JP2727203B2 - Transfer type magnetic sheet - Google Patents
Transfer type magnetic sheetInfo
- Publication number
- JP2727203B2 JP2727203B2 JP25496488A JP25496488A JP2727203B2 JP 2727203 B2 JP2727203 B2 JP 2727203B2 JP 25496488 A JP25496488 A JP 25496488A JP 25496488 A JP25496488 A JP 25496488A JP 2727203 B2 JP2727203 B2 JP 2727203B2
- Authority
- JP
- Japan
- Prior art keywords
- layer
- magnetic sheet
- transfer type
- magnetic
- type magnetic
- 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 - Fee Related
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- Adhesive Tapes (AREA)
- Paints Or Removers (AREA)
- Magnetic Record Carriers (AREA)
- Manufacturing Of Magnetic Record Carriers (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は転写型磁気シートに関し、詳しくは耐摩耗性
や剥離性などに優れた剥離保護層を有する転写型磁気シ
ートに関する。Description: TECHNICAL FIELD The present invention relates to a transfer type magnetic sheet, and more particularly, to a transfer type magnetic sheet having a release protective layer having excellent abrasion resistance and release properties.
［従来の技術］ 一般に、転写型磁気シートはポリエステルフィルムな
どの基体上に剥離層、磁気層を順次積層した構造を有し
ており、被転写体に磁気層側を加熱圧着して基体を引き
剥がし、磁気層と剥離層とを被転写体に転写することに
より磁気カードなどの各種磁気記録媒体をつくるのに用
いられている。[Prior Art] In general, a transfer type magnetic sheet has a structure in which a release layer and a magnetic layer are sequentially laminated on a base such as a polyester film, and the base is drawn by heat-pressing the magnetic layer side to an object to be transferred. It is used to produce various magnetic recording media such as a magnetic card by peeling off and transferring a magnetic layer and a peeling layer to an object to be transferred.
このような転写型磁気シートの剥離層は、剥離性に優
れるだけでなく、転写後は得られた磁気記録媒体の表面
層となり記録再生時に直接磁気ヘッドと摺接するため、
耐摩耗性に優れることが必要である。The release layer of such a transfer type magnetic sheet is not only excellent in releasability, but also becomes a surface layer of the obtained magnetic recording medium after transfer and is in direct sliding contact with the magnetic head during recording and reproduction.
It is necessary to have excellent wear resistance.
従来より、転写型磁気シートの剥離層の構成素材とし
ては、ポリメチルメタアクリレートや塩化ゴムなどの熱
可塑性樹脂がよく用いられているが、ポリメチルメタア
クリレートは剥離性には優れるものの硬くてもろい性質
のため耐摩耗性に欠け、また塩化ゴムはポリメチルメタ
アクリレートに比べ耐摩耗性に優れるが剥離性に問題が
あった。このため、かかる剥離層中に潤滑剤等を混入す
る手法が採られてきたが、未だ十分な耐摩耗性や剥離性
を有するものは得られていない。Conventionally, as a constituent material of a release layer of a transfer type magnetic sheet, thermoplastic resins such as polymethyl methacrylate and chlorinated rubber are often used, but polymethyl methacrylate is excellent in releasability but hard and brittle. Abrasion resistance is lacking due to its properties, and chlorinated rubber is more excellent in abrasion resistance than polymethyl methacrylate, but has a problem in releasability. For this reason, a technique of mixing a lubricant or the like into such a release layer has been adopted, but a material having sufficient wear resistance and release properties has not yet been obtained.
他方、剥離層と磁気層との間にポリビニルブチラール
樹脂、ウレタン樹脂、エポキシ樹脂などからなる保護層
を設けることによって耐摩耗性の改善を図る手法も提案
されている。しかしながら、この方法では保護層が介在
するため使用時に磁気ヘッドと磁気層間の間隙損失が大
きくなり、書込電流の増大、読取出力の低下、分解能の
劣化等を招く上、一層増える分コスト高になる欠点を避
けることはできない。On the other hand, there has been proposed a method of improving abrasion resistance by providing a protective layer made of a polyvinyl butyral resin, a urethane resin, an epoxy resin, or the like between a release layer and a magnetic layer. However, in this method, since the protective layer is interposed, the gap loss between the magnetic head and the magnetic layer increases during use, which causes an increase in write current, a decrease in read output, a deterioration in resolution, and the like, and further increases the cost. Some disadvantages cannot be avoided.
