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    Optical scanner, optical scanning method, scanning image forming optical system, optical scanning lens and image forming apparatus
    1.
    发明授权
    Optical scanner, optical scanning method, scanning image forming optical system, optical scanning lens and image forming apparatus 失效
    光学扫描仪，光学扫描方法，扫描成像光学系统，光学扫描透镜和图像形成装置

    公开(公告)号：US06999208B2

    公开(公告)日：2006-02-14

    申请号：US09955181

    申请日：2001-09-19

    申请人： Seizo Suzuki ,  Hiromichi Atsuumi ,  Kohji Sakai ,  Magane Aoki ,  Hiroyuki Suhara

    发明人： Seizo Suzuki ,  Hiromichi Atsuumi ,  Kohji Sakai ,  Magane Aoki ,  Hiroyuki Suhara

    IPC分类号： H04N1/04

    CPC分类号： G02B26/127

    摘要： An optical scanner which performs optical scanning of a surface to be scanned by deflecting a luminous flux having a wavelength λ from a light source by means of an optical deflector, and condensing the deflected flux toward the surface to be scanned through a scanning image forming optical system, thereby forming an optical spot on the surface to be scanned. The scanning image forming optical system has at least one lens, and when the focal length fσ in the main scanning direction at a surface accuracy σi is defined as follows: fσ={2.6846 λ×√(k)×fm2/ω2}−fm where, fm represents the focal length in the main scanning direction of the scanning image forming optical system; k represents the number of lens surfaces; ω represents the aimed spot diameter of the optical spot in the main scanning direction at an image height of 0; σI represents the surface accuracy of the i-th lens surface as counted from the optical deflector side; n represents the refractive index of material of the lens having the i-th lens surface; and 1/l represents the spatial frequency in the main scanning direction on the lens surface; then, the surface accuracy σi, the focal length fσ, the refractive index n, and the spatial frequency 1/L satisfy, for each lens surface, the following condition: 0

    摘要翻译： 一种光学扫描器，其通过借助于光学偏转器偏转来自光源的具有波长λ的光束来执行对要扫描的表面的光学扫描，并且通过扫描图像形成光学器件将被偏转的通量朝向被扫描的表面聚焦 从而在待扫描的表面上形成光斑。 扫描图像形成光学系统具有至少一个透镜，并且当以表面精度sigmai的主扫描方向的焦距f sigma定义如下时：fsigma = {2.6846lambdax√（k）xfm 2

    Optical scanning apparatus and image forming apparatus having defective light source detection
    7.
    发明授权
    Optical scanning apparatus and image forming apparatus having defective light source detection 有权
    具有缺陷光源检测的光学扫描装置和图像形成装置

    公开(公告)号：US06376837B1

    公开(公告)日：2002-04-23

    申请号：US09500731

    申请日：2000-02-09

    申请人： Akihisa Itabashi ,  Magane Aoki ,  Akira Kojima ,  Hiroyuki Suhara ,  Nobuaki Kubo ,  Tomoya Ohsugi

    发明人： Akihisa Itabashi ,  Magane Aoki ,  Akira Kojima ,  Hiroyuki Suhara ,  Nobuaki Kubo ,  Tomoya Ohsugi

    IPC分类号： H01J314

    CPC分类号： H04N1/1906 ,  B41J2/471 ,  G02B26/123 ,  G02B26/127 ,  G06K15/1261 ,  G06K2215/0085 ,  H04N1/1135 ,  H04N1/12 ,  H04N1/1911 ,  H04N2201/03108 ,  H04N2201/0471 ,  H04N2201/04744 ,  H04N2201/04755 ,  H04N2201/04756

    摘要： An optical scanning apparatus is constructed to detect one or more defective or damaged light emitting devices of a light source unit and forms images having substantially the same quality as that of the images formed when all of a plurality of light emitting devices of a light source of the apparatus are functioning normally even when any one of the plurality of light emitting devices are damaged or broken, without decreasing the image forming performance of the apparatus. The optical scanning apparatus detects one or more damaged or broken light emitting devices and then compensates for the light omitted due to the damaged or broken light emitting devices using the normally functioning light emitting devices without decreasing the image forming speed or quality of the optical scanning apparatus. In order to compensate for a defective light emitting device, the optical scanning apparatus uses various solutions such as increasing the rotating speed of the deflector while increasing the modulation speed of the light emitting devices by the same amount, increasing beam spot diameter in the subscanning direction, changing the output power of the light emitting devices on a surface to be scanned in order to increase beam spot diameter in the main scanning direction and the subscanning direction, and changing the focal length of the line image forming optical apparatus and increasing either the rotation speed of the deflector or the rotation speed of the surface to be scanned or photoconductive drum.

