JPH10283631A - Transfer type magnetic recording medium and its production - Google Patents
Transfer type magnetic recording medium and its productionInfo
- Publication number
- JPH10283631A JPH10283631A JP8903197A JP8903197A JPH10283631A JP H10283631 A JPH10283631 A JP H10283631A JP 8903197 A JP8903197 A JP 8903197A JP 8903197 A JP8903197 A JP 8903197A JP H10283631 A JPH10283631 A JP H10283631A
- Authority
- JP
- Japan
- Prior art keywords
- adhesive layer
- layer
- magnetic
- recording medium
- magnetic recording
- 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.)
- Granted
Links
Landscapes
- Magnetic Record Carriers (AREA)
- Manufacturing Of Magnetic Record Carriers (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、転写型磁気記録媒
体に関するものであり、特に、磁気ストライプ付き磁気
カードに用いるのに適した転写型磁気記録媒体およびそ
の製造方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transfer type magnetic recording medium, and more particularly to a transfer type magnetic recording medium suitable for use in a magnetic card with a magnetic stripe and a method of manufacturing the same.
【０００２】[0002]
【従来の技術】今日、クレジットカード、キャッシュカ
ードに代表される磁気ストライプ付き磁気カードは、広
く日常的に普及しており、磁気ストライプ上に絵柄や文
字等を印刷した磁気カードも多くみられるようになっ
た。このような磁気カードの製造方法としては、先ず、
磁気カードの基体となる支持体シート上の所定の位置に
テープ状の転写型磁気記録媒体を転写または貼り合わせ
て加熱接着し、このテープ状転写型磁気記録媒体の基体
を剥離し、支持体シート上に磁気ストライプを形成す
る。次に、磁気ストライプが支持体シートの表面上に面
一となるようにプレス加工を行い磁気ストライプ付きシ
ートを作製する。この磁気ストライプ付きシートの表面
に指定の絵柄、文字等を印刷した後、カード形状に打ち
抜くことにより作られる。2. Description of the Related Art Today, magnetic cards with magnetic stripes, such as credit cards and cash cards, have become widespread on a daily basis, and there are many magnetic cards on which patterns, characters, etc. are printed on magnetic stripes. Became. As a method of manufacturing such a magnetic card, first,
A tape-shaped transfer type magnetic recording medium is transferred or bonded to a predetermined position on a support sheet serving as a base of a magnetic card and heated and adhered, and the base of the tape-shaped transfer type magnetic recording medium is peeled off. A magnetic stripe is formed thereon. Next, the magnetic stripe is pressed so as to be flush with the surface of the support sheet to produce a sheet with a magnetic stripe. It is made by printing a designated picture, character, or the like on the surface of the sheet with the magnetic stripe, and then punching it into a card shape.
【０００３】一般に、磁気ストライプは、磁性層と接着
層よりなり、磁気ストライプ上の絵柄や文字等の印刷
は、スクリーン印刷法で直接、磁性層上に形成される。
このため、磁性層は、スクリーンインキに含まれる有機
溶剤、可塑剤などに対し十分に耐え得るものでなくては
ならず、熱硬化型の磁性層にする必要がある。In general, a magnetic stripe is composed of a magnetic layer and an adhesive layer, and a pattern, a character, or the like on the magnetic stripe is printed directly on the magnetic layer by a screen printing method.
For this reason, the magnetic layer must be sufficiently resistant to the organic solvent, plasticizer, and the like contained in the screen ink, and must be a thermosetting magnetic layer.
【０００４】[0004]
【発明が解決しようとする課題】従来の熱硬化型磁性層
を有する転写型磁気記録媒体の製造方法としては、ロー
ル状に巻かれた基体上にコーティングマシーンで剥離
層、磁性層を順次形成した後、ロール状のまま一旦熱硬
化処理を行なう。この熱硬化処理には２日から１週間程
度を必要とし、その後、また、コーティングマシーンを
用いて接着層を形成する。このように、従来の熱硬化型
磁性層を有する転写型磁気記録媒体の製造方法では、剥
離層、磁性層のコーティングと、接着層のコーティング
とに、コーティングマシーンのランニングを２回に分け
て行っていたので、それだけランニングコストが高くな
り、それによって製造された転写型磁気記録媒体も比較
的に高価なものとなっていた。As a conventional method of manufacturing a transfer type magnetic recording medium having a thermosetting magnetic layer, a release layer and a magnetic layer are sequentially formed by a coating machine on a roll-wound substrate. Thereafter, a thermosetting treatment is once performed in a roll form. This heat-curing treatment requires about two days to one week, and thereafter, an adhesive layer is formed again using a coating machine. As described above, in the conventional method of manufacturing a transfer type magnetic recording medium having a thermosetting magnetic layer, the running of the coating machine is performed twice for the coating of the release layer, the coating of the magnetic layer, and the coating of the adhesive layer. As a result, the running cost has increased accordingly, and the transfer-type magnetic recording medium manufactured thereby has also become relatively expensive.
