公开(公告)号：EP0998112A1

公开(公告)日：2000-05-03

申请号：EP99308531.5

申请日：1999-10-28

申请人： SAMSUNG ELECTRONICS CO., LTD.

发明人： An, Seung-deog

IPC分类号： H04N1/00 ,  G02B26/12

CPC分类号： H04N1/053 ,  G02B26/127 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/02439 ,  H04N2201/0471 ,  H04N2201/04732 ,  H04N2201/04741 ,  H04N2201/04744 ,  H04N2201/04786 ,  H04N2201/04794

摘要： An optical scanning system for a printer, having an optical scanning unit (30) for scanning light onto a circulating photoreceptor web (14); a photodetector (18) for receiving scanning light emitted from the optical scanning unit. A defective edge area detector (42) is provided for comparing pulse signals output in sequence from the photodetector (18) to determine whether the edge of the photoreceptor web has a defect, and outputting an edge defect signal if a defective area is detected at the edge of the photoreceptor web. An estimated pulse width calculator (42) is used to provide a predetermined estimated pulse width, and updates the estimated pulse width for the next line image scanning using the signal from the defective edge area detector, the predetermined estimated pulse width, and the pulse signal from the photodetector. A line scanning synchronous signal generator (43) generates a line scanning synchronous signal in synchronicity with the predetermined estimated pulse width; and an optical scanning unit driver is provided to drive the optical scanning unit such that the optical scanning unit emits the light onto image information synchronized with the line scanning synchronous signal. By the optical scanning system and a method for adjusting the start point of image scanning, errors in writing an image can be suppressed, which is caused by a defect at the edge of the photoreceptor web.

摘要翻译： 用于打印机的光学扫描系统中，具有在光学扫描单元（30），用于扫描光到循环感光带（14）; 用于接收从所述光学扫描单元发射的扫描光的光检测器（18）。 一个有缺陷的边缘区域检测器（42）被设置用于从所述光电检测器（18），以确定的矿无论光接受器幅材的边缘具有一个缺陷，并输出，如果在检测到缺陷区起始边缘缺陷信号在序列脉冲信号输出进行比较 光接受器网络的边缘。 的预算脉冲宽度计算器（42）用于提供预定的预算脉冲宽度，并更新使用从缺损边缘区域探测器，预定的预算脉冲宽度的信号的下一行图像扫描的预算脉冲宽度，和脉冲信号 从光电检测器。 行扫描同步信号发生器（43）基因率的线扫描与预定的预算脉冲宽度同步的同步信号; 和光学扫描提供单元驱动器，以驱动检测做的光学扫描单元发射到具有行扫描同步信号同步的图像信息的光的光扫描单元。 由光学扫描系统和调整图像扫描的起始点的方法，在写入图像错误可以被抑制，所有这一切是通过在光接受器幅材的边缘的缺陷引起的。

公开(公告)号：EP0930773A2

公开(公告)日：1999-07-21

申请号：EP99100575.2

申请日：1999-01-13

申请人： KABUSHIKI KAISHA TOSHIBA

发明人： Tanimoto, Koji ,  Komiya, Kenichi ,  Ide, Naoaki ,  Sakakibara, Jun

IPC分类号： H04N1/047

CPC分类号： H04N1/4005 ,  B41J2/473 ,  H04N1/0402 ,  H04N1/0411 ,  H04N1/0414 ,  H04N1/0443 ,  H04N1/0455 ,  H04N1/047 ,  H04N1/1135 ,  H04N1/12 ,  H04N1/1911 ,  H04N2201/02439 ,  H04N2201/0471 ,  H04N2201/04712 ,  H04N2201/04729 ,  H04N2201/04731 ,  H04N2201/04732 ,  H04N2201/04734 ,  H04N2201/04744 ,  H04N2201/04762 ,  H04N2201/04786 ,  H04N2201/04789 ,  H04N2201/04791 ,  H04N2201/04794

摘要： Four beams are caused to scan a scanning surface in the main scanning direction in parallel. The beams expose the target area between two optical sensors, not the surface of a photosensitive drum, to produce correction data to correct shifts in the exposure positions of the four beams in the main scanning direction with an accuracy of less than a small fraction of one pixel. On the basis of the correction data, an actual image formation area is set on the photosensitive drum. This makes it possible to always control the relative exposure scanning position accurately even when the relationship between the main scanning positions of the light beams is unknown.

