JPS6037969B2 - 磁気テ−プ用リ−ダ−またはトレ−ラ−テ−プ - Google Patents

磁気テ−プ用リ−ダ−またはトレ−ラ−テ−プ

Info

Publication number
JPS6037969B2
JPS6037969B2 JP51105773A JP10577376A JPS6037969B2 JP S6037969 B2 JPS6037969 B2 JP S6037969B2 JP 51105773 A JP51105773 A JP 51105773A JP 10577376 A JP10577376 A JP 10577376A JP S6037969 B2 JPS6037969 B2 JP S6037969B2
Authority
JP
Japan
Prior art keywords
layer
tape
leader
trailer
thickness
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
Application number
JP51105773A
Other languages
English (en)
Other versions
JPS5332002A (en
Inventor
正広 内海
信隆 山口
了 高山
正昭 藤山
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.)
Fujifilm Holdings Corp
Original Assignee
Fuji Photo Film 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 Fuji Photo Film Co Ltd filed Critical Fuji Photo Film Co Ltd
Priority to JP51105773A priority Critical patent/JPS6037969B2/ja
Priority to NL7709737A priority patent/NL7709737A/xx
Priority to DE19772740148 priority patent/DE2740148A1/de
Publication of JPS5332002A publication Critical patent/JPS5332002A/ja
Priority to US06/082,905 priority patent/US4275108A/en
Publication of JPS6037969B2 publication Critical patent/JPS6037969B2/ja
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/20—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture with provision for splicing to provide permanent or temporary connections
    • G11B23/26—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture with provision for splicing to provide permanent or temporary connections of leaders for loading or threading, e.g. to form a temporary connection
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y10T428/256—Heavy metal or aluminum or compound thereof
    • Y10T428/257—Iron oxide or aluminum oxide
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y10T428/258—Alkali metal or alkaline earth metal or compound thereof
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y10T428/259—Silicic material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
    • Y10T428/269—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension including synthetic resin or polymer layer or component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31507—Of polycarbonate
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31511—Of epoxy ether
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31551—Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
    • Y10T428/31554—Next to second layer of polyamidoester
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31551—Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
    • Y10T428/31565—Next to polyester [polyethylene terephthalate, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31551—Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
    • Y10T428/31573—Next to addition polymer of ethylenically unsaturated monomer
    • Y10T428/31576—Ester monomer type [polyvinylacetate, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31551—Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
    • Y10T428/31573—Next to addition polymer of ethylenically unsaturated monomer
    • Y10T428/3158—Halide monomer type [polyvinyl chloride, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31551—Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
    • Y10T428/31573—Next to addition polymer of ethylenically unsaturated monomer
    • Y10T428/31583—Nitrile monomer type [polyacrylonitrile, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31551—Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
    • Y10T428/31591—Next to cellulosic
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31551—Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
    • Y10T428/31594—Next to aldehyde or ketone condensation product [phenol-aldehyde, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31551—Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
    • Y10T428/31598—Next to silicon-containing [silicone, cement, etc.] layer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31551—Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
    • Y10T428/31605—Next to free metal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31551—Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
    • Y10T428/31609—Particulate metal or metal compound-containing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31678—Of metal
    • Y10T428/31681—Next to polyester, polyamide or polyimide [e.g., alkyd, glue, or nylon, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31678—Of metal
    • Y10T428/31692—Next to addition polymer from unsaturated monomers
    • Y10T428/31699—Ester, halide or nitrile of addition polymer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31855—Of addition polymer from unsaturated monomers
    • Y10T428/31859—Next to an aldehyde or ketone condensation product
    • Y10T428/31877—Phenol-aldehyde
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31855—Of addition polymer from unsaturated monomers
    • Y10T428/3188—Next to cellulosic
    • Y10T428/31884—Regenerated or modified cellulose
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31855—Of addition polymer from unsaturated monomers
    • Y10T428/31935—Ester, halide or nitrile of addition polymer

Landscapes

  • Magnetic Record Carriers (AREA)
  • Laminated Bodies (AREA)
  • Paints Or Removers (AREA)
  • Photoreceptors In Electrophotography (AREA)

