A JP2006290921 A JP 2006290921A JP 2006290921 A JP2006290921 A JP 2006290921A JP 4910630 B2 JP4910630 B2 JP 4910630B2
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直彰 新藤
則之 伊藤
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Toppan Inc
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Description

本発明は、情報記録媒体およびその製造に用いる保護層転写シートに関するものであり、特に、表面の文字、記号、柄等でなる印刷部や磁気情報が記録されている磁気記録部を有し、これら印刷部や磁気記録部が優れた耐久性を有する情報記録媒体およびその製造に用いる保護層転写シートに関する。   The present invention relates to an information recording medium and a protective layer transfer sheet used for manufacturing the information recording medium, and in particular, has a printing part composed of characters, symbols, patterns, etc. on the surface and a magnetic recording part on which magnetic information is recorded, The present invention relates to an information recording medium in which the printing section and the magnetic recording section have excellent durability and a protective layer transfer sheet used in the production thereof.

従来、情報記録媒体として、クレジットカードやキャシュカードに代表されるカード型の情報記録媒体が広く利用されている。これらは、一般的に白色の塩化ビニル樹脂をコア材として用いられ、この両面もしくは片面に、所定の磁気テープを所定位置に貼付した透明な塩化ビニル樹脂シートを重ねて加熱加圧プレスしたものを基材として用いたものである。欧州や米国では白色のコア材に印刷を施し、後に透明シートをプレスする構成をとっているが、日本国内では、これら諸外国と同様の構成のカードの他に、透明シートをプレス接着した後に、表面にデザイン等の絵柄印刷を施す構成のカードも使用されている。これは、日本国内のみで通用するＪＩＳ規格の磁気テープがカードのおもて面に付与されているためである。すなわち、諸外国ではカードのおもて面に磁気テープがないため、印刷はシートの内側でかまわないが、日本ではカードのおもて面にＪＩＳ規格磁気テープを使用し、磁気情報の記録消去を行う必要があるため、この磁気テープが基材の最表層付近になければならず、結果として透明シートの外側に磁気テープを設けることになる。したがって、デザイン上でこの磁気テープを隠蔽するための印刷を透明シートの外側に施すことになる。   Conventionally, card-type information recording media represented by credit cards and cash cards have been widely used as information recording media. In general, white vinyl chloride resin is used as a core material, and a transparent vinyl chloride resin sheet with a predetermined magnetic tape affixed to a predetermined position on both sides or one side is heated and pressed. Used as a base material. In Europe and the United States, the white core material is printed and then the transparent sheet is pressed, but in Japan, in addition to the cards with the same structure as those in other countries, the transparent sheet is pressed and bonded. In addition, cards having a structure in which a design or the like is printed on the surface are also used. This is because a JIS-standard magnetic tape that can be used only in Japan is applied to the front surface of the card. In other words, since there is no magnetic tape on the front side of the card in other countries, printing can be done inside the sheet, but in Japan, JIS standard magnetic tape is used on the front side of the card to record and erase magnetic information. This magnetic tape must be in the vicinity of the outermost surface layer of the substrate, and as a result, the magnetic tape is provided outside the transparent sheet. Therefore, printing for concealing the magnetic tape in design is performed on the outside of the transparent sheet.

この透明シートの外側に印刷を施すカードをオーバープリントカード（以下、ＯＰカード）と呼ぶことにする。   A card for printing on the outside of the transparent sheet is called an overprint card (hereinafter referred to as an OP card).

このＯＰカードの作成手順は次の通りである。すなわち白色塩化ビニルコアの両面に、あらかじめ所定位置に磁気テープを貼付した透明塩化ビニルシートを重ね、加熱加圧プレスしてカード基材を得る。その後、磁気テープを隠すための隠蔽層、デザインのための印刷層、印刷面を保護するための保護層が設けられ、表面を平らにするためのプレスを再度行ってカード形状に打ち抜き、必要に応じて設けられるホログラムの箔転写、サインパネル転写及びエンボス工程を経て、ＯＰカードとなる。その際、磁気テープの磁気情報の読み取りの問題で磁気テープ上に設けられる樹脂層の厚みは、隠蔽層、印刷層、保護層を含め１０μｍ程度であり、特に保護層は１〜４μｍ程度しか設けることができないという制限がある。   The procedure for creating this OP card is as follows. That is, a transparent vinyl chloride sheet having a magnetic tape affixed to a predetermined position in advance on both surfaces of a white vinyl chloride core is laminated and heated and pressed to obtain a card substrate. After that, a concealing layer for concealing the magnetic tape, a printing layer for design, and a protective layer for protecting the printing surface are provided, press again to flatten the surface, punched into a card shape, necessary An OP card is obtained through foil transfer, sign panel transfer, and embossing steps provided accordingly. At that time, the thickness of the resin layer provided on the magnetic tape due to the problem of reading magnetic information on the magnetic tape is about 10 μm including the concealing layer, the printing layer, and the protective layer, and in particular, the protective layer is provided only about 1 to 4 μm. There is a restriction that it cannot be done.