［発明が解決しようとする課題］ 本発明の目的は、上記のような保護層の介在を全く必
要としないで、剥離性、耐摩耗性共に優れた剥離保護層
を有する転写型磁気シートを提供することにある。[Problems to be Solved by the Invention] An object of the present invention is to provide a transfer type magnetic sheet having a peeling protective layer excellent in both peelability and abrasion resistance without requiring any intervention of the protective layer as described above. Is to do.
［課題を解決するための手段及び作用］ 本発明者らは、特定の熱硬化性樹脂にマイクロクリス
タリンワックスと硬化剤を併用することによって、剥離
性に十分な保護機能を付与され、かつ転写型磁気シート
に要求される他の特性を全く損うことがないことを見い
出し、上記問題を一気に解決したのである。Means and Action for Solving the Problems The inventors of the present invention used a specific thermosetting resin in combination with a microcrystalline wax and a curing agent, thereby imparting a sufficient protective function to the releasability and a transfer type. The inventor has found that the other characteristics required for the magnetic sheet are not impaired at all and has solved the above problem at once.
即ち、本発明は、少なくとも剥離保護層と磁気層とを
基体上に順次形成してなる転写型磁気シートにおいて、
剥離保護層が官能基としてエポキシ基を有する熱硬化性
アクリル樹脂又は熱硬化性メタクリル樹脂とマイクロク
リスタリンワックスと硬化剤とを含有し、マイクロクリ
スタリンワックスが、熱硬化性アクリル樹脂又は熱硬化
性メタクリル樹脂に対し0.5wt％〜10wt％の範囲で添加
され、しかも硬化剤が、熱硬化性アクリル樹脂又は熱硬
化性メタクリル樹脂との反応当量１に対し0.8〜1.2の範
囲で添加されていることを特徴とするものである。That is, the present invention provides a transfer type magnetic sheet formed by sequentially forming at least a peeling protection layer and a magnetic layer on a substrate,
The release protective layer contains a thermosetting acrylic resin or a thermosetting methacrylic resin having an epoxy group as a functional group, a microcrystalline wax and a curing agent, and the microcrystalline wax is a thermosetting acrylic resin or a thermosetting methacrylic resin. 0.5 wt% to 10 wt%, and the curing agent is added in the range of 0.8 to 1.2 with respect to the reaction equivalent of 1 with the thermosetting acrylic resin or the thermosetting methacryl resin. It is assumed that.
以下、図面を参照しながら本発明を詳細に説明する。 Hereinafter, the present invention will be described in detail with reference to the drawings.
第１図は本発明の転写型磁気シート５の一例を示した
もので、ポリエステル、アセテート、ポリカーボネート
などの基体１に剥離保護層２が設けられ、この層上に、
γ−Fe2O3などの磁性粉末を塩化ビニル−酢酸ビニル共
重合体、ポリウレタン系樹脂などのバインダーとともに
塗工してなる磁気層３が形成されている。必要ならば第
２図に示すように磁気層３上にポリエステル、塩化ビニ
ルなどの熱可塑性樹脂からなる接着層４を設けてもよ
い。FIG. 1 shows an example of the transfer type magnetic sheet 5 of the present invention. A release protection layer 2 is provided on a substrate 1 such as polyester, acetate, or polycarbonate.
A magnetic layer 3 is formed by applying a magnetic powder such as γ-Fe 2 O 3 together with a binder such as a vinyl chloride-vinyl acetate copolymer or a polyurethane resin. If necessary, an adhesive layer 4 made of a thermoplastic resin such as polyester or vinyl chloride may be provided on the magnetic layer 3 as shown in FIG.
上記剥離保護層２は、アクリル樹脂を溶剤に溶解さ
せ、これに液状マイクロクリスタリンワックスを添加
し、更に硬化剤を混合撹拌して剥離保護塗料を調製し、
基体１上に乾燥厚が0.5〜２μｍとなるように塗工（印
刷）、乾燥することにより形成される。The release protection layer 2 is prepared by dissolving an acrylic resin in a solvent, adding a liquid microcrystalline wax thereto, and further mixing and stirring a curing agent to prepare a release protection paint.
It is formed by coating (printing) and drying on the substrate 1 so that the dry thickness is 0.5 to 2 μm.
