公开(公告)号：US09174459B2

公开(公告)日：2015-11-03

申请号：US14199038

申请日：2014-03-06

申请人： Shigeaki Imai

发明人： Shigeaki Imai

IPC分类号： B41J2/47 ,  B41J2/45

CPC分类号： B41J2/451

摘要： An imaging system includes incidence faces composed of optical faces having an image focusing function; prisms; and exit faces. The incidence faces are arranged with a first pitch along a first axial direction. The prisms are arranged with a second pitch along the first axial direction. The exit faces are arranged with a third pitch along the first axial direction. The first axial direction is set as a Y direction. A normal line direction of a face top of an optical face of the incidence face in a plane perpendicular to the first axial direction is set as a X direction. A direction perpendicular to the Y direction and the X direction is set as a Z direction. In a XZ cross-section plane, a width of the prism in the Z direction is smaller than a width of optical face of the incidence face in the Z direction.

摘要翻译： 成像系统包括由具有图像聚焦功能的光学面构成的入射面; 棱镜 和退出面。 入射面沿着第一轴向方向以第一间距布置。 棱镜沿着第一轴向方向以第二间距布置。 出射面沿着第一轴向以第三间距布置。 将第一轴向设为Y方向。 在与第一轴向垂直的平面中的入射面的光学面的顶面的法线方向被设定为X方向。 将与Y方向和X方向垂直的方向设为Z方向。 在XZ剖面中，Z方向上的棱镜的宽度比Z方向上的入射面的光学面的宽度小。

公开(公告)号：US09116351B2

公开(公告)日：2015-08-25

申请号：US13224838

申请日：2011-09-02

申请人： Shigeaki Imai ,  Yukio Itami ,  Kensuke Masuda

发明人： Shigeaki Imai ,  Yukio Itami ,  Kensuke Masuda

IPC分类号： G02B26/08 ,  G02B5/09 ,  B41J2/44 ,  G02B26/12 ,  B41J2/47

CPC分类号： G02B26/124 ,  B41J2/442 ,  B41J2/473 ,  G02B5/09 ,  G02B26/123

摘要： Provided is an optical scanning device including: a plurality of light sources; an optical deflector that includes reflection surfaces that deflect different light beams toward opposite sides of the optical deflector; and a light-shielding member provided in an area between incident light beams emitted from the plurality of light sources. The light-shielding member is positioned such that a portion of the light-shielding member is in a light-shield area surrounded by a circumscribed circle of the optical deflector, a line tangent to the circumscribed circle and orthogonal to a Y direction, and the incident light beam, the Y direction being a direction parallel to a main scanning direction and passing through a rotation center of the optical deflector, the main scanning direction being a direction, in which surfaces of image carriers are scanned.

摘要翻译： 提供一种光学扫描装置，包括：多个光源; 光学偏转器，其包括使不同光束朝向光学偏转器的相对侧偏转的反射面; 以及设置在从所述多个光源发射的入射光束之间的区域中的遮光构件。 遮光部件被定位成使得遮光部件的一部分处于由光偏转器的外接圆包围的遮光区域中，与外接圆相切并与Y方向正交的线， 入射光束，Y方向是与主扫描方向平行的方向，并且穿过光偏转器的旋转中心，主扫描方向是图像载体的表面被扫描的方向。

公开(公告)号：US08725028B2

公开(公告)日：2014-05-13

申请号：US13179014

申请日：2011-07-08

申请人： Shigeaki Imai

发明人： Shigeaki Imai

IPC分类号： G03G21/00

CPC分类号： G03G21/185 ,  G03G2215/0132

摘要： An image forming apparatus includes: an image carrier unit that includes an image carrier that is to be rotated about a rotational driving shaft; a charging unit; an exposing unit including a light source substrate and a lens array; a developing unit; a transfer unit; and a fixing unit. The image carrier unit can be pulled out along the rotational driving shaft of the image carrier. The exposing unit is movable between a contacting position, at which the exposing unit abuts on a contacting surface of the image carrier unit to be positioned relative to the image carrier, and a retracted position, at which the exposing unit is away from the image carrier unit. At the contacting position, the contacting surface is closer to the exposing unit in an optical axial direction than a surface of the lens array is.

