公开(公告)号：US07369148B2

公开(公告)日：2008-05-06

申请号：US10795336

申请日：2004-03-09

Applicant: Mitsuo Shiraishi

Inventor： Mitsuo Shiraishi

IPC: B41J2/435 ,  B41J2/47

CPC classification number: H04N1/053 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/02439 ,  H04N2201/0471 ,  H04N2201/04732 ,  H04N2201/04744 ,  H04N2201/04774 ,  H04N2201/04793 ,  H04N2201/04794

Abstract: A frequency modulation apparatus capable of reducing a peak level of a radiation noise of a characteristic frequency band due to an image clock. This frequency modulation apparatus is used in an image formation apparatus having an image bearing body to be scanned by a laser beam. An auxiliary clock calculating portion calculates an auxiliary clock period based on a reference clock period and a modulation coefficient, and an image clock generating portion generates the image clock in which a frequency is different at least in one portion and other portions of an image area on a main scan line to be scanned by the laser beam on the image bearing body based on the initial period value set in advance and the auxiliary clock period, and the image clock generating portion performs a frequency modulation so that the frequency of the image clock changes within a predetermined fluctuation.

Abstract translation: 一种能够降低由于图像时钟引起的特征频带的辐射噪声的峰值电平的频率调制装置。 该频率调制装置用于具有要被激光束扫描的图像承载体的图像形成装置中。 辅助时钟计算部分基于参考时钟周期和调制系数来计算辅助时钟周期，并且图像时钟产生部分至少在图像区域的一部分和其他部分中生成频率不同的图像时钟 基于预先设定的初始周期值和辅助时钟周期的激光束在图像承载体上扫描的主扫描线，并且图像时钟产生部分执行频率调制，使得图像时钟的频率改变 在预定的波动范围内。

公开(公告)号：US07355765B2

公开(公告)日：2008-04-08

申请号：US10413203

申请日：2003-04-15

Applicant: Yoshiki Yoshida

Inventor： Yoshiki Yoshida

IPC: H04N1/46 ,  G01D15/14

CPC classification number: H04N1/053 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/02439 ,  H04N2201/02443 ,  H04N2201/0471 ,  H04N2201/04722 ,  H04N2201/04732 ,  H04N2201/04739 ,  H04N2201/04744 ,  H04N2201/04755 ,  H04N2201/04768 ,  H04N2201/04794 ,  H04N2201/04798

Abstract: An optical scanning apparatus provides improved image quality by changing the amount of writing scale compensation for a pixel clock during a scanning cycle. A pixel clock generation unit of the optical scanning apparatus divides the scanning cycle into multiple division periods. A phase change of the pixel clock is carried out for each of the division periods. The phase change can also be different from scanning cycle to scanning cycle.

Abstract translation: 光学扫描装置通过改变扫描周期内的像素时钟的写入标度补偿量来提供改进的图像质量。 光扫描装置的像素时钟生成单元将扫描周期分割为多个分割周期。 针对每个分割周期执行像素时钟的相位变化。 相位变化也可能不同于扫描周期到扫描周期。

公开(公告)号：US07354128B2

公开(公告)日：2008-04-08

申请号：US11088040

申请日：2005-03-23

Applicant: Yoshikazu Koike

Inventor： Yoshikazu Koike

IPC: B41J29/38

CPC classification number: H04N1/047 ,  B41J3/28 ,  B41J3/543 ,  B41J11/007 ,  B41J11/008 ,  B41J29/38 ,  H04N1/12 ,  H04N1/193 ,  H04N1/506 ,  H04N2201/02439 ,  H04N2201/0315 ,  H04N2201/0471 ,  H04N2201/0472 ,  H04N2201/04729 ,  H04N2201/04731 ,  H04N2201/04732 ,  H04N2201/04734 ,  H04N2201/04741 ,  H04N2201/04758 ,  H04N2201/04789 ,  H04N2201/04794

Abstract: To make it possible to improve a printing speed.When printing a plurality of printing sheets 14, it is possible to decrease the time for generating correction data by using a pair of correction data values to print the printing sheets 14. Therefore, it is possible to decrease the time for printing each printing sheet 14 even compared to the case of a method for generating correction data for each printing sheet 14. As a result, even when the number of sheets to be printed is large, it is possible to improve a printing speed. Moreover, when meandering states of the printing sheet 14 are changed, it is possible to prevent disorder of a printed image due to meandering of the printing sheet 14 for a long time by newly generating correction data. Furthermore, by generating (updating) only a part of correction data when newly generating the correction data, it is possible to decrease the time for generating the correction data and improve a printing speed.