【０００５】もし、１回のコーティングマシーンのラン
ニングで、剥離層、磁性層、接着層を同時に一括形成で
きれば、ランニングコストが低減でき、安価な転写型磁
気記録媒体を提供することができると考えられる。しか
し、接着層を形成した後にロール状にして、熱硬化型の
磁性層の熱硬化処理をすると、長時間の熱硬化処理中に
接着層と基体とがブロッキングしてしまう。これを防ぐ
ため、接着層の耐熱性を高めると、磁気カード製造時の
転写、張り合わせ温度が高くなり、支持体シートに変形
が生じてしまう。一方、磁性層を熱可塑性にし、熱硬化
処理を省略した場合、上述のようにスクリーン印刷時に
磁性層が溶解または膨潤し、磁気記録性能が劣化してし
まう。また、磁性層の変形にともない印刷した絵柄や文
字も変形してしまう。[0005] If the release layer, the magnetic layer, and the adhesive layer can be simultaneously formed simultaneously by a single running of the coating machine, it is considered that the running cost can be reduced and an inexpensive transfer type magnetic recording medium can be provided. . However, if the thermosetting magnetic layer is subjected to thermosetting treatment after being formed into a roll after the formation of the adhesive layer, the adhesive layer and the substrate are blocked during the long-time thermosetting treatment. In order to prevent this, if the heat resistance of the adhesive layer is increased, the transfer and bonding temperature during the production of the magnetic card increases, and the support sheet is deformed. On the other hand, when the magnetic layer is made thermoplastic and the thermosetting treatment is omitted, the magnetic layer dissolves or swells at the time of screen printing as described above, and the magnetic recording performance deteriorates. In addition, printed patterns and characters are also deformed as the magnetic layer is deformed.
【０００６】本発明の目的は、前述したような問題点を
生ずることなく、安価な転写型磁気記録媒体を提供する
ことであり、また、その製造方法を提供することであ
る。An object of the present invention is to provide an inexpensive transfer type magnetic recording medium without causing the above-mentioned problems, and to provide a method of manufacturing the same.
【０００７】[0007]
【課題を解決するための手段】本発明の一つの特徴によ
れば、基体上に少なくとも剥離層、磁性層、接着層を重
ねて有する転写型磁気記録媒体において、前記接着層中
に、該接着層の有効厚み以上の粒子径を有する微粒の樹
脂ビーズを含有する。According to one feature of the present invention, in a transfer type magnetic recording medium having at least a release layer, a magnetic layer, and an adhesive layer superposed on a substrate, the adhesive It contains fine resin beads having a particle size greater than the effective thickness of the layer.
【０００８】本発明の一つの実施の形態によれば、前記
樹脂ビーズの粒子径は、前記磁性層の厚み以下である。[0008] According to one embodiment of the present invention, the particle size of the resin beads is equal to or less than the thickness of the magnetic layer.
【０００９】本発明の別の実施の形態によれば、前記樹
脂ビーズの粒子径は、0.５μｍ以上、２０μｍ以下であ
る。[0009] According to another embodiment of the present invention, the particle size of the resin beads is 0.5 μm or more and 20 μm or less.
【００１０】本発明のさらに別の実施の形態によれば、
前記磁性層は、熱硬化型であり、前記接着層は、低温で
加熱接着可能なものである。According to yet another embodiment of the present invention,
The magnetic layer is a thermosetting type, and the adhesive layer is heat-bondable at a low temperature.
【００１１】本発明のさらに別の実施の形態によれば、
前記樹脂ビーズは、表面活性が低いものである。According to yet another embodiment of the present invention,
The resin beads have low surface activity.