本発明において用いられるアクリル樹脂又はメタクリ
ル樹脂は、官能基を持っている熱硬化性の付加縮合タイ
プであって、特にエポキシ基を持つものであれば限定さ
れない。具体的にはポリアクリル酸グリシジル、ポリメ
タクリル酸グリシジル、または上記の樹脂にそれぞれア
クリル酸、メタクリル酸、アクリル酸メチル、メタクリ
ル酸メチルなどを共重合させたポリマーなどが挙げられ
る。The acrylic resin or methacrylic resin used in the present invention is a thermosetting addition condensation type having a functional group, and is not particularly limited as long as it has an epoxy group. Specific examples include polyglycidyl acrylate, polyglycidyl methacrylate, and polymers obtained by copolymerizing the above resins with acrylic acid, methacrylic acid, methyl acrylate, methyl methacrylate, and the like.
また、本発明におけるマイクロクリスタリンワックス
の添加量はアクリル樹脂又はメタクリル樹脂に対し0.5w
t％〜10wt％が必要である。添加量が少なすぎると剥離
保護層表面の滑りが悪くなって良好な耐摩耗性が得られ
ず、また逆に多すぎると剥離性や耐薬品性が悪くなる傾
向がある。Further, the addition amount of the microcrystalline wax in the present invention is 0.5w relative to the acrylic resin or methacrylic resin.
t% to 10 wt% is required. If the addition amount is too small, the surface of the peeling protective layer slips and good abrasion resistance is not obtained, and if it is too large, the peeling property and chemical resistance tend to deteriorate.
さらに硬化剤としては、アクリル樹脂又はメタクリル
樹脂の官能基と反応するものであればよく、具体的には
ジエチルトリアミン、メタフェニレンジアミン、ヘキサ
ヒドロフタール酸無水物、ドデセニルコハク酸無水物な
どが挙げられる。添加量は反応当量１に対し、0.8〜1.2
程度が必要で、添加量が少ないと良好な耐摩耗性、耐薬
品性が得られず、逆に多すぎると剥離性が悪くなる傾向
がある。Further, the curing agent may be any one that reacts with a functional group of an acrylic resin or a methacrylic resin, and specific examples include diethyltriamine, metaphenylenediamine, hexahydrophthalic anhydride, dodecenylsuccinic anhydride, and the like. . The addition amount is 0.8 to 1.2 with respect to 1 reaction equivalent.
If the amount is small, good abrasion resistance and chemical resistance cannot be obtained, and if it is too large, the releasability tends to be poor.
溶剤については特に限定されず、使用する樹脂、マイ
クロクリスタリンワックス、硬化剤を溶解するものであ
ればよく、具体的にはメチルエチルケトン、トルエン、
シクロヘキサノン、酢酸エステル、キシレンなどが挙げ
られる。The solvent is not particularly limited, as long as it dissolves the resin to be used, the microcrystalline wax, and the curing agent, and specifically, methyl ethyl ketone, toluene,
Cyclohexanone, acetate, xylene and the like can be mentioned.
上記のようにして得られた転写型磁気シート５を、硬
質ポリ塩化ビニルやポリエステルフィルムなど各種プラ
スチックシート、紙、布などからなる被転写体６に磁気
層３（接着層を設けた場合は接着層）側を被転写体６の
表面に対接するように重ね合わせ、第３図に示すように
加熱したシリコンゴムローラ８で押圧した後、基体１を
剥離して被転写体６上にストライプ状の磁気層３および
剥離保護層２を転写する。その後、第４図に示すよう
に、転写された磁気シートをプレス板７で加熱圧着を行
うことにより、第５図（ａ），（ｂ）に示すような磁気
カードなどの磁気記録媒体が得られる。ここで銅図
（ａ）は被転写体６がポリエステルフィルムで構成され
ている場合であり、また（ｂ）は、被転写体６が硬質ポ
リ塩化ビニルで構成されている場合について示したもの
である。The transfer-type magnetic sheet 5 obtained as described above is applied to a transfer layer 6 made of various plastic sheets such as hard polyvinyl chloride or polyester film, paper, cloth, or the like. 3) is superimposed on the surface of the transferred object 6 so as to be in contact with the surface of the transferred object 6 and pressed by a heated silicon rubber roller 8 as shown in FIG. The magnetic layer 3 and the peel protection layer 2 are transferred. Thereafter, as shown in FIG. 4, the transferred magnetic sheet is heated and pressed with a press plate 7 to obtain a magnetic recording medium such as a magnetic card as shown in FIGS. 5 (a) and 5 (b). Can be Here, the copper diagram (a) shows the case where the transferred body 6 is made of a polyester film, and the (b) shows the case where the transferred body 6 is made of hard polyvinyl chloride. is there.
