公开(公告)号：US5617132A

公开(公告)日：1997-04-01

申请号：US352781

申请日：1994-12-01

Applicant: Tibor Fisli

Inventor： Tibor Fisli

IPC: G03G15/01 ,  B41J2/47 ,  G02B26/10 ,  H04N1/053 ,  H04N1/113 ,  H04N1/12 ,  G11B7/00 ,  G11B7/08 ,  H04N1/23

CPC classification number: H04N1/053 ,  B41J2/471 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/0471 ,  H04N2201/04768

Abstract: A raster scanning optical system and method for adjusting the pixel placement of light beams being scanned across an image receiving device. A spot velocity of a first laser beam is measured and then a spot velocity of a second laser beam is measured. From these measurements, the pixel positions of each of the beams can be determined. The firing rate of the second laser beam is then adjusted to adjust the pixel placement of the second beam. This helps avoid problems caused by tangentially offset laser diodes that scan with varying spot linearities.

Abstract translation: 一种用于调整在图像接收装置上扫描的光束的像素位置的光栅扫描光学系统和方法。 测量第一激光束的光点速度，然后测量第二激光束的光点速度。 从这些测量可以确定每个光束的像素位置。 然后调整第二激光束的点火速率以调整第二光束的像素布置。 这有助于避免由具有不同光斑线性扫描的切向偏移激光二极管引起的问题。

公开(公告)号：US5594556A

公开(公告)日：1997-01-14

申请号：US215840

申请日：1994-03-21

Applicant: Eliyahu Vronsky ,  Boaz Kenan

Inventor： Eliyahu Vronsky ,  Boaz Kenan

IPC: G02B26/12 ,  H03H19/00 ,  H03H21/00 ,  H04N1/047 ,  H04N1/113 ,  H04N1/12 ,  H04N1/04 ,  G02B26/08

CPC classification number: G02B26/127 ,  H04N1/0473 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/0471 ,  H04N2201/0476

Abstract: A laser scanning device is disclosed which includes a spinner, one light spot misalignment detector and a beam misalignment corrector. The spinner scans a light beam across a scanning line. The detector is located generally at a beginning of the scanned line and measures an initial misalignment of the light spot in a cross-scanning direction. The corrector dynamically corrects, during scanning along said scanning line, the scanning misalignment of the light beam in accordance with at least the initial misalignment. The corrector includes a pre-positioner which determines an offset for the initial misalignment, a pyramidal error estimator which estimates a first portion of the misalignment due to pyramidal error and a wobble estimator which estimate a second portion of the misalignment caused by wobble. The estimations are summed together and used for correcting the misalignment.

Abstract translation: 公开了一种激光扫描装置，其包括旋转器，一个光点未对准检测器和光束未对准校正器。 旋转器扫描扫描线上的光束。 检测器大致位于扫描线的开始处，并测量光斑在横扫描方向上的初始偏移。 校正器在沿着扫描线扫描期间根据至少初始未对准来动态校正光束的扫描未对准。 校正器包括：预定位器，其确定初始未对准的偏移;金字塔形误差估计器，其估计由于锥体误差引起的未对准的第一部分;以及摆动估计器，其估计由摆动引起的未对准的第二部分。 将估计相加在一起并用于校正未对准。

公开(公告)号：US5585926A

公开(公告)日：1996-12-17

申请号：US987364

申请日：1992-12-07

Applicant: Shinichi Fujii ,  Shinya Matsuda ,  Noriyuki Okisu ,  Satoshi Nakamura ,  Toshihiko Karasaki

Inventor： Shinichi Fujii ,  Shinya Matsuda ,  Noriyuki Okisu ,  Satoshi Nakamura ,  Toshihiko Karasaki

IPC: H04N1/00 ,  H04N1/053 ,  H04N1/10 ,  H04N1/193 ,  H04N1/195 ,  H04N1/387 ,  H04N1/401 ,  H04N1/409 ,  H04N1/40

CPC classification number: G06T3/0031 ,  H04N1/00681 ,  H04N1/00716 ,  H04N1/00737 ,  H04N1/00766 ,  H04N1/053 ,  H04N1/387 ,  H04N1/401 ,  H04N1/4092 ,  H04N1/1013 ,  H04N1/193 ,  H04N1/195 ,  H04N2201/0434 ,  H04N2201/0471 ,  H04N2201/04787

Abstract: In a document reading apparatus capable of picking up image data of documents from above position thereof, curvature of the documents is detected by measuring the height of the document surface. In accordance with the detected curvature, interpolative and expansional processing to the picked up image data is executed. Distorted image data of the documents due to the curvature is thereby corrected.