Abstract translation: 以提高打印速度。 当打印多个打印纸张14时，可以通过使用一对校正数据值来减少用于产生校正数据的时间来打印打印纸张14。 因此，即使与用于生成每个打印纸张14的校正数据的方法的情况相比，也可以减少打印每个打印纸张14的时间。 结果，即使要打印的纸张数量大，也可以提高打印速度。 此外，当打印纸14的曲折状态改变时，可以通过新产生校正数据来防止长时间由于打印纸14的曲折而导致的打印图像的混乱。 此外，通过在新生成校正数据时仅产生（更新）一部分校正数据，可以减少生成校正数据的时间并提高打印速度。

公开(公告)号：US20080002016A1

公开(公告)日：2008-01-03

申请号：US11594087

申请日：2006-11-08

Applicant: Se-tae Kim

Inventor： Se-tae Kim

IPC: B41J2/435 ,  B41J2/47

CPC classification number: H04N1/053 ,  H04N1/1135 ,  H04N2201/02439 ,  H04N2201/0468 ,  H04N2201/0471 ,  H04N2201/04732 ,  H04N2201/04744 ,  H04N2201/04755 ,  H04N2201/04794

Abstract: An optical scanning device and method of optical scanning are provided. The optical scanning unit includes a resonant mirror controller scanning light emitted from a laser diode on a photoconductive drum, a first receive light sensor which receives the light scanned by the resonant mirror controller, and outputs a first horizontal synchronization signal which determines a start position of optical scanning according to the received light, and a video signal controller, responding to the first horizontal synchronization signal output from the first receive light sensor, controls the laser diode so that light corresponding to a video signal is emitted. In the optical scanning unit, a video signal controller can receive a plurality of horizontal synchronization signals (SOS; Start of Scan) through only one input pin irrespective of the number of receive light sensors which generate horizontal synchronization signals (SOS; Start Of Scan), which correspond to a start position of optical scanning.

Abstract translation: 提供光学扫描装置和光学扫描方法。 光扫描单元包括：谐振反射镜控制器，扫描从感光鼓上的激光二极管发射的光;第一接收光传感器，接收由谐振反射镜控制器扫描的光，并输出第一水平同步信号，其确定开始位置 根据接收到的光的光学扫描，以及视频信号控制器，响应于从第一接收光传感器输出的第一水平同步信号，控制激光二极管，使得对应于视频信号的光被发射。 在光学扫描单元中，视频信号控制器可以通过仅一个输入引脚接收多个水平同步信号（SOS;起始扫描），而不考虑产生水平同步信号（SOS;起始扫描）的接收光传感器的数量， ，其对应于光学扫描的开始位置。

公开(公告)号：US07287700B2

公开(公告)日：2007-10-30

申请号：US11195741

申请日：2005-08-03

Applicant: Kouichi Takaki ,  Kenji Izumiya ,  Toshihiro Motoi

Inventor： Kouichi Takaki ,  Kenji Izumiya ,  Toshihiro Motoi

IPC: G06K7/10

CPC classification number: H04N1/053 ,  G02B26/123 ,  H04N1/1135 ,  H04N1/1911 ,  H04N2201/02439 ,  H04N2201/0471 ,  H04N2201/04732 ,  H04N2201/04744 ,  H04N2201/04781 ,  H04N2201/04786 ,  H04N2201/04794

Abstract: A laser scanning apparatus includes: a plurality of laser light sources including a first laser light source and a second laser light source; a scanner for scanning laser lights emitted from the plurality of laser light sources in a main scanning direction; a light receiving sensor for receiving the laser lights deflected and scanned by the scanner; and a signal generation unit for generating a first signal which is in synchronization with a pixel clock for the second laser light source based on an output from the light receiving sensor obtained by a laser light emitted from the first laser light source, and for generating a second signal which is in synchronization with a pixel clock for the first laser light source based on an output from the light receiving sensor obtained by a laser light emitted from the second laser light source.

