公开(公告)号：US08305658B2

公开(公告)日：2012-11-06

申请号：US12507528

申请日：2009-07-22

申请人： Sung-Po Cheng

发明人： Sung-Po Cheng

IPC分类号： H04N1/04

CPC分类号： B65H7/02 ,  B65H2404/54 ,  B65H2404/6111 ,  B65H2513/10 ,  B65H2801/06 ,  H04N1/0473 ,  H04N1/121 ,  H04N1/193 ,  H04N2201/02439 ,  H04N2201/0471 ,  H04N2201/04724 ,  H04N2201/04734 ,  H04N2201/04756 ,  H04N2201/04781 ,  H04N2201/04794 ,  B65H2220/01 ,  B65H2220/11 ,  B65H2220/03

摘要： The invention provides an automatic document feeder for a scanning apparatus. The automatic document feeder includes a feeding passage, a feeding mechanism, a shaft, an idle roller, and a detecting device. The feeding mechanism is used for transporting a document along the feeding passage. The shaft is disposed at the feeding passage, and the idle roller is sleeved on the shaft. When the document is transported through the feeding passage, the idle roller is driven to rotate by the document. The detecting device detects a rotational speed of the idle roller and outputs a detection signal according to the rotational speed of the idle roller.

摘要翻译： 本发明提供了一种用于扫描装置的自动送纸器。 自动进纸器包括进给通道，进给机构，轴，空转辊和检测装置。 进给机构用于沿着进给通道传送文件。 轴设置在进给通道处，空转辊套在轴上。 当文件通过进给通道传送时，空转辊由文件驱动旋转。 检测装置检测空转辊的转速，并根据空转辊的转速输出检测信号。

公开(公告)号：US20120224235A1

公开(公告)日：2012-09-06

申请号：US13395012

申请日：2011-01-26

申请人： Yoshihiro Hanada

发明人： Yoshihiro Hanada

IPC分类号： H04N1/04

CPC分类号： G02B26/101 ,  G02B26/0841 ,  G02B26/105 ,  H04N1/113 ,  H04N2201/04768 ,  H04N2201/04781

摘要： A two-dimensional light scanning apparatus includes: a deflector to drive at a resonance frequency in a main scanning direction and a sub-scanning direction different from the main scanning direction; a position sensor to detect a scanning position of the deflector; a resonance frequency predicting part to predict the resonance frequency of the deflector; and a deflector drive control part to: for drawing a Lissajous figure in which scanning trajectories of the deflector do not overlap with each other for one frame, store a plurality of pairs of respective frequency ratios of driving signals in the sub-scanning direction to driving signals in the main scanning direction, and respective phases of the driving signals in the sub-scanning direction with respect to the driving signals in the main scanning direction; select one pair of a frequency ratio and a phase; and control the deflector with a driving signal.

摘要翻译： 二维光扫描装置包括：偏转器，其以与主扫描方向不同的主扫描方向和副扫描方向以共振频率驱动; 位置传感器，用于检测偏转器的扫描位置; 谐振频率预测部分，用于预测偏转器的谐振频率; 以及偏转器驱动控制部分，用于：为了绘制一个李斯aj图，其中偏转器的扫描轨迹彼此不重叠一帧，将副扫描方向上的驱动信号的多对频率对存储到驱动 在主扫描方向上的信号以及副扫描方向上的驱动信号的相位相对于主扫描方向上的驱动信号。 选择一对频率比和相位; 并用驱动信号控制偏转器。

公开(公告)号：US20110063401A1

公开(公告)日：2011-03-17

申请号：US12880563

申请日：2010-09-13

申请人： Toshio OHIDE

发明人： Toshio OHIDE

IPC分类号： B41J2/435

CPC分类号： G06K15/1257 ,  H04N1/053 ,  H04N1/06 ,  H04N2201/04781 ,  H04N2201/04786 ,  H04N2201/04789

摘要： An optical writing device includes two or more light sources. The two or more light sources can be driven independently, are placed away from each other in a sub-scanning direction of a photoreceptor, and each distance of beams emitted from the light sources to the photoreceptor is different. A phase control unit causes a difference in phase among timing control data of two or more beams emitted from the two or more light sources by a phase change amount, which is determined on the basis of beam position of the each beam on the photoreceptor in a main scanning direction and varies depending on the beam position. The modulating unit modulates the timing control data of the respective phase-controlled beams by a same clock.