Abstract translation: 在能够从其上方位置拾取文件的图像数据的文件读取装置中，通过测量文件表面的高度来检测文档的曲率。 根据检测到的曲率，执行对拾取的图像数据的内插和扩展处理。 由此校正了由于曲率引起的文件的扭曲图像数据。

公开(公告)号：US5578819A

公开(公告)日：1996-11-26

申请号：US493556

申请日：1995-06-22

Applicant: Keiji Kataoka ,  Susumu Saito ,  Shuuho Yokokawa ,  Satoshi Aita ,  Muneyoshi Akai ,  Shigeo Nemoto ,  Isao Nakajima ,  Hitomi Shimizu ,  Kunitomo Takahashi ,  Youji Hirose

Inventor： Keiji Kataoka ,  Susumu Saito ,  Shuuho Yokokawa ,  Satoshi Aita ,  Muneyoshi Akai ,  Shigeo Nemoto ,  Isao Nakajima ,  Hitomi Shimizu ,  Kunitomo Takahashi ,  Youji Hirose

IPC: G02B26/10 ,  G06K15/12 ,  G11B7/0025 ,  G11B7/085 ,  G11B7/14 ,  H04N1/053 ,  H04N1/113 ,  H04N1/191 ,  H01J3/14

CPC classification number: G11B7/14 ,  G06K15/1261 ,  H04N1/053 ,  G11B7/0025 ,  G11B7/08564 ,  H04N1/1135 ,  H04N1/1911 ,  H04N2201/0471 ,  H04N2201/04781

Abstract: A simple optical recorder which permits alignment of scanning positions of a plurality of laser beams with high accuracy and effects optical recording using the laser beams. The optical recorder is provided with a photosensitive drum which is scanned by a plurality of laser beams formed in rows at an inclined angle with respect to the direction of scan, a single photosensor for sensing each of the sweep positions of the laser beams, and a controller for controlling the scanning positions of the laser beams on the basis of a sensing result of the sensor. The controller is made up of an optical sensing signal separation circuit, synchronous clock generation circuits, FIFO memory circuit elements, and OR circuits.

Abstract translation: 一种简单的光学记录器，其允许高精度地对齐多个激光束的扫描位置并且使用激光束实现光学记录。 光学记录仪设置有感光鼓，其由相对于扫描方向以倾斜角度形成的多个激光束扫描，用于感测激光束的每个扫描位置的单个光电传感器，以及 控制器，用于基于传感器的感测结果来控制激光束的扫描位置。 控制器由光感测信号分离电路，同步时钟发生电路，FIFO存储电路元件和OR电路组成。

公开(公告)号：US5541637A

公开(公告)日：1996-07-30

申请号：US99560

申请日：1993-07-30

Applicant: Tsuyoshi Ohashi ,  Shinichi Hirahata

Inventor： Tsuyoshi Ohashi ,  Shinichi Hirahata

IPC: H04N1/053 ,  H04N1/113 ,  H04N1/21

CPC classification number: H04N1/053 ,  H04N1/1135 ,  H04N2201/0471 ,  H04N2201/04755 ,  H04N2201/04774

Abstract: An image exposure apparatus for eliminating discrepancies between the positions in the main scanning direction desired to be exposed and actually exposed by a laser beam. This may be achieved by controlling the rotational speed of the polygon mirror based on accurate rotation information. A first and second beam detectors for detecting the scanning laser beam in the main scanning direction are positioned at either side of the region of a recording medium where an image is to be formed. These detectors output signals upon detecting the laser beam. The scanning speed in the main scanning direction is calculated based on these signals. Further, deviation in speed in the main scanning direction is obtained from these signals. Rotational speed and phase information obtained about the polygon mirror using a clock signal is added to scanning speed deviation to control rotational speed of the polygon mirror. The variation in rotation of the polygon mirror may be compensated for by modulating frequency of an image clock signal according to the variation in scanning speed of the laser beam. Discrepancies may also be eliminated by timing the image signals that modulate the laser beam to compensate for variations in the speed of the polygon mirror.

Abstract translation: 一种图像曝光装置，用于消除所期望的被曝光的实际曝光的主扫描方向上的位置之间的差异。 这可以通过基于精确的旋转信息来控制多面镜的旋转速度来实现。 用于在主扫描方向上检测扫描激光束的第一和第二光束检测器位于要形成图像的记录介质的区域的任一侧。 这些检测器在检测到激光束时输出信号。 基于这些信号计算主扫描方向的扫描速度。 此外，从这些信号获得主扫描方向上的速度偏差。 使用时钟信号获得的关于多面镜的旋转速度和相位信息被添加到扫描速度偏差以控制多面镜的旋转速度。 可以通过根据激光束的扫描速度的变化来调制图像时钟信号的频率来补偿多面镜的旋转变化。 也可以通过对调制激光束的图像信号进行定时来补偿多面体镜的速度的变化来消除偏差。