    摘要翻译： 光学扫描装置被构造为检测光源单元的一个或多个有缺陷或损坏的发光装置，并且形成具有与所有图像的质量基本相同的图像的图像， 即使当多个发光装置中的任何一个发光装置被损坏或破坏时，装置也正常工作，而不会降低装置的图像形成性能。 光扫描装置检测一个或多个损坏或破损的发光装置，然后补偿由于使用正常功能的发光装置的损坏或破损的发光装置而省略的光，而不降低光学扫描装置的图像形成速度或质量 。 为了补偿有缺陷的发光装置，光扫描装置使用各种解决方案，例如增加偏转器的旋转速度，同时增加发光装置的调制速度相同的量，增加副扫描方向上的光点直径 改变要扫描的表面上的发光装置的输出功率，以增加主扫描方向和副扫描方向上的光点直径，并且改变线图像形成光学装置的焦距并增加旋转 偏转器的速度或待扫描表面或感光鼓的旋转速度。

    Optical scanning device, image forming apparatus and liquid crystal device driving method
    8.
    发明申请
    Optical scanning device, image forming apparatus and liquid crystal device driving method 有权
    光学扫描装置，成像装置和液晶装置的驱动方法

    公开(公告)号：US20050179971A1

    公开(公告)日：2005-08-18

    申请号：US11032257

    申请日：2005-01-11

    申请人： Taku Amada ,  Seizo Suzuki ,  Akihisa Itabashi ,  Hiroyuki Suhara ,  Mitsuo Suzuki

    发明人： Taku Amada ,  Seizo Suzuki ,  Akihisa Itabashi ,  Hiroyuki Suhara ,  Mitsuo Suzuki

    IPC分类号： G02B26/12 ,  G02B26/08

    CPC分类号： G02B26/123

    摘要： An optical scanning device includes: a light source; a deflector deflecting light beam from the light source; a coupling lens carrying out coupling of the light beam from the light source; a first optical system leading the light beam from the coupling lens to the deflector; a scanning optical system leading the light beam deflected by the deflector to a to-be-scanned surface; and a phase-modulatable liquid crystal device disposed on a light path lying from the light source through the to-be-scanned surface and driven by an electric signal, wherein: the first optical system at least comprises an optical device having: a surface having power positive in a sub-scanning direction; and a surface having power positive in a main scanning direction.

    摘要翻译： 光学扫描装置包括：光源; 偏转器偏转来自光源的光束; 耦合透镜，其执行来自光源的光束的耦合; 第一光学系统，将光束从耦合透镜引导到偏转器; 扫描光学系统，其将由偏转器偏转的光束引导到被扫描表面; 以及相位可调的液晶装置，其设置在从光源通过被扫描表面并由电信号驱动的光路上，其中：所述第一光学系统至少包括光学装置，所述光学装置具有：具有 电源在副扫描方向为正; 以及在主扫描方向上具有正电的表面。

    Image forming method of exposing the surface of an image carrier with light and image forming apparatus
    10.
    发明授权
    Image forming method of exposing the surface of an image carrier with light and image forming apparatus 有权
    用光和图像形成装置曝光图像载体的表面的图像形成方法

    公开(公告)号：US09235154B2

    公开(公告)日：2016-01-12

    申请号：US14451815

    申请日：2014-08-05

    申请人： Hiroyuki Suhara ,  Hiroaki Tanaka ,  Kohji Sakai

    发明人： Hiroyuki Suhara ,  Hiroaki Tanaka ,  Kohji Sakai

    IPC分类号： B41J2/47 ,  G03G15/043

    CPC分类号： G03G15/043

    摘要： An image forming method includes: exposing a surface of an image carrier with a light based on an image pattern including an image portion and a non-image portion to form an electrostatic latent image corresponding to the image pattern. The image portion is made up of a plurality of pixels. Some of the pixels that make up the image portion are exposed with light of a first output value that is higher than a prescribed optical output value when the entire pixels corresponding to the image portion are exposed over a prescribed time period.

    摘要翻译： 一种图像形成方法包括：基于包括图像部分和非图像部分的图像图案，用光曝光图像载体的表面，以形成与图像图案相对应的静电潜像。 图像部分由多个像素组成。 当对应于图像部分的整个像素在规定的时间段内曝光时，构成图像部分的一些像素被曝光，该光的第一输出值高于规定的光学输出值。