摘要翻译： 光写入装置包括两个或多个光源。 可以独立地驱动两个以上的光源，在感光体的副扫描方向上彼此远离放置，从光源发射到感光体的光束的距离不同。 相位控制单元使得从两个或更多个光源发射的两个或更多个光束的定时控制数据之间的相位差相位变化量，该相位变化量基于感光体上的每个光束的光束位置确定 主扫描方向根据光束位置而变化。 调制单元以相同的时钟调制各个相控束的定时控制数据。

公开(公告)号：US20090161181A1

公开(公告)日：2009-06-25

申请号：US12004474

申请日：2007-12-19

申请人： Jianhua Xu

发明人： Jianhua Xu

IPC分类号： H04N1/46

CPC分类号： H04N1/113 ,  H04N2201/0468 ,  H04N2201/0471 ,  H04N2201/04781

摘要： A method for detecting scanner phase error in a bidirectional scanned beam imager includes obtaining first and second images derived from respective first and second scan directions, comparing apparent image feature positions in the first and second images, and calculating a phase error corresponding to a difference between the apparent image feature positions. The comparison may include multiplying frequency domain transformations of the images.

摘要翻译： 一种用于检测双向扫描光束成像仪中的扫描仪相位误差的方法，包括获得从相应的第一和第二扫描方向导出的第一和第二图像，比较第一和第二图像中的视在图像特征位置，以及计算相应于 表观图像特征位置。 比较可以包括对图像的频域变换进行乘法。

公开(公告)号：US07489328B2

公开(公告)日：2009-02-10

申请号：US11443063

申请日：2006-05-31

申请人： Hidenori Akamatsu

发明人： Hidenori Akamatsu

IPC分类号： B41J2/435 ,  B41J2/47

CPC分类号： G02B26/127 ,  G02B26/123 ,  H04N1/053 ,  H04N1/1135 ,  H04N1/12 ,  H04N1/506 ,  H04N2201/02439 ,  H04N2201/0471 ,  H04N2201/04729 ,  H04N2201/04732 ,  H04N2201/04744 ,  H04N2201/04748 ,  H04N2201/04768 ,  H04N2201/04772 ,  H04N2201/04781 ,  H04N2201/04789 ,  H04N2201/04794

摘要： A magnification correction controller corrects magnification in a main scanning direction by changing a timing of an image signal based on a time difference between a first detection time in a predetermined position along a main scanning line of the image carrier to which the laser beam is irradiated and a second detection time in a position different from the predetermined position along the main scanning line. The magnification correction controller corrects the magnification in the main scanning direction by changing a timing of the image signal corresponding to a color different from a predetermined color, based on the time difference measured for the predetermined color.

摘要翻译： 放大校正控制器通过基于沿着照射激光束的图像载体的主扫描线的预定位置的第一检测时间之间的时间差来改变图像信号的定时来校正主扫描方向的倍率， 在与主扫描线的预定位置不同的位置处的第二检测时间。 放大校正控制器基于对于预定颜色测量的时间差，通过改变对应于与预定颜色不同的颜色的图像信号的定时来校正主扫描方向上的倍率。

公开(公告)号：US20080158634A1

公开(公告)日：2008-07-03

申请号：US11959954

申请日：2007-12-19

申请人： Yasuaki Otoguro

发明人： Yasuaki Otoguro

IPC分类号： G02F1/03 ,  G03G15/043

CPC分类号： G03G15/326 ,  B41J2/471 ,  G02B26/101 ,  G02B26/127 ,  G02F1/29 ,  G03G15/0435 ,  G03G2215/0404 ,  H04N1/053 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/0082 ,  H04N2201/04713 ,  H04N2201/04734 ,  H04N2201/04744 ,  H04N2201/04781