公开(公告)号：US5485195A

公开(公告)日：1996-01-16

申请号：US78337

申请日：1993-06-21

Applicant: Aron Nacman

Inventor： Aron Nacman

IPC: G02B26/10 ,  G06F1/06 ,  G06K15/12 ,  H04N1/053 ,  H04N1/113 ,  H04M1/21

CPC classification number: H04N1/053 ,  G06K15/1219 ,  H04N1/1135 ,  H04N2201/0471 ,  H04N2201/04784

Abstract: Fast scan jitter in a ROS scanning system is substantially reduced by use of a multi-phase clock derived from a crystal oscillator. The rising edge of a start-of-scan signal is compared to the clock signal and the phase of that clock signal which is next in time to the SOS signal is used for that scan. For one example given, the scan-to-scan jitter is limited to within 1/8 the pixel period with even higher levels of accuracy possible.

Abstract translation: 通过使用从晶体振荡器得到的多相时钟，ROS扫描系统中的快速扫描抖动显着降低。 将扫描起始信号的上升沿与时钟信号进行比较，并将该时钟信号的时钟信号的相位与SOS信号的时间相关用于该扫描。 对于一个示例，扫描到扫描抖动被限制在像素周期的1/8内，甚至更高的准确度可能。

公开(公告)号：US5451777A

公开(公告)日：1995-09-19

申请号：US182488

申请日：1994-01-14

Applicant: Lawrence S. Blake ,  Arthur J. Bellemore ,  Ralph S. Hanseler ,  David P. Viola

Inventor： Lawrence S. Blake ,  Arthur J. Bellemore ,  Ralph S. Hanseler ,  David P. Viola

IPC: G02B26/10 ,  F16H19/02 ,  H04N1/047 ,  H04N1/06

CPC classification number: B82Y15/00 ,  H04N1/0473 ,  H04N1/0607 ,  H04N1/0635 ,  H04N2201/0471 ,  H04N2201/04755

Abstract: A scanning apparatus is disclosed in an imagesetter with an internal drum recording surface, having an improved carriage system which is self-propelled and carries scanning optics for recording an image including a spin motor/mirror, a laser diode, and a focusing lens. The drive system is mounted to the carriage to allow the carriage to move linearly inside the drum as a self-propelled direct drive. An electronic control device mounted on the carriage provides precision motion control of the carriage.

Abstract translation: 在具有内鼓记录表面的成像器中公开了一种扫描装置，其具有自推进的改进的托架系统，并且携带用于记录包括旋转马达/反射镜，激光二极管和聚焦透镜的图像的扫描光学器件。 驱动系统安装到滑架上，以允许滑架作为自推进的直接驱动器在滚筒内线性移动。 安装在滑架上的电子控制装置提供滑架的精确运动控制。

公开(公告)号：US5448267A

公开(公告)日：1995-09-05

申请号：US337232

申请日：1994-11-04

Applicant: Yoshinori Sugiura ,  Akihiko Takeuchi

Inventor： Yoshinori Sugiura ,  Akihiko Takeuchi

IPC: B41J2/44 ,  B41J2/47 ,  G03G15/00 ,  G03G15/04 ,  G03G15/32 ,  G03G21/14 ,  G06K15/12 ,  H04N1/047 ,  H04N1/113 ,  H04N1/12 ,  G01D9/42

CPC classification number: B41J2/471 ,  G03G15/04072 ,  G03G15/326 ,  G06K15/1204 ,  H04N1/047 ,  G06K2215/0085 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/0471 ,  H04N2201/04789 ,  H04N2201/04791

Abstract: A laser beam printer which includes a laser beam emitting device for emitting a laser beam which has been modulated in accordance with image information; a rotatable deflecting device for rotatably deflecting the laser beam emitted from the beam emitting device; a rotatable photosensitive member which is scanningly exposed to light by the laser beam deflected by the deflecting device; and a control device for controlling the rotation of the deflecting device and that of the photosensitive member. The control device starts the rotation of the deflecting device after starting the rotation of the photosensitive member, so that the deflecting device reaches a predetermined rotational speed simultaneously with completion of pre-rotation of the photosensitive member.

