Magnetic recording medium
    45.
    发明授权
    Magnetic recording medium 失效
    磁记录介质

    公开(公告)号:US4784914A

    公开(公告)日:1988-11-15

    申请号:US944114

    申请日:1986-12-22

    摘要: A magnetic recording medium comprising a nonmagnetic support and a magnetic recording layer provided on the support, said magnetic recording layer comprising a binder and a ferromagnetic powder dispersed therein, which is characterized in that said binder is composed of a resin component comprising:a vinyl chloride copolymer containing a repeating unit having at least one polar group selected from the group consisting of --SO.sub.3 M, --OSO.sub.3 M, --COOM and --PO(OM').sub.2, wherein M is hydrogen or an alkali metal atom, and M' is any one of hydrogen, an alkali metal atom and a lower hydrocarbon group, and a repeating unit having an epoxy group; anda polyurethane resin containing a repeating unit having at least one polar group selected from the group consisting of --SO.sub.3 M, --OSO.sub.3 M, --COOM and --PO(OM').sub.2, wherein M and M' have the same meanings as defined above.

    摘要翻译: 一种磁记录介质,包括设置在所述载体上的非磁性载体和磁记录层,所述磁记录层包含粘合剂和分散在其中的铁磁性粉末,其特征在于,所述粘合剂由树脂组分构成,所述树脂组分包括:氯乙烯 含有具有至少一个选自-SO 3 M,-OSO 3 M,-COOM和-PO(OM')2的极性基团的重复单元的共聚物,其中M是氢或碱金属原子,M'是任何一个 的氢,碱金属原子和低级烃基,以及具有环氧基的重复单元; 和含有至少一个选自-SO 3 M,-OSO 3 M,-COOM和-PO(OM')2的极性基团的重复单元的聚氨酯树脂,其中M和M'具有与上述相同的含义。

    Varifocal type finder
    46.
    发明授权
    Varifocal type finder 失效
    变焦型取景器

    公开(公告)号:US4715692A

    公开(公告)日:1987-12-29

    申请号:US653966

    申请日:1984-09-24

    CPC分类号: G02B15/04 G02B23/145

    摘要: In the disclosed finder, an auxiliary lens for changing the magnification power is inserted into the space between an objective lens and an eyepiece. The size of the viewfield frame is simultaneously changed to maintain a constant percentage of the viewfield of the finder. The required rate of change of magnification power that the auxiliary lens must attain to leave the size of the viewfield frame of the finder unchanged can be reduced with the advantage of minimizing the bulk and size of the finder.

    摘要翻译: 在所公开的取景器中,用于改变放大倍率的辅助透镜被插入到物镜和目镜之间的空间中。 视场框架的大小同时改变,以维持取景器视场的百分比不变。 可以通过使取景器的体积和尺寸最小化的优点来减少辅助透镜必须获得的使取景器的视场框架尺寸保持不变的所需的倍率变化率。

    Vari-focal objective lens of short total length
    47.
    发明授权
    Vari-focal objective lens of short total length 失效
    总焦距短焦点物镜

    公开(公告)号:US4679913A

    公开(公告)日:1987-07-14

    申请号:US750698

    申请日:1985-06-28

    CPC分类号: G02B15/161

    摘要: An objective lens comprising a front lens unit and a rear lens unit with the separation between the two lens units being varied to vary the focal length of the entire system, wherein the front lens unit has a positive refractive power and consists of a positive lens of strong convex curvature toward the front, a negative doublet lens of a negative lens and a positive lens cemented together in this order from the front, and a positive lens sub-unit, and the rear lens unit has a negative refractive power and comprises a positive lens and a negative lens. Particularly the double lens is so designed that the comatic aberration in the intermediate zone of the image frame is stabilized throughout the entire range of variation of the focal length, and the halo in the intermediate zone in the telephoto end is well corrected.

    摘要翻译: 一种包括前透镜单元和后透镜单元的物镜,其中两个透镜单元之间的间隔被改变以改变整个系统的焦距,其中前透镜单元具有正折射光焦度,并且由正透镜单元 前凸的强凸曲率,负透镜的负双折射透镜和正透镜从前面依次粘接在一起,正透镜子单元和后透镜单元具有负折光力并且包括正 透镜和负透镜。 特别地,双透镜被设计成使得图像帧的中间区域中的彗形像差在焦距变化的整个变化范围内是稳定的,并且远摄端的中间区域中的晕圈被很好地校正。

    Portable and wearable injector of mini size
    48.
    发明授权
    Portable and wearable injector of mini size 失效
    便携式和可佩戴的迷你尺寸的注射器

    公开(公告)号:US4640445A

    公开(公告)日:1987-02-03

    申请号:US683811

    申请日:1984-12-20

    申请人: Yasuyuki Yamada

    发明人: Yasuyuki Yamada

    摘要: A portable and wearable injector of mini size is disclosed, which may be operated for injection by means of a gas pressure and which is equipped with an injector syringe and a gas-impermeable flexible bag received in the syringe having one open end for injection and the other sealed end. The bag contains therein a gas-generating device for producing a pressure gas for expanding the bag in order to urge an infusion liquid through the open end of the syringe. As the gas-generating device there may be used an electric or chemical device.

    摘要翻译: 公开了一种迷你尺寸的便携式和可穿戴式注射器,其可以通过气体压力进行注射,并且其装备有注射器注射器和容纳在注射器中的气体不可渗透的柔性袋,其具有一个用于注射的开口端, 其他密封端。 袋中含有气体发生装置,用于产生用于膨胀袋的压力气体,以便促使输注液通过注射器的开口端。 作为气体发生装置,可以使用电气或化学装置。