このように、印刷層が透明シートの内側にあって十分に保護されている諸外国のカードとは異なり、日本のＯＰカードの耐性は非常に薄い保護層のみによって保たれており、磁気情報の読み書き時における金属製の磁気ヘッドでの擦りに耐えうる必要がある。   In this way, unlike foreign cards where the printed layer is inside the transparent sheet and is well protected, the Japanese OP card's resistance is maintained only by a very thin protective layer, It must be able to withstand rubbing with a metal magnetic head during reading and writing.

この保護層を設ける方法としてはいくつか考えられ、従来はグラビア塗工系の方式とスクリーン印刷系の方式、さらにオフセット印刷系等の印刷方式であったが、近年では転写箔を用いて印刷層の上に保護層を設ける手法が提案されている。従来はアクリル樹脂を代表とする熱可塑性樹脂が用いられてきたが、十分な耐摩耗性が得られず、最近では紫外線あるいは放射線硬化樹脂やフッ素樹脂、シリコン樹脂を利用した熱硬化型樹脂を用いた保護層転写フィルムが提案されるようになってきた（例えば、特許文献１、２参照。）。   There are several methods for providing this protective layer. Conventionally, there have been gravure coating methods and screen printing methods, and printing methods such as offset printing systems. A method of providing a protective layer on the substrate has been proposed. Conventionally, thermoplastic resins typified by acrylic resins have been used, but sufficient wear resistance has not been achieved. Recently, thermosetting resins using ultraviolet or radiation curable resins, fluororesins, and silicon resins have been used. Protective layer transfer films have been proposed (see, for example, Patent Documents 1 and 2).

以下に、上記先行技術文献を示す。
特開平４−４２００号公報 特開２００５−３１９７０１号公報 The above prior art documents are shown below.
Japanese Patent Laid-Open No. 4-4200 JP 2005-319701 A

しかしながら、これらの樹脂系では、後加工であるエンボス加工により、例えば、店番号や口座番号等の識別情報が付与されるため、そのエンボス加工時の衝撃で隠蔽層、印刷層、保護層に亀裂が生じやすいという問題や、後加工にてクレジット会社固有のホログラムを転写接着させようとした際に、接着し難くなるという問題が発生する。このように、磁気情報の読み取り時における摩擦耐久性とエンボス加工時やホログラム加工時における耐衝撃性や接着性を同時に満足し得るものが切望されている。   However, in these resin systems, for example, identification information such as a shop number or account number is given by embossing that is post-processing, so that the concealing layer, the printing layer, and the protective layer are cracked by the impact during the embossing. There arises a problem that it is easy to occur, and a problem that it becomes difficult to adhere when a hologram unique to a credit company is transferred and adhered by post-processing. Thus, what can satisfy | fulfill the friction durability at the time of reading magnetic information and the impact resistance and adhesiveness at the time of embossing and hologram processing is desired.

本発明は、かかる従来技術の問題点を解決するものであり、その課題とするところは、磁気カードで代表される情報記録媒体において、磁気情報の読み取り時等における十分な摩擦耐久性を有し、エンボス加工やホログラム加工時における十分な耐衝撃性と接着性を有する情報記録媒体およびその製造に用いる保護層転写シートを提供することにあり、さらに詳しく説明すると、エンボス加工で亀裂を生じ易く、ホログラム転写加工で接着し難い電離放射線（紫外線等）硬化型樹脂や、フッ素系、シリコン系樹脂を用いずに、従来のアクリル樹脂タイプの保護層以上の耐摩耗性を付与する手法を提供することにある。   The present invention solves such problems of the prior art, and the problem is that an information recording medium represented by a magnetic card has sufficient friction durability when reading magnetic information. , To provide an information recording medium having sufficient impact resistance and adhesiveness during embossing and hologram processing, and to provide a protective layer transfer sheet used in the production thereof. Providing a technique that provides higher wear resistance than conventional acrylic resin-type protective layers without using ionizing radiation (ultraviolet rays, etc.) curable resins that are difficult to adhere by hologram transfer processing, fluorine-based, and silicon-based resins It is in.