摘要翻译： 图像形成装置包括：图像载体单元，其包括将围绕旋转驱动轴旋转的图像载体; 充电单元; 曝光单元，包括光源基板和透镜阵列; 一个发展单位; 转运单位 和定影单元。 图像载体单元可以沿着图像载体的旋转驱动轴被拉出。 曝光单元可以在曝光单元抵靠相对于图像载体定位的图像载体单元的接触表面的接触位置和收缩位置之间移动，在该位置处，曝光单元远离图像载体 单元。 在接触位置，接触表面比透镜阵列的表面在光轴方向上更接近曝光单元。

公开(公告)号：US20130235144A1

公开(公告)日：2013-09-12

申请号：US13795534

申请日：2013-03-12

申请人： Shinsuke MIYAKE ,  Shigeaki Imai

发明人： Shinsuke MIYAKE ,  Shigeaki Imai

IPC分类号： B41J2/435 ,  G02B26/08

CPC分类号： G03G15/04036 ,  G02B3/0087 ,  G02B13/0005 ,  G02B26/10 ,  G02B26/125 ,  G03G15/0435

摘要： An optical device includes: a light source that emits a light beam; a deflector that deflects the light beam in a main-scanning direction; and a scanning/image-forming optical system that includes a scanning lens that causes the light beam deflected by the deflector to converge to a scanned surface to form an image on the scanned surface. The scanning lens has refractive index gradient. At least one surface of the scanning lens is a tilt-decentered surface that has a tilt angle, which depends on a position in the main-scanning direction, in a sub-scanning direction. The tilt angle is set so as to compensate for variation, which results from the refractive index gradient, in direction of the light beam in the sub-scanning direction.

摘要翻译： 光学装置包括：发射光束的光源; 偏转器，其在主扫描方向上偏转光束; 以及包括扫描透镜的扫描/图像形成光学系统，其使由偏转器偏转的光束会聚到扫描表面，以在扫描表面上形成图像。 扫描透镜具有折射率梯度。 扫描透镜的至少一个表面是在副扫描方向上具有取决于主扫描方向上的位置的倾斜角的倾斜偏心表面。 倾斜角被设定为补偿在副扫描方向上的光束的方向上由折射率梯度引起的变化。

公开(公告)号：US08014051B2

公开(公告)日：2011-09-06

申请号：US12396813

申请日：2009-03-03

申请人： Shigeaki Imai

发明人： Shigeaki Imai

IPC分类号： G02B26/08

CPC分类号： G03G15/326 ,  B41J2/471 ,  G02B26/123 ,  G03G15/0435 ,  G03G2215/0404

摘要： At least one of a coupling lens and a cylindrical lens has a diffraction lens surface having a ring-band structure with a height h between adjacent ring-bands. The diffraction lens surface has an area A having a shape similar to that of the ring-band structure with a height h′, where h≠h′. The ring-band structure has a function of correcting a fluctuation in focal position of the scanning beam on the scanning surface, and the area A has a function of expanding a focal depth of a light spot on the scanning surface.

摘要翻译： 耦合透镜和柱面透镜中的至少一个具有具有相邻环带之间的高度h的环带结构的衍射透镜表面。 衍射透镜表面具有与具有高度h'的环带结构的形状类似的区域A，其中h≠h'。 环带结构具有校正扫描表面上的扫描光束的焦点位置的变动的功能，并且区域A具有扩大扫描表面上的光点的焦点深度的功能。

公开(公告)号：US07619796B2

公开(公告)日：2009-11-17

申请号：US12394732

申请日：2009-02-27

申请人： Shigeaki Imai

发明人： Shigeaki Imai

IPC分类号： G02B26/08

CPC分类号： G02B27/58 ,  G02B26/125

摘要： An aperture has an aperture opening that transmits a predetermined portion of a light beam. A phase optical element changes a phase of a portion of a light beam. A scanning lens focuses the light beam into a beam spot on a scanning surface. The phase optical element has a function of increasing light intensity of a side-lobe of the scanning beam near the scanning surface. The aperture opening is set to satisfy 0.03≦(SR−SA)/SR≦0.20, where SR and SA are areas of a rectangle circumscribing the aperture opening and the aperture opening, respectively. The function of the phase optical element and the aperture expand a depth allowance of the beam spot.

摘要翻译： 孔具有透光光束的预定部分的孔径开口。 相位光学元件改变光束的一部分的相位。 扫描透镜将光束聚焦在扫描表面上的光斑中。 相位光学元件具有增加扫描表面附近的扫描光束的旁瓣的光强度的功能。 孔径开口设定为满足0.03 <=（SR-SA）/ SR <= 0.20，其中SR和SA分别是围绕孔径开口和孔径开口的矩形区域。 相位光学元件和孔径的功能扩大了光束点的深度余量。

公开(公告)号：US20090074437A1

公开(公告)日：2009-03-19

申请号：US12207047

申请日：2008-09-09

申请人： Jun Tanabe ,  Shigeaki Imai ,  Seizo Suzuki

发明人： Jun Tanabe ,  Shigeaki Imai ,  Seizo Suzuki

IPC分类号： G03G15/043 ,  G02B26/10 ,  G03G13/04

CPC分类号： G02B26/127 ,  G03G15/043 ,  G03G2215/0158

摘要： An optical scanning device acquires a displacement amount of each of scanning light beams in the main scanning direction, and corrects, based on the displacement amount, writing energy density at a write position such that a variation in image density due to a variation of the displacement amount is reduced. The light beams are used for scanning a target surface to write image data on the target surface. The writing energy density is an amount of light per unit surface area of the target surface.