【００１２】本発明のもう一つの特徴によれば、基体上
に少なくとも剥離層、磁性層、接着層を重ねて有する転
写型磁気記録媒体を製造する方法において、前記基体と
してロール状原反を用い、該原反上に前記剥離層、磁性
層、接着層を１回のコーティングマシーンのランニング
で同時に一括形成し、ロール状に巻き取る工程を含み、
前記磁性層は、熱硬化型であり、前記接着層は、該接着
層の有効厚み以上の粒子径を有する微粒の樹脂ビーズを
含有してなるものであり、さらに、前記ロール状に巻き
取ったロール状磁気積層物の状態において熱硬化処理を
行なう工程を含む。According to another feature of the present invention, in a method of manufacturing a transfer type magnetic recording medium having at least a release layer, a magnetic layer, and an adhesive layer superposed on a substrate, a roll-shaped material is used as the substrate. Including a step of simultaneously forming the release layer, the magnetic layer, and the adhesive layer on the raw material in one batch by running the coating machine, and winding the roll into a roll.
The magnetic layer is a thermosetting type, and the adhesive layer contains fine resin beads having a particle diameter equal to or greater than the effective thickness of the adhesive layer, and is further wound into the roll shape. Performing a thermosetting treatment in the state of the rolled magnetic laminate.
【００１３】[0013]
【作用】接着層の有効厚み以上の粒径の樹脂ビーズを用
いることにより、樹脂ビーズが接着層の有効厚みに対し
凸部として形成され、基体と接着層とのブロッキングを
生ずることなくロール状で熱硬化処理することが可能と
なり、したがって、１回のコーティングマシーンのラン
ニングで剥離層、磁性層、接着層を同時に一括形成で
き、接着層の耐熱性を上げることなく、熱硬化型磁性層
を有する安価な転写型磁気記録媒体を提供することがで
きる。By using resin beads having a particle size larger than the effective thickness of the adhesive layer, the resin beads are formed as projections with respect to the effective thickness of the adhesive layer, and are formed in a roll without blocking between the base and the adhesive layer. The thermosetting treatment can be performed, so that the release layer, the magnetic layer, and the adhesive layer can be simultaneously formed simultaneously by one running of the coating machine, and the thermosetting magnetic layer is provided without increasing the heat resistance of the adhesive layer. An inexpensive transfer type magnetic recording medium can be provided.
【００１４】[0014]
【発明の実施の形態】次に、添付図面に基づいて、本発
明の実施の形態について、本発明をより詳細に説明す
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described in more detail with reference to the accompanying drawings.
【００１５】図１は、本発明の一実施例としての転写型
磁気記録媒体の拡大断面図である。図１に示されるよう
に、この実施例の転写型磁気記録媒体は、基体１上に、
剥離層２、磁性層３、接着層４が順次積層されてなって
いる。接着層４には、本発明により、この接着層４の有
効厚みｔ以上の粒径を有する樹脂ビーズ５が含有させら
れている。FIG. 1 is an enlarged sectional view of a transfer type magnetic recording medium as one embodiment of the present invention. As shown in FIG. 1, the transfer type magnetic recording medium of this embodiment is
The release layer 2, the magnetic layer 3, and the adhesive layer 4 are sequentially laminated. According to the present invention, the adhesive layer 4 contains resin beads 5 having a particle size equal to or more than the effective thickness t of the adhesive layer 4.
【００１６】本発明の転写型磁気シートの基体１は、プ
ラスチック、紙、金属板等、特に制約はないが、耐熱
性、使い易さから、プラスチックの中でも、ポリエチレ
ンテレフタレートが好ましい。The substrate 1 of the transfer type magnetic sheet of the present invention is not particularly limited, such as plastic, paper, and metal plate, but polyethylene terephthalate is preferred among plastics from the viewpoint of heat resistance and ease of use.
【００１７】剥離層２は、シリコーン樹脂、セルロース
誘導体の繊維素系樹脂、ポリビニルブチラール樹脂、ポ
リメタクリレートおよびその共重合体等を必要に応じシ
リコーンオイル、ワックス、さらにシリカ等と溶剤中に
溶解、混合した塗料を作製し、適当な剥離強度が得られ
る厚みで塗布する。The release layer 2 is prepared by dissolving and mixing a silicone resin, a cellulose derivative cellulose-based resin, a polyvinyl butyral resin, a polymethacrylate and a copolymer thereof with a silicone oil, a wax, and further a silica, if necessary, in a solvent. Is prepared and applied to a thickness that provides an appropriate peel strength.