Description

【発明の詳細な説明】 本発明はビデオテープ、メモリーテープ、オーディオテ
ープ等の磁気記録用長尺帯の頭部、尾部、必要に応じて
中間部に位置する、リーダーまたはトレーラーテープの
新規な礎成に関するものである。
従来、磁気テープ部で生ずるドロップアウトは磁気テー
プ自体に基因すると考えられていたが、本発明者等の検
討結果によれば、このドロップアウトはリーダーテープ
に基因し、リーダーの表面電気抵抗または帯電圧が低い
場合はドロップアウトが少なくなることが判明した。
更に回転ビデオヘッドの目詰りも磁気テープ以外にリー
ダーまたはトレーラーテープに基因することが判明した
。テープ状物質の帯電防止処理としては｛１’表面に帯
電防止剤を塗布する、■層全体の電気抵抗を下げること
が考えられ、従釆のりーダーまたはトレーラー用テープ
としては次の様なものが知られている。‘１’金属蒸着
膜をストライプ状に設けたもの（実公昭４６−１４３４
９）、‘２｝ベースの片面または両面をマット化したも
の（実公昭４９一４２７２６）、‘３｝粒子サイズ４ｒ
以下の顔料を粘続剤１００部に対して５０〜８０碇部添
加した塗布層を設けたもの（特関昭４９−４０５０４同
４９−６７６０３）等である。上記３者のうち｛３｝の
ものが性能的に最もすぐれているが、依然として次のよ
うな欠点を有している。｛１｝表面電気抵抗または静電
気帯電圧を下げることが出来ない。■ヘッド目詰りが生
ずる。｛３’高温高温下でブロッキングが生ずる。リー
ダーまたはトレーラーテープにおける上記の欠点を解消
すべく本発明者等は研究を重ねた結果、プラスチック支
持体の片面に少なくとも０１第１層としての導電性層と
‘２）第２層としての白色顔料と粘給剤を主成分とする
層との積層塗膜を設けた構造とすれば、その目的は達せ
られることを見出して本発明を完成したものである。
従来のリーダーと本発明ＩＪ−ダーの断面を第１図およ
び第２図に示した。
第１図の従来のものはベース１と塗布層２とからなる。
第２図は本発明のものであり、ａはベース１、第１層（
導電層）２および第２層（保護層）３とからなり、ｂは
ベースー、下塗層４、導電層２および保護層３とからな
る。本発明で用いられる支持体は磁気テープの支持体と
同一または異なったものでよく、ポリエチレンテレフタ
レート、ポリエチレンナフタレート等ポリエステル類、
ポリプロピレン等のポリオレフイン類、セルローストリ
アセテート、セルロースダイアセテート等のセルロース
議導体、ポリ塩化ビニル等のビニル樹脂類、ポリカーボ
ネート等のプラスチック等から選ばれ、その厚さは磁気
テープの支持体と同じ程度から２０倍程度まで、４〜２
００仏が有効である。
本発明では下塗層は特に必要としないが、磁気テープ一
般に使われているものを設けることが好ましい。
一般的なものとしては、無定形ポリエステル樹脂、塩酢
ビ、線状飽和ポリエステル樹脂、ポリウレタン等の樹脂
の単独、又はポリカーボネート等の硬いバインダーとの
混合物を用い、元素を有機溶媒で溶解後、１仏前後の乾
燥厚みになるように塗布する。又は全く別法として、ベ
ース表面を酸またはアルカリ処理、サンドブラストによ
る処理、コロナ放電、紫外線照射処理などを行ない、ベ
ース表面を活性化させて磁性層をその上に密着し易くす
る下塗り処理もある。本発明で第１層として設ける導電
層は１×１び。
Ｑ／ｓｑ以下（単独でポリエチレンテレフタレ−トに塗
布した場合）の導電性樹脂を塗布することが好ましい。
導電性樹脂としてはポリカチオン系樹脂や第４級アンモ
ニウム塩樹脂等が挙げられる。この導電性樹脂に代えて
、カチオン系界面活性剤とプラスチック樹脂との混合物
も使用できるが、この場合、前者に比べて表面電気抵抗
の経時変化が起き易い。この第１層の厚さは０．１〜５
ｒ、好ましくは０．２〜２ムである。本発明の第２層で
使用する白色顔料としては、炭酸カルシウム、タルク粉
、ケイ酸マグネシワム、酸化亜鉛等が挙げられ、その粒
子サイズは０．０２〜１０ぷ、好ましくは０．０５〜３
仏であり、１」−ダーテープの光透過率を高めるために
白色であることが必要で、これによってリーダー、トレ
ーラーの位置を検出することが出来る。