なお、上記剥離保護塗料中には上記成分以外に他の添
加剤を含めてもよい。また、剥離保護層と磁気層との間
に、文字地紋層、着色層、隠蔽層などを任意に選択して
設けてもよい。In addition, you may include other additives besides the said component in the said peeling protection paint. Further, between the peeling protection layer and the magnetic layer, a character copy-forgery-inhibited pattern layer, a coloring layer, a concealing layer, and the like may be arbitrarily selected and provided.
次に、本発明を実施例により説明する。 Next, the present invention will be described with reference to examples.
［実施例］ 実施例１・比較例１ 官能基としてエポキシ基を有する熱硬化性のアクリル
樹脂（OXQ−70、三井東圧製）を固形分が15％となるよ
うにトルエンで希釈し、それにマイクロクリスタリンワ
ックス（「Hi−Mic−1045」日本清蝋製）と硬化剤（NP
−38−70S、三井東圧製）を下記の組成で分散混合して
剥離保護塗料を調製した。[Example] Example 1 / Comparative Example 1 A thermosetting acrylic resin having an epoxy group as a functional group (OXQ-70, manufactured by Mitsui Toatsu) was diluted with toluene so that the solid content was 15%. Microcrystalline wax ("Hi-Mic-1045" made by Nippon Seiswa) and curing agent (NP
-38-70S, manufactured by Mitsui Toatsu) was dispersed and mixed in the following composition to prepare a release protection coating.
得られた上記塗料を、各々、厚さ25μｍのポリエステ
ルフィルム上に乾燥厚約１μｍとなるように塗工乾燥し
て剥離保護層を形成した。 Each of the obtained paints was applied and dried on a polyester film having a thickness of 25 μm to a dry thickness of about 1 μm to form a release protective layer.
この剥離保護層上に下記組成の磁気塗料を、乾燥厚が
約10μｍとなるように塗工乾燥して磁気層を形成した。A magnetic paint having the following composition was applied on the release protective layer so as to have a dry thickness of about 10 μm and dried to form a magnetic layer.
更にその後、磁気層上に接着塗料（VMCH15％UCC製）
を乾燥厚約３μｍになるように塗工乾燥して接着層を精
鋭して転写型磁気シートを得た。 After that, an adhesive paint (VMCH 15% UCC) is applied on the magnetic layer
Was coated and dried to a dry thickness of about 3 μm to sharpen the adhesive layer to obtain a transfer type magnetic sheet.
得られた転写型磁気シートを6.5mm幅にスリットし、
これを塩化ビニルフィルムより構成される被転写体上
に、接着層表面が被転写体表面と対接するように重ね合
わせ、基体の上から温度約90℃、圧力5Kg/cm2の条件で
加熱したシリコンゴムローラにより約２秒間押圧して被
転写体に仮貼合した。その後基体を剥離して被転写体上
にストライプ状の磁気層および剥離保護層とを転写し
た。このように熱転写された層を有する被転写体をステ
ンレス鏡面板にはさみ込んで温度135℃、圧力17Kg/cm2
の条件で10分間熱プレスした後、カードの大きさに抜き
磁気カードを得た。Slit the obtained transfer type magnetic sheet to a width of 6.5 mm,
This was superimposed on an object to be transferred composed of a vinyl chloride film so that the surface of the adhesive layer was in contact with the surface of the object to be transferred, and heated at a temperature of about 90 ° C. and a pressure of 5 kg / cm 2 from above the substrate. It was pressed for about 2 seconds with a silicone rubber roller to temporarily bond it to the transfer target. Thereafter, the substrate was peeled off, and the stripe-shaped magnetic layer and the peeling protection layer were transferred onto the transfer receiving body. The transfer object having the layer thus thermally transferred is sandwiched between stainless steel mirror plates at a temperature of 135 ° C. and a pressure of 17 kg / cm 2.
After hot-pressing for 10 minutes under the conditions described above, the card was punched out to obtain a magnetic card.
