Magnetic tape cassette with equalization of electrostatic charges
    2.
    发明授权
    Magnetic tape cassette with equalization of electrostatic charges 失效
    带静电电容均匀的磁带盒

    公开(公告)号:US4712148A

    公开(公告)日:1987-12-08

    申请号:US881855

    申请日:1986-07-03

    摘要: In a tape cassette, particularly a video tape cassette, equalization of electrostatic charges between the two faces of the tape is effected by a connector element or connector elements electrically connecting at least one of two electrically conducting guide elements contacting the front of the tape and provided on the two sides, respectively, of the cassette with at least the associated one of two electrically conducting tape deflecting elements provided in the two respective front corners of the tape cassette. In this manner sticking of the tape to the deflecting elements due to electrostatic attraction therebetween and also the build-up of electrostatic charges along the tape path parallel to the front of the cassette housing due to the transporting of such charges from the deflecting elements as a result of the tape travel, are counteracted.

    摘要翻译: 在磁带盒,特别是磁带盒中,带的两个面之间的静电电荷的均衡是通过连接器元件或连接器元件来实现的,该连接器元件或连接器元件电连接接触磁带前部的两个导电引导元件中的至少一个并提供 在盒的两侧分别具有设置在带盒的两个相应前角中的至少两个导电带偏转元件中的相关联的一个。 以这种方式,由于这些电荷从偏转元件的传输,由于静电吸引而将带粘附到偏转元件上,并且还使得沿着平行于磁带盒外壳的磁带路径的静电电荷积聚 磁带旅行的结果被抵消。

    Tape cassette and spring member therefor
    3.
    发明授权
    Tape cassette and spring member therefor 失效
    磁带盒和弹簧件

    公开(公告)号:US4557433A

    公开(公告)日:1985-12-10

    申请号:US507110

    申请日:1983-06-23

    摘要: A tape cassette, in particular a video cassette, comprises two flanged reels and, between the flanges of each reel, a spring member as a biassing means to prevent the tape from slipping off the roll or folding over. The spring members can be attached to the side walls or rear wall of the housing, and their free ends constantly bear against the peripheries of the tape rolls. In specific embodiment the spring member advantageously includes the braking spring for a reel-braking device. By using a conductive material on one or both sides of the spring member and appropriately arranging the spring member relative to a tape guide element or to an element grounded on the tape recorder, it is possible to directly prevent tape loop formation, which is a cause of tape slippage and folding-over. Moreover, tape winding and unwinding are improved.

    摘要翻译: 磁带盒,特别是录像带,包括两个带凸缘的卷轴,并且在每个卷轴的凸缘之间,弹簧部件作为偏置装置,以防止胶卷从卷筒上滑落或折叠。 弹簧构件可以附接到壳体的侧壁或后壁,并且它们的自由端不断地抵靠着带卷的周边。 在具体实施例中,弹簧构件有利地包括用于卷筒制动装置的制动弹簧。 通过在弹簧构件的一侧或两侧使用导电材料并且相对于带导向元件或与磁带录音机接地的元件适当地布置弹簧构件,可以直接防止形成磁带,这是一个原因 胶带滑动和折叠。 此外,磁带缠绕和退绕改善。

    Video tape cassette
    4.
    发明授权
    Video tape cassette 失效
    录像带

    公开(公告)号:US4621779A

    公开(公告)日:1986-11-11

    申请号:US738413

    申请日:1985-05-28

    摘要: A tape cassette, in particular a video cassette, comprises two flanged reels and, between the flanges of each reel, a spring member as a biassing means to prevent the tape from slipping off the roll or folding over. The spring members can be attached to the side walls or rear wall of the housing, and their free ends constantly bear against the peripheries of the tape rolls. In specific embodiment the spring member advantageously includes the braking spring for a reel-braking device. By using a conductive material on one or both sides of the spring member and appropriately arranging the spring member relative to a tape guide element or to an element grounded on the tape recorder, it is possible to directly prevent tape loop formation, which is a cause of tape slippage and folding-over. Moreover, tape winding and unwinding are improved.

    摘要翻译: 磁带盒,特别是录像带,包括两个带凸缘的卷轴,并且在每个卷轴的凸缘之间,弹簧部件作为偏置装置,以防止胶卷从卷筒上滑落或折叠。 弹簧构件可以附接到壳体的侧壁或后壁,并且它们的自由端不断地抵靠着带卷的周边。 在具体实施例中,弹簧构件有利地包括用于卷筒制动装置的制动弹簧。 通过在弹簧构件的一侧或两侧使用导电材料并且相对于带导向元件或与磁带录音机接地的元件适当地布置弹簧构件,可以直接防止形成磁带,这是一个原因 胶带滑动和折叠。 此外,磁带缠绕和退绕改善。

    Guide system and magnetic tape cassette comprising such a system
    5.
    发明授权
    Guide system and magnetic tape cassette comprising such a system 失效
    包括这种系统的导向系统和磁带盒

    公开(公告)号:US4625252A

    公开(公告)日:1986-11-25

    申请号:US411606

    申请日:1982-08-25

    摘要: A tape guide system, especially a tape guide system for a magnetic tape cassette, comprising conductive connecting means between the tape guide elements and/or the front and back of the tape, prevents the tape from blocking, slipping from the tape reels, or folding over. In practical embodiments, pieces of flexible conductive plastics film are arranged in the vicinity of the guide elements. The novel tape guide system can be used in any type of magnetic tape transport mechanism in which increased friction occurs when the tape is transported, especially in video cassettes for all systems.

    摘要翻译: 磁带引导系统,特别是用于磁带盒的磁带引导系统,包括磁带引导元件之间的导电连接装置和/或磁带的前后之间,防止磁带阻塞,从磁带卷轴滑落或折叠 过度。 在实用的实施例中,柔性导电塑料膜片布置在引导元件附近。 新颖的导带系统可以用于任何类型的磁带传送机构,其中当传送带时,特别是在用于所有系统的录像带中发生增加的摩擦。

    Magnetic recording media
    9.
    发明授权
    Magnetic recording media 失效
    磁记录媒体

    公开(公告)号:US4666781A

    公开(公告)日:1987-05-19

    申请号:US759298

    申请日:1985-07-26

    摘要: Magnetic recording media comprising a non-magnetic substrate and a magnetic layer comprising a finely divided magnetic material dispersed in an organic solvent soluble, crosslinkable, essentially linear, thermoplastic polyurethane which possesses acrylate side and terminal groups wherein said polyurethane is prepared by reacting poly- and/or diisocyanates with a mixture of (a) methacrylate - or acrylate - diols having molecular weights of from 146 to 3,000, (b) monoesters of methacrylic or acrylic acid and a diol having a molecular weight of from 116 to 300, and (c) other organic polydiol compounds which have molecular weights of from 400 to 5,000.

    摘要翻译: 包含非磁性基底和磁性层的磁性记录介质包括分散在有机溶剂可溶性,可交联的,基本上线性的热塑性聚氨酯中的细碎磁性材料,其具有丙烯酸酯侧和端基,其中所述聚氨酯通过聚 (a)分子量为146〜3000的(a)甲基丙烯酸酯或丙烯酸酯 - 二醇的混合物的二异氰酸酯,(b)甲基丙烯酸或丙烯酸的单酯和分子量为116〜300的二醇和(c )分子量为400至5,000的其它有机聚二醇化合物。