公开(公告)号：US20080192319A1

公开(公告)日：2008-08-14

申请号：US12025343

申请日：2008-02-04

申请人： Naoki Miyatake ,  Yoshinori Hayashi ,  Takeshi Ueda ,  Naoto Watanabe ,  Daisuke Ichii

发明人： Naoki Miyatake ,  Yoshinori Hayashi ,  Takeshi Ueda ,  Naoto Watanabe ,  Daisuke Ichii

IPC分类号： G02B26/08

CPC分类号： G02B26/123

摘要： An optical scanning device includes a coupling optical system, a light source including a plurality of light emitting units for emitting light beams, and a deflector including a deflecting surface for deflecting the light beams. The coupling optical system is arranged on an optical path between the light source and the deflector so that the light beams enter the deflector at an angle with respect to a normal direction of the deflecting surface in a sub-scanning direction. The light emitting units are arranged two-dimensionally, and a distance between two light emitting units at opposite ends in a main scanning direction is smaller than a distance between two light emitting units at opposite ends in the sub-scanning direction.

摘要翻译： 光学扫描装置包括耦合光学系统，包括用于发射光束的多个发光单元的光源和包括用于偏转光束的偏转表面的偏转器。 耦合光学系统布置在光源和偏转器之间的光路上，使得光束在副扫描方向上相对于偏转表面的法线方向以一定角度进入偏转器。 发光单元被二维地布置，并且主扫描方向的相对端的两个发光单元之间的距离小于在副扫描方向的相对端的两个发光单元之间的距离。

公开(公告)号：US08228580B2

公开(公告)日：2012-07-24

申请号：US12119859

申请日：2008-05-13

申请人： Nobuyuki Arai ,  Yoshinori Hayashi ,  Naoto Watanabe

发明人： Nobuyuki Arai ,  Yoshinori Hayashi ,  Naoto Watanabe

IPC分类号： G02B26/08

CPC分类号： B41J2/471 ,  G02B26/123 ,  G02B26/127 ,  H04N1/1135 ,  H04N1/12 ,  H04N1/506 ,  H04N2201/0471 ,  H04N2201/04713 ,  H04N2201/04744

摘要： An optical scanner includes a plurality of scanning optical systems each of which scans a different surface to be scanned and includes a light source configured to emit a light beam, an optical deflector having a plurality of reflection surfaces, and a synchronization detector configured to receive the light beam deflected by the optical deflector and detect a timing to scan an effective area of the surface to be scanned with the deflected light beam before a scanning is started or after the scanning is completed. The synchronization detector of one of a pair of scanning optical systems is disposed on a scanning end side to determine the scanning timing, and the synchronization detector of the other one of the pair of scanning optical systems is disposed on a scanning start side to determine the scanning timing.

摘要翻译： 光学扫描仪包括多个扫描光学系统，每个扫描光学系统扫描要扫描的不同表面，并且包括被配置为发射光束的光源，具有多个反射表面的光学偏转器，以及配置成接收 光束由光学偏转器偏转，并且在扫描开始之前或扫描完成之后检测用偏转光束扫描的待扫描表面的有效区域的定时。 一对扫描光学系统中的一个的同步检测器被设置在扫描端侧以确定扫描定时，并且一对扫描光学系统中的另一个的同步检测器设置在扫描开始侧，以确定 扫描时序。

公开(公告)号：US08199179B2

公开(公告)日：2012-06-12

申请号：US11933800

申请日：2007-11-01

申请人： Yoshinori Hayashi ,  Naoto Watanabe ,  Daisuke Ichii ,  Nobuaki Kubo

发明人： Yoshinori Hayashi ,  Naoto Watanabe ,  Daisuke Ichii ,  Nobuaki Kubo

IPC分类号： B41J15/14 ,  B41J27/00

CPC分类号： H04N1/1135 ,  G02B26/124

摘要： A scanning unit in an image forming apparatus includes a light source, a coupling lens, an aperture, an image forming lens, and a polygon mirror. The light source includes a plurality of surface-emitting lasers. The coupling lens, the aperture, and the image forming lens are arranged on the optical path of light beams emitted by the light source. The polygon mirror deflects light beams of an image formed by the coupling lens towards a photosensitive drum for scanning. The focal length of the image forming lens in a sub-scanning direction is set to be equal to or smaller than an optical path length between the image forming lens and the aperture.

摘要翻译： 图像形成装置中的扫描单元包括光源，耦合透镜，孔，成像透镜和多面镜。 光源包括多个表面发射激光器。 耦合透镜，孔径和图像形成透镜布置在由光源发射的光束的光路上。 多面镜将由耦合透镜形成的图像的光束偏转到用于扫描的感光鼓。 图像形成透镜在副扫描方向上的焦距设定为等于或小于成像透镜和光圈之间的光程长度。

公开(公告)号：US07545547B2

公开(公告)日：2009-06-09

申请号：US11877020

申请日：2007-10-23

申请人： Yoshinori Hayashi ,  Nobuaki Kubo ,  Naoto Watanabe ,  Daisuke Ichii

发明人： Yoshinori Hayashi ,  Nobuaki Kubo ,  Naoto Watanabe ,  Daisuke Ichii

IPC分类号： G02B26/08

CPC分类号： G02B26/124 ,  G02B26/125

摘要： A scanning optical system leads the light fluxes deflected by the polygon mirror to a photosensitive drum. An absolute value of a lateral magnification in a main scanning direction is larger than an absolute value of a lateral magnification in a sub-scanning direction. Moreover, a beam diameter in the sub-scanning direction on a surface of the photosensitive drum is equal to or smaller than a beam diameter in the main scanning direction and larger than a scan line interval.

