公开(公告)号：US5353048A

公开(公告)日：1994-10-04

申请号：US873755

申请日：1992-04-27

Applicant: Makoto Kanai

Inventor： Makoto Kanai

IPC: B41J2/44 ,  G02B26/10 ,  G03G15/04 ,  G06K15/12 ,  H04N1/04 ,  H04N1/053 ,  H04N1/113 ,  H04N1/12 ,  H04N1/407 ,  H04N1/21

CPC classification number: H04N1/0411 ,  G06K15/1209 ,  H04N1/0402 ,  H04N1/0446 ,  H04N1/053 ,  H04N1/4076 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/0471 ,  H04N2201/04767

Abstract: An image recording apparatus such as a laser printer in which a beam from a laser source is deflected by a deflector such as a rotating polygon mirror and a surface to be scanned is scanned by such deflected beam. The image recording apparatus includes a light source for outputting a beam, a deflection unit for deflecting the beam in predetermined directions to scan a scanning surface, a beam detection unit for receiving the beam deflected by the deflection unit to set a reference timing every scanning operation, and a beam intensity switching unit for controlling the light source to switch an intensity of the beam by a plurality of degrees.

Abstract translation: 诸如激光打印机的图像记录装置，其中来自激光源的光束被诸如旋转多面镜的偏转器和待扫描的表面偏转，由这种偏转的光束扫描。 图像记录装置包括用于输出光束的光源，用于沿预定方向偏转光束扫描扫描表面的偏转单元，用于接收由偏转单元偏转的光束以在每个扫描操作设置基准定时的光束检测单元 以及光束强度切换单元，用于控制光源将光束的强度切换多个度。

公开(公告)号：US5341156A

公开(公告)日：1994-08-23

申请号：US837858

申请日：1992-02-18

Applicant: Tatsuya Eguchi

Inventor： Tatsuya Eguchi

IPC: G02B26/10 ,  B41J2/47 ,  G06K15/12 ,  H04N1/053 ,  H04N1/113 ,  H04N1/12 ,  B41J2/435

CPC classification number: B41J2/471 ,  G06K15/1219 ,  H04N1/053 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/0471 ,  H04N2201/04786

Abstract: A laser beam scanning type image forming apparatus having a shield member arranged at the terminal side of a main scan of photosensitive member for blocking a laser beam irradiated to the area outside of image forming area. Laser beam output is forcibly caused at a timing of the arrival at the shield member and continued until being detected by SOS sensor, the forcibly caused laser beam being blocked by the shield member. With such an arrangement, it becomes possible to detect laser beam at the time the light amount thereof is stable and to improve precision of time for detecting laser beam.

Abstract translation: 一种激光束扫描型图像形成装置，其具有设置在感光构件的主扫描的终端侧的屏蔽构件，用于阻挡照射到图像形成区域外部的区域的激光束。 激光束输出在到达屏蔽部件的时刻被强制引起，并持续直到被SOS传感器检测到，强制引起的激光束被屏蔽部件阻挡。 通过这样的布置，可以在其光量稳定时检测激光束并提高检测激光束的时间精度。

公开(公告)号：US5319393A

公开(公告)日：1994-06-07

申请号：US862154

申请日：1992-04-02

Applicant: Frank C. Genovese

Inventor： Frank C. Genovese

IPC: B41J2/44 ,  G02B26/10 ,  H04N1/047 ,  H04N1/113 ,  H04N1/12 ,  H04N1/21 ,  B41J2/435

CPC classification number: H04N1/0473 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/0471 ,  H04N2201/04758

Abstract: A scanner adapted to selectively discharge a charged photosensitive surface emits a plurality of light beams, with the plurality of light beams impinging on the charged photosensitive surface forming a composite light spot to discharge the charge thereon. The intensity of at least one of the plurality of light beams may be varied to adjust the position of the composite spot centroid on the charged photosensitive surface.