【００１８】磁性層３は、熱硬化型であり、γ−Ｆｅ2
Ｏ3 、Ｃｏ被着γ−Ｆｅ2 Ｏ3 、Ｂａフェライト、ＳＲ
フェライト等通常の磁気記録に用いられる磁性粉を結合
剤、硬化剤、その他添加剤と溶剤中で均一混合した磁性
塗料を作製し、適当な磁気記録性能が得られる厚みに塗
布する。ただし、磁性層３は、２０μｍ以下でないと、
磁気記録性能の劣化、特に、分解能が低くなってしま
う。結合剤は、ポリウレタン樹脂、塩化ビニル−酢酸ビ
ニル共重合体、ポリエステル樹脂、エポキシ樹脂、アク
リル樹脂、フェノール樹脂等でよく、硬化剤は、イソシ
アネート系硬化剤、エポキシ系硬化剤等、従来より公知
のものであってよい。The magnetic layer 3 is of a thermosetting type and has a γ-Fe 2
O 3 , Co-coated γ-Fe 2 O 3 , Ba ferrite, SR
A magnetic coating material is prepared by uniformly mixing a magnetic powder such as ferrite used for normal magnetic recording with a binder, a curing agent, and other additives in a solvent, and is applied to a thickness capable of obtaining appropriate magnetic recording performance. However, unless the magnetic layer 3 is 20 μm or less,
The magnetic recording performance is degraded, especially the resolution is lowered. The binder may be a polyurethane resin, a vinyl chloride-vinyl acetate copolymer, a polyester resin, an epoxy resin, an acrylic resin, a phenol resin, or the like, and the curing agent is a conventionally known isocyanate-based curing agent, epoxy-based curing agent, or the like. May be something.
【００１９】接着層４は、塩化ビニル−酢酸ビニル−ビ
ニルアルコール共重合体、ポリ酢酸ビニル樹脂、ポリア
ミド樹脂、ポリウレタン樹脂、ポリエステル樹脂等の加
熱接着可能な樹脂と、樹脂ビーズ５と、その他添加剤を
溶剤中に均一に混合した塗料を調製し、適当な接着力が
得られる厚みに塗布する。ただし、加熱接着時の接着力
を安定にするには、樹脂ビーズ５を除く接着層４の有効
厚みは、0.５μｍ以上必要である。The adhesive layer 4 is made of a heat-bondable resin such as vinyl chloride-vinyl acetate-vinyl alcohol copolymer, polyvinyl acetate resin, polyamide resin, polyurethane resin, polyester resin, resin beads 5, and other additives. Is uniformly mixed in a solvent to prepare a coating material, which is applied to a thickness capable of obtaining an appropriate adhesive strength. However, the effective thickness of the adhesive layer 4 excluding the resin beads 5 needs to be 0.5 μm or more in order to stabilize the adhesive force at the time of heat bonding.
【００２０】本発明によって接着層４に含有させる樹脂
ビーズ５には、四フッ化エチレン樹脂、シリコーン樹
脂、ポリエチレン樹脂、ポリプロピレン樹脂、ポリカー
ボネート樹脂、エチレン−酢酸ビニル共重合体、アクリ
ル−スチレン共重合体、ベンゾグアナミン−ホルムアル
デヒド縮合物、メラミン−ホルムアルデヒド縮合物、ナ
イロン等の微粒子が用いられ、特に、四フッ化エチレン
樹脂、シリコーン樹脂等の表面活性が低い樹脂ビーズが
好ましい。The resin beads 5 contained in the adhesive layer 4 according to the present invention include ethylene tetrafluoride resin, silicone resin, polyethylene resin, polypropylene resin, polycarbonate resin, ethylene-vinyl acetate copolymer, acryl-styrene copolymer Fine particles such as benzoguanamine-formaldehyde condensate, melamine-formaldehyde condensate, and nylon are used, and resin beads having low surface activity such as ethylene tetrafluoride resin and silicone resin are particularly preferable.