比較例２ 本発明における熱硬化性のアクリル樹脂の代わりに熱
可塑性のポリメチルメタアクリレートを使用した以外
は、実施例１・比較例１の試料No.5と同様に磁気カード
を得た。Comparative Example 2 A magnetic card was obtained in the same manner as in Sample No. 5 of Example 1 and Comparative Example 1, except that thermoplastic polymethyl methacrylate was used instead of the thermosetting acrylic resin in the present invention.
比較例３ マイクロクリスタリンワックスの代わりにポリエチレ
ンワックスを使用した以外は、実施例１・比較例１の試
料No.5と同様に磁気カードを得た。Comparative Example 3 A magnetic card was obtained in the same manner as in Sample No. 5 of Example 1 and Comparative Example 1, except that polyethylene wax was used instead of microcrystalline wax.
上記のようにして得た実施例及び比較例に係る各々の
磁気シート（又は磁気カード）の性能試験を行ったとこ
ろ、下表のような結果が得られた。When performance tests were performed on the magnetic sheets (or magnetic cards) according to the examples and comparative examples obtained as described above, the results shown in the following table were obtained.
上記の性能試験は次のようにして行った。 The performance test was performed as follows.
○剥離性……磁気シートを20mm幅に裁断して磁気層側を
固定し、ポリエステル基体に静荷重をかけて90度ピール
を行ない、ポリエステル基体が剥離を開始する時の荷重
を測定した。O Peelability: The magnetic sheet was cut into a width of 20 mm, the magnetic layer side was fixed, a static load was applied to the polyester substrate, a 90 degree peel was performed, and the load at which the polyester substrate started peeling was measured.
○成膜性……基体上に所定膜厚0.5〜２μｍとなるよう
に剥離保護層を塗工し、ピンホールや弾きなどを外観
（目視）により判断した。○ Film-forming property: A release protective layer was coated on the substrate so as to have a predetermined film thickness of 0.5 to 2 μm, and pinholes and flipping were judged by appearance (visual observation).
○耐摩耗性……磁気カードについて擬似ヘッド（500g荷
重）を用いて走行試験を行ない1000回往復走行させたと
きの出力低下率を測定して耐摩耗性の評価を行った。Abrasion resistance: A running test was performed on the magnetic card using a pseudo head (500 g load) to evaluate the abrasion resistance by measuring the output reduction rate when the magnetic card was reciprocated 1000 times.
○耐溶剤性……磁気カードの磁気ストライプ部分をアセ
トンを含浸させたガーゼで20回こすった後、その表面状
態を目視で観察して耐溶剤性の評価を行なった。Solvent resistance: The magnetic stripe portion of the magnetic card was rubbed 20 times with gauze impregnated with acetone, and the surface state was visually observed to evaluate the solvent resistance.
○鉛筆硬度……剥離保護層の表面硬度をJISK5400塗料一
般試験方法（6.14鉛筆引っかき試験）に基づいて調べ
た。○ Pencil hardness: The surface hardness of the peeling protective layer was examined based on the JISK5400 paint general test method (6.14 pencil scratch test).
［発明の効果］ 本発明は剥離保護層の形成樹脂としてエポキシ基を有
する熱硬化性アクリル樹脂又は熱硬化性メタクリル樹脂
を用い、かつ適量のマイクロクリスタリンワックス及び
硬化剤を併用するため、剥離性、耐摩耗性ともに優れ、
しかも耐溶剤性や成膜性なども十分で、別途保護層を介
在させる必要はなく、電気的特性を損うこともない。[Effects of the Invention] The present invention uses a thermosetting acrylic resin or a thermosetting methacryl resin having an epoxy group as a resin for forming a release protective layer, and uses an appropriate amount of a microcrystalline wax and a curing agent in combination. Excellent wear resistance,
In addition, the solvent resistance and film-forming properties are sufficient, and there is no need to separately provide a protective layer, and the electric characteristics are not impaired.
