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公开(公告)号：US3734772A
公开(公告)日：1973-05-22
申请号：US3734772D
申请日：1971-01-13
Applicant: BASF AG
CPC classification number: G11B5/70 , G11B5/74 , Y10S428/90 , Y10T428/24413
Abstract: MAGNETIC RECORDING MEDIA IN TAPE FORM HAVING ON THE BACK OF THE SUBSTRATE A PATTERN OF RAISED DOTS WITH A HIGH COEFFICIENT OF FRICTION WHICH IMPROVE THE WINDING PROPERTIES.
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公开(公告)号：US3793074A
公开(公告)日：1974-02-19
申请号：US3793074D
申请日：1972-01-13
Applicant: BASF AG
Inventor： FRANKENTHAL K , SCHNELL G , BALZ W , PRUEGL R , HARTMANN J , STRITZINGER H
CPC classification number: G11B5/7023
Abstract: Manufacture of magnetic recording media by preparing a dispersion of particulate magnetic pigment in a binder based on a mixture of polycondensates with the addition of organic solvents and, optionally, conventional additives, applying a coating of said dispersion to the substrate and finally drying or curing the coating. The binder used for the dispersion of magnetic pigment consists of a mixture of phenol/formaldehyde condensates and thermoplastic polyester of terephthalic and isophthalic acids and ethylene glycol and neopentyl glycol.
Abstract translation: 通过在基于缩聚物的混合物的基础上制备颗粒状磁性颜料在添加有机溶剂和任选的常规添加剂的混合物中制备磁记录介质，将所述分散体的涂层施加到基底上，最后干燥或固化 涂层。 用于磁性颜料分散的粘合剂由苯酚/甲醛缩合物和对苯二甲酸和间苯二甲酸和乙二醇和新戊二醇的热塑性聚酯的混合物组成。
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3.发明授权Guide elements for magnetic tapes wound or to be wound in the form of packs on flangeless spools 失效磁带的指导元件在无盘状态下的包装形式发生或受到伤害
公开(公告)号：US3841582A
公开(公告)日：1974-10-15
申请号：US20870471
申请日：1971-12-16
Applicant: BASF AG
Inventor： SCHAEFFER N , SCHNELL G , ANDRIESSEN W , FITTERER H , UHL K
IPC: G11B15/60 , G11B20060101 , G11B15/00 , G11B15/26 , G11B23/04 , G11B23/08 , G11B23/087 , G11B23/10
CPC classification number: G11B23/08757
Abstract: Guide elements for magnetic tapes wound or to be wound in the form of packs on flangeless spools, the guide elements being movable in the plane of rotation of the packs. At least part of the guide elements is located between the pack and the outermost winding and thus constantly guides the tape as it is wound or unwound, resulting in optimal tape guidance and consequently in a stable and accurate winding on the spool.
Abstract translation: 用于在无法兰卷轴上缠绕或以包装形式卷绕的磁带的引导元件，引导元件可在包装的旋转平面中移动。 导向元件的至少一部分位于包装件和最外侧的卷绕件之间，因此在缠绕或解卷时不断地引导胶带，从而导致最佳的胶带引导，从而在卷轴上稳定且准确地卷绕。
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公开(公告)号：US3730852A
公开(公告)日：1973-05-01
申请号：US3730852D
申请日：1971-11-09
Applicant: BASF AG
CPC classification number: G11B5/8404
Abstract: THE INVENTION RELATES TO A PROCESS FOR THE MANUFACTURE OF MAGNETIC RECORDING MEDIA HAVING THIN METALLIC FERROMAGNETIC COATINGS. THE MAGNETIC RECORDING MEDIA ARE MANUFACTURED BY TREATING A SUBSTRATE HAVING A COATING CONSISTING OF A DISPERSION OF PARTICULATE IRON OR ZINC IN A BINDER SUCH THAT ELECTROLESS DEPOSITION OF COPPER TAKES PLACE BY DISPLACEMENT OF THE IRON OR ZINC, WHICH COPPER COATING MAY BE THICKENED BY ELECTRODEPOSITING COPPER OR SILVER THEREON. A FERROMAGNETIC COATING CONSISTING OF COBALT AND NICKEL AND ADDITIONALLY PHOSPHORUS, COPPER OR ZINC AND/OR MANGANESE AND OPTIONALLY IRON IS ELECTRODEPOSITED ON THE COPPER LAYER. THE PROCESS OF THE INVENTION PRODUCES MAGNETIC RECORDING MEDIA WITH THIN METALLIC COATINGS OF HIGH ABRASION RESISTANCE WHICH CAUSE MINIMUM HEAD WEAR AND HAVE A HIGH STORAGE CAPACITY.
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Patent Agency Ranking
公开(公告)号：ZA7202090B
公开(公告)日：1973-01-31
申请号：ZA7202090
申请日：1972-03-28
Applicant: BASF AG
Inventor： FITTERER H , SCHNELL G , SCHAEFFER N , ANDRIESSEN W , UHL K
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公开(公告)号：SE385340B
公开(公告)日：1976-06-21
申请号：SE395272
申请日：1972-03-27
Applicant: BASF AG
Inventor： SCHAEFFER N , FITTERER H , UHL K , SCHNELL G , ANDRIESSEN W
IPC: G11B15/60 , G11B20060101 , G11B15/00 , G11B15/26 , G11B23/04 , G11B23/08 , G11B23/087
Abstract: Guide elements for magnetic tapes wound or to be wound in the form of packs on flangeless spools, the guide elements being movable in the plane of rotation of the packs. At least part of the guide elements is located between the pack and the outermost winding and thus constantly guides the tape as it is wound or unwound, resulting in optimal tape guidance and consequently in a stable and accurate winding on the spool.
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公开(公告)号：BR7201845D0
公开(公告)日：1973-06-14
申请号：BR184572
申请日：1972-03-28
Applicant: BASF AG
Inventor： ANDRIESSEN W , UHL K , SCHNELL G , SCHAEFFER N , FITTERER H
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公开(公告)号：ZA722090B
公开(公告)日：1973-01-31
申请号：ZA722090
申请日：1972-03-28
Applicant: BASF AG
Inventor： FITTERER H , SCHNELL G , SCHAEFFER N , ANDRIESSEN W , UHL K
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公开(公告)号：CA922981A
公开(公告)日：1973-03-20
申请号：CA92822
申请日：1970-09-10
Applicant: BASF AG
Inventor： SCHNELL G , GROSSELFINGER H , HARTMANN H , WERST G , HARTMANN W , BIPP H
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