【００２１】接着層４は、ロール状での熱硬化処理中に
基体１に対してブロッキングせず、磁気カード製造時の
転写、張り合わせにより支持体シートが変形しない加熱
接着温度で安定に接着する必要がある。これを解決する
には、接着層４中に微粒の樹脂ビーズ５を含有させ、樹
脂ビーズ５の粒径は、接着層４の有効厚みｔ以上、磁性
層３の膜厚以下にする。後述する比較例２の如く、接着
層４の有効厚みｔ以下の粒径の樹脂ビーズを用いると、
樹脂ビーズは接着剤中に埋もれてしまい、ロール状に巻
き取ったとき、基体１と接着剤が直接接触し、ロール状
での熱硬化処理中にブロッキングしてしまう。前述した
ように、接着層４の有効厚みｔ以上の粒径の樹脂ビーズ
５を用いることにより、樹脂ビーズ５が接着層４の有効
厚みｔに対して凸部として形成され、ロール状に巻き取
ったとき基体１と接着剤が直接接触することを防ぎ、低
温で加熱接着可能な接着層をロール状で熱硬化処理する
ことが可能になる。また、後述する比較例３の如く、樹
脂ビーズの粒径が大きすぎると、磁気カードにした後の
磁気記録性能、特に、再生出力のレベル変動が悪く、読
み取りエラーになってしまう。ある程度の大きさまで
は、磁気カードの支持体に埋め込まれるため、磁気記録
性能に悪影響を及ぼさない大きさは、実験で確認したと
ころ、磁性層の厚み以下の粒径であることがわかった。
したがって、樹脂ビーズ５の粒子径は、0.５μｍ以上、
２０μｍ以下であることが好ましい。The adhesive layer 4 does not block the substrate 1 during the thermosetting treatment in the form of a roll, and must be stably bonded at a heating bonding temperature at which the support sheet is not deformed by transfer and lamination during the production of the magnetic card. There is. In order to solve this, fine resin beads 5 are contained in the adhesive layer 4, and the particle size of the resin beads 5 is equal to or more than the effective thickness t of the adhesive layer 4 and equal to or less than the thickness of the magnetic layer 3. When resin beads having a particle size equal to or less than the effective thickness t of the adhesive layer 4 are used as in Comparative Example 2 described below,
The resin beads are buried in the adhesive, and when wound into a roll, the substrate 1 and the adhesive come into direct contact and are blocked during the thermosetting treatment in the roll. As described above, by using the resin beads 5 having a particle size equal to or larger than the effective thickness t of the adhesive layer 4, the resin beads 5 are formed as projections with respect to the effective thickness t of the adhesive layer 4, and are wound into a roll. In this case, it is possible to prevent the substrate 1 from being in direct contact with the adhesive, and to perform a thermosetting treatment in a roll form on the adhesive layer that can be heated and bonded at a low temperature. If the particle size of the resin beads is too large, as in Comparative Example 3 described below, the magnetic recording performance after forming the magnetic card, particularly the level of the reproduction output is poor, resulting in a reading error. Experiments have shown that a certain size, which is embedded in the support of the magnetic card and does not adversely affect the magnetic recording performance, has a particle size smaller than the thickness of the magnetic layer.
Therefore, the particle size of the resin beads 5 is 0.5 μm or more,
Preferably it is 20 μm or less.
【００２２】なお、図１に示した実施例の転写型磁気記
録媒体では、剥離層２の上に直接に磁性層３を重ねてい
るのであるが、剥離層２と磁性層３との間に保護層、蒸
着層、隠蔽層、着色層等を設けたような転写型磁気記録
媒体に本発明を適用しても、本発明の効果を得ることが
できる。In the transfer type magnetic recording medium of the embodiment shown in FIG. 1, the magnetic layer 3 is directly overlaid on the release layer 2, but between the release layer 2 and the magnetic layer 3. The effects of the present invention can be obtained even when the present invention is applied to a transfer type magnetic recording medium provided with a protective layer, a vapor deposition layer, a concealing layer, a coloring layer, and the like.
【００２３】本発明の効果を確認するために、次のよう
な、本発明による実施例１、および比較例１、２、３お
よび４の転写型磁気記録媒体を作製して、種々実験して
みた結果について、以下説明する。In order to confirm the effect of the present invention, the following transfer type magnetic recording media of Example 1 and Comparative Examples 1, 2, 3 and 4 according to the present invention were manufactured and subjected to various experiments. The result will be described below.
【００２４】（実施例１）基体１として厚み２２μｍの
ポリエチレンテレフタレートを幅１ｍ、長さ２０００ｍ
のロール状原反として用いた。この原反上に下記組成の
剥離層２、磁性層３、接着層４をそれぞれ厚み１μｍ、
１５μｍ、有効厚みが２μｍ未満となるよう、１回のコ
ーティングマシーンのランニングで同時に一括形成し、
ロール状に巻き取り、熱硬化処理した。硬化条件は、７
０°Ｃ、７２時間とした。これにより、ロール状磁気積
層物としての転写型磁気記録媒体を作製した。(Example 1) Polyethylene terephthalate having a thickness of 22 μm was used as the substrate 1 with a width of 1 m and a length of 2000 m.
Was used as a roll material. On this raw material, a release layer 2, a magnetic layer 3, and an adhesive layer 4 having the following compositions were each 1 μm thick.