Abstract translation: 适于选择性地放电带电感光表面的扫描器发射多个光束，其中多个光束照射在带电感光表面上，形成复合光斑以在其上排出电荷。 可以改变多个光束中的至少一个光束的强度，以调整带电感光表面上的复合光点重心的位置。

公开(公告)号：US5302973A

公开(公告)日：1994-04-12

申请号：US807927

申请日：1991-12-16

Applicant: Daniel W. Costanza ,  William J. Nowak

Inventor： Daniel W. Costanza ,  William J. Nowak

IPC: B41J2/525 ,  G02B26/10 ,  G03G15/00 ,  G03G15/01 ,  G03G21/14 ,  H04N1/036 ,  H04N1/047 ,  H04N1/113 ,  H04N1/12 ,  H04N1/23 ,  H04N1/50 ,  H04N1/21 ,  B41J2/435

CPC classification number: H04N1/0473 ,  H04N1/508 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/0471 ,  H04N2201/04762

Abstract: A single pass ROS system provides a plurality of latent images which may subsequently be developed in different colors. The ROS units are initially aligned so that each color image is precisely registered at the same relative position along the exposed area of a photoreceptor belt. The alignment is accomplished by forming a pair of opposed alignment apertures in the surface of the belt and detecting coincidence or lack of coincidence of signals generated by the beginning and end of each scan line. The skew correction is enabled by rotating an optical component in the ROS system to create the required rotation of the projected scan line so as to correct for the detected skew error caused primarily by belt conicity. Once the initial X and Y-axis alignments are complete, subsequent alignment is maintained through subsequent passes by checking the positions of the previously identified pixels as they advance past additional lead edge apertures formed in the process direction along the belt surface.

Abstract translation: 单程ROS系统提供多个潜像，随后可以以不同的颜色进行显影。 初始对准ROS单元，使得每个彩色图像沿着感光带的暴露区域在相同的相对位置精确地记录。 通过在带的表面中形成一对相对的对准孔并且检测由每个扫描线的开始和结束产生的信号的一致或不一致来实现对准。 通过旋转ROS系统中的光学部件来实现倾斜校正，以创建投影扫描线的所需旋转，以便校正主要由带锥度引起的检测到的偏斜误差。 一旦初始的X和Y轴对准完成，随后的对准将通过随后的通过来检查先前识别的像素的位置，当它们沿着带表面在过程方向上形成的附加的前缘孔前进时，保持随后的对准。

公开(公告)号：US5291319A

公开(公告)日：1994-03-01

申请号：US989313

申请日：1992-12-11

Applicant: Ellis D. Harris

Inventor： Ellis D. Harris

IPC: G02B5/18 ,  G02B26/10 ,  G02B27/60 ,  H04N1/053 ,  G02B27/44

CPC classification number: H04N1/053 ,  G02B26/106 ,  G02B27/60 ,  G02B5/1876 ,  G02B5/188 ,  H04N1/1265 ,  H04N2201/0471

Abstract: An optical synchronization system uses a stationary binary diffractive optical element and a rotating disc with alternating scattering binary diffractive optical elements and transmissive elements to create a moire pattern for a synchronization signal for a pixel clock.

Abstract translation: 光学同步系统使用具有交替散射二元衍射光学元件和透射元件的固定二元衍射光学元件和旋转盘，以产生用于像素时钟的同步信号的莫尔图案。

公开(公告)号：US5278587A

公开(公告)日：1994-01-11

申请号：US970889

申请日：1992-11-03

Applicant: Andrew M. Strauch ,  Daniel W. Costanza ,  Kenneth R. Ossman ,  Fred F. Hubble, III

Inventor： Andrew M. Strauch ,  Daniel W. Costanza ,  Kenneth R. Ossman ,  Fred F. Hubble, III

IPC: B41J2/44 ,  B41J2/45 ,  B41J2/455 ,  G03G15/00 ,  G03G15/01 ,  G03G21/14 ,  H04N1/047 ,  H04N1/113 ,  H04N1/12 ,  H04N1/50 ,  G03G21/00 ,  G01D15/14

CPC classification number: G03G15/0152 ,  G03G15/011 ,  G03G15/0163 ,  H04N1/0473 ,  H04N1/506 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/0471 ,  H04N2201/04786

Abstract: The present invention is directed to a precise method of registering plurality of imaging stations, so as to form sequential images on a photoreceptor belt in a single pass. A belt hole is formed in the photoreceptor belt, outside the image area, 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. As the leading edge of the belt hole 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 is placed beneath the belt to provide a signal representing the exposure level of each scanning beam which crosses the leading edge of the advancing belt hole. The detectors 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.