第１図は本発明転写型磁気シートの一例を示す断面図、
第２図は別の例を示す断面図、第３図は第１図の転写型
磁気シートを被転写体に熱転写すると共に基体を剥離す
る際の断面図、第４図は第３図の仮貼合された転写型磁
気シートをプレス板で加熱圧着する際の断面図、第５図
（ａ）および（ｂ）は本発明転写型磁気シートの熱プレ
ス後の状態を示す断面図である。 １……基体、２……剥離保護層、３……磁気層 5,5′……転写型磁気シートFIG. 1 is a sectional view showing an example of the transfer type magnetic sheet of the present invention,
FIG. 2 is a cross-sectional view showing another example, FIG. 3 is a cross-sectional view when the transfer type magnetic sheet of FIG. 1 is thermally transferred to an object to be transferred and the substrate is peeled off, and FIG. FIG. 5 (a) and (b) are cross-sectional views showing a state after hot pressing of the transfer type magnetic sheet of the present invention when the bonded transfer type magnetic sheet is heat-pressed with a press plate. DESCRIPTION OF SYMBOLS 1 ... Base, 2 ... Peeling protection layer, 3 ... Magnetic layer 5, 5 '... Transfer type magnetic sheet
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 //(Ｃ０９Ｄ 163/00 191:06） (56)参考文献 特開 昭59−16784（ＪＰ，Ａ) 特開 昭60−151825（ＪＰ，Ａ) 特開 昭61−221218（ＪＰ，Ａ) 特開 昭55−125535（ＪＰ，Ａ) 特開 昭53−57236（ＪＰ，Ａ) 特開 昭55−132527（ＪＰ，Ａ) 実開 昭57−161128（ＪＰ，Ｕ) 実開 昭57−161130（ＪＰ，Ｕ)──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. 6 Identification number Agency reference number FI Technical display location // (C09D 163/00 191: 06) (56) References JP-A-59-16784 (JP, A) JP-A-60-151825 (JP, A) JP-A-61-221218 (JP, A) JP-A-55-125535 (JP, A) JP-A-53-57236 (JP, A) −132527 (JP, A) Fully open sho 57-161128 (JP, U) Really open sho 57-161130 (JP, U)
Claims (1)
に順次形成してなる転写型磁気シートにおいて、剥離保
護層が官能基としてエポキシ基を有する熱硬化性アクリ
ル樹脂又は熱硬化性メタクリル樹脂とマイクロクリスタ
リンワックスと硬化剤とを含有し、マイクロクリスタリ
ンワックスが、熱硬化性アクリル樹脂又は熱硬化性メタ
クリル樹脂に対し0.5wt％〜10wt％の範囲で添加され、
しかも硬化剤が、熱硬化性アクリル樹脂又は熱硬化性メ
タクリル樹脂との反応当量１に対し0.8〜1.2の範囲で添
加されていることを特徴とする転写型磁気シート。1. A transfer type magnetic sheet having at least a release protective layer and a magnetic layer formed sequentially on a substrate, wherein the release protective layer has a thermosetting acrylic resin or a thermosetting methacrylic resin having an epoxy group as a functional group. And a microcrystalline wax and a curing agent, wherein the microcrystalline wax is added in a range of 0.5 wt% to 10 wt% with respect to the thermosetting acrylic resin or the thermosetting methacrylic resin,
Further, the transfer type magnetic sheet is characterized in that a curing agent is added in a range of 0.8 to 1.2 with respect to a reaction equivalent of 1 with the thermosetting acrylic resin or the thermosetting methacrylic resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25496488A JP2727203B2 (en) | 1988-10-12 | 1988-10-12 | Transfer type magnetic sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25496488A JP2727203B2 (en) | 1988-10-12 | 1988-10-12 | Transfer type magnetic sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02103719A JPH02103719A (en) | 1990-04-16 |
| JP2727203B2 true JP2727203B2 (en) | 1998-03-11 |
Family
ID=17272315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25496488A Expired - Fee Related JP2727203B2 (en) | 1988-10-12 | 1988-10-12 | Transfer type magnetic sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2727203B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8397998B1 (en) | 1999-10-23 | 2013-03-19 | Ultracard, Inc. | Data storage device, apparatus and method for using same |
| US7036739B1 (en) * | 1999-10-23 | 2006-05-02 | Ultracard, Inc. | Data storage device apparatus and method for using same |
| WO2004003948A1 (en) * | 2002-06-27 | 2004-01-08 | Dainippon Ink And Chemicals, Inc. | Formed product for electrolytic capacitor anode element, formed product with substrate, method for manufacture thereof and method for manufacturing electrolytic capacitor anode element |
| CN107739561B (en) * | 2017-10-19 | 2020-05-29 | 武汉华工图像技术开发有限公司 | Matte coating, preparation method thereof and matte coating with fine and smooth appearance |
-
1988
- 1988-10-12 JP JP25496488A patent/JP2727203B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02103719A (en) | 1990-04-16 |
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