公开(公告)号：US07006271B2

公开(公告)日：2006-02-28

申请号：US09827097

申请日：2001-04-06

申请人： Nobuaki Ono ,  Akihisa Itabashi

发明人： Nobuaki Ono ,  Akihisa Itabashi

IPC分类号： G02B26/08

CPC分类号： G02B26/127 ,  G02B26/124

摘要： A coupling lens couples a beam emitted from a light source. A light deflector deflects the beam from the coupling lens at a uniform angular velocity. A line-image imaging optical system is disposed between the coupling lens and light deflector, and causes the beam to image a line image long along main scanning directions on or in the vicinity of a deflection reflective surface of the light deflector. A scanning and imaging optical system causes the beam deflected by the light deflector to image a beam spot on a medium to be scanned. In an optical housing, the light source, coupling lens, light deflector, line-image imaging optical system and scanning and imaging optical system are disposed, and contained. A plurality of holding and fixing locations are provided for holding and fixing a light-source part including the light source and coupling lens is provided in at least one of the light-source part and optical housing.

摘要翻译： 耦合透镜耦合从光源发射的光束。 光偏转器以均匀的角速度使耦合透镜的光束偏转。 线耦合透镜和光偏转器之间设置线像成像光学系统，并且使光束沿着偏光反射面的偏转反射面上或其附近的主扫描方向成像线图像。 扫描和成像光学系统使由光偏转器偏转的光束在待扫描的介质上成像束斑。 在光学壳体中，设置并包含光源，耦合透镜，光偏转器，线图像成像光学系统和扫描和成像光学系统。 提供多个保持固定位置用于保持和固定包括光源的光源部分，耦合透镜设置在光源部分和光学壳体中的至少一个中。

公开(公告)号：US20050105156A1

公开(公告)日：2005-05-19

申请号：US11016743

申请日：2004-12-21

申请人： Nobuaki Ono ,  Tomohiro Nakajima ,  Akihisa Itabashi ,  Kenichi Takanashi ,  Tomoya Ohsugi

发明人： Nobuaki Ono ,  Tomohiro Nakajima ,  Akihisa Itabashi ,  Kenichi Takanashi ,  Tomoya Ohsugi

IPC分类号： B41J2/44 ,  G02B26/08 ,  G02B26/10 ,  G02B26/12 ,  H01J3/14 ,  H01J5/16 ,  H04N1/036 ,  H04N1/04 ,  H04N1/113 ,  H04N1/12 ,  H04N1/191 ,  H04N1/50

CPC分类号： H04N1/0414 ,  B41J2/473 ,  G02B26/123 ,  G02B26/124 ,  H04N1/0402 ,  H04N1/0437 ,  H04N1/0455 ,  H04N1/1135 ,  H04N1/12 ,  H04N1/1911 ,  H04N1/506

摘要： An optical scanning apparatus includes light sources, an aperture having, and coupling lenses. Numbers of the light sources and the coupling lenses are equal to each other and the apparatus satisfies an inequality 12.7

摘要翻译： 光学扫描装置包括光源，具有孔和耦合透镜的孔。 光源和耦合透镜的数量彼此相等，并且该装置满足不等式12.7 <（Dxbeta xdpi）/（2xNA）<38.1和 （n-1）式，其中D表示式（1）的狭缝的宽度， 光圈，β0表示光束打开角度，mo表示总横向放大率，dpi表示每英寸点数，NA表示数值孔径，β表示 正开度角ββ表示负开角，n表示数。 此外，提供了使用该光学扫描装置的图像形成装置和图像形成方法。

公开(公告)号：US06839157B2

公开(公告)日：2005-01-04

申请号：US10319624

申请日：2002-12-16

申请人： Nobuaki Ono ,  Tomohiro Nakajima ,  Akihisa Itabashi ,  Kenichi Takanashi ,  Tomoya Ohsugi

发明人： Nobuaki Ono ,  Tomohiro Nakajima ,  Akihisa Itabashi ,  Kenichi Takanashi ,  Tomoya Ohsugi

IPC分类号： B41J2/44 ,  G02B26/08 ,  G02B26/10 ,  G02B26/12 ,  H01J3/14 ,  H01J5/16 ,  H04N1/036 ,  H04N1/04 ,  H04N1/113 ,  H04N1/12 ,  H04N1/191 ,  H04N1/50

CPC分类号： H04N1/0414 ,  B41J2/473 ,  G02B26/123 ,  G02B26/124 ,  H04N1/0402 ,  H04N1/0437 ,  H04N1/0455 ,  H04N1/1135 ,  H04N1/12 ,  H04N1/1911 ,  H04N1/506

摘要： An optical scanning apparatus includes light sources, an aperture having, and coupling lenses. Numbers of the light sources and the coupling lenses are equal to each other and the apparatus satisfies an inequality 12.7

摘要翻译： 光学扫描装置包括光源，具有孔和耦合透镜的孔。 光源和耦合透镜的数量彼此相等，并且该装置满足不等式12.7 <（DXBETA0xm0xxdpi）/（2xNA）<38.1和等式β0=（β+ -beta - ）/（n-1），其中 D表示孔的狭缝的宽度，β0表示光束打开角度，mo表示总横向放大率，dpi表示每英寸点数，NA表示数值孔径，β+表示正开度角，β表示 负开角度，n表示数字。 此外，提供了使用该光学扫描装置的图像形成装置和图像形成方法。

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。