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    Optical beam scanning apparatus including a cylindrical lens having its opposite ends closer to the scanned plane than its medial portion
    5.
    发明授权
    Optical beam scanning apparatus including a cylindrical lens having its opposite ends closer to the scanned plane than its medial portion 失效
    光束扫描装置包括其相对端比其内侧更靠近扫描平面的柱面透镜

    公开(公告)号：US4639072A

    公开(公告)日：1987-01-27

    申请号：US676591

    申请日：1984-11-29

    申请人： Toyotsugu Itoh ,  Toshio Muramatsu

    发明人： Toyotsugu Itoh ,  Toshio Muramatsu

    IPC分类号： B41J2/44 ,  G02B7/02 ,  G02B26/10 ,  G02B26/12 ,  G02B27/00 ,  H04N1/113

    CPC分类号： G02B27/0031 ,  G02B26/124

    摘要： An optical beam scanning apparatus wherein a beam shaping device for forming a flat light beam which has a large width in the scanning direction and which is substantially parallel with the direction of the optical axis is disposed between a light source and rotary polygonal mirror, and a cylindrical lens bent to have both ends in the longitudinal direction thereof approaching to the scanned plane is disposed between a condensing lens for condensing the light beam reflected by the rotary polygonal mirror and a scanned plane in the vicinity of the latter. The rotary polygonal mirror and the scanned plane are arranged to have a conjugate relation with each other from geometrical optics. The light beam is converged so as to generate the beam waist near the scanned plane.

    摘要翻译： 一种光束扫描装置，其特征在于，在光源和旋转多面镜之间设置用于形成平面光束的光束整形装置，该平坦光束在扫描方向上具有大的宽度并且基本上与光轴方向平行， 弯曲成沿其纵向方向的两端接近扫描平面的圆柱形透镜设置在用于将由旋转多面镜反射的光束和在其附近的扫描平面聚光的聚光透镜之间。 旋转多面镜和扫描平面被布置成从几何光学器件彼此具有共轭关系。 光束会聚，以便在扫描平面附近产生光束腰。

    Dynamic pressure bearing
    6.
    发明授权
    Dynamic pressure bearing 失效
    动压轴承

    公开(公告)号：US5711612A

    公开(公告)日：1998-01-27

    申请号：US540080

    申请日：1995-10-06

    申请人： Masao Itoh ,  Toyotsugu Itoh ,  Yoshio Iwamura

    发明人： Masao Itoh ,  Toyotsugu Itoh ,  Yoshio Iwamura

    IPC分类号： F16C17/10 ,  F16C33/10 ,  G02B26/12

    CPC分类号： F16C33/107 ,  F16C17/107 ,  G02B26/121

    摘要： In a dynamic pressure bearing, a dynamic pressure-generating groove is provided to one of a thrust bearing surface and a part of a rotator facing the thrust bearing surface on one of a first and second thrust bearings, and a thrust bearing surface and a part of the rotator on the other one of the first and second thrust bearings which is not provided with the dynamic pressure-generating groove are smoothed so that the smoothed surfaces are formed.

    摘要翻译： 在动态压力轴承中，在第一和第二止推轴承中的一个上的止推轴承表面和面向推力轴承表面的转子的一部分上提供动态压力产生槽，推力轴承表面和部件 没有设置有动压发生槽的第一推力轴承和第二推力轴承中的另一个的旋转器被平滑化，从而形成平滑的表面。

    Method for producing a polygon mirror
    7.
    发明授权
    Method for producing a polygon mirror 失效
    多角镜的制造方法

    公开(公告)号：US5463503A

    公开(公告)日：1995-10-31

    申请号：US163036

    申请日：1993-12-06

    申请人： Sunao Kawada ,  Masataka Inagi ,  Yoshio Iwamura ,  Toyotsugu Itoh ,  Takayoshi Hashimoto

    发明人： Sunao Kawada ,  Masataka Inagi ,  Yoshio Iwamura ,  Toyotsugu Itoh ,  Takayoshi Hashimoto

    IPC分类号： B23B27/20 ,  G02B26/12 ,  G02B5/08 ,  B23B3/00

    CPC分类号： B23B27/20 ,  Y10T407/27 ,  Y10T82/10

    摘要： A polygon mirror is produced using a diamond tool. The diamond tool includes a major cutting edge and an end cutting edge. The major cutting edge is formed straight by a rake face and a side flank, the major cutting edge having a first side and a second side. The end cutting edge is formed straight by the rake face and a front flank, the end cutting edge having a third side. A microscopic cutting edge is arranged between the second side and the third side so that the major cutting edge and the microscopic cutting edge together create a first corner at the second side, and the end cutting edge and the microscopic cutting edge create a second corner at the third side. The rake face is inclined downward from the second corner to the first side. The microscopic cutting edge is between 0.1 mm and 0.4 mm in a direction of the end cutting edge. The microscopic cutting edge at the first corner is swept back by an amount between 0.21 .mu.m and 0.6 .mu.m from an extended line of the end cutting edge in a direction perpendicular to the extended line. The material being operated on by the diamond cutting tool is held and fed relatively to the diamond tool so that the material is cut with the major cutting edge, is thereafter microscopically cut with the microscope cutting edge, and is thereafter burnish-finished with the end cutting edge.