また粘結剤としては塩化ビニル酢酸ビニル共重合体、塩
化ビニル酢酸ビニリデン共重合体、ポリアクリル酸ェス
テル、アクリル酸ヱステルアクリロニトリル共重合体、
セルロース系樹脂、ポリウレタン樹脂等の熱可塑性樹脂
、フェノール樹脂、ェポキシ樹脂等の熱硬化性樹脂等が
用いられる。上記白色顔料／樹脂比は６／Ｉ〜０．５／
１、好ましくはくは４′１〜１′１である。
第２層全体の厚さは１〜１０仏、好ましくは１〜６仏で
ある。本発明のリーダーまたはトレーラーテープを用い
ることにより次のような効果が蓑せられる。
１ 回転ビデオヘッドの目詰りがない。
２ 高温高温下のブロッキングがない。
３ 表面電気抵抗、帯電圧が低くなる。
４ 上記１，３により繰返し使用時のドロップアウト増
加が少ない。
５ 光透過率法によってリーダー、トレーラーの検出が
可能な光透過率を有している。
実施例 １ ′厚さ３６〆のポリエチレンテレフタレート上に無定形
ポリエステル樹脂を乾燥後の塗布厚０．５仏になるよう
塗布、乾燥後、下記第１層を塗布、乾燥させ、次いで下
記第２層を塗布、乾燥させさ後、通常の磁気テープの製
造工程と同様にカレンダー処理を行ない。
３′４インチ中に裁断してソニー製３／４インチ中Ｕマ
チツクカセツトにリーダー、トレーラーとして絹込後、
第１層、第２層を各種厚さにしたサンプル１〜７につい
て各種の評価を行なった。
第１層の組成 導電性樹脂（ポリビニルベンジルトリ メチルアンモニウムクロライド） ５０ｇ 溶剤（メタノール、メチルエチルケト ン ２′１） １．５ｋｇ
第２層の組成塩ビ酢ビ共重合体
４７ｇ白色顔料（平均粒子サイズ０．１山の炭酸カルシ
ウム） ２０雌硬化剤（トリィソシ
ァネート） ２総添加剤（レシチン、シリコーン
オイル）７ｇ比較例 １実施例１と同様に厚さ３６ｒの
ポリエチレンテレフタレートベース上に下塗層を設けた
後、実施例１の第１層と第２層をブレンドした単層を塗
布、乾燥しカレンダー処理を行なった。
組成 塩ビ獣ビー共重合体 ３鶴白色顔料（
平均粒子サイズ０．１山の炭酸カルシウム）
１０雌導電性アクリル樹脂 ２強硬
化剤（トリィソシアネート） １７ｇ添加剤（レシ
チン、シリコーンオィル）７ｇ このようにして得られたサンプル８について実施例１と
同様の評価を行なった。
第１表 各評価法は次のようにして行なった。
１ ドロップアウト増加率 ＶＴＲ：ソニー製 ＶＯ山１７００Ａ テープ：Ｕマチツク用３／４インチカセットテーフ。
Ｕマチック用３／４カセットに付属しているリーダー、
トレーラーの代りに各種実施例のリーダー、トレーラー
テープを接合し、第１回目の鏡画再生時のドロップアウ
ト数（ケ／分）をＤ，（１／３日以上の大きさをカウン
ト）とし、５０回目の鏡画再生時のドロップアウト数（
ケ／分）をＤ５。
として次式より算出した。ドロップアウ柳。
率＝登２ 表面電気抵抗 長さ３／４インチ×中３／４インチの資料をＴＡＫＥＤ
Ａ ＲＩＫＥＮ−ＴＲ−８６５１ ＥＬＥＣＴＲＯＭ旧
ＴＥＲを用いて測定した。
３ ブロッキング 中３／４インチのりーダーテープを直径３６肌のガラス
管に荷重４ｋ９の強さで巻きつけた後、４５℃、８０％
ＲＨ、２独特間放置後にリーダー、７ープ間の層間粘着
を目視で調べた。
４ 帯電圧 リーダーの表面をナイロン布で１５回摩擦後の帯電圧を
川口電気工業ＳＳＶロー４０ 帯電圧測定器にて計測し
た。
５ 光透過率 光源：タングステンランプ 受光部：フオトトランジスター リーダー、トレーラーなしの場合の光量Ｌｏに対し、リ
ーダー、トレーラー挿入時の光量を凶とし次式より求め
た。
光透過率宅×１００（％） 第１表のサンプル１〜７から判るように第１層が０．３
ム以上でドロップアウト増加率、目詰り、表面電気抵抗
、帯電圧等、全特性が優れており、これらのデータから
第１層の厚さ０．１仏以上で本発明の効果があると考え
られる。
またサンプル８のように第１層、第２層成分をブレンド
して単層として塗布したものは、本発明のものに比して
目詰り、ドロップアウト増加率、表面電気抵抗、ブロッ
キング等いずれも劣っていた。
【図面の簡単な説明】
第１図は従来リーダーの断面図、第２図ａ，ｂは本発明
リーダーの断面図に関するものである。 オ１図ガ２図

