公开(公告)号：US5499045A

公开(公告)日：1996-03-12

申请号：US125583

申请日：1993-09-23

申请人： Kenji Takeshita ,  Nobuo Kanai ,  Hitoshi Kageyama

发明人： Kenji Takeshita ,  Nobuo Kanai ,  Hitoshi Kageyama

IPC分类号： B41J2/44 ,  B41J2/47 ,  G02B26/10 ,  G02B26/12

CPC分类号： G02B26/125 ,  B41J2/471

摘要： A plurality of holding members individually hold some of a plurality of lenses in a scanning optical system. A base member holds and connects a plurality of the holding members at predetermined positional relations with rigidity higher than that of the holding member, and is attached to a structural member of an image forming apparatus.

摘要翻译： 多个保持构件在扫描光学系统中分别保持多个透镜中的一些。 基部构件以比保持构件的刚性高的预定位置关系固定并连接多个保持构件，并且附接到图像形成装置的结构构件。

公开(公告)号：US5561743A

公开(公告)日：1996-10-01

申请号：US486599

申请日：1995-06-07

申请人： Nobuo Kanai ,  Hitoshi Kageyama ,  Kenji Takeshita

发明人： Nobuo Kanai ,  Hitoshi Kageyama ,  Kenji Takeshita

IPC分类号： G02B26/12 ,  H04N1/053 ,  H04N1/113 ,  H04N1/12 ,  H04N1/40 ,  H04N1/23

CPC分类号： H04N1/4005 ,  G02B26/126 ,  H04N1/053 ,  H04N1/40037 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/0471 ,  H04N2201/04787

摘要： A copying machine for forming an image by scanning a laser beam which is emitted from an optical system on a photosensitive member. Photosensors are provided at optically equivalent positions to a beginning portion and an end portion of a scanning line on a photosensitive member. A scanning time of a laser beam in the main scanning direction is measured by these photosensors. The measured time and a standard time for a copy magnification set by an operator are compared, and a correction value is calculated, and at the same time, magnification in the main scanning direction is corrected using the correcting value. Also, focusing (adjusting of the beam diameter) is carried out using the photosensors. Each of the photosensors contains a photoelectric transfer element, and a beam which comes through a slit is incident to the element. Each photosensor is provided with two slits. One is perpendicular to the main scanning direction, and the other is inclined to the main scanning direction. The beam diameter in the main scanning direction is adjusted based on detection of the beam which comes through the slit which is perpendicular to the main scanning direction. The beam diameter in the sub scanning direction is adjusted based on detection of the beam which comes through the slit inclined to the main scanning direction.

摘要翻译： 一种用于通过扫描从光学系统在感光构件上发射的激光束来形成图像的复印机。 感光体设置在与光敏部件上的扫描线的起始部分和端部的光学等效位置上。 通过这些光电传感器测量激光束在主扫描方向上的扫描时间。 将测量时间和由操作者设置的复印倍率的标准时间进行比较，并且计算校正值，并且同时使用校正值来校正主扫描方向上的倍率。 此外，使用光电传感器进行聚焦（光束直径的调节）。 每个光电传感器包含光电转移元件，并且通过狭缝进入的光束入射到元件。 每个光电传感器都有两个狭缝。 一个垂直于主扫描方向，另一个与主扫描方向倾斜。 基于垂直于主扫描方向的狭缝的光束的检测来调整主扫描方向的光束直径。 基于沿与主扫描方向倾斜的狭缝的光束的检测来调整副扫描方向上的光束直径。

公开(公告)号：US5450211A

公开(公告)日：1995-09-12

申请号：US265658

申请日：1994-06-24

申请人： Nobuo Kanai ,  Hitoshi Kageyama ,  Kenji Takeshita

发明人： Nobuo Kanai ,  Hitoshi Kageyama ,  Kenji Takeshita

IPC分类号： G02B26/12 ,  H04N1/053 ,  H04N1/113 ,  H04N1/12 ,  H04N1/40 ,  H04N1/036 ,  H04N1/04 ,  H04N1/393

CPC分类号： H04N1/4005 ,  G02B26/126 ,  H04N1/053 ,  H04N1/40037 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/0471 ,  H04N2201/04787

摘要： A copying machine for forming an image by scanning a laser beam which is emitted from an optical system on a photosensitive member. Photosensors are provided at optically equivalent positions to a beginning portion and an end portion of a scanning line on a photosensitive member. A scanning time of a laser beam in the main scanning direction is measured by these photosensors. The measured time and a standard time for a copy magnification set by an operator are compared, and a correction value is calculated, and at the same time, magnification in the main scanning direction is corrected using the correcting value. Also, focusing (adjusting of the beam diameter) is carried out using the photosensors. Each of the photosensors contains a photoelectric transfer element, and a beam which comes through a slit is incident to the element. Each photosensor is provided with two slits. One is perpendicular to the main scanning direction, and the other is inclined to the main scanning direction. The beam diameter in the main scanning direction is adjusted based on detection of the beam which comes through the slit which is perpendicular to the main scanning direction. The beam diameter in the sub scanning direction is adjusted based on detection of the beam which comes through the slit inclined to the main scanning direction.