摘要翻译： 使四个光束平行地在主扫描方向上扫描扫描表面。 光束在两个光学传感器之间而不是在感光鼓的表面之间曝光目标区域，以产生校正数据，以校正四个光束在主扫描方向上的曝光位置的偏移，其精度小于一个 像素。 基于校正数据，在感光鼓上设置实际的图像形成区域。 这使得即使当光束的主扫描位置之间的关系未知时也可以始终精确地控制相对曝光扫描位置。

公开(公告)号：EP0828177A3

公开(公告)日：1998-12-02

申请号：EP97115460.4

申请日：1997-09-05

申请人： FUJI PHOTO FILM CO., LTD.

发明人： Yamashita, Akiko ,  Sumi, Katsuto

IPC分类号： G02F1/33 ,  H04N1/06 ,  G02B26/10

CPC分类号： H04N1/0635 ,  G02F1/33 ,  H04N1/053 ,  H04N1/0607 ,  H04N1/1911 ,  H04N2201/02439 ,  H04N2201/0471 ,  H04N2201/04724 ,  H04N2201/04734 ,  H04N2201/04765 ,  H04N2201/04786 ,  H04N2201/04793 ,  H04N2201/04794

摘要： An xyz coordinate system is determined so that a z-axis may coincide with an incident direction of an incident light, an x-axis may coincide with a polarizing direction of the incident light and a y-axis may be defined as the right-handed system from the z-axis and x-axis. An acousto-optic element is rotated around the z-axis, around the axis in a direction of propagation of an ultrasonic wave and around an axis B perpendicular to a plane formed by the z-axis and the direction of propagation of the ultrasonic wave, so that the attitude of the acousto-optic element to the incident light is adjusted.

公开(公告)号：EP0525386B1

公开(公告)日：1998-05-06

申请号：EP92110658.9

申请日：1992-06-24

申请人： EASTMAN KODAK COMPANY

发明人： Kresock, John Michael, c/o EASTMAN KODAK COMPANY ,  Orlicki, David Mark, c/o EASTMAN KODAK COMPANY ,  Chandler, Jasper Schell, c/o EASTMAN KODAK COMP. ,  Neale, Timothy Edward, c/o EASTMAN KODAK COMP.

IPC分类号： B41J2/435 ,  G02B26/08

CPC分类号： G05B19/40 ,  G06K15/1219 ,  H04N1/053 ,  H04N1/1135 ,  H04N2201/0471 ,  H04N2201/04734 ,  H04N2201/04739 ,  H04N2201/04755 ,  H04N2201/04774 ,  H04N2201/04786 ,  H04N2201/04793

摘要： An improved method of, and electrical circuit for driving with precision and accuracy an electro-mechanical device such as a galvanometer is disclosed. The method precisely controls high speed linear scanning of the device in a forward scan segment of each cycle of operation, and further provides very fast re-set of the device without position overshoot during a re-trace segment of a cycle. The electrical circuit includes memory means for generating an electrical command waveform for controlling the device during each cycle of operation, and drive servo means for applying electrical power to the device. The servoing action of this circuit substantially eliminates any difference between an actual position of the device and the position directed by the command waveform during each forward scan segment of a cycle of operation, with the result that each forward scan segment is highly accurate and repeatable. During each re-trace segment of a cycle the circuit re-sets the device at high speed in a way that limits accuracy destroying effects of device overshoot and oscillation.

公开(公告)号：EP0827325A2

公开(公告)日：1998-03-04

申请号：EP97111845.0

申请日：1997-07-11

申请人： Bayer Corporation

发明人： Allen, Roy D. ,  Scholten, Frank

IPC分类号： H04N1/047

CPC分类号： H04N1/0635 ,  B41B19/00 ,  B41J2/473 ,  G02B26/10 ,  H04N1/047 ,  H04N1/053 ,  H04N1/0607 ,  H04N1/1911 ,  H04N2201/02439 ,  H04N2201/0471 ,  H04N2201/04732 ,  H04N2201/04734 ,  H04N2201/04744 ,  H04N2201/0476 ,  H04N2201/04765 ,  H04N2201/04786 ,  H04N2201/04794

摘要： A multi-beam scanning system for scanning a curved imaging surface 255 includes at least one radiation emitter 210 configured to emit a first beam of radiation and a second beam of radiation. A spin deflector 235, rotatable about a spin axis, directs the first beam to form a first scan line and the second beam to form a second scan line on the imaging surface. At least one acousto-optic element 220, disposed in the path of at least one of the beams and upstream of the spin deflector, is operable to deflect the at least one beam with respect to the spin axis of the spin deflector.