Claims (1)

    【特許請求の範囲】
  1. １ プラスチツク支持体の片面に少なくとも第１層とし
    てのポリカチオン系樹脂又は第４級アンモニウム塩樹脂
    からなる導電性樹脂を含み厚さが０．１〜５μの導電層
    および第２層としての白色顔料、および粘結剤を主成分
    とする層とからなる厚さが１〜１０μの積層塗膜を設け
    たことを特徴とする、磁気テープ用リーダーまたはトレ
    ーラーテープ。
JP51105773A 1976-09-06 1976-09-06 磁気テ−プ用リ−ダ−またはトレ−ラ−テ−プ Expired JPS6037969B2 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP51105773A JPS6037969B2 (ja) 1976-09-06 1976-09-06 磁気テ−プ用リ−ダ−またはトレ−ラ−テ−プ
NL7709737A NL7709737A (nl) 1976-09-06 1977-09-05 Aanloopband voor een magnetische band.
DE19772740148 DE2740148A1 (de) 1976-09-06 1977-09-06 Vorspannband oder nachlaufband fuer ein magnetband
US06/082,905 US4275108A (en) 1976-09-06 1979-10-09 Leader or trailer tape for a magnetic tape

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP51105773A JPS6037969B2 (ja) 1976-09-06 1976-09-06 磁気テ−プ用リ−ダ−またはトレ−ラ−テ−プ

Publications (2)

Publication Number Publication Date
JPS5332002A JPS5332002A (en) 1978-03-25
JPS6037969B2 true JPS6037969B2 (ja) 1985-08-29

Family

ID=14416473

Family Applications (1)

Application Number Title Priority Date Filing Date
JP51105773A Expired JPS6037969B2 (ja) 1976-09-06 1976-09-06 磁気テ−プ用リ−ダ−またはトレ−ラ−テ−プ

Country Status (4)

Country Link
US (1) US4275108A (ja)
JP (1) JPS6037969B2 (ja)
DE (1) DE2740148A1 (ja)
NL (1) NL7709737A (ja)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61202959U (ja) * 1985-06-06 1986-12-20
JPS6234848U (ja) * 1985-08-20 1987-02-28
KR102243141B1 (ko) * 2020-07-09 2021-04-22 한솔이엠이(주) 유동상 소각로