摘要翻译： 一种用于通过扫描从光学系统在感光构件上发射的激光束来形成图像的复印机。 感光体设置在与光敏部件上的扫描线的起始部分和端部的光学等效位置上。 通过这些光电传感器测量激光束在主扫描方向上的扫描时间。 将测量时间和由操作者设置的复印倍率的标准时间进行比较，并且计算校正值，并且同时使用校正值来校正主扫描方向上的倍率。 此外，使用光电传感器进行聚焦（光束直径的调节）。 每个光电传感器包含光电转移元件，并且通过狭缝进入的光束入射到元件。 每个光电传感器都有两个狭缝。 一个垂直于主扫描方向，另一个与主扫描方向倾斜。 基于垂直于主扫描方向的狭缝的光束的检测来调整主扫描方向上的光束直径。 基于沿与主扫描方向倾斜的狭缝的光束的检测来调整副扫描方向上的光束直径。

公开(公告)号：US06323955B1

公开(公告)日：2001-11-27

申请号：US08972167

申请日：1997-11-17

申请人： Nobuo Kanai ,  Kenji Takeshita ,  Jun Kohsaka

发明人： Nobuo Kanai ,  Kenji Takeshita ,  Jun Kohsaka

IPC分类号： B41B1500

CPC分类号： H04N1/506 ,  B41J11/46 ,  G03G15/011 ,  G03G15/0194 ,  G03G2215/0119 ,  G03G2215/0161

摘要： The image forming apparatus provides a plurality of recording units to form images based on their respective image data, overlaying the images formed by the plurality of recording units on a single transfer member traveling in a predetermined direction, control means to sequentially cause registration patterns of predetermined shape to be formed by the plurality of recording units, and detecting means to detect each registration pattern on the transfer member in at least two locations in both the diretion of travel of the transfer member and a direction perpendicular thereto, and output non-integrated detection values.

摘要翻译： 图像形成装置提供多个记录单元，以基于它们各自的图像数据形成图像，将由多个记录单元形成的图像重叠在沿预定方向行进的单个传送构件上，控制装置依次导致预定的 形状由多个记录单元形成，以及检测装置，用于在传送构件的行进方向和与其垂直的方向上的至少两个位置检测转印构件上的每个配准图案，并输出非集成检测 价值观。

公开(公告)号：US6088146A

公开(公告)日：2000-07-11

申请号：US140447

申请日：1998-08-26

申请人： Kenji Takeshita ,  Nobuo Kanai ,  Hiroki Kinoshita ,  Satoshi Iwasaki

发明人： Kenji Takeshita ,  Nobuo Kanai ,  Hiroki Kinoshita ,  Satoshi Iwasaki

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

CPC分类号： G02B26/123

摘要： In a scanning optical system in which a plurality of light beams emitted from a plurality of light sources are, after being formed into beams converging in a predetermined manner, deflected by a single deflector and are then shone, through scanning lens systems provided one for each light beam, onto a scanned surface so that the scanned surface is scanned by the light beams for image formation, at least one of the scanning lens systems satisfies the condition 0

摘要翻译： 在其中从多个光源发射的多个光束被形成为以预定方式会聚的光束的一个扫描光学系统中，由单个偏转器偏转，然后被照射通过扫描透镜系统 光束到扫描的表面上，使得扫描的表面被光束扫描以用于图像形成，至少一个扫描透镜系统满足条件0 < - {（L-HH'）+ k} / k < = 0.2，其中L表示从光束到扫描表面的偏转点的距离，HH'表示从扫描透镜系统的前侧主点到后侧主点的距离，k（ k <0）表示由公式y'=kθ定义的比例常数，其中y'表示主扫描方向上扫描表面上的图像高度，θ表示偏转角，即， 光束后，de 由偏转器反射，相对于扫描透镜系统的光轴形成。

公开(公告)号：US5856669A

公开(公告)日：1999-01-05

申请号：US696066

申请日：1996-08-13

申请人： Yasushi Nagasaka ,  Kenji Takeshita ,  Hiroshi Hiraguchi ,  Jun Kohsaka ,  Nobuo Kanai ,  Keiji Ogoh