本発明に於いて上記課題を達成するために、まず請求項１の発明では、文字、数字、絵柄等の印刷部や磁気情報の磁気記録部を有する情報記録媒体の製造方法において、前記印刷部や磁気記録部を覆うように保護層を設ける工程と、該保護層を構成する材料がＪＩＳＫ７１２５に準拠した摩擦係数試験方法による、滑り片を鉄としたとき、その動摩擦係数が０．４以下となる高分子材料を７０％以上含有させる工程と、当該保護層に対してワックス又はスリップ剤を添加する工程とを具備することを特徴とする情報記録媒体の製造方法としたものである。
In order to achieve the above object in the present invention, first, in the invention of claim 1, in the method of manufacturing an information recording medium having a printing unit for characters, numbers, pictures, etc. and a magnetic recording unit for magnetic information, the printing unit And a step of providing a protective layer so as to cover the magnetic recording portion, and when the material constituting the protective layer is a friction coefficient test method based on JISK7125, when the sliding piece is iron, the dynamic friction coefficient is 0.4 or less. a step of incorporating the polymeric material 70% or more comprising, in which the method of manufacturing an information recording medium characterized by comprising the step of adding the wax or slip agent to the protective layer.

また、請求項２の発明では、文字、数字、絵柄等の印刷部や磁気情報の磁気記録部を有する情報記録媒体の製造方法において、
透明ポリエチレンテレフタレートフィルムから成る支持体に、以下の組成の保護層をグラビア法にて塗布する工程、
前記保護層の前記支持体とは反対方向に接着層を設ける工程、を具備したことを特徴とする情報記録媒体の製造方法。
〔剥離性保護層〕
ポリカーボネート ５重量部
ポリエチレンＷＡＸ ０．１重量部
ＭＥＫ（メチルエチルケトン） ６４．９重量部
トルエン ３０重量部
〔接着層〕
塩化ビニル・酢酸ビニル共重合体 １５重量部
アクリル樹脂 ５重量部
酢酸エチル ５０重量部
酢酸ブチル ３０重量部としたものである。
Further, in the invention of claim 2, in the method of manufacturing an information recording medium having a printing part of characters, numbers, patterns, etc. and a magnetic recording part of magnetic information,
A step of applying a protective layer having the following composition to the support composed of a transparent polyethylene terephthalate film by a gravure method,
And a step of providing an adhesive layer in a direction opposite to the support of the protective layer.
(Peelable protective layer)
5 parts by weight of polycarbonate
Polyethylene WAX 0.1 parts by weight
MEK (methyl ethyl ketone) 64.9 parts by weight
30 parts by weight of toluene
(Adhesive layer)
15 parts by weight of vinyl chloride / vinyl acetate copolymer
5 parts by weight of acrylic resin
50 parts by weight of ethyl acetate
30 parts by weight of butyl acetate .

本発明は以上の構成であるから、下記に示す如き効果がある。   Since this invention is the above structure, there exist the following effects.

即ち、上記請求項１及び２に係る発明によれば、文字、数字、絵柄等の印刷部や磁気情報の磁気記録部を有する情報記録媒体において、前記印刷部や磁気記録部を覆うように保護層が設けられ、該保護層を構成する材料がＪＩＳＫ７１２５に準拠した摩擦係数試験方法による、滑り片を鉄としたとき、その動摩擦係数が０．４以下となる高分子材料を７０％以上含有していることによって、磁気記録部の情報の読み取り時等における十分な摩擦耐久性を有し、エンボス加工やホログラム加工時における十分な耐衝撃性と接着性を有する情報記録媒体の製造方法とすることができる。
That is, according to the first and second aspects of the present invention, in an information recording medium having a printing unit for characters, numbers, pictures, etc. and a magnetic recording unit for magnetic information, the printing unit and the magnetic recording unit are protected so as to cover them. When the sliding piece is made of iron according to a friction coefficient test method in accordance with JISK7125, the material constituting the protective layer contains 70% or more of a polymer material having a dynamic friction coefficient of 0.4 or less. Therefore, a method for producing an information recording medium having sufficient friction durability at the time of reading information in the magnetic recording portion and having sufficient impact resistance and adhesiveness at the time of embossing and hologram processing Can do.