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5522239A (en) * 1978-08-02 1980-02-16 Fuji Photo Film Co Ltd Leader or trailer tape
JPS5755306A (en) * 1980-09-17 1982-04-02 Mitsubishi Electric Corp Simulator for steam generator
JPS57134601A (en) * 1981-02-12 1982-08-19 Mitsubishi Electric Corp Abnormality diagnosis apparatus for steam generator
JPS5873073A (ja) * 1981-10-27 1983-05-02 Fuji Photo Film Co Ltd 磁気記録媒体
DE3328595A1 (de) * 1982-08-09 1984-02-09 Victor Company Of Japan, Ltd., Yokohama, Kanagawa Magnetaufzeichnungsmaterial
US4590119A (en) * 1983-07-15 1986-05-20 Toray Industries, Inc. Polyester film and magnetic recording medium therefrom
US4803120A (en) * 1984-06-29 1989-02-07 Fuji Photo Film Co., Ltd. Magnetic tape having a leader tape
JPS6113421A (ja) * 1984-06-29 1986-01-21 Fuji Photo Film Co Ltd リ−ダ−テ−プを有する磁気テ−プ
JPH0690780B2 (ja) * 1985-02-08 1994-11-14 大日本印刷株式会社 磁気テ−プ用リ−ダ−テ−プ
JPH0741530B2 (ja) * 1985-11-27 1995-05-10 株式会社日立製作所 磁気デイスクの製造方法
JPS62199364A (ja) * 1986-02-27 1987-09-03 Fuji Photo Film Co Ltd 研磨テ−プ
JPH0626006B2 (ja) * 1987-03-25 1994-04-06 富士写真フイルム株式会社 研磨テ−プ
CN1221974C (zh) * 1999-07-09 2005-10-05 富士胶片株式会社 盒式磁带
US6387485B1 (en) 1999-08-12 2002-05-14 Flexcon Company, Inc. Composite substrate with adhesive and ferromagnetic properties
GB0208458D0 (en) * 2002-04-12 2002-05-22 Bp Chem Int Ltd Support grid
US20090251311A1 (en) 2008-04-06 2009-10-08 Smith Patrick W Systems And Methods For Cooperative Stimulus Control

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5129010B1 (ja) * 1969-09-10 1976-08-23
US4047232A (en) * 1971-04-20 1977-09-06 Sony Corporation Leader tape
JPS5136044B1 (ja) * 1971-04-20 1976-10-06

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61202959U (ja) * 1985-06-06 1986-12-20
JPS6234848U (ja) * 1985-08-20 1987-02-28
KR102243141B1 (ko) * 2020-07-09 2021-04-22 한솔이엠이(주) 유동상 소각로

Also Published As

Publication number Publication date
NL7709737A (nl) 1978-03-08
JPS5332002A (en) 1978-03-25
US4275108A (en) 1981-06-23
DE2740148A1 (de) 1978-03-09
DE2740148C2 (ja) 1988-11-10

Similar Documents

Publication Publication Date Title
JPS6037969B2 (ja) 磁気テ−プ用リ−ダ−またはトレ−ラ−テ−プ
US4146031A (en) Leader or trailer for a magnetic tape
KR890003551B1 (ko) 자기기록 매체
JP3215981B2 (ja) 磁気記録媒体及び磁気記録媒体カセット
JP2611965B2 (ja) 磁気記録媒体
JPS6215945B2 (ja)
US4187345A (en) Magnetic recording medium
JPS5819776A (ja) クリ−ニングリ−ダ−テ−プ
JPS6222168B2 (ja)
JP2813176B2 (ja) 磁気記録媒体
JPS59175024A (ja) 磁気記録媒体
JPH0120488B2 (ja)
US5415928A (en) Magnetic recording tape
JP2695647B2 (ja) 磁気記録媒体
JPS61296523A (ja) 磁気記録媒体用リ−ダ−テ−プ
JPH0467428A (ja) 磁気記録媒体
JPS6355726A (ja) 磁気記録媒体
EP0443523B1 (en) Magnetic recording medium
JP2969148B2 (ja) 磁気記録媒体
JP2778097B2 (ja) 磁気記録媒体
JPH03290814A (ja) データカセット
JPS63184916A (ja) 磁気記録媒体
JPH10261219A (ja) 磁気記録媒体及びその製造方法
JPS5928228A (ja) 磁気記録媒体
JPS63184917A (ja) 磁気記録媒体