Abstract translation: 一种激光束打印机，其包括用于发射根据图像信息被调制的激光束的激光束发射装置; 可旋转偏转装置，用于可旋转地偏转从所述光束发射装置发射的激光束; 通过由偏转装置偏转的激光束扫描地暴露于光的可旋转感光构件; 以及用于控制偏转装置和感光构件的旋转的控制装置。 控制装置在开始感光构件的旋转之后开始偏转装置的旋转，使得偏转装置在完成感光构件的预旋转的同时达到预定转速。

公开(公告)号：US5371608A

公开(公告)日：1994-12-06

申请号：US43931

申请日：1993-04-08

Applicant: Kenji Muto ,  Masayuki Suzuki ,  Yoshinobu Shiraiwa

Inventor： Kenji Muto ,  Masayuki Suzuki ,  Yoshinobu Shiraiwa

IPC: B41J2/44 ,  G02B26/10 ,  G02B26/12 ,  G02B27/00 ,  G06K15/12 ,  H04N1/047 ,  H04N1/113 ,  H04N1/12 ,  H04N1/23 ,  H04N1/36

CPC classification number: G06K15/1219 ,  H04N1/047 ,  G02B27/0018 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/0471 ,  H04N2201/04729 ,  H04N2201/04731 ,  H04N2201/04789 ,  H04N2201/04791

Abstract: A scan optical apparatus is provided with a first light source for generating a beam for scan optically modulated based on an image signal, a second light source for generating a beam for jitter amount detection, a scanning device for deflecting the beams from the first light source and from the second light source to scan a surface to be scanned, an optical member disposed in the vicinity of the surface to be scanned or at a position substantially optically equivalent to the surface to be scanned, and a detecting device for detecting a beam reflected by the optical member and deflected by the scanning device. The optical member may have reflective portions and nonreflective portions which are repeatedly arranged in a main scan direction, or may be a corner cube array in which a plurality of corner cubes are arranged in the main scan direction. Further, the surface to be scanned may be a recording medium in a recording apparatus.

Abstract translation: 扫描光学装置具有第一光源，用于产生用于基于图像信号光学扫描的光束的光束，用于产生用于抖动量检测的光束的第二光源，用于使来自第一光源的光束偏转的扫描装置 并且从第二光源扫描要扫描的表面，设置在待扫描表面附近的光学构件或与要扫描的表面基本上光学相当的位置，以及检测装置，用于检测反射的光束 由光学构件通过扫描装置偏转。 光学构件可以具有沿主扫描方向重复布置的反射部分和非反射部分，或者可以是在主扫描方向上布置多个角立方体的角立方体阵列。 此外，待扫描的表面可以是记录装置中的记录介质。

公开(公告)号：US5353122A

公开(公告)日：1994-10-04

申请号：US123970

申请日：1993-09-21

Applicant: Duk-Soo Kim

Inventor： Duk-Soo Kim

IPC: G06K15/12 ,  H04N1/053 ,  H04N1/23 ,  H04N1/21

CPC classification number: H04N1/2361 ,  G06K15/12 ,  H04N1/053 ,  H04N1/2307 ,  G06K2215/0077 ,  H04N2201/0471 ,  H04N2201/04767

Abstract: A printing control apparatus compatible with printing systems of a laser scanning unit type and a light emitting diode type contemplates a synchronizing signal supplying circuit which receives at least one signal out of a light emitting diode horizontal synchronizing signal generated when a period of a horizontal synchronizing signal of a light emitting diode type coincides with a given counting period and a beam detecting signal, and supplying a horizontal synchronizing signal corresponding to a printing system in response to a synchronizing select signal. A clock generating circuit generates a reference clock necessary for the generation of a plurality of signals and generates a video clock from the reference clock in response to the horizontal synchronizing signal and a latch driving signal from the reference clock. A latch signal generator generates a data latch signal having a given period from the reference clock in response to the latch driving signal. A strobe signal generator generates strobe signals to emit a light emitting diode array. A data output circuit generates video data to be printed according to a mode select signal. A control signal generator provides the synchronizing select signal to the synchronizing signal supplying circuit by latching an external control signal, provides the mode select signal to the data output circuit, and provides a laser diode control signal and a laser scanning unit motor control signal to the laser scanning unit.

Abstract translation: 与激光扫描单元类型和发光二极管类型的打印系统相兼容的打印控制设备设想同步信号提供电路，其从水平同步信号的周期产生的发光二极管水平同步信号中接收至少一个信号 发光二极管类型与给定的计数周期和光束检测信号一致，并响应于同步选择信号提供对应于打印系统的水平同步信号。 时钟产生电路产生用于产生多个信号所必需的参考时钟，并且响应于来自参考时钟的水平同步信号和锁存器驱动信号，从参考时钟产生视频时钟。 锁存信号发生器响应于锁存驱动信号，从参考时钟产生具有给定周期的数据锁存信号。 选通信号发生器产生选通信号以发射发光二极管阵列。 数据输出电路根据模式选择信号产生要打印的视频数据。 控制信号发生器通过锁存外部控制信号向同步信号提供电路提供同步选择信号，向数据输出电路提供模式选择信号，并将激光二极管控制信号和激光扫描单元电机控制信号提供给 激光扫描单元。