以下本発明を実施するための最良の形態を図面を用いて詳細に説明する。   The best mode for carrying out the present invention will be described below in detail with reference to the drawings.

図１は、本発明の情報記録媒体の一実施の形態を示す断面図であり、図２は、図１に示した情報記録媒体を容易に製造可能とする保護転写シートの説明図である。   FIG. 1 is a cross-sectional view showing an embodiment of the information recording medium of the present invention, and FIG. 2 is an explanatory diagram of a protective transfer sheet that can easily manufacture the information recording medium shown in FIG.

本発明の情報記録媒体は、例えば、上記図１の断面図に示すように、少なくとも、基材１に隠蔽層３にて隠蔽された磁気テープ２や印刷情報部６等の情報記録部分を有し、これらを覆うように保護層４を設けてなることを特徴とする情報記録媒体２０である。   The information recording medium of the present invention has, for example, at least an information recording portion such as a magnetic tape 2 or a print information portion 6 concealed by a concealing layer 3 on a substrate 1 as shown in the cross-sectional view of FIG. The information recording medium 20 is characterized in that the protective layer 4 is provided so as to cover them.

上記保護層４は、カード等情報記録媒体２０の表面が機械的損傷や携帯時の擦り等の外部損傷、生活物質（酒、水等）に対する耐性を備え、特に磁気テープを保護するために優れた耐摩耗性が要求されていて、一般に使用されるアクリル系の樹脂は、ＪＩＳＫ７１２５に規定されている摩擦係数試験方法において、滑り片を鉄としたとき、その動摩擦係数が約０．５６であるが、この動摩擦係数が０．４０以下の高分子材料を用いることで優れた耐性が得られ、この保護層４を形成する高分子材料としては、例えば、ポリアリレート、ポリカーボネート、塩化ビニル、酢酸セルロース、ポリアミド等が挙げられる。これらの樹脂はグラビアコーティング、ホットメルトコーティング等の公知の各種コーティング法によって１〜５μｍ程度形成される。また、これらの樹脂にさらに耐摩耗性を付与すべく公知のワックスや滑剤、フィラー等を適宜添加することも可能である。   The surface of the information recording medium 20 such as a card is resistant to external damage such as mechanical damage and rubbing during carrying and life substances (alcohol, water, etc.), and is particularly excellent for protecting the magnetic tape. In general, an acrylic resin that requires wear resistance has a dynamic friction coefficient of about 0.56 when the sliding piece is made of iron in the friction coefficient test method specified in JIS K7125. However, excellent resistance is obtained by using a polymer material having a dynamic friction coefficient of 0.40 or less. Examples of the polymer material forming the protective layer 4 include polyarylate, polycarbonate, vinyl chloride, and cellulose acetate. And polyamide. These resins are formed to have a thickness of about 1 to 5 μm by various known coating methods such as gravure coating and hot melt coating. In addition, known waxes, lubricants, fillers, and the like can be added as appropriate to impart further wear resistance to these resins.

また、本発明の情報記録媒体の製造に用いる保護層転写シートは、例えば、図２の側断面図に示すように、支持体１１上に保護層４、接着層５が順に積層してなる保護層転写シート３０である。   Further, the protective layer transfer sheet used in the production of the information recording medium of the present invention is, for example, a protective layer in which a protective layer 4 and an adhesive layer 5 are sequentially laminated on a support 11 as shown in a side sectional view of FIG. This is a layer transfer sheet 30.