摘要： An optical scanning apparatus includes a laser diode, electro-optical crystal member, BD sensor, two light detection sensors and voltage control unit. The electro-optical crystal member is arranged in the optical path between the laser diode and a polygon mirror, and deflects the light beam in the sub-scanning direction by applied voltage. The BD sensor and two light detection sensors detect the light beam deflected in the sub-scanning direction. A scanning control unit controls, based on the detection results obtained by the BD sensor and two light detection sensors, the irradiation position of the light beam on a photosensitive drum. The BD sensor and two light detection sensors are arranged at positions distant in the sub-scanning direction from an optical path to the photosensitive drum and at the central portion and two end portions of an image forming region in the main scanning direction.

摘要翻译： 光学扫描装置包括激光二极管，电光晶体元件，BD传感器，两个光检测传感器和电压控制单元。 电光晶体部件设置在激光二极管和多面镜之间的光路中，并且通过施加的电压使光束在副扫描方向上偏转。 BD传感器和两个光检测传感器检测沿副扫描方向偏转的光束。 扫描控制单元基于由BD传感器和两个光检测传感器获得的检测结果控制光束在感光鼓上的照射位置。 BD传感器和两个光检测传感器被布置在从光路到光敏鼓的副扫描方向上的位置以及主扫描方向上的图像形成区域的中心部分和两个端部处。

公开(公告)号：US20080055697A1

公开(公告)日：2008-03-06

申请号：US11892490

申请日：2007-08-23

申请人： Ryoji Okazaki

发明人： Ryoji Okazaki

IPC分类号： G02B26/00 ,  H03L7/00

CPC分类号： H04N1/047 ,  H04N2201/02439 ,  H04N2201/0471 ,  H04N2201/04744 ,  H04N2201/04781 ,  H04N2201/04784 ,  H04N2201/04794

摘要： A timing detection circuit including a first timing detection circuit, a second detection circuit, and an output circuit is disclosed. The first detection circuit detects, among multiphase clocks having n mutually different phases and a frequency of k times the frequency of a reference clock, a closest clock having a clock edge closest to a valid edge of the synchronizing signal and generates first detect signal DET_A indicating the detected clock. The second timing detection circuit detects within which of k successive cycles of the representative clock selected from the multiphase clocks the valid edge of the synchronizing signal is positioned and generates second detect signal DET_B indicating the detected cycle. The output circuit receives the first detect signal and the second detect signal and outputs first output signal OUT_A and second output signal OUT_B.

摘要翻译： 公开了一种包括第一定时检测电路，第二检测电路和输出电路的定时检测电路。 第一检测电路在具有n个相互不同的相位的多相时钟和基准时钟的频率的k倍的多相时钟中检测最近的时钟，其具有最接近同步信号的有效边沿的时钟边缘，并且生成第一检测信号DET_A， 检测到的时钟。 第二定时检测电路检测从多相时钟选择的代表时钟的k个连续周期中的同步信号的有效边位于哪个中，并产生指示检测到的周期的第二检测信号DET_B。 输出电路接收第一检测信号和第二检测信号，并输出第一输出信号OUT_A和第二输出信号OUT_B。

公开(公告)号：US07187400B2

公开(公告)日：2007-03-06

申请号：US11000835

申请日：2004-12-01

申请人： Craig Palmer Bush

发明人： Craig Palmer Bush

IPC分类号： B41J2/47 ,  G03G15/043

CPC分类号： G03G15/043 ,  H04N1/053 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/02439 ,  H04N2201/0471 ,  H04N2201/04734 ,  H04N2201/04744 ,  H04N2201/04781 ,  H04N2201/04793 ,  H04N2201/04794

摘要： A bi-directional electrophotographic raster imaging system that sweeps a modulated light beam across an imaging region of a photosensitive surface to create both forward-going and reverse-going scanlines of dot data on the imaging region, and which compensates for image misalignment that may be caused by varying the power used to drive a laser light source that generates the modulated light beam. An SOS photosensor detects the beginning of each scanline in both forward and reverse directions, outputting an SOS signal used to create both forward and reverse margins. When the laser power is varied, compensating data is used to correct the forward and reverse margins to keep them aligned (straight), even though the beginning of the scanline locations for both forward and reverse scans are affected in opposite directions by an increase or decrease in laser power.

