公开(公告)号：US20080204852A1

公开(公告)日：2008-08-28

申请号：US11710907

申请日：2007-02-27

申请人： Taku Amada ,  Tomohiro Nakajima ,  Akihisa Itabashi ,  Seizo Suzuki

发明人： Taku Amada ,  Tomohiro Nakajima ,  Akihisa Itabashi ,  Seizo Suzuki

IPC分类号： G02F1/01

CPC分类号： G02F1/1313 ,  B41J2/473 ,  G02B7/008 ,  G02B26/123 ,  G02B26/124 ,  G02F2201/128 ,  G02F2203/18

摘要： An optical scanning apparatus, an image formation apparatus, and a phase modulation method are disclosed. The optical scanning apparatus includes a liquid crystal device for deflecting an optical beam irradiated by a semiconductor laser. The driving voltages for the liquid crystal device are controlled based on, e.g., the temperature of the liquid crystal device so that degradation of the diameter of a spot of the optical beam due to wavefront aberration is prevented.

摘要翻译： 公开了一种光学扫描装置，图像形成装置和相位调制方法。 光学扫描装置包括用于使由半导体激光器照射的光束偏转的液晶装置。 基于例如液晶装置的温度来控制液晶装置的驱动电压，从而防止由于波前像差导致的光束的光斑直径的劣化。

公开(公告)号：US06707480B2

公开(公告)日：2004-03-16

申请号：US10102633

申请日：2002-03-22

申请人： Minoru Ameyama ,  Satoru Tomita ,  Yasuyuki Shinkai ,  Nekka Matsuura ,  Katsuichi Ohta ,  Naoya Morohoshi ,  Akihisa Itabashi ,  Takanori Yano ,  Katsuhiro Aoki

发明人： Minoru Ameyama ,  Satoru Tomita ,  Yasuyuki Shinkai ,  Nekka Matsuura ,  Katsuichi Ohta ,  Naoya Morohoshi ,  Akihisa Itabashi ,  Takanori Yano ,  Katsuhiro Aoki

IPC分类号： G03G1500

CPC分类号： G03G21/1889 ,  G03G2215/0119 ,  G03G2221/1823

摘要： A plurality of types of engine units which have nonvolatile storage units and which have different performances, respectively, can be attached to an image formation apparatus main body in a replaceable manner. A control unit which controls the performance of an overall apparatus based on information stored in the storage units provided in the engine units, respectively, which are attached to the image formation apparatus main body, is provided in the image formation apparatus main body. Therefore, even if the image formation apparatus main body is common, the performance of the overall apparatus related to recording speed or resolution can be changed only by replacing the engine units different in performance. It is also possible to easily deal with various types of apparatuses.

摘要翻译： 具有非易失性存储单元并且具有不同性能的多种类型的发动机单元可以以可更换的方式附接到图像形成装置主体。 在图像形成装置主体中设置有控制单元，其基于分别安装在图像形成装置主体上的发动机单元中存储的存储单元中的信息来控制整体装置的性能。 因此，即使图像形成装置主体是共同的，也可以通过替换性能不同的发动机单元来改变与记录速度或分辨率有关的整体装置的性能。 也可以容易地处理各种类型的装置。

公开(公告)号：US06429956B2

公开(公告)日：2002-08-06

申请号：US09764262

申请日：2001-01-19

申请人： Akihisa Itabashi

发明人： Akihisa Itabashi

IPC分类号： G02B2608

CPC分类号： H04N1/4005 ,  B41J2/473 ,  G02B26/123 ,  H04N1/40031

摘要： In an optical scanning device of the present invention, a plurality of light sources emit a plurality of light beams. An optical system has a rotary polygonal mirror deflecting the light beams from the light sources, the optical system focusing the deflected light beams onto a scanned surface to form light spots thereon, the scanned surface being optically scanned with the light spots by a rotation of the rotary polygonal mirror. A light-amount monitoring unit monitors respective amounts of the light beams emitted by the light sources. A control unit controls the respective amounts of the light beams emitted by the light sources, based on detection signals output from the light-amount monitoring unit. The optical scanning device is configured to satisfy the formula: A

摘要翻译： 在本发明的光学扫描装置中，多个光源发射多个光束。 光学系统具有偏转来自光源的光束的旋转多面镜，光学系统将偏转的光束聚焦到扫描的表面上以在其上形成光斑，扫描的表面通过旋转的光点被光点扫描 旋转多面镜。 光量监视单元监视由光源发射的光束的相应量。 控制单元基于从光量监视单元输出的检测信号来控制由光源发射的光束的各自的量。 光学扫描装置被配置为满足以下公式：A