    摘要翻译： 使用金刚石工具生产多面镜。 金刚石工具包括主切削刃和端切削刃。 主切削刃由前刀面和侧齿形成直线，主切削刃具有第一侧和第二侧。 末端切削刃由前刀面和前侧面形成为直线，端切削刃具有第三侧。 在第二侧和第三侧之间布置微观切削刃，使得主切削刃和微切削刃一起在第二侧产生第一角，并且端切削刃和微切削刃在第 第三面。 前刀面从第二角向下倾斜到第一侧。 微切割刃在端切削刃的方向上为0.1mm至0.4mm。 第一角处的微观切削刃沿着与延伸线垂直的方向从末端切削刃的延长线扫过0.21μm至0.6μm之间的量。 通过金刚石切割工具操作的材料相对于金刚石工具保持并进给，使得材料用主切削刃切割，然后用显微镜切割刃进行显微切割，然后用端部进行抛光加工 前沿。

    Injection molding method
    8.
    发明授权
    Injection molding method 失效
    注塑法

    公开(公告)号：US5656228A

    公开(公告)日：1997-08-12

    申请号：US490838

    申请日：1995-06-15

    申请人： Masaki Fujii ,  Shinjiro Saihara ,  Toyotsugu Itoh

    发明人： Masaki Fujii ,  Shinjiro Saihara ,  Toyotsugu Itoh

    IPC分类号： B29C45/73 ,  B29C45/00 ,  B29C45/57 ,  B29D11/00 ,  B29L11/00

    CPC分类号： B29D11/00009 ,  B29C45/00 ,  B29L2011/0016

    摘要： In an injection molding method, a resin is injected into a cavity of a mold in such a manner that a pressure ratio of a cavity surface pressure in the cavity to a cylinder pressure of an injection molding device is not less than 0.65, a first pressure keeping process to keep the cylinder pressure at a constant is conducted after the filling step, the cylinder pressure is increased so that the cavity surface pressure in the cavity is 0.95 times or more larger than the pressure at the time that the cavity has been filled with the resin; and a second pressure keeping process to keep the changed increased pressure at least until a cavity surface temperature becomes lower than a glass transition temperature of the resin.

    摘要翻译： 在注射成型方法中，将树脂注射到模具的空腔中，使得空腔中的腔表面压力与注射成型装置的气缸压力的压力比不小于0.65，第一压力 在填充步骤之后进行将气缸压力保持在恒定的保持过程，气缸压力增加，使空腔中的空腔表面压力为空腔填充时的压力的0.95倍或更大 树脂; 以及第二压力保持过程，以保持改变的增加的压力至少直到腔表面温度变得低于树脂的玻璃化转变温度。

    Dynamic pressure bearing
    10.
    发明授权
    Dynamic pressure bearing 失效
    动压轴承

    公开(公告)号：US5538347A

    公开(公告)日：1996-07-23

    申请号：US405976

    申请日：1995-03-17

    申请人： Masao Itoh ,  Yuko Takahashi ,  Yoshio Iwamura ,  Toyotsugu Itoh

    发明人： Masao Itoh ,  Yuko Takahashi ,  Yoshio Iwamura ,  Toyotsugu Itoh

    IPC分类号： F16C33/10 ,  F16C32/06

    CPC分类号： F16C33/107 ,  F16C17/026 ,  F16C17/107

    摘要： A dynamic pressure generating bearing includes a rotational body, a radial bearing provided adjacent to a center of the rotational body to rotatably support the rotational body around the radial bearing and at least one thrust bearing provided on one end of the radial bearing. When the rotational body is stably rotated, a minimum clearance generated between the rotational body and the thrust bearing is always greater than a minimum clearance generated between the rotational body and the radial bearing.

    摘要翻译： 动态压力产生轴承包括旋转体，邻近旋转体的中心设置的径向轴承，以可旋转地支撑旋转体围绕径向轴承，以及设置在径向轴承的一端上的至少一个推力轴承。 当旋转体稳定地旋转时，在旋转体和推力轴承之间产生的最小间隙总是大于在旋转体和径向轴承之间产生的最小间隙。