发明人： Yasushi Nagasaka ,  Kenji Takeshita ,  Hiroshi Hiraguchi ,  Jun Kohsaka ,  Nobuo Kanai ,  Keiji Ogoh

IPC分类号： B41J2/44 ,  B41J2/47 ,  G02B26/10 ,  G02B26/12 ,  G02B27/60

CPC分类号： B41J2/471 ,  G02B26/128 ,  G02B27/60

摘要： A laser beam scanning optical apparatus which has Moire fringes generating elements which is located near a position optically equivalent to a scanning surface and modulates a laser beam emitted from a laser source to generate Moire fringes. The Moire fringes generating elements comprises, for example, a first filter which has spatial grating and a second filter which has spatial grating which slants slightly with respect to the spatial grating of the first filter, the first filter and the second filter being arranged upstream and downstream respectively in an optical path. The laser beam scanning optical apparatus further has a light receiving element for receiving the Moire fringes generated by the Moire fringes generating elements. Focusing means for correcting a position of an image point of the laser beam is driven in accordance with an output of the light receiving element. For example, the light receiving element is a photoelectric element with a plurality of light receiving surfaces, each of which generates an electric signal in accordance with the laser beam incident thereto, and from a phase difference between the electric signals, the position of the image point is detected.

摘要翻译： 一种激光束扫描光学装置，其具有位于光学上等同于扫描表面的位置附近的莫尔条纹产生元件，并且调制从激光源发射的激光束以产生莫尔条纹。 莫尔条纹生成元件包括例如具有空间光栅的第一滤光器和具有相对于第一滤光器的空间光栅稍微倾斜的空间光栅的第二滤光器，第一滤光器和第二滤光器布置在上游， 分别在光路中。 激光束扫描光学装置还具有用于接收由莫尔条纹生成元件产生的莫尔条纹的光接收元件。 根据光接收元件的输出来驱动用于校正激光束的图像点的位置的聚焦装置。 例如，光接收元件是具有多个光接收表面的光电元件，每个光接收表面根据入射到其的激光束产生电信号，并且根据电信号之间的相位差，图像的位置 点检测。

公开(公告)号：US6157478A

公开(公告)日：2000-12-05

申请号：US773644

申请日：1996-12-24

申请人： Toshio Naiki ,  Nobuo Kanai ,  Jun Kohsaka ,  Kenji Takeshita

发明人： Toshio Naiki ,  Nobuo Kanai ,  Jun Kohsaka ,  Kenji Takeshita

IPC分类号： B41J2/44 ,  G02B19/00 ,  G02B26/10 ,  G02B26/12 ,  G02B26/08

CPC分类号： G02B26/123 ,  B41J2/473

摘要： In a multibeam scanning optical apparatus of a type where two parallel lines are simultaneously scanned by two laser beams irradiated from two semiconductor lasers, stable images are formed on the scanned surface by the two laser beams and the cost is reduced. The two laser beams irradiated from the two semiconductor lasers are directed substantially in the same direction through a beam splitter and then shaped by a condenser lens into two luminous fluxes whose optical axes are substantially parallel to each other. In another arrangement, the semiconductor lasers are directly secured to a surface of the beam splitter by use of an ultraviolet setting resin.

摘要翻译： 在通过从两个半导体激光器照射的两个激光束同时扫描两条平行线的多光束扫描光学装置中，通过两个激光束在扫描表面上形成稳定的图像，并降低成本。 从两个半导体激光器照射的两个激光束通过分束器基本上指向相同的方向，然后通过聚光透镜成形为两个光束，其光轴基本上彼此平行。 在另一种布置中，半导体激光器通过使用紫外线固化树脂直接固定到分束器的表面。

公开(公告)号：US6097421A

公开(公告)日：2000-08-01

申请号：US740870

申请日：1996-11-04

申请人： Kenji Takeshita ,  Nobuo Kanai

发明人： Kenji Takeshita ,  Nobuo Kanai

IPC分类号： G02B13/00 ,  G02B13/08 ,  G02B13/18 ,  G02B26/12

CPC分类号： G02B26/125

摘要： In a scanning optical system in which image-surface curvature in the traverse direction is corrected properly without degrading imaging performance in the scanning direction and in which the transverse magnification is approximately uniform irrespective of the deflection angle, the influence of form errors in the imaging lens upon the image is substantially suppressed so as not to degrade the quality of the image. The scanning optical system is provided with a aspherical lens having a refractive power only in the traverse direction and having a TSL shape whose curvature radius increases as the distance in the scanning direction from the center of the lens (the position in which the curvature radius in the traverse direction is smallest) increases. The aspherical lens is disposed in such a way that the line of symmetry that passes through its center is parallel to and at a distance from the optical axis of a first lens unit on the upstream side of a scanning path in the scanning direction. The traverse magnification of the scanning optical system is set at a value in a predetermined range.