摘要翻译： 用于扫描弯曲成像表面255的多光束扫描系统包括被配置为发射第一辐射束和第二辐射束的至少一个辐射发射器210。 旋转偏转器235可绕旋转轴线旋转，引导第一光束形成第一扫描线，而第二光束在成像表面上形成第二扫描线。 至少一个声光元件220设置在至少一个光束和旋转偏转器的上游的路径中，可操作以使至少一个光束相对于旋转偏转器的旋转轴线偏转。

公开(公告)号：EP0535783B1

公开(公告)日：1997-05-28

申请号：EP92306572.6

申请日：1992-07-17

申请人： XEROX CORPORATION

发明人： Hunter, Timothy M. ,  Pham, Hung M. ,  Zanghi, John L.

IPC分类号： H04N1/04

CPC分类号： H04N1/053 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/02439 ,  H04N2201/0471 ,  H04N2201/04732 ,  H04N2201/04744 ,  H04N2201/04786 ,  H04N2201/04794

摘要： An apparatus and method of reducing pixel clock jitter in a raster scanner having a oscillator (49) which generates a pixel clock signal (PC) and a start of scan sensor (38) for generating a start of scan signal, includes the generation of an inverted pixel clock signal (PCINV) and an inverted start of scan signal. Based on which of the pixel clock signal (PC) or the inverted pixel clock signal (PCINV) has a rising edge closer to the start of scan signal, one of the pixel clock or inverted pixel clock signal is selected to replace the original pixel clock signal. Further selections are prevented from occurring until a subsequent start of scan signal is detected.

公开(公告)号：EP0705515B1

公开(公告)日：1996-12-27

申请号：EP94920368.1

申请日：1994-06-27

申请人： FIRMA F+O ELECTRONIC SYSTEMS GmbH

发明人： AUER, Michael ,  GROSSMANN, Hans-Peter ,  IHLEFELD, Joachim ,  PESTER, Michael ,  UHLIG, Günther ,  WENERT, Lutz

IPC分类号： H04N1/04

CPC分类号： H04N1/0473 ,  H04N1/12 ,  H04N1/193 ,  H04N2201/02439 ,  H04N2201/0471 ,  H04N2201/04724 ,  H04N2201/04734 ,  H04N2201/04786 ,  H04N2201/04794

摘要： A process and device are disclosed for synchronising the picking-up of monochrome and colour pictures by means of photosensitive line sensors. A line scanning pattern is generated by a counting device and at the moment when an impulse of the incremental generator is received the timer measures by means of a computer and of the programmable counting arrangement the phase position of the line scanning pattern generated by the counting arrangement, compares said line scanning pattern with an associated calculated or tabled set value and uses the thus obtained phase difference in order to influence the count of a counter connected upstream of the line counter (CT2) (Figures 1 and 2). The time decomposes the measurement lines of the picture pick-up device into two or more scanning lines when the integration time of the photosensitive lines within the measurement line results in an exposure higher than the operating limit of the sensors.

摘要翻译： 公开了一种用于通过光敏线传感器来同步拾取单色和彩色图片的过程和装置。 线扫描图案由计数装置产生，并且在增量发生器的脉冲被接收时，定时器通过计算机和可编程计数装置测量由计数装置产生的线扫描图案的相位位置 将所述行扫描图案与相关联的计算或表格设定值进行比较，并使用如此获得的相位差以影响在行计数器（CT2）（图1和2）的上游连接的计数器的计数。 当测量线中的感光线的积分时间导致高于传感器的操作极限的曝光时，时间将摄像装置的测量线分解成两个或更多个扫描线。

公开(公告)号：EP0596641B1

公开(公告)日：1996-12-18

申请号：EP93308529.2

申请日：1993-10-26

申请人： XEROX CORPORATION

发明人： Strauch, Andrew M. ,  Ossman, Kenneth R. ,  Constanza, Daniel W. ,  Hubble III,Fred F.