上記支持体１１としては、厚みが安定しており、かつ耐熱性の高いポリエチレンテレフタレート樹脂フィルムを用いるのが一般的であるが、これに限るものではなく、例えば、その他の材料として、ポリエチレンナフタレート樹脂フィルム、ポリイミド樹脂フィルム等が耐熱性の高いフィルムとして知られており、同様の目的で使用することが可能である。また、他のフィルム、例えば、ポリエチレン、ポリプロピレン、耐熱塩化ビニル等の材料でも、塗液の塗工条件、さらに言えば乾燥条件が許せば使用可能である。   As the support 11, it is common to use a polyethylene terephthalate resin film having a stable thickness and high heat resistance. However, the present invention is not limited to this. For example, polyethylene naphthalate may be used as another material. Resin films, polyimide resin films, and the like are known as films having high heat resistance, and can be used for the same purpose. In addition, other films such as polyethylene, polypropylene, heat-resistant vinyl chloride and the like can be used as long as coating conditions for the coating liquid, more specifically, drying conditions permit.

また、転写条件等により保護層４の剥離が困難である場合には、例えば図あに示すように、支持体１１側に別途従来既知の離形層７を設けても良く、剥離が軽すぎる場合には同様に従来既知の易接着処理を行って剥離を調整しても良い。また、転写層への影響が無い限りは、帯電防止処理やマット加工、エンボス処理等の加工も何ら問題は無い。   Further, when it is difficult to peel off the protective layer 4 due to transfer conditions or the like, for example, as shown in the figure, a conventionally known release layer 7 may be separately provided on the support 11 side, and peeling is too light. In such a case, the peeling may be adjusted by performing a conventionally known easy adhesion treatment. In addition, as long as there is no influence on the transfer layer, there is no problem with processing such as antistatic treatment, mat processing, and emboss processing.

また、保護層４としては、支持体１１から剥がれる層であり、さらに云えば、剥離した後は情報記録媒体２０の磁気テープ２や印刷情報部６上を覆うように形成されるものであり、上記情報記録媒体２０を構成している高分子材料が用いられ、例えば、ポリアリレート、ポリカーボネート、塩化ビニル、酢酸セルロース、ポリアミド等が挙げられ、これらの樹脂を支持体１１上にグラビアコーティング、ホットメルトコーティング等の公知の各種コーティング法によって１〜５μｍ程度形成される。また、これらの樹脂にさらに耐摩耗性を付与すべく公知のワックスや滑剤、あるいはフィラー等を適宜添加することも可能である。   Further, the protective layer 4 is a layer that is peeled off from the support 11, and more specifically, is formed so as to cover the magnetic tape 2 and the print information portion 6 of the information recording medium 20 after being peeled off. The polymer material constituting the information recording medium 20 is used, and examples thereof include polyarylate, polycarbonate, vinyl chloride, cellulose acetate, and polyamide. These resins are coated on the support 11 with gravure coating, hot melt, and the like. About 1 to 5 μm is formed by various known coating methods such as coating. In addition, known waxes, lubricants, fillers, and the like can be added as appropriate to impart further wear resistance to these resins.

また、接着層５としては、様々な情報記録媒体２０の基材１（例えば、紙・プラスチック）に接した状態で熱および圧力を与えられることにより、基材１に接着する機能を有する公知の感熱性接着材料が使用され、例えばアクリル系樹脂、ポリエステル系樹脂、エポキシ系樹脂、塩ビ・酢ビ共重合体等が挙げられるが、これらに限定されるものでなく公知の感熱性接着材料であれば適宜利用可能である。   Further, as the adhesive layer 5, a known adhesive layer 5 has a function of adhering to the base material 1 by being applied with heat and pressure while being in contact with the base material 1 (for example, paper / plastic) of various information recording media 20. A heat-sensitive adhesive material is used, and examples thereof include acrylic resins, polyester resins, epoxy resins, and vinyl chloride / vinyl acetate copolymers. However, the heat-sensitive adhesive materials are not limited to these and may be known heat-sensitive adhesive materials. Can be used as appropriate.