Abstract translation: 本发明涉及一种用于记录多个成像站的精确方法，以便在单次通过中在感光带上形成顺序图像。 在感光带中形成带孔，在图像区域外，但在成像器扫描线的扫描内。 扫描线沿着带的宽度在横向方向依次扫过。 当带孔的前缘进入扫掠光束时，在前缘移动通过扫掠区域时将发生多个光束扫描。 由于扫描光束的高斯照明，带边缘处的曝光逐渐增加到与扫描光束的最大照明一致的最大点。 检测器放置在皮带下方，以提供表示穿过前​​进皮带孔前缘的每个扫描光束的曝光水平的信号。 检测器产生代表曝光水平的电流输出。 电流输出被转换成电压输出，然后将其用于外推过程中以确定与扫描线相交的照明轮廓的中点，并且从此获得到达光束照明中点的参考时间。 然后，该参考时间用于产生精确定时的线同步信号，该信号可通过每个成像站再现，以非常高的准确度产生每个图像序列的第一扫描线的对准。

公开(公告)号：US5257041A

公开(公告)日：1993-10-26

申请号：US722753

申请日：1991-06-28

Applicant: John M. Kresock ,  David M. Orlicki ,  Jasper S. Chandler ,  Timothy E. Neale

Inventor： John M. Kresock ,  David M. Orlicki ,  Jasper S. Chandler ,  Timothy E. Neale

IPC: G02B26/10 ,  G05B19/40 ,  G05D3/00 ,  G06K15/12 ,  H04N1/053 ,  H04N1/113 ,  H04N1/21

CPC classification number: G05B19/40 ,  G06K15/1219 ,  H04N1/053 ,  H04N1/1135 ,  H04N2201/0471 ,  H04N2201/04755 ,  H04N2201/04774 ,  H04N2201/04786

Abstract: 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.

Abstract translation: 公开了一种电动机械装置如电流计的改进的精密和准确的驱动方法和电路。 该方法精确地控制在每个操作周期的正向扫描段中的器件的高速线性扫描，并且在循环的重新跟踪段期间进一步提供非常快速的重新设置器件而没有位置过冲。 电路包括用于在每个操作周期期间产生用于控制装置的电气命令波形的存储装置，以及用于向装置施加电力的驱动伺服装置。 该电路的伺服动作基本上消除了在操作周期的每个正向扫描段期间设备的实际位置和由指令波形指示的位置之间的任何差异，结果是每个前向扫描段是高精度和可重复的。 在循环的每个重新跟踪段期间，电路以高速重新设置器件，以限制精度破坏器件过冲和振荡的影响。

公开(公告)号：US5235438A

公开(公告)日：1993-08-10

申请号：US738346

申请日：1991-08-14

Applicant: Shigeru Sasada

Inventor： Shigeru Sasada

IPC: G02B26/10 ,  G02B26/12 ,  G02B27/00 ,  G06K15/12 ,  H04N1/047 ,  H04N1/113

CPC classification number: G02B27/0031 ,  G02B26/123 ,  G06K15/1219 ,  H04N1/0473 ,  H04N1/1135 ,  H04N2201/0471 ,  H04N2201/04765

Abstract: An image scanning and recording method and apparatus for compensating for a pyramidal error of a rotating body having at least two reflective mirror surfaces by fine-adjusting an angle of a light beam incident on the rotating body. A scanning lens having a scanning characteristic of f.multidot.sin.theta. is provided on an optical path of the light beam reflected on the rotating body in such a manner that an optical axis of the scanning lens is substantially orthogonal to a rotating axis of the rotating body. The angle of the light beam incident on the rotating body is deflected by a deflecting device within a plane including the rotating axis and the optical axis for each reflective mirror surface based on an equation:sin.alpha.=cos a.multidot.sin 2.delta..multidot.cos(i+.DELTA.)-cos 2.delta..multidot.sin(i+.DELTA.)wherein.alpha.: an angle made of the light beam reflected on the rotating body and a plane including the optical axis and being orthogonal to the rotating axis,.delta.: a pyramidal error of each reflective mirror surface of the rotating body,i+.DELTA.: an angle made of the light beam incident on the rotating body and the optical axis,.DELTA.: an angle of the light beam deflected by the deflecting device, anda: an angle made of a normal line of each reflective mirror surface and the optical axis when there is no pyramidal error.