摘要翻译： 在扫描光学系统中，其横向方向上的图像表面曲率被正确地校正，而不会降低扫描方向上的成像性能，并且横向倍率与偏转角无关地大致均匀，所以成像透镜中的形状误差的影响 基本上抑制了图像，从而不会降低图像的质量。 扫描光学系统具有仅在横动方向上具有屈光力的非球面透镜，并且具有曲率半径随着从透镜中心的扫描方向的距离而增加的TSL形状（曲率半径的位置 横动方向最小）增加。 非球面透镜被设置成使得通过其中心的对称线在扫描方向上的扫描路径的上游侧与第一透镜单元的光轴平行且距离一定距离。 扫描光学系统的横越倍率被设定在预定范围内的值。

公开(公告)号：US5969346A

公开(公告)日：1999-10-19

申请号：US887460

申请日：1997-07-02

申请人： Yasushi Nagasaka ,  Kenji Takeshita ,  Hiroshi Hiraguchi ,  Jun Kohsaka ,  Nobuo Kanai ,  Keiji Ogoh

发明人： Yasushi Nagasaka ,  Kenji Takeshita ,  Hiroshi Hiraguchi ,  Jun Kohsaka ,  Nobuo Kanai ,  Keiji Ogoh

IPC分类号： G02B26/12 ,  H01J3/14 ,  G01J1/20 ,  G02B26/08

CPC分类号： G02B26/128

摘要： A laser beam scanning optical apparatus which images and scans a laser beam emitted from a laser diode on a photo-sensitive drum through a focusing lens, a polygon mirror and an f.theta. lens. An SOS photosensor detects the scanned laser beam and generates a detection signal. The laser diode is controlled to perform pulse emission a specified time after the generation of the detection signal. The pulse beam is incident to a beam detector which adopts a knife edge method, and the amount of a focal shift is detected. The focusing lens is moved along the optical axis in accordance with the detected amount of a focal shift to correct the position of the image point.

摘要翻译： 一种激光束扫描光学装置，其通过聚焦透镜，多面镜和fθ透镜对从感光鼓上的激光二极管发射的激光束进行成像和扫描。 SOS光电传感器检测扫描的激光束并产生检测信号。 控制激光二极管在产生检测信号之后的指定时间内执行脉冲发射。 脉冲光束入射到采用刀刃法的光束检测器，并检测焦点偏移量。 根据检测到的焦点偏移量，聚焦透镜沿着光轴移动以校正图像点的位置。

公开(公告)号：US5808775A

公开(公告)日：1998-09-15

申请号：US814217

申请日：1997-03-11

申请人： Yoshihiro Inagaki ,  Nobuo Kanai ,  Jun Kohsaka ,  Kenji Takeshita ,  Keiji Ogoh ,  Hidenari Tachibe

发明人： Yoshihiro Inagaki ,  Nobuo Kanai ,  Jun Kohsaka ,  Kenji Takeshita ,  Keiji Ogoh ,  Hidenari Tachibe

IPC分类号： B41J2/44 ,  G02B13/00 ,  G02B13/18 ,  G02B26/10 ,  G02B26/12 ,  G02B26/08

CPC分类号： G02B26/124

摘要： A laser beam scanning optical apparatus which has a laser source unit, a collimator lens, a cylindrical lens, a polygon mirror and a scanning lens with an f.theta. function. The collimator lens is a bifocal lens, and because of the bifocal collimator lens, a part of the laser beam is focused on a point before the surface of a photosensitive member, and another part of the laser beam is focused on a point after the surface of the photosensitive member. Also, the cylindrical lens can be a bifocal lens. In this case, even when the magnification ratio in the sub scanning direction is designed small, the focal length of the cylindrical lens does not have to be lengthened.

摘要翻译： 一种具有激光源单元，准直透镜，柱面透镜，多面镜和具有fθ函数的扫描透镜的激光束扫描光学装置。 准直透镜是双焦点透镜，并且由于双焦点准直透镜，激光束的一部分聚焦在感光构件表面之前的点，并且激光束的另一部分聚焦在表面之后的点 的光敏元件。 此外，柱面透镜可以是双焦点透镜。 在这种情况下，即使将副扫描方向的倍率设计得较小，也不必延长柱面透镜的焦距。