以上のように、一実施の形態としての事例を説明してきたが、意匠性を向上すべく各層を着色することや印刷を施した層を設ける等、使用の目的により適宜利用可能である。また、各層の接着性に鑑み、各層間に接着アンカー層を設けることも可能である。さらには、偽造防止効果を付与するために各層に外部刺激（紫外線、赤外線、等の１以上）を照射すると、発光する発光材料を適宜添加することや、これら材料を含有してなるインキで印刷層を設けることもでき、あるいは、保護層４と接着層５の間にホログラムや回折格子を形成すること、各種蒸着層を施すことも可能である。   As described above, the example as one embodiment has been described. However, it can be appropriately used depending on the purpose of use, such as coloring each layer or providing a printed layer in order to improve the design. In view of the adhesiveness of each layer, an adhesion anchor layer can be provided between the layers. Furthermore, in order to impart an anti-counterfeit effect, each layer is irradiated with an external stimulus (one or more of ultraviolet rays, infrared rays, etc.), and a light emitting material that emits light is appropriately added or printed with an ink containing these materials. It is also possible to provide a layer, or to form a hologram or a diffraction grating between the protective layer 4 and the adhesive layer 5, or to apply various vapor deposition layers.

以下に、本発明の具体的実施例について説明する。   Specific examples of the present invention will be described below.

＜実施例１＞
図１のように厚み２５μｍの透明ポリエチレンテレフタレート（ＰＥＴ）フィルムから成る支持体１１に、以下の組成の保護層４をグラビア法にて２μｍ塗布し、次いで、接着層５を１μｍ設け本発明の情報記録媒体を容易に製造する保護層転写シート１１を作製した。
〔剥離性保護層〕
ポリカーボネート ５重量部
ポリエチレンＷＡＸ ０．１重量部
ＭＥＫ（メチルエチルケトン） ６４．９重量部
トルエン ３０重量部
〔接着層〕
塩化ビニル・酢酸ビニル共重合体 １５重量部
アクリル樹脂 ５重量部
酢酸エチル ５０重量部
酢酸ブチル ３０重量部
以下に、本発明の比較例について説明する。 <Example 1>
As shown in FIG. 1, a protective layer 4 having the following composition is applied to a support 11 made of a transparent polyethylene terephthalate (PET) film having a thickness of 25 μm by a gravure method, and then an adhesive layer 5 is provided by 1 μm. A protective layer transfer sheet 11 for easily producing a recording medium was produced.
(Peelable protective layer)
Polycarbonate 5 parts by weight Polyethylene WAX 0.1 part by weight MEK (methyl ethyl ketone) 64.9 parts by weight Toluene 30 parts by weight [adhesive layer]
Vinyl chloride / vinyl acetate copolymer 15 parts by weight Acrylic resin 5 parts by weight Ethyl acetate 50 parts by weight Butyl acetate 30 parts by weight The following describes a comparative example of the present invention.

＜比較例１＞
実施例１の手法を用いて下記の組成から成る従来のアクリル樹脂から成る保護層４を設け、その他の層の材料および塗布方法は実施例１と同一の材料・手法を用いた。
〔剥離性保護層〕
アクリル樹脂 １５重量部
ポリエチレンＷＡＸ ０．３重量部
ＭＥＫ（メチルエチルケトン） ５４．７重量部
トルエン ３０重量部
以上、得られた転写箔を厚さ０．８ｍｍの磁気テープを設けた塩化ビニル製カード（基材）に熱ロールを用いて圧着・接着させた後、支持体１となるＰＥＴフィルムをはがして、情報記録媒体を作製した。 <Comparative Example 1>
A protective layer 4 made of a conventional acrylic resin having the following composition was provided using the method of Example 1, and the same materials and methods as in Example 1 were used for the materials and application methods of the other layers.
(Peelable protective layer)
Acrylic resin 15 parts by weight Polyethylene WAX 0.3 part by weight MEK (methyl ethyl ketone) 54.7 parts by weight Toluene 30 parts by weight The above-mentioned transfer foil was made of a vinyl chloride card (based on a 0.8 mm thick magnetic tape) Then, the PET film used as the support 1 was peeled off to produce an information recording medium.

これら実施例１と比較例１のサンプルを磁気読み取り機に搬送させ、読み取りを複数回行い、その耐性を確認した。その結果を下記表１に示した。   The samples of Example 1 and Comparative Example 1 were conveyed to a magnetic reader, and reading was performed a plurality of times to confirm their resistance. The results are shown in Table 1 below.

Figure 0004910630
上記表１により、比較例１では５０００回の読み取りは不可能であったが、実施例では１００００回以上の読み取りが可能であった。
Figure 0004910630
 According to Table 1, 5000 readings were impossible in Comparative Example 1, but 10,000 readings or more were possible in the Examples.