公开(公告)号：US5648864A

公开(公告)日：1997-07-15

申请号：US606350

申请日：1996-02-23

申请人： Akihisa Itabashi

发明人： Akihisa Itabashi

IPC分类号： G02B26/10 ,  G02B26/12 ,  G02B26/08

CPC分类号： G02B26/126

摘要： An image forming optical system for an equal speed scan converges a deflected light beam as a light spot onto a scanned face to perform an optical scanning operation at an equal speed. The image forming optical system has an f.theta. lens having an f.theta. function in a main scan-corresponding direction and converging the deflected light beam onto the scanned face in the main scan-corresponding direction. The image forming optical system also has a concave reflecting mirror having positive refracting power only in a cross scan-corresponding direction and converging the deflected light beam onto the scanned face in the cross scan-corresponding direction in cooperation with the f.theta. lens. A radius of curvature of the concave reflecting mirror in the cross scan-corresponding direction is increased from a central region thereof toward both end portions of the concave reflecting mirror in a longitudinal direction thereof in accordance with a predetermined formula of the second degree at a deflection angle .theta. of the deflected light beam deflected by the rotary polygon mirror.

摘要翻译： 用于等速扫描的图像形成光学系统将偏转的光束作为光斑会聚到扫描面上，以相等的速度进行光学扫描操作。 图像形成光学系统具有在主扫描对应方向上具有fθ功能的fθ透镜，并且将偏转的光束会聚到主扫描对应方向上的扫描面上。 图像形成光学系统还具有仅在十字扫描对应方向上具有正折射力的凹面反射镜，并且与偏光镜相关联地将偏转的光束会聚在与扫描对应的方向上的扫描面上。 根据在偏转中的第二度的预定公式，沿着反射扫描方向的凹面反射镜的曲率半径从其中心区域向凹反射镜的纵向方向的两端部增加 由旋转多面镜偏转的偏转光束的角度θ。

公开(公告)号：US5383754A

公开(公告)日：1995-01-24

申请号：US22332

申请日：1993-02-24

申请人： Hiroyasu Sumida ,  Akihisa Itabashi ,  Hiroshi Fukano ,  Hiroyasu Shijo ,  Hiroshi Takashima ,  Takeshi Ogiwara ,  Fumio Kishi

发明人： Hiroyasu Sumida ,  Akihisa Itabashi ,  Hiroshi Fukano ,  Hiroyasu Shijo ,  Hiroshi Takashima ,  Takeshi Ogiwara ,  Fumio Kishi

IPC分类号： B42C1/12 ,  G03G15/00 ,  H04N1/00 ,  B42C13/00

CPC分类号： G03G15/6541 ,  B42C1/125 ,  H04N1/00639 ,  H04N1/00795 ,  G03G2215/00818 ,  G03G2215/00827

摘要： An image forming apparatus having a device capable of identifying an image orientation to allow adequate processing to be executed and a device capable of binding sheets by determining a binding position. When an image orientation cannot be identified on the basis of a predetermined reference object, it is identified on the basis of another object. When the image orientation of a reference image and the image orientations of the other images are not coincident, an adequate procedure is executed to avoid an undesirable result. An orientation of a document image matching a predetermined adequate binding position is surely and accurately determined.

摘要翻译： 一种图像形成装置，具有能够识别图像取向以允许执行足够的处理的装置以及能够通过确定装订位置来装订纸张的装置。 当基于预定参考对象不能识别图像取向时，基于另一对象来识别图像取向。 当参考图像的图像取向和其他图像的图像取向不一致时，执行适当的过程以避免不期望的结果。 可靠且准确地确定与预定的适当装订位置相匹配的原稿图像的方向。