摘要翻译： 一种双向电子照相光栅成像系统，其将调制的光束扫过感光表面的成像区域，以在成像区域上产生点数据的前进扫描线和反向扫描线，并补偿图像未对准 这是由于改变用于驱动产生调制光束的激光光源的功率而引起的。 SOS光电传感器在正向和反向方向上检测每条扫描线的开始，输出用于创建正向和反向边距的SOS信号。 当激光功率变化时，补偿数据用于校正正向和反向余量以保持它们对齐（直线），即使正向和反向扫描的扫描线位置的开始在相反方向上受到增加或减少的影响 在激光功率。

公开(公告)号：US07050080B2

公开(公告)日：2006-05-23

申请号：US09873256

申请日：2001-06-05

申请人： Hidetoshi Ema ,  Akihisa Itabashi

发明人： Hidetoshi Ema ,  Akihisa Itabashi

IPC分类号： B41J2/435

CPC分类号： H04N1/053 ,  G06K15/1219 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/02439 ,  H04N2201/0471 ,  H04N2201/04732 ,  H04N2201/04744 ,  H04N2201/04772 ,  H04N2201/04781 ,  H04N2201/04794

摘要： In an image forming apparatus which uses a semiconductor laser as a light source, a semiconductor laser is controlled by adjustment of an image write-in clock, and a highly accurate scanning position alignment is performed with a simple structure. An optical unit scans a rotational photo conductor by a laser light output by a semiconductor laser. A photodetector detects the laser light output by the semiconductor laser at a predetermined position. An electrostatic latent image is formed by scanning the rotational photo conductor based on the laser light detected by the photodetector. By dividing a clock output from a high-frequency clock generation circuit, an image clock which synchronized with the output of the photodetector is generated, and the phase of the image clock is changed.

公开(公告)号：US20050093962A1

公开(公告)日：2005-05-05

申请号：US10981677

申请日：2004-11-05

申请人： Naoki Miyatake ,  Mitsuo Suzuki ,  Seizo Suzuki

发明人： Naoki Miyatake ,  Mitsuo Suzuki ,  Seizo Suzuki

IPC分类号： B41J2/44 ,  G02B26/10 ,  G02B26/12 ,  G03G15/04 ,  H04N1/04 ,  H04N1/053 ,  H04N1/113 ,  G02B26/08

CPC分类号： H04N1/053 ,  G02B26/123 ,  G02B26/127 ,  H04N1/1135 ,  H04N2201/02439 ,  H04N2201/0471 ,  H04N2201/04729 ,  H04N2201/04732 ,  H04N2201/04744 ,  H04N2201/04781 ,  H04N2201/04789 ,  H04N2201/04794

摘要： An optical scanning unit includes an optical deflector, a plurality of scanning optical systems, and a pixel-clock generating unit. A photodetector is arranged in at least two locations on a writing-start side and a writing-end side outside the writing area. The optical scanning unit measures a scanning time, and corrects respective dot positions of image data in the writing area to arbitrary positions based on an amount of fluctuation of the scanning time measured.

摘要翻译： 光学扫描单元包括光偏转器，多个扫描光学系统和像素时钟产生单元。 在写入区域的写入开始侧和写入端侧的至少两个位置配置有光检测器。 光扫描单元测量扫描时间，并且基于所测量的扫描时间的波动量，将写入区域中的图像数据的各个点位置校正为任意位置。