15 μm, the effective thickness is less than 2 μm, the batch formation is performed simultaneously by one coating machine running,
It was wound into a roll and heat-cured. The curing conditions are 7
The temperature was 0 ° C. for 72 hours. Thus, a transfer type magnetic recording medium as a roll-shaped magnetic laminate was produced.
【００２５】 剥離層組成 シリコーン樹脂Ａ（信越化学工業社製 ＫＳ７０７） ５（重量部） シリコーン樹脂Ｂ（信越化学工業社製 ＫＳ７７０Ａ） ５ メチルエチルケトン ４５ トルエン ４５Composition of release layer Silicone resin A (KS707 manufactured by Shin-Etsu Chemical Co., Ltd.) 5 (parts by weight) Silicone resin B (KS770A manufactured by Shin-Etsu Chemical Co., Ltd.) 5 Methyl ethyl ketone 45 Toluene 45
【００２６】 磁性層組成 磁性粉（戸田工業社製 ＣＴＸ−８６０） ５０（重量部） リン酸エステル系界面活性剤 １ 塩化ビニル−酢酸ビニル−ビニルアルコール共重合体 ４ （積水化学社製 エスレックＡ） ウレタン樹脂 ６ （日本ポリウレタン工業社製 ニッポラン２３０４） イソシアネート化合物 ３ （日本ポリウレタン工業社製 コロネートＬ） メチルエチルケトン ３６Composition of magnetic layer Magnetic powder (CTX-860, manufactured by Toda Kogyo Co., Ltd.) 50 (parts by weight) Phosphate ester surfactant 1 Vinyl chloride-vinyl acetate-vinyl alcohol copolymer 4 (Essrec A, manufactured by Sekisui Chemical Co., Ltd.) Urethane resin 6 (Nipporan 2304 manufactured by Nippon Polyurethane Industry Co., Ltd.) Isocyanate compound 3 (Coronate L manufactured by Nippon Polyurethane Industry Co., Ltd.) Methyl ethyl ketone 36
【００２７】 接着層組成 塩化ビニル−プロピオン酸ビニル共重合体 ２５（重量部） （東ソー株式会社製 リューロンＱＣ６４０） 樹脂ビーズ 2.５ （シリコーン樹脂 粒子径２μｍ） メチルエチルケトン ７2.５Adhesive layer composition Vinyl chloride-vinyl propionate copolymer 25 (parts by weight) (Ryuron QC640 manufactured by Tosoh Corporation) Resin beads 2.5 (Silicone resin particle diameter 2 μm) Methyl ethyl ketone 72.5
【００２８】（比較例１）実施例１と同様の方法で、接
着層を下記組成に変えて、樹脂ビーズを含まない接着層
を作製した。 接着層組成 塩化ビニル−プロピオン酸ビニル共重合体 ２５（重量部） （東ソー株式会社製 リューロンＱＣ６４０） メチルエチルケトン ７５Comparative Example 1 An adhesive layer containing no resin beads was produced in the same manner as in Example 1 except that the adhesive layer was changed to the following composition. Adhesive layer composition Vinyl chloride-vinyl propionate copolymer 25 (parts by weight) (Ryuron QC640 manufactured by Tosoh Corporation) Methyl ethyl ketone 75
【００２９】（比較例２）実施例１と同様の方法で、接
着層を下記組成に変えて、樹脂ビーズの粒径が接着層の
有効厚み以下の接着層を作製した。 接着層組成 塩化ビニル−プロピオン酸ビニル共重合体 ２５（重量部） （東ソー株式会社製 リューロンＱＣ６４０） 樹脂ビーズ 2.５ （シリコーン樹脂 粒子径0.５μｍ） メチルエチルケトン ７2.５(Comparative Example 2) In the same manner as in Example 1, the adhesive layer was changed to the following composition, and an adhesive layer having a resin bead having a particle size equal to or less than the effective thickness of the adhesive layer was produced. Adhesive layer composition Vinyl chloride-vinyl propionate copolymer 25 (parts by weight) (Ryuron QC640 manufactured by Tosoh Corporation) Resin beads 2.5 (silicone resin particle diameter 0.5 μm) Methyl ethyl ketone 72.5
【００３０】（比較例３）実施例１と同様の方法で、接
着層を下記組成に変えて、樹脂ビーズの粒径を磁性層の
膜厚以上の接着層を作製した。 接着層組成 塩化ビニル−プロピオン酸ビニル共重合体 ２５（重量部） （東ソー株式会社製 リューロンＱＣ６４０） 樹脂ビーズ 2.５ （架橋型ポリスチレン樹脂 粒子径２５μｍ） メチルエチルケトン ７2.５Comparative Example 3 In the same manner as in Example 1, the adhesive layer was changed to the following composition, and an adhesive layer in which the particle size of the resin beads was larger than the thickness of the magnetic layer was produced. Adhesive layer composition Vinyl chloride-vinyl propionate copolymer 25 (parts by weight) (Ryuron QC640 manufactured by Tosoh Corporation) Resin beads 2.5 (Cross-linked polystyrene resin particle diameter 25 μm) Methyl ethyl ketone 72.5