摘要翻译： 扫描光学系统将由多面镜偏转的光束引导到感光鼓。 主扫描方向的横向放大率的绝对值大于副扫描方向的横向倍率的绝对值。 此外，感光鼓的表面上的副扫描方向上的光束直径等于或小于主扫描方向上的光束直径并且大于扫描线间隔。

公开(公告)号：US09019333B2

公开(公告)日：2015-04-28

申请号：US14160930

申请日：2014-01-22

申请人： Yukio Itami ,  Yoshinori Hayashi ,  Naoki Miyatake ,  Naoto Watanabe ,  Yukihisa Yokoyama

发明人： Yukio Itami ,  Yoshinori Hayashi ,  Naoki Miyatake ,  Naoto Watanabe ,  Yukihisa Yokoyama

IPC分类号： B41J2/435 ,  B41J27/00 ,  G02B26/12

CPC分类号： G02B26/124 ,  G02B26/123

摘要： An optical scanning apparatus includes a light source; and a rotational polygon mirror having N reflecting surfaces, the rotational polygon mirror being configured to reflect a light flux emitted from the light source so that a scanning surface is scanned along a main-scanning direction with reflected from the rotational polygon mirror. A width of the light flux incident on the rotational polygon mirror in a direction corresponding to the main-scanning direction is smaller than a width of each reflecting surface of the rotational polygon mirror in the direction corresponding to the main-scanning direction.

摘要翻译： 光学扫描装置包括光源; 以及具有N个反射面的旋转多面镜，所述旋转多面镜被配置为反射从所述光源发射的光束，使得沿着所述旋转多面镜反射的主扫描方向扫描表面。 沿与主扫描方向相对应的方向入射到旋转多面镜的光束的宽度小于旋转多面反射镜的与主扫描方向对应的方向的各反射面的宽度。

公开(公告)号：US07969634B2

公开(公告)日：2011-06-28

申请号：US12021850

申请日：2008-01-29

申请人： Naoto Watanabe ,  Yoshinori Hayashi

发明人： Naoto Watanabe ,  Yoshinori Hayashi

IPC分类号： G02B26/08

CPC分类号： G02B26/12 ,  G02B26/123 ,  H04N1/0283 ,  H04N1/0301 ,  H04N1/047 ,  H04N1/12 ,  H04N2201/02456 ,  H04N2201/02458 ,  H04N2201/0246 ,  H04N2201/02462 ,  H04N2201/02497

摘要： An optical scanning device includes a light source, a deflector, and an image-forming optical system. The deflector includes a deflecting surface for deflecting light beams in a main scanning direction. The image-forming optical system includes two relay lenses having a positive power in the main scanning direction. The relay lenses cause main light beams of light beams emitted from the light source to cross near the deflecting surface in the main scanning direction.

摘要翻译： 光学扫描装置包括光源，偏转器和图像形成光学系统。 偏转器包括用于沿主扫描方向偏转光束的偏转表面。 图像形成光学系统包括在主扫描方向上具有正功率的两个中继透镜。 中继透镜使得从光源发射的光束的主光束在主扫描方向上在偏转表面附近交叉。

公开(公告)号：US07924487B2

公开(公告)日：2011-04-12

申请号：US12025343

申请日：2008-02-04

申请人： Naoki Miyatake ,  Yoshinori Hayashi ,  Takeshi Ueda ,  Naoto Watanabe ,  Daisuke Ichii

发明人： Naoki Miyatake ,  Yoshinori Hayashi ,  Takeshi Ueda ,  Naoto Watanabe ,  Daisuke Ichii

IPC分类号： G02B26/08

CPC分类号： G02B26/123

摘要： An optical scanning device includes a coupling optical system, a light source including a plurality of light emitting units for emitting light beams, and a deflector including a deflecting surface for deflecting the light beams. The coupling optical system is arranged on an optical path between the light source and the deflector so that the light beams enter the deflector at an angle with respect to a normal direction of the deflecting surface in a sub-scanning direction. The light emitting units are arranged two-dimensionally, and a distance between two light emitting units at opposite ends in a main scanning direction is smaller than a distance between two light emitting units at opposite ends in the sub-scanning direction.