IPC分类号： G03G15/01 ,  H04N1/46

CPC分类号： G03G15/0152 ,  G03G15/011 ,  G03G15/0163 ,  H04N1/0473 ,  H04N1/1135 ,  H04N1/12 ,  H04N1/506 ,  H04N2201/0471 ,  H04N2201/04722 ,  H04N2201/04732 ,  H04N2201/04744 ,  H04N2201/04786

摘要： The present invention is directed to a precise method of registering plurality of imaging stations (10,12,14,16), so as to form sequential images on a photoreceptor belt (18) in a single pass. A belt hole (23,24) is formed in the photoreceptor belt (18), outside the image area (I1-I4), but within the scan of the imager scan line. The scan line is sequentially swept in a transverse direction across the width of the belt (18). As the leading edge of the belt hole (23,24) advances into the sweeping beam, a plurality of beam sweeps will occur while the leading edge is moving through the sweep area. Due to the gaussian illumination of the scanning beam, the exposure at the belt edge gradually increases to a maximum point coinciding with the maximum illumination of the scanning beam. A detector (21,22) is placed beneath the belt (18) to provide a signal representing the exposure level of each scanning beam which crosses the leading edge of the advancing belt hole (23,24). The detectors (21,22) produce a current output representative of the exposure level. The current output is converted into voltage outputs which are then used in an extrapolation process to determine a midpoint for the illumination profile crossing the scan line and, from this, a reference time at which the midpoint of the beam illumination was reached. This reference time is then used to generate a precisely timed line sync signal which is reproducible through each of the imaging stations to produce registration of the first scan line of each image sequence with a very high degree of accuracy.

公开(公告)号：EP0360169B1

公开(公告)日：1996-04-10

申请号：EP89117117.5

申请日：1989-09-15

申请人： CANON KABUSHIKI KAISHA

发明人： Wataya, Masafumi ,  Yanaka, Toshiyuki ,  Kadowaki, Hidejiro ,  Tsuchii, Ken ,  Takahashi, Haruhiko ,  Takamiya, Makoto ,  Yamamoto, Kosuke

IPC分类号： H04N1/04 ,  H04N1/46

CPC分类号： H04N1/506 ,  H04N1/0473 ,  H04N1/12 ,  H04N1/193 ,  H04N2201/02439 ,  H04N2201/0471 ,  H04N2201/04724 ,  H04N2201/04734 ,  H04N2201/04786 ,  H04N2201/04793 ,  H04N2201/04794

摘要： A recording apparatus includes a recording unit for recording an image on a recording medium in accordance with the image data; a speed detection unit for detecting the feed speed of the recording medium or a feed unit for feeding the recording medium; and a control unit for controlling the record timing of the recording unit in accordance with the feed speed of the recording medium or feed unit detected by the speed detection unit.

公开(公告)号：EP0535783A1

公开(公告)日：1993-04-07

申请号：EP92306572.6

申请日：1992-07-17

申请人： XEROX CORPORATION

发明人： Hunter, Timothy M. ,  Pham, Hung M. ,  Zanghi, John L.

IPC分类号： H04N1/04

CPC分类号： H04N1/053 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/02439 ,  H04N2201/0471 ,  H04N2201/04732 ,  H04N2201/04744 ,  H04N2201/04786 ,  H04N2201/04794

摘要： An apparatus and method of reducing pixel clock jitter in a raster scanner having a oscillator (49) which generates a pixel clock signal (PC) and a start of scan sensor (38) for generating a start of scan signal, includes the generation of an inverted pixel clock signal (PCINV) and an inverted start of scan signal. Based on which of the pixel clock signal (PC) or the inverted pixel clock signal (PCINV) has a rising edge closer to the start of scan signal, one of the pixel clock or inverted pixel clock signal is selected to replace the original pixel clock signal. Further selections are prevented from occurring until a subsequent start of scan signal is detected.

摘要翻译： 一种在具有生成像素时钟信号（PC）的振荡器（49）和用于产生扫描信号的开始的扫描传感器（38）的开始的光栅扫描器中减少像素时钟抖动的装置和方法包括： 反相像素时钟信号（PCINV）和扫描信号的反相启动。 基于哪个像素时钟信号（PC）或反相像素时钟信号（PCINV）具有更接近扫描信号开始的上升沿，选择像素时钟或反相像素时钟信号之一来代替原始像素时钟 信号。 直到检测到扫描信号的后续开始才能防止进一步的选择。