【００３１】（比較例４）実施例１と同様の方法で、磁
性層を下記組成に変えて、熱可塑型磁性層を作製した。 磁性層組成 磁性粉（戸田工業社製 ＣＴＸ−８６０） ５０（重量部） リン酸エステル系界面活性剤 １ 塩化ビニル−酢酸ビニル−ビニルアルコール共重合体 ４ （積水化学社製 エスレックＡ） ウレタン樹脂 ６ （日本ポリウレタン工業社製 ニッポラン２３０４） メチルエチルケトン ３９Comparative Example 4 A thermoplastic magnetic layer was produced in the same manner as in Example 1, except that the magnetic layer was changed to the following composition. Magnetic layer composition Magnetic powder (CTX-860, manufactured by Toda Kogyo Co., Ltd.) 50 (parts by weight) Phosphate ester-based surfactant 1 Vinyl chloride-vinyl acetate-vinyl alcohol copolymer 4 (Esrec A, manufactured by Sekisui Chemical Co., Ltd.) Urethane resin 6 (Nipporan 2304 manufactured by Nippon Polyurethane Industry Co., Ltd.) Methyl ethyl ketone 39
【００３２】前述したような実施例１、比較例１、２、
３および４の転写型磁気記録媒体を、幅２5.４mmのテー
プ状にスリットし、転写型磁気テープを作製し、このと
きブロッキング状態を確認した。次に、この転写型磁気
テープを磁気カード支持体上に加熱転写し、ストライプ
付き磁気シートを作製し、このとき、転写温度と接着
性、支持体の変形について確認した。最後に、このスト
ライプ付き磁気シート上にスクリーン印刷で適当な絵柄
を印刷し、絵柄の変形、磁気特性（レベル変動）を確認
した。図２は、これらの実験結果をまとめて示す表を示
している。この表において、丸印は、その確認項目が良
好であることを示している。As described above, Example 1, Comparative Examples 1, 2,
The transfer type magnetic recording media of Nos. 3 and 4 were slit into a tape shape having a width of 25.4 mm to prepare a transfer type magnetic tape. At this time, the blocking state was confirmed. Next, the transfer type magnetic tape was transferred onto a magnetic card support by heating to prepare a magnetic sheet with stripes. At this time, the transfer temperature, adhesiveness, and deformation of the support were confirmed. Finally, an appropriate pattern was printed on the magnetic sheet with stripes by screen printing, and deformation of the pattern and magnetic characteristics (level fluctuation) were confirmed. FIG. 2 shows a table summarizing the results of these experiments. In this table, circles indicate that the confirmation items are good.
【００３３】[0033]
【発明の効果】本発明によれば、１回のコーティングマ
シーンのランニングで剥離層、磁性層、接着層を同時に
一括形成でき、接着層中の微粒の樹脂ビーズを接着剤の
有効厚み以上にすることにより、ロール状に巻き取った
とき基体と接着剤が直接接触することを防ぎ、磁気カー
ド製造時の転写、張り合わせにより支持体シートが変形
しない加熱接着温度で安定に接着する接着層が形成でき
る。さらに、磁性層は、熱硬化型にすることができ、絵
柄や文字等を印刷しても、絵柄の変形、磁気記録性能の
劣化がなく、信頼性の高い、低コストの転写型磁気記録
媒体を提供できる。According to the present invention, the release layer, the magnetic layer, and the adhesive layer can be simultaneously formed simultaneously by one running of the coating machine, and the fine resin beads in the adhesive layer are made to have a thickness larger than the effective thickness of the adhesive. This prevents the substrate from directly contacting the adhesive when wound into a roll, and forms an adhesive layer that stably adheres at a heating adhesion temperature at which the support sheet is not deformed by transfer and lamination during magnetic card production. . Further, the magnetic layer can be made of a thermosetting type, and even if a pattern or a character is printed, the pattern is not deformed and the magnetic recording performance is not deteriorated, and a highly reliable, low-cost transfer type magnetic recording medium is used. Can be provided.