摘要翻译： 光扫描装置获取扫描光束在主扫描方向上的位移量，并且基于位移量来校正写入位置处的写入能量密度，使得由于位移的变化引起的图像密度的变化 金额减少。 光束用于扫描目标表面以在目标表面上写入图像数据。 写入能量密度是目标表面的每单位表面积的光量。

公开(公告)号：US20090058979A1

公开(公告)日：2009-03-05

申请号：US12174899

申请日：2008-07-17

申请人： Kenichiroh SAISHO ,  Shigeaki Imai

发明人： Kenichiroh SAISHO ,  Shigeaki Imai

IPC分类号： B41J2/47 ,  G02B26/08 ,  B41J27/00

CPC分类号： G02B7/008 ,  B41J2/471 ,  G02B26/124 ,  G02B27/0031

摘要： An optical scanning device includes a light source, a pre-deflection optical system, a polygon mirror, and a scanning optical system. The pre-deflection optical system includes a coupling lens and a diffraction lens. A light output surface of the coupling lens is a phase shifting surface, while a light output surface of the diffraction lens is a diffractive surface. The absolute value of the focal length of the diffraction lens is longer than the absolute focal length of the coupling lens.

摘要翻译： 光学扫描装置包括光源，偏转前光学系统，多面镜和扫描光学系统。 预偏转光学系统包括耦合透镜和衍射透镜。 耦合透镜的光输出表面是相移表面，而衍射透镜的光输出表面是衍射表面。 衍射透镜的焦距的绝对值比耦合透镜的绝对焦距长。

公开(公告)号：US20080068678A1

公开(公告)日：2008-03-20

申请号：US11855883

申请日：2007-09-14

申请人： Mitsuo Suzuki ,  Shigeaki Imai

发明人： Mitsuo Suzuki ,  Shigeaki Imai

IPC分类号： H04N1/04

CPC分类号： H04N1/053 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/0082 ,  H04N2201/0471 ,  H04N2201/04732 ,  H04N2201/04744 ,  H04N2201/04749

摘要： An optical scanning apparatus which includes: a light source unit which emits a light beam; a deflection scanning device which deflects the light beam emitted from the light source unit; an optical scanning unit having a scanning imaging lens and which scans a surface to be scanned; and a light beam detector which detects a position in a sub-scanning direction of the light beam, and is disposed in a position maintaining a correlation, in a time-varying characteristic, between an amount of change of a position in the sub-scanning direction of the light beam on the surface to be scanned and an amount of change of a position in the sub-scanning direction of the light beam detected by the light beam detector, in which a difference between the amount of change of the position in the sub-scanning direction of the light beam on the surface to be scanned and the amount of change of the position in the sub-scanning direction of the light beam detected by the light beam detector is equal to or less than a set value.

摘要翻译： 一种光学扫描装置，包括：发射光束的光源单元; 偏转扫描装置，其使从所述光源单元发射的光束偏转; 具有扫描成像透镜并且扫描待扫描的表面的光学扫描单元; 以及光束检测器，其检测光束的副扫描方向上的位置，并且设置在保持时变特性中的相关性的位置之间，在副扫描中的位置的变化量 要被扫描的表面上的光束的方向和由光束检测器检测到的光束的副扫描方向上的位置的变化量，其中， 要扫描的表面上的光束的副扫描方向和由光束检测器检测的光束的副扫描方向上的位置的变化量等于或小于设定值。

公开(公告)号：US20050190420A1

公开(公告)日：2005-09-01

申请号：US11058673

申请日：2005-02-16

申请人： Shigeaki Imai ,  Tomohiro Nakajima

发明人： Shigeaki Imai ,  Tomohiro Nakajima

IPC分类号： G02B26/08 ,  G02B26/12

CPC分类号： G02B26/123

摘要： In a beam-spot position compensation method for use in an optical scanning device which scans a surface of a photosensitive medium by a light beam emitted by a light source, a plurality of sections are defined by dividing a scanning region on the scanned surface. An emission timing of the light beam for every section is adjusted so that a spacing between beam-spot positions corresponding to pixels of start and end of each section is changed by a predetermined amount. The sparseness or denseness of beam-spot position spacings of the plurality of sections in the whole scanning region is compensated.

摘要翻译： 在用于通过光源发射的光束扫描感光介质的表面的光学扫描装置中的光斑位置补偿方法中，通过划分扫描表面上的扫描区域来限定多个部分。 调整每个部分的光束的发射定时，使得对应于每个部分的开始和结束的像素的光束点位置之间的间隔改变预定量。 补偿了整个扫描区域中的多个部分的光束位置间隔的稀疏度或致密度。