Abstract translation: 激光扫描装置包括：多个激光源，包括第一激光光源和第二激光光源; 扫描器，用于沿主扫描方向扫描从所述多个激光光源发射的激光; 用于接收由扫描仪偏转和扫描的激光的光接收传感器; 信号产生单元，用于基于从由第一激光光源发射的激光获得的光接收传感器的输出，产生与第二激光光源的像素时钟同步的第一信号，并产生 第二信号，其基于从由第二激光光源发射的激光获得的光接收传感器的输出与第一激光光源的像素时钟同步。

公开(公告)号：US07250961B2

公开(公告)日：2007-07-31

申请号：US10225482

申请日：2002-08-22

Applicant: Katsuto Sumi ,  Fumiaki Miyamaru

Inventor： Katsuto Sumi ,  Fumiaki Miyamaru

IPC: B41J27/00

CPC classification number: H04N1/00018 ,  G02B26/10 ,  H04N1/00034 ,  H04N1/0005 ,  H04N1/00082 ,  H04N1/047 ,  H04N1/0607 ,  H04N1/0635 ,  H04N2201/02439 ,  H04N2201/0476 ,  H04N2201/04794

Abstract: The light beam scanning method and apparatus perform light beam scanning of a cylindrical internal surface scanning type, a cylindrical external surface scanning type, and a plane scanning type, where when a sheet-like object to be scanned is scanned by a light beam emitted from a light source, at least one of lateral displacement and longitudinal displacement of a light beam and aberration in an optical system is compensated by controlling a wave front of the light beam with a wavefront control device. Also, when the lateral displacement, longitudinal displacement, and the aberration are caused by change of an environmental temperature, it is possible to measure the environmental temperature and to perform compensation through the control of the wave front by the wavefront control device based on the measured environmental temperature. Also, when scanning is performed using a plurality of light beams, it is possible to align scanning positions of the plurality of light beams in an auxiliary scanning direction in a parallel manner by displacing the scanning positions through the control of the wave front of at least one light beam using the wavefront control device.

Abstract translation: 光束扫描方法和装置执行圆柱形内表面扫描型，圆柱形外表面扫描型和平面扫描型的光束扫描，其中当被扫描的片状物体被从 光源，通过用波前控制装置控制光束的波前来补偿光束的横向位移和纵向位移以及光学系统中的像差中的至少一个。 此外，当横向位移，纵向位移和像差由环境温度的变化引起时，可以通过波前控制装置基于测量的环境温度来测量环境温度并通过波前控制来控制波前的补偿 环境温度。 此外，当使用多个光束进行扫描时，可以通过平移的方式使辅助扫描方向上的多个光束的扫描位置通过至少波前的控制来移动扫描位置来对齐 一个光束使用波前控制装置。

公开(公告)号：US07187397B2

公开(公告)日：2007-03-06

申请号：US11214775

申请日：2005-08-31

Applicant: Koji Tanimoto ,  Kenichi Komiya ,  Jun Sakakibara ,  Naoaki Ide ,  Toshimitsu Ichiyanagi

Inventor： Koji Tanimoto ,  Kenichi Komiya ,  Jun Sakakibara ,  Naoaki Ide ,  Toshimitsu Ichiyanagi

IPC: B41J2/47 ,  B41J2/435

CPC classification number: B41J2/473 ,  G02B26/127 ,  H04N1/0473 ,  H04N1/1135 ,  H04N1/1911 ,  H04N2201/02439 ,  H04N2201/04712 ,  H04N2201/04734 ,  H04N2201/04744 ,  H04N2201/04749 ,  H04N2201/04762 ,  H04N2201/04794

Abstract: A light beam position detecting device detects the passage positions of a plurality of light beams for scanning the surface of a photosensitive drum. The light beam position detecting device has a sensor pattern for generating an output which is continuously changed in a wide range with a variation in the passage position of the light beam in a sub-scanning direction perpendicular to a main scanning direction of the light beam. The sensor pattern precisely detects the relative scanning position of the light beam in a wide range. The passage positions of the plurality of light beams for scanning the surface of the photosensitive drum are controlled to a preset position based on the output of the sensor pattern.

