Photo-taking lens for an underwater camera
    42.
    发明授权
    Photo-taking lens for an underwater camera 失效
    摄影镜头用于水下摄像机

    公开(公告)号:US5257137A

    公开(公告)日:1993-10-26

    申请号:US855665

    申请日:1992-03-23

    CPC分类号: G02B13/00

    摘要: A lens for an underwater camera is comprised of a first lens unit having no refractive power or having weak refractive power, a second lens unit comprising a forward unit having negative refractive power and a rearward unit having positive refractive power, and having weak refractive power, a third lens unit having positive refractive power, and a fourth lens unit having negative refractive power, the first lens unit being fixed relative to the image plane, the second lens unit and the third lens unit being axially moved together on the optical axis toward the object side relative to the fourth lens unit.

    摘要翻译: 一种用于水下摄像机的透镜由不具有屈光力或具有弱屈光力的第一透镜单元组成,第二透镜单元包括具有负屈光力的正射单元和具有正折光力的后向单元,并且具有弱折射力, 具有正折光力的第三透镜单元和具有负屈光力的第四透镜单元,第一透镜单元相对于像面固定,第二透镜单元和第三透镜单元在光轴上一起轴向移动到 物体侧相对于第四透镜单元。

    Papermaking method
    47.
    发明授权
    Papermaking method 失效
    造纸方法

    公开(公告)号:US4952279A

    公开(公告)日:1990-08-28

    申请号:US289550

    申请日:1988-12-23

    IPC分类号: C08B31/12 D21H17/29

    CPC分类号: D21H17/29 C08B31/125

    摘要: Disclosed are a papermaking method comprising the steps of sheet-formation of an aqueous papermaking stock which contains a cellulose fiber or the said fiber and an inorganic filler, dewatering and drying, charaacterized by the addition of a starch ether derivative of a general formula (I): ##STR1## where St--O represents a starch molecule residue, R.sub.1, R.sub.2 and R.sub.3 independently represent an alkyl group having from 1 to 18 carbon atoms or a benzyl group, provided that two or more of these R.sub.1, R.sub.2 and R.sub.3 must not be a benzyl group or an alkyl group having from 5 to 18 carbon atoms at the same time, and any two of these R.sub.1, R.sub.2 and R.sub.3 may be bonded to form a cyclic structure, the said derivative containing the ether bond preferably in a degree of substitution of from 0.01 from 0.1, to the said papermaking stock in an amount of from 0.05 to 5.0% by weight of the cellulose fiber or the total of the said fiber and the inorganic filler in the said stock, as well as the said starch ether derivative of the formula (I) and a method for preparation of the said derivative.

    Electrostatic recording material
    48.
    发明授权
    Electrostatic recording material 失效
    静电记录材料

    公开(公告)号:US4752522A

    公开(公告)日:1988-06-21

    申请号:US847525

    申请日:1986-04-03

    摘要: An electrostatic recording material comprising a substrate treated for low electric resistance and a dielectric layer formed on the substrate and composed of a composition comprising an insulating resin having a volume specific resistance of at least 10.sup.12 .OMEGA.cm and a powder of an acrylonitrile-type polymer having a copolymerized acrylonitrile content of at least 95% by weight and containing substantially no ionic groups, said powder having a volume average particle size of from 1.5 to 4 .mu.m and a content of particles having a size exceeding 8 .mu.m as measured by a particle size distribution measuring apparatus, being at most 0.02% by number.

    摘要翻译: 一种静电记录材料,包括用于低电阻处理的基底和形成在基底上的电介质层,该电介质层由包含体积电阻率为至少1012欧米亚厘米的绝缘树脂和丙烯腈型聚合物的粉末组成的组合物组成, 共聚丙烯腈含量为至少95重量%且基本上不含离子基团,所述粉末具有1.5至4μm的体积平均粒度和通过颗粒测量的尺寸超过8μm的颗粒含量 尺寸分布测量装置,数量至多0.02%。

    Printing system and business partner selection method that selects an optimum business partner capable of delivering high-quality printed materials
    49.
    发明授权
    Printing system and business partner selection method that selects an optimum business partner capable of delivering high-quality printed materials 有权
    印刷系统和业务伙伴选择方法,选择能够提供高质量印刷材料的最佳业务伙伴

    公开(公告)号:US08867093B2

    公开(公告)日:2014-10-21

    申请号:US13482387

    申请日:2012-05-29

    申请人: Fumio Suzuki

    发明人: Fumio Suzuki

    摘要: A printing system includes a first storage part storing printing partners correlated with respective predetermined printing fields and respective printing quality evaluation degrees; a second storage part storing distribution partners correlated with respective delivery quality evaluation degrees; a printing partner selecting part configured to select a single printing partner whose predetermined printing field matches a printing field to which a print ordered by a user corresponds and whose printing evaluation degree is the highest among the printing partners; a distribution partner selecting part configured to select a single distribution partner whose delivery quality evaluation degree is the highest among the distribution partners; and an order placing part configured to place, via an electrical network, an order for a printing service for printing the print to the single printing partner and an order for a delivery service for delivering the print to the single distribution partner.

    摘要翻译: 打印系统包括:第一存储部分,其存储与各个预定打印区域相关联的打印伙伴和各自的打印质量评估度; 存储分配伙伴的第二存储部分与相应的递送质量评估度相关联; 打印合作伙伴选择部分,其被配置为选择其预定打印字段与由用户对应的打印对应的打印字段匹配并且其打印评估度在打印合作伙伴中最高的单个打印伙伴; 分配伙伴选择部分,被配置为选择分发伙伴中传送质量评估度最高的单个分发伙伴; 以及订单放置部件,其被配置为经由电网络将用于将所述打印打印的打印服务的订单放置到所述单个打印伙伴,以及用于将所述打印输送到所述单个分发伙伴的传送服务的订单。

    Variable power optical system for stereomicroscope
    50.
    发明授权
    Variable power optical system for stereomicroscope 有权
    立体显微镜可变功率光学系统

    公开(公告)号:US08482862B2

    公开(公告)日:2013-07-09

    申请号:US13161758

    申请日:2011-06-16

    摘要: An optical system including, in order from an object: a first lens group having positive refractive power; a second lens group having negative refractive power; a third lens group having positive refractive power; and a fourth lens group having negative refractive power. The second lens group has, in order from the object, a front group having negative refractive power and a rear group. In various embodiments, the following conditional expressions are satisfied, 0.4

    摘要翻译: 一种光学系统,从物体的顺序包括:具有正折射光焦度的第一透镜组; 具有负屈光力的第二透镜组; 具有正折射力的第三透镜组; 以及具有负屈光力的第四透镜组。 第二透镜组从物体起依次具有具有负屈光力的前组和后组。 在各种实施例中,满足以下条件表达式:0.4