公开(公告)号：US5062679A

公开(公告)日：1991-11-05

申请号：US461020

申请日：1990-01-04

申请人： Akihisa Itabashi

发明人： Akihisa Itabashi

IPC分类号： G02B26/10 ,  G02B13/00 ,  G02B26/12

CPC分类号： G02B13/0005

摘要： In an optical scanner, a light beam from a light source is formed as a line image extending in a main scanning corresponding direction and is deflected at an equal angular velocity by a rotary polygon mirror having a reflecting face in the vicinity of an image forming position of the line image and is then formed by an image forming lens system in the shape of a spot on a scanned face to optically scan the scanned face. An f.theta. lens system focuses and forms the light beam deflected by the rotary polygon mirror as an image on the scanned face. The f.theta. lens system comprises a functional device having a function for connecting a reflecting position of the rotary polygon mirror and the scanned face in an approximately conjugate relation with respect to a secondary scanning direction and an f.theta. function with respect to a main scanning direction; and two groups of first and second lenses are sequentially arranged from the side of the rotary polygon mirror toward the scanned face side. The lenses have first to fourth lens faces providedr from the side of the rotary polygon mirror and have shapes on a deflecting plane sequentially composed of an arc, a straight line, a straight line and an arc from the first to fourth lens faces. The first and second lenses respectively have negative and positive refracting powers on a plane parallel to the deflecting plane.

摘要翻译： 在光学扫描器中，来自光源的光束形成为以主扫描对应方向延伸的线图像，并且通过具有在图像形成位置附近的反射面的旋转多面镜以相等的角速度偏转 并且然后由扫描面上的斑点形状的图像形成透镜系统形成以对扫描的面进行光学扫描。 fθ透镜系统将由旋转多面镜偏转的光束聚焦并形成扫描面上的图像。 fθ透镜系统包括功能装置，其功能是将旋转多面镜的反射位置和扫描面相对于副扫描方向和fθ函数相对于主扫描方向以大致共轭关系 ; 并且从旋转多面镜的侧面朝向扫描面侧依次配置两组第一透镜和第二透镜。 透镜具有从旋转多面镜一侧设置的第一至第四透镜面，并且在从第一至第四透镜面的弧线，直线，直线和弧线顺序地构成的偏转平面上具有形状。 第一透镜和第二透镜分别在平行于偏转平面的平面上具有负折射和正折射光焦度。

公开(公告)号：US5031979A

公开(公告)日：1991-07-16

申请号：US447859

申请日：1989-12-08

申请人： Akihisa Itabashi

发明人： Akihisa Itabashi

IPC分类号： G02B26/10 ,  G02B3/06 ,  G02B13/00

CPC分类号： G02B3/06 ,  G02B13/0005

摘要： In an f .theta. lens system in an optical scanner, a light beam from a light source is formed as a line image extending in a main scanning corresponding direction and is deflected at an equal angular velocity by a rotary polygon mirror having a reflecting face in the vicinity of an image forming position of the line image. The f .theta. lens system focuses and forms the light beam deflected by the rotary polygon mirror as an image on the scanned face and comprises a functional device having a function for connecting a reflecting position of the rotary polygon mirror and the scanned face in an approximately conjugate relation with respect to a secondary scanning direction, and an f .theta. function for moving the deflected scanning light beam on a scanned medium face at an approximately equal speed with respect to a main scanning direction; and two groups of first and second lenses sequentially arranged from the side of the rotary polygon mirror toward the scanned face side. A lateral magnification of the formed image on the scanned face with respect to the linear image in the secondary scanning direction is provided in a range of -9.15 to -2.20. The lenses have first to fourth lens faces having shapes on a deflecting plane respectively composed of a straight line, an arc, an arc and an arc. The first and second lenses have a positive refracting power on a plane parallel to the deflecting plane.

摘要翻译： 在光学扫描仪中的fθ透镜系统中，来自光源的光束被形成为在主扫描对应方向上延伸的线图像，并且通过具有反射面的旋转多面镜以相等的角速度偏转 线图像的图像形成位置的附近。 fθ透镜系统将由旋转多面镜偏转的光束聚焦并形成在扫描面上的图像，并且包括功能装置，其具有将旋转多面镜的反射位置和扫描面连接成大致共轭的功能 以及用于以相对于主扫描方向大致相等的速度将偏转的扫描光束移动到扫描的介质面上的fθ函数; 以及从旋转多面镜的侧面向扫描面侧依次配置的两组第一透镜和第二透镜。 在扫描面上相对于二次扫描方向上的线性图像的形成的图像的横向放大率在-9.15至-2.20的范围内。 透镜具有第一至第四透镜面，其具有分别由直线，弧形，弧形和弧形构成的偏转平面上的形状。 第一透镜和第二透镜在平行于偏转平面的平面上具有正折射光焦度。

