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    Optical scanning device, image forming apparatus, and optical scanning method
    8.
    发明授权
    Optical scanning device, image forming apparatus, and optical scanning method 有权
    光学扫描装置，成像装置和光学扫描方法

    公开(公告)号：US06862123B2

    公开(公告)日：2005-03-01

    申请号：US10608210

    申请日：2003-06-30

    申请人： Seizo Suzuki ,  Kenichi Takanashi

    发明人： Seizo Suzuki ,  Kenichi Takanashi

    IPC分类号： B41J2/44 ,  B41J2/47 ,  G02B26/10 ,  G02B26/12 ,  H01L23/051 ,  H01L23/36 ,  H01L25/07 ,  H04N1/113 ,  G02B26/08

    CPC分类号： H01L23/051 ,  B41J2/471 ,  G02B26/125 ,  H01L23/36 ,  H01L25/072 ,  H01L2924/0002 ,  H04N1/1135 ,  H04N2201/02495 ,  H01L2924/00

    摘要： An optical scanning device condenses a beam deflected by a light deflector, by a scanning and imaging lens toward a surface to be scanned to form a beam spot thereon, and scans the surface to be scanned by the beam spot. At least one lens of the scanning and imaging lens is configured so that a lens body thereof is held by a holding frame, wherein a rib surface at an end in a longitudinal direction of the holding frame is inclined so that a ghost light generated as a result of the deflected beam being reflected by the end in the longitudinal direction of the holding frame is changed in light path in a sub-scan direction.

    摘要翻译： 光学扫描装置将由光偏转器偏转的光束，通过扫描和成像透镜朝向待扫描的表面凝结，在其上形成光斑，并扫描由光点扫描的表面。 扫描和成像透镜的至少一个透镜被构造成使得其透镜体由保持框架保持，其中在保持框架的纵向方向上的端部处的肋表面倾斜，使得产生的重影为 沿着保持框架的纵向方向的端部反射的偏转光束的结果在副扫描方向上的光路中改变。

    Method and apparatus for optical scanning capable of performing a high speed and high pixel density scanning
    9.
    发明授权
    Method and apparatus for optical scanning capable of performing a high speed and high pixel density scanning 有权
    能进行高速高像素密度扫描的光学扫描方法和装置

    公开(公告)号：US06833940B2

    公开(公告)日：2004-12-21

    申请号：US10278878

    申请日：2002-10-24

    申请人： Seizo Suzuki ,  Kenichi Takanashi

    发明人： Seizo Suzuki ,  Kenichi Takanashi

    IPC分类号： G02B2608

    CPC分类号： G02B26/12

    摘要： An optical scanning apparatus using an underfilled or overfilled optical system includes a number M of light sources, first, second, and third optical scanning lens systems, and a rotary polygon mirror. The number M of light sources emit a laser light beam. The first optical scanning lens system performs a coupling process to the laser light beam. The second optical scanning lens system collects light of the laser light beam in an approximately linear state extended in a main scanning direction. The rotary polygon mirror has a number N of deflective reflection surfaces for deflecting the laser light beam. The third optical scanning lens system gathers the laser light beam from the rotary polygon mirror to form a beam spot on an imaging surface. In this optical scanning apparatus, the predetermined number M satisfies a condition: 3×Rp/Rmax≧M≧Rp/Rmax, wherein Rp and Rmax are defined as: Rp≡(Dpi/25.4)×(260×Ppm)/N, and Rmax≡(5.4×106)×√{N16/(A4×t)}, respectively.

    摘要翻译： 使用未填充或过满的光学系统的光学扫描装置包括M个光源，第一，第二和第三光学扫描透镜系统和旋转多面镜。 光源的数量M发射激光束。 第一光学扫描透镜系统对激光束进行耦合处理。 第二光学扫描透镜系统以沿主扫描方向延伸的近似线性状态收集激光束的光。 旋转多面镜具有N个用于偏转激光束的偏转反射面。 第三光学扫描透镜系统从旋转多面镜收集激光束以在成像表面上形成束斑。 在这种光学扫描装置中，预定数量M满足条件：3×Rp / Rmax> = M> = Rp / Rmax，其中Rp和Rmax被定义为：Rp =（Dpi / 25.4）×（260xPpm）/ N，Rmax =（5.4×10 6）×√{N 16 /（A 4×xt）}。