以上のように、本発明は、電離放射線硬化型の樹脂を用いなくとも、従来のアクリル系樹脂を用いた剥離性保護層より十分に優れた耐磨耗性を有する転写シートを得ることが可能であり、かつ、これを用いて本発明の情報記録媒体を容易に作製可能となる。   As described above, according to the present invention, it is possible to obtain a transfer sheet having abrasion resistance sufficiently superior to a peelable protective layer using a conventional acrylic resin without using an ionizing radiation curable resin. In addition, the information recording medium of the present invention can be easily produced using this.

本発明の情報記録媒体の一実施の形態を側断面で表した説明図である。It is explanatory drawing which represented one Embodiment of the information recording medium of this invention with the side cross section. 本発明の情報記録媒体の製造に用いる保護層転写シートの一実施の形態を側断面で表した説明図である。It is explanatory drawing which represented one Embodiment of the protective layer transfer sheet used for manufacture of the information recording medium of this invention with the side cross section. 本発明の情報記録媒体の他の一実施の形態を側断面で表した説明図である。It is explanatory drawing showing other embodiment of the information recording medium of this invention by the side cross section.

符号の説明Explanation of symbols

１‥‥基材
２‥‥磁気テープ
３‥‥隠蔽層
４‥‥保護層
５‥‥接着層
６‥‥印刷情報部
７‥‥離形層
１１‥‥支持体
２０‥‥情報記録媒体
３０‥‥保護層転写シート DESCRIPTION OF SYMBOLS 1 ... Base material 2 ... Magnetic tape 3 ... Concealing layer 4 ... Protective layer 5 ... Adhesive layer 6 ... Printing information part 7 ... Release layer 11 ... Support 20 ... Information recording medium 30 ... ...... Protective layer transfer sheet

Claims (2)

文字、数字、絵柄等の印刷部や磁気情報の磁気記録部を有する情報記録媒体の製造方法において、前記印刷部や磁気記録部を覆うように保護層を設ける工程と、該保護層を構成する材料がＪＩＳＫ７１２５に準拠した摩擦係数試験方法による、滑り片を鉄としたとき、その動摩擦係数が０．４以下となる高分子材料を７０％以上含有させる工程と、当該保護層に対してワックス又はスリップ剤を添加する工程とを具備することを特徴とする情報記録媒体の製造方法。 In a method of manufacturing an information recording medium having a printing part for characters, numbers, pictures, etc. and a magnetic recording part for magnetic information, a step of providing a protective layer so as to cover the printing part and the magnetic recording part, and constituting the protective layer When the sliding piece is made of iron according to a friction coefficient test method based on JISK7125, a step of containing 70% or more of a polymer material having a dynamic friction coefficient of 0.4 or less, and a wax or method of manufacturing an information recording medium characterized by comprising the step of adding a slip agent. 文字、数字、絵柄等の印刷部や磁気情報の磁気記録部を有する情報記録媒体の製造方法において、In a method of manufacturing an information recording medium having a printing part of characters, numbers, pictures, etc. and a magnetic recording part of magnetic information,
透明ポリエチレンテレフタレートフィルムから成る支持体に、以下の組成の保護層をグラビア法にて塗布する工程、A step of applying a protective layer having the following composition to the support composed of a transparent polyethylene terephthalate film by a gravure method,
前記保護層の前記支持体とは反対方向に接着層を設ける工程、を具備したことを特徴とする情報記録媒体の製造方法。And a step of providing an adhesive layer in a direction opposite to the support of the protective layer.
〔剥離性保護層〕(Peelable protective layer)
ポリカーボネート ５重量部  5 parts by weight of polycarbonate
ポリエチレンＷＡＸ ０．１重量部  Polyethylene WAX 0.1 parts by weight
ＭＥＫ（メチルエチルケトン） ６４．９重量部  MEK (methyl ethyl ketone) 64.9 parts by weight
トルエン ３０重量部  30 parts by weight of toluene
〔接着層〕(Adhesive layer)
塩化ビニル・酢酸ビニル共重合体 １５重量部  15 parts by weight of vinyl chloride / vinyl acetate copolymer
アクリル樹脂 ５重量部  5 parts by weight of acrylic resin
酢酸エチル ５０重量部  50 parts by weight of ethyl acetate
酢酸ブチル ３０重量部  30 parts by weight of butyl acetate
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