公开(公告)号：US07450274B2

公开(公告)日：2008-11-11

申请号：US10840369

申请日：2004-05-07

申请人： Akihisa Itabashi ,  Taku Amada ,  Seizo Suzuki ,  Toshihiro Suzuki

发明人： Akihisa Itabashi ,  Taku Amada ,  Seizo Suzuki ,  Toshihiro Suzuki

IPC分类号： H04N1/04

CPC分类号： G02B26/123 ,  B41J2/473 ,  G02B26/0891

摘要： An optical scanning apparatus includes M number of light sources that includes M number of semiconductor lasers and M number of coupling lenses, where M is a positive integer, a deflecting scanning unit that deflects laser beams from the light sources to a surface to be scanned, and a transmission-type prism that deflects optical path of the laser beam from at least one of the light sources by an infinitesimal amount of angle. The prism is disposed between the light sources and the deflecting scanning unit, has an incident surface and an output surface nonparallel to each other, and can rotate around an axis of rotation substantially parallel to the optical path of the laser beam.

摘要翻译： 一种光学扫描装置，包括M个数量的包含M个半导体激光器和M个耦合透镜的光源，其中M是正整数;偏转扫描单元，其将来自光源的激光束偏转到待扫描的表面; 以及使来自至少一个光源的激光束的光路以极小的角度偏转的透射型棱镜。 棱镜设置在光源和偏转扫描单元之间，具有彼此不平行的入射表面和输出表面，并且可以围绕基本上平行于激光束的光路的旋转轴线旋转。

公开(公告)号：US06932271B2

公开(公告)日：2005-08-23

申请号：US09769510

申请日：2001-01-26

申请人： Tomohiro Nakajima ,  Akihisa Itabashi

发明人： Tomohiro Nakajima ,  Akihisa Itabashi

IPC分类号： G06K15/12 ,  G06K7/10

CPC分类号： G06K7/1098 ,  G06K15/1204

摘要： An optical scanning apparatus scans a surface to be scanned in a main scanning direction by simultaneously using a plurality of optical spots formed of a plurality of optical beans emitted from an illuminant, comprising: a light path deflecting part deflecting a light path of at least one of the optical beams, wherein the light path deflecting part is provided in light paths of the optical beams wherein the light path deflecting part may use a liquid crystal deflecting element formed of a liquid crystal element being controllable by an electronic signal to deflect the light path of the one of the optical beams.

摘要翻译： 光学扫描装置通过同时使用由从发光体发射的多个光学硅形成的多个光点同时扫描主扫描方向上的扫描面，其特征在于，包括：光路偏转部，其偏转至少一个光路 的光路，其中光路偏转部分设置在光束的光路中，其中光路偏转部分可以使用由电子信号控制的液晶元件形成的液晶偏转元件，以使光路偏转 的一个光束。

公开(公告)号：US20050024479A1

公开(公告)日：2005-02-03

申请号：US10840369

申请日：2004-05-07

申请人： Akihisa Itabashi ,  Taku Amada ,  Seizo Suzuki ,  Toshihiro Suzuki

发明人： Akihisa Itabashi ,  Taku Amada ,  Seizo Suzuki ,  Toshihiro Suzuki

IPC分类号： B41J2/47 ,  G02B26/08 ,  G02B26/12 ,  B41J15/14 ,  B41J27/00

CPC分类号： G02B26/123 ,  B41J2/473 ,  G02B26/0891

摘要： An optical scanning apparatus includes M number of light sources that includes M number of semiconductor lasers and M number of coupling lenses, where M is a positive integer, a deflecting scanning unit that deflects laser beams from the light sources to a surface to be scanned, and a transmission-type prism that deflects optical path of the laser beam from at least one of the light sources by an infinitesimal amount of angle. The prism is disposed between the light sources and the deflecting scanning unit, has an incident surface and an output surface nonparallel to each other, and can rotate around an axis of rotation substantially parallel to the optical path of the laser beam.

摘要翻译： 一种光学扫描装置，包括M个数量的包含M个半导体激光器和M个耦合透镜的光源，其中M是正整数;偏转扫描单元，其将来自光源的激光束偏转到待扫描的表面; 以及使来自至少一个光源的激光束的光路以极小的角度偏转的透射型棱镜。 棱镜设置在光源和偏转扫描单元之间，具有彼此不平行的入射表面和输出表面，并且可以围绕基本上平行于激光束的光路的旋转轴线旋转。