【図１】本発明の一実施例としての転写型磁気記録媒体
の拡大断面図である。FIG. 1 is an enlarged sectional view of a transfer type magnetic recording medium as one embodiment of the present invention.
【図２】実験結果をまとめて示す表を示す図である。FIG. 2 is a diagram showing a table collectively showing experimental results.
１ 基体 ２ 剥離層 ３ 磁性層 ４ 接着層 ５ 樹脂ビーズ DESCRIPTION OF SYMBOLS 1 Substrate 2 Release layer 3 Magnetic layer 4 Adhesive layer 5 Resin beads
Claims (6)
着層を重ねて有する転写型磁気記録媒体において、前記
接着層中に、該接着層の有効厚み以上の粒子径を有する
微粒の樹脂ビーズを含有することを特徴とする転写型磁
気記録媒体。1. A transfer type magnetic recording medium having at least a release layer, a magnetic layer, and an adhesive layer superposed on a substrate, wherein fine resin beads having a particle diameter not smaller than the effective thickness of the adhesive layer in the adhesive layer. A transfer type magnetic recording medium comprising:
の厚み以下である請求項１記載の転写型磁気記録媒体。2. The transfer type magnetic recording medium according to claim 1, wherein the particle size of the resin beads is equal to or less than the thickness of the magnetic layer.
上、２０μｍ以下である請求項１または２記載の転写型
磁気記録媒体。3. The transfer type magnetic recording medium according to claim 1, wherein the particle size of the resin beads is 0.5 μm or more and 20 μm or less.
着層は、低温で加熱接着可能なものである請求項１また
は２または３記載の転写型磁気記録媒体。4. The transfer type magnetic recording medium according to claim 1, wherein the magnetic layer is a thermosetting type, and the adhesive layer is heat-bondable at a low temperature.
である請求項１または２または３または４記載の転写型
磁気記録媒体。5. The transfer type magnetic recording medium according to claim 1, wherein the resin beads have a low surface activity.
着層を重ねて有する転写型磁気記録媒体を製造する方法
において、前記基体としてロール状原反を用い、該原反
上に前記剥離層、磁性層、接着層を１回のコーティング
マシーンのランニングで同時に一括形成し、ロール状に
巻き取る工程を含み、前記磁性層は、熱硬化型であり、
前記接着層は、該接着層の有効厚み以上の粒子径を有す
る微粒の樹脂ビーズを含有してなるものであり、さら
に、前記ロール状に巻き取ったロール状磁気積層物の状
態において熱硬化処理を行なう工程を含むことを特徴と
する転写型磁気記録媒体の製造方法。6. A method for producing a transfer type magnetic recording medium having at least a release layer, a magnetic layer and an adhesive layer superposed on a substrate, wherein a roll-shaped raw material is used as the substrate, and the release layer is formed on the raw material. , Forming a magnetic layer and an adhesive layer all at once by running the coating machine at one time, including a step of winding in a roll shape, wherein the magnetic layer is a thermosetting type,
The adhesive layer contains fine resin beads having a particle diameter greater than or equal to the effective thickness of the adhesive layer, and is further subjected to a thermosetting treatment in a state of the roll-shaped magnetic laminate wound up in a roll. A method of manufacturing a transfer-type magnetic recording medium, comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08903197A JP3887447B2 (en) | 1997-04-08 | 1997-04-08 | Transfer type magnetic recording medium and method for manufacturing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08903197A JP3887447B2 (en) | 1997-04-08 | 1997-04-08 | Transfer type magnetic recording medium and method for manufacturing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10283631A true JPH10283631A (en) | 1998-10-23 |
| JP3887447B2 JP3887447B2 (en) | 2007-02-28 |
Family
ID=13959537
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP08903197A Expired - Fee Related JP3887447B2 (en) | 1997-04-08 | 1997-04-08 | Transfer type magnetic recording medium and method for manufacturing the same |
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| Country | Link |
|---|---|
| JP (1) | JP3887447B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002293067A (en) * | 2001-03-30 | 2002-10-09 | Dainippon Ink & Chem Inc | Magnetic recording medium |
-
1997
- 1997-04-08 JP JP08903197A patent/JP3887447B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002293067A (en) * | 2001-03-30 | 2002-10-09 | Dainippon Ink & Chem Inc | Magnetic recording medium |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3887447B2 (en) | 2007-02-28 |
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