Abstract translation: 一种图像扫描和记录方法和装置，用于通过微调入射到旋转体上的光束的角度来补偿具有至少两个反射镜表面的旋转体的锥体误差。 具有fxsinθ扫描特性的扫描透镜设置在反射在旋转体上的光束的光路上，使得扫描透镜的光轴基本上与旋转体的旋转轴正交。 基于以下等式，入射到旋转体上的光束的角度由偏转装置在包括用于每个反射镜表面的旋转轴线和光轴的平面内偏转：sinα=cosθysin2Δxcos（i + DELTA） -cos 2 delta xsin（i + DELTA）其中α：由在旋转体上反射的光束构成的角度和包括光轴并且与旋转轴正交的平面，delta：每个反射镜表面的锥体误差 旋转体i + DELTA：由入射到旋转体上的光束和光轴构成的角度，DELTA：由偏转装置偏转的光束的角度，以及a：由每个 反射镜表面和光轴没有锥体误差时。

公开(公告)号：US5233402A

公开(公告)日：1993-08-03

申请号：US881455

申请日：1992-05-11

Applicant: Michio Yagi ,  Takashi Tsutsumi ,  Masaru Nagai ,  Toyoaki Sugaya ,  Satoshi Haneda

Inventor： Michio Yagi ,  Takashi Tsutsumi ,  Masaru Nagai ,  Toyoaki Sugaya ,  Satoshi Haneda

IPC: G03G15/01 ,  H04N1/047 ,  H04N1/113 ,  H04N1/12 ,  H04N1/50

CPC classification number: G03G15/011 ,  H04N1/0473 ,  H04N1/508 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/0471 ,  H04N2201/04756 ,  H04N2201/04774

Abstract: The color image forming machine such like a color printer or a color copier for forming a color image on a recording sheet. The image forming machine includes a photoreceptor belt; a belt driver for rotating the photoreceptor in a longitudinal direction; a laser beam scanner for repeatedly scanning the photoreceptor in a direction perpendicular to the longitudinal direction, with the laser beam, so that the latent image is formed on the photoreceptor; a developer for developing the latent image with plural color toners; a measuring unit for determining a rotation time of the photoreceptor; and a controller unit for controlling a scanning frequency of the laser beam scanner so that one scanning time of the laser beam scanner is set to the result of dividing the rotation time of the photoreceptor, while the photoreceptor rotates one round, by an integer.

Abstract translation: 彩色图像形成机如彩色打印机或彩色复印机，用于在记录纸上形成彩色图像。 图像形成机包括感光带; 用于沿纵向旋转感光体的皮带驱动器; 激光束扫描器，用激光束在垂直于纵向的方向上反复扫描感光体，使感光体上形成潜像; 用于利用多色调色剂显影潜像的显影剂; 用于确定感光体的旋转时间的测量单元; 以及用于控制激光束扫描器的扫描频率的控制器单元，使得激光束扫描器的一个扫描时间被设置为在感光体旋转一圈的同时将感光体的旋转时间除以整数的结果。

公开(公告)号：US5216248A

公开(公告)日：1993-06-01

申请号：US787216

申请日：1991-11-04

Applicant: Shinyu Ikeda ,  Taizo Saito ,  Yoshiyuki Araki

Inventor： Shinyu Ikeda ,  Taizo Saito ,  Yoshiyuki Araki

IPC: G01J1/04 ,  G02B26/10 ,  H04N1/047 ,  H04N1/113

CPC classification number: G02B26/10 ,  G01J1/04 ,  G01J1/0437 ,  H04N1/047 ,  G01J1/0204 ,  H04N1/1135 ,  H04N2201/0471

Abstract: A photodetector, for use as a scanning light beam detector in an optical scanner, has a light-detecting element having a light-detecting surface for detecting a scanning light beam. The photodetector has a slit film which has a light-transmissive section for allowing light to be applied to the light-detecting surface and a light-blocking section for blocking light from the light-detecting surface. The slit film is disposed directly on the light-detecting surface. The slit film is evaporated or printed directly on the light-detecting surface. Therefore, the scanning light beam is applied to a desired light-incident area of the light-detecting surface which is positioned and dimensioned with high accuracy. The slit film needs no complex procedure for fine positional adjustment as it is fixedly positioned with respect to the light-detecting element.

Abstract translation: 用作光学扫描仪中的扫描光束检测器的光检测器具有光检测元件，其具有用于检测扫描光束的光检测表面。 光电检测器具有狭缝膜，该狭缝膜具有用于允许光被施加到光检测表面的透光部分和用于阻挡来自光检测表面的光的遮光部分。 狭缝膜直接配置在光检测面上。 狭缝膜被蒸发或直接印刷在光检测表面上。 因此，扫描光束以高精度被施加到定位和定尺寸的光检测表面的期望的光入射区域。 狭缝膜不需要复杂的精细位置调整的过程，因为它相对于光检测元件固定地定位。