Abstract translation: 光束位置检测装置检测用于扫描感光鼓表面的多个光束的通过位置。 光束位置检测装置具有用于产生在与光束的主扫描方向正交的副扫描方向上的光束的通过位置的变化在宽范围内连续变化的输出的传感器图案。 传感器图案在宽范围内精确地检测光束的相对扫描位置。 用于扫描感光鼓表面的多个光束的通过位置基于传感器图案的输出被控制到预设位置。

公开(公告)号：US20070047048A1

公开(公告)日：2007-03-01

申请号：US11509444

申请日：2006-08-24

Applicant: Hitomi Shimizu

Inventor： Hitomi Shimizu

IPC: G02B26/08

CPC classification number: G02B26/122 ,  G06K15/129 ,  H04N1/047 ,  H04N1/1135 ,  H04N2201/02439 ,  H04N2201/0471 ,  H04N2201/04734 ,  H04N2201/04739 ,  H04N2201/04744 ,  H04N2201/04781 ,  H04N2201/04794 ,  Y10S359/90

Abstract: An optical beam scanner includes a driving unit rotating a rotary polygon mirror that deflects and scans an optical beam; a rotation position detection unit; a rotation control unit controlling the driving unit in accordance with a rotation reference signal and an output signal of the rotation position detection unit; an optical beam detection unit detecting the optical beam at a predetermined position on a scanning path so as to generate a horizontal synchronizing signal; a first timing generation unit generating a first reference timing so as to print a first surface; a second timing generation unit generating a second reference timing so as to print a second surface; a timing measurement unit measuring a counter value according to the horizontal synchronizing signal; and a phase control unit controlling a phase of the rotation reference signal in accordance with the counter value obtained by the timing measurement unit.

Abstract translation: 光束扫描器包括旋转偏转和扫描光束的旋转多面镜的驱动单元; 旋转位置检测单元; 旋转控制单元，其根据旋转参考信号和所述旋转位置检测单元的输出信号来控制所述驱动单元; 光束检测单元，在扫描路径上的预定位置处检测光束，以产生水平同步信号; 产生第一基准定时以便打印第一表面的第一定时产生单元; 产生第二基准定时以便打印第二表面的第二定时产生单元; 定时测量单元，根据水平同步信号测量计数器值; 以及相位控制单元，其根据由定时测量单元获得的计数器值来控制旋转参考信号的相位。

公开(公告)号：US20060114309A1

公开(公告)日：2006-06-01

申请号：US11000835

申请日：2004-12-01

Applicant: Craig Bush

Inventor： Craig Bush

IPC: B41J2/385 ,  G01D15/06 ,  G03G15/01

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

Abstract: 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.

Abstract translation: 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：US20050243163A1

公开(公告)日：2005-11-03

申请号：US11102860

申请日：2005-04-11

Applicant: Dan Ozasa ,  Masaaki Ishida

Inventor： Dan Ozasa ,  Masaaki Ishida

IPC: B41J2/44 ,  B41J27/00 ,  G06F1/06 ,  H03L7/07 ,  H03L7/081 ,  H03L7/099 ,  H04N1/036 ,  H04N1/053 ,  H04N1/113 ,  H04N1/12 ,  H04N1/191

CPC classification number: H03L7/07 ,  H03L7/0812 ,  H03L7/0995 ,  H04N1/053 ,  H04N1/1135 ,  H04N1/12 ,  H04N1/1911 ,  H04N2201/02439 ,  H04N2201/0471 ,  H04N2201/04732 ,  H04N2201/04744 ,  H04N2201/04781 ,  H04N2201/04794

Abstract: A pixel clock generation circuit is disclosed, including a high frequency clock generation unit configured to generate high frequency clock, a clock modulation data generation unit configured to generate clock modulation data based on pixel clock phase data indicating timing of a transition in pixel clock. The pixel clock generation circuit further includes a modulation clock generation unit configured to modulate the frequency and phase of the high frequency clock based on the modulation data thereby to generate modulated pixel clock.

Abstract translation: 公开了一种像素时钟生成电路，包括被配置为产生高频时钟的高频时钟生成单元，时钟调制数据生成单元，被配置为基于指示像素时钟中的转移的定时的像素时钟相位数据生成时钟调制数据。 像素时钟生成电路还包括：调制时钟生成单元，被配置为基于调制数据调制高频时钟的频率和相位，从而生成调制像素时钟。