Light-beam deflecting apparatus, manufacturing method of light-beam deflecting apparatus and image-forming apparatus
    1.
    发明授权
    Light-beam deflecting apparatus, manufacturing method of light-beam deflecting apparatus and image-forming apparatus 有权
    光束偏转装置,光束偏转装置的制造方法和图像形成装置

    公开(公告)号:US06574023B2

    公开(公告)日:2003-06-03

    申请号:US09908046

    申请日:2001-07-18

    IPC分类号: G02B2608

    CPC分类号: G02B26/121

    摘要: A light-beam deflecting apparatus is provided in which a polygon mirror is pushed against a flange to hold it stationary. The light-beam deflecting apparatus includes a base member; a polygon mirror rotatable with respect to the base member; a flange contacting the polygon mirror to hold the polygon mirror; and a pushing member to push the polygon mirror against the flange. One or both of contacting surfaces of the polygon mirror and the flange is/are finished to a surface roughness of Ry, which fulfills a first formula of Ry>3 &mgr;m or a second formula of 3 &mgr;m≦Ry≦20 &mgr;m.

    摘要翻译: 提供了一种光束偏转装置,其中将多面镜推向凸缘以保持其固定。 光束偏转装置包括:基座部件; 相对于基座构件可旋转的多面镜; 接触多面镜以保持多面镜的凸缘; 以及将多面镜推向凸缘的推动构件。 多面镜和凸缘的接触表面中的一个或两个被完成为Ry的表面粗糙度,其满足Ry>3μm的第一公式或3μm的第二公式<= Ry <=20μm。

    Rotary apparatus with asymmetrically formed dynamic pressure generating grooves
    2.
    发明授权
    Rotary apparatus with asymmetrically formed dynamic pressure generating grooves 有权
    具有不对称形成的动压产生槽的旋转装置

    公开(公告)号:US06276831B1

    公开(公告)日:2001-08-21

    申请号:US09472094

    申请日:1999-12-23

    IPC分类号: F16C3206

    摘要: A rotary apparatus includes: a radial fixed member; a rotary unit rotatably supported on the radial fixed member; a radial dynamic pressure bearing portion at which the radial fixed member faces the rotary unit; and dynamic pressure generating grooves formed on the radial dynamic pressure bearing portion. The dynamic pressure generating grooves are asymmetrically formed with respect to a rotary axis of the rotary unit.

    摘要翻译: 旋转装置包括:径向固定构件; 可旋转地支撑在径向固定构件上的旋转单元; 径向动压轴承部分,其中径向固定构件面向旋转单元; 以及形成在径向动压承受部上的动压产生槽。 动压产生槽相对于旋转单元的旋转轴线不对称地形成。

    Dynamic pressure bearing
    3.
    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

    IPC分类号: F16C33/10 F16C32/06

    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。