摘要翻译： 光学扫描装置包括耦合光学系统，包括用于发射光束的多个发光单元的光源和包括用于偏转光束的偏转表面的偏转器。 耦合光学系统布置在光源和偏转器之间的光路上，使得光束在副扫描方向上相对于偏转表面的法线方向以一定角度进入偏转器。 发光单元被二维地布置，并且主扫描方向的相对端的两个发光单元之间的距离小于在副扫描方向的相对端的两个发光单元之间的距离。

公开(公告)号：US20080204840A1

公开(公告)日：2008-08-28

申请号：US12021850

申请日：2008-01-29

申请人： Naoto WATANABE ,  Yoshinori Hayashi

发明人： Naoto WATANABE ,  Yoshinori Hayashi

IPC分类号： G02B26/10

CPC分类号： G02B26/12 ,  G02B26/123 ,  H04N1/0283 ,  H04N1/0301 ,  H04N1/047 ,  H04N1/12 ,  H04N2201/02456 ,  H04N2201/02458 ,  H04N2201/0246 ,  H04N2201/02462 ,  H04N2201/02497

摘要： An optical scanning device includes a light source, a deflector, and an image-forming optical system. The deflector includes a deflecting surface for deflecting light beams in a main scanning direction. The image-forming optical system includes two relay lenses having a positive power in the main scanning direction. The relay lenses cause main light beams of light beams emitted from the light source to cross near the deflecting surface in the main scanning direction.

摘要翻译： 光学扫描装置包括光源，偏转器和图像形成光学系统。 偏转器包括用于沿主扫描方向偏转光束的偏转表面。 图像形成光学系统包括在主扫描方向上具有正功率的两个中继透镜。 中继透镜使得从光源发射的光束的主光束在主扫描方向上在偏转表面附近交叉。

公开(公告)号：US08773114B2

公开(公告)日：2014-07-08

申请号：US13071832

申请日：2011-03-25

申请人： Yoshinori Hayashi ,  Akihiko Komatsu

发明人： Yoshinori Hayashi ,  Akihiko Komatsu

IPC分类号： G01B7/14

CPC分类号： H01F7/1844 ,  G01B7/003 ,  G01D5/2046 ,  H01F7/1607 ,  H01F7/1653 ,  H01F2007/1684 ,  H01F2007/1692 ,  H01F2007/185 ,  H01F2007/1888

摘要： A displacement detecting apparatus of an electromagnetic actuator, including: an electromagnetic actuator including: a movable core; a drive coil which causes a displacement of the movable core; and a detection coil disposed at a position where a mutual coupling coefficient with the drive coil changes with the displacement, the actuator transmitting a drive force of the movable core to a mechanical system; a drive portion for supplying a drive current to the drive coil on the basis of a pulse width modulation signal; and a displacement detecting portion to which an output voltage of the detection coil is inputted, for outputting a displacement detection signal, wherein the displacement detecting portion includes: a sampling-signal generating portion for generating a sampling signal in synchronism with the pulse width modulation signal; and a synchronous sampling portion for outputting the displacement detection signal by sampling the output voltage in synchronism with the sampling signal.

摘要翻译： 一种电磁致动器的位移检测装置，包括：电磁致动器，包括：可动芯; 驱动线圈，其使所述可动铁芯移位; 以及检测线圈，其设置在与所述驱动线圈的相互耦合系数随位移而变化的位置，所述致动器将所述可动芯的驱动力传递到机械系统; 驱动部分，用于根据脉宽调制信号向驱动线圈提供驱动电流; 以及位移检测部分，其输入检测线圈的输出电压，用于输出位移检测信号，其中位移检测部分包括：采样信号产生部分，用于产生与脉宽调制信号同步的采样信号 ; 以及同步采样部分，用于通过与采样信号同步地对输出电压进行采样来输出位移检测信号。

公开(公告)号：US08624951B2

公开(公告)日：2014-01-07

申请号：US12362050

申请日：2009-01-29

申请人： Makoto Hirakawa ,  Yoshinori Hayashi

发明人： Makoto Hirakawa ,  Yoshinori Hayashi

IPC分类号： B41J15/14

CPC分类号： B41J2/471 ,  G02B5/189 ,  G02B26/124 ,  G02B27/42 ,  G02B27/4227 ,  G02B27/4283

摘要： An optical scanning device that scans a scanning surface with a light beam includes a light source that emits the light beam and a pre-deflector optical system that includes at least one diffractive optical element including a diffraction surface having no power at room temperature. The diffraction surface has a multi-step shape having a plurality of zone surfaces substantially perpendicular to an optical axis and a plurality of step surfaces each adjacent to each of the zone surfaces. On a cross sectional plane of the diffraction surface including the optical axis, each of the zone surfaces and each of the step surfaces makes an obtuse angle.

摘要翻译： 用光束扫描扫描表面的光学扫描装置包括发射光束的光源和包括至少一个衍射光学元件的预偏转光学系统，该衍射光学元件包括在室温下没有电力的衍射面。 衍射表面具有多个阶梯形状，其具有基本上垂直于光轴的多个区域表面和与每个区域表面相邻的多个台阶表面。 在包括光轴的衍射面的横截面上，每个区域表面和每个台阶表面都形成钝角。