公开(公告)号：US07626605B2

公开(公告)日：2009-12-01

申请号：US11828241

申请日：2007-07-25

Applicant: Yujiro Nomura ,  Ken Ikuma

Inventor： Yujiro Nomura ,  Ken Ikuma

IPC: B41J2/435 ,  B41J2/47

CPC classification number: H04N1/053 ,  H04N1/00525 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/04713 ,  H04N2201/04732 ,  H04N2201/04744

Abstract: As a scanning light beam which is scanning and traveling away from an effective image region moves passed the location of a sensor, a horizontal synchronizing signal Hsync is obtained as a first detection signal. A deflection mirror surface turns around, thereby reversing the direction in which the scanning light beam scans. This scanning light beam therefore scans an effective image region IR, and a latent image forming operation using this scanning light beam is controlled based on the horizontal synchronizing signal Hsync. Hence, there is a relatively long period of time (T4+T5) since the horizontal synchronizing signal Hsync is obtained until formation of a latent image starts in accordance with the signal Hsync. This secures sufficient time for control of the latent image forming operation based on the horizontal synchronizing signal Hsync, and hence, realizes the latent image forming operation as desired during the time T6.

公开(公告)号：US07595481B2

公开(公告)日：2009-09-29

申请号：US11840372

申请日：2007-08-17

Applicant: Wataru Watanabe ,  Takahiro Chikuda

Inventor： Wataru Watanabe ,  Takahiro Chikuda

IPC: H01J3/14 ,  G02B7/04 ,  H04N1/04

CPC classification number: G01J1/4257 ,  G01J1/46 ,  G02B26/127 ,  H04N1/0473 ,  H04N1/1135 ,  H04N2201/04713 ,  H04N2201/04729 ,  H04N2201/04731 ,  H04N2201/04734 ,  H04N2201/04744

Abstract: Measurement of a scanning optical system is to be carried out simply and easily. According to the invention, a scanning optical system measuring device for making adjustment of a scanning optical system which performs scanning with a light beam, includes: plural one-dimensional position detection devices provided at a distance from each other in a scanning direction of a light beam caused to perform scanning, and arranged to intersect the scanning direction of the light beam, and configured to output light receiving position of the light beam caused to perform scanning, as an analog signal; and a detection signal processing unit configured to detect scanning state of the light beam on the basis of a detection signal of the one-dimensional position detection devices.

Abstract translation: 扫描光学系统的测量应简单而容易地进行。 根据本发明，一种用于进行用光束进行扫描的扫描光学系统的调整的扫描光学系统测量装置包括：多个一维位置检测装置，其沿光的扫描方向彼此间隔设置 光束进行扫描，并被布置为与光束的扫描方向相交，并且被配置为输出引起进行扫描的光束的光接收位置作为模拟信号; 以及检测信号处理单元，其被配置为基于所述一维位置检测装置的检测信号来检测所述光束的扫描状态。

公开(公告)号：US07589878B2

公开(公告)日：2009-09-15

申请号：US12277317

申请日：2008-11-25

Applicant: Tadashi Nakamura ,  Yoshinori Hayashi

Inventor： Tadashi Nakamura ,  Yoshinori Hayashi

IPC: G02B26/08 ,  B41J27/00

CPC classification number: G02B26/123 ,  G02B26/127 ,  H04N1/053 ,  H04N1/1135 ,  H04N2201/04713 ,  H04N2201/04729 ,  H04N2201/04732 ,  H04N2201/04744

Abstract: A common photodetecting unit detects a plurality of beams scanned by a plurality of polyhedral reflection mirrors provided in a multiple stages with a common rotation axis, and generates a synchronization detection signal based on detected beams. The reflection mirrors make a predetermined angle θ1 in a direction of rotation of the reflection mirrors. When time between two consecutive synchronization detection signals on a time line generated by the common photodetecting unit is ti, where i is a positive integer equal to or smaller than number of split beams, at least one of ti is different from others.

Abstract translation: 公共光检测单元检测由具有公共旋转轴的多级设置的多个多面体反射镜扫描的多个光束，并且基于检测到的光束生成同步检测信号。 反射镜在反射镜的旋转方向上形成预定角度θ1。 当由共用光检测单元生成的时间线上的两个连续的同步检测信号之间的时间是ti时，其中i是等于或小于分割光束数量的正整数，ti中的至少一个与其他的不同。

公开(公告)号：US07573494B2

公开(公告)日：2009-08-11

申请号：US10785117

申请日：2004-02-25

Applicant: Yoshiki Yoshida

Inventor： Yoshiki Yoshida

IPC: B41J2/47 ,  B41J2/45 ,  B41J2/385

CPC classification number: H04N1/053 ,  G03G15/043 ,  G03G15/0435 ,  G03G2215/0404 ,  H04N1/1135 ,  H04N1/12 ,  H04N1/1911 ,  H04N2201/0471 ,  H04N2201/04732 ,  H04N2201/04744 ,  H04N2201/04781 ,  H04N2201/04786

Abstract: An image forming apparatus is capable of forming a clear image by using laser beams projected from a plurality of laser light sources. The image forming apparatus forms an electrostatic latent image on a medium to be scanned by laser beams, which are projected from a plurality of laser light sources and periodically deflected by a rotational deflecting unit, so that the laser beams scan the medium, which is uniformly charged and moving in a sub-scanning direction, in a main-scanning direction perpendicular to the sub-scanning direction. A pixel clock generating unit generates pixel clocks, which are used for controlling timings of projection of the laser beams, separately for each of the laser light sources, and for performing a phase change of each of the pixel clocks; and a phase control unit that controls independently each of the pixel clocks.

Abstract translation: 图像形成装置能够通过使用从多个激光光源投射的激光束形成清晰的图像。 图像形成装置在由多个激光源投射并被旋转偏转单元周期性地偏转的激光束在待扫描的介质上形成静电潜像，使得激光束扫描均匀的介质 在与副扫描方向垂直的主扫描方向上沿副扫描方向进行充电和移动。 像素时钟生成单元生成像素时钟，用于分别对每个激光源分别控制激光束的投影定时，并进行每个像素时钟的相位变化; 以及独立地控制每个像素时钟的相位控制单元。

公开(公告)号：US07551195B2

公开(公告)日：2009-06-23

申请号：US11224027

申请日：2005-09-13

Applicant: Tadashi Minakuchi

Inventor： Tadashi Minakuchi

IPC: G02B26/10 ,  B41J2/47

CPC classification number: G06K15/1219 ,  H04N1/053 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/0471 ,  H04N2201/04732 ,  H04N2201/04744

Abstract: A light scanning device capable of scanning a light beam on a photosensitive surface includes a light receiving system configured to receive the light beam and output a light receiving signal and a synchronizing signal generating system configured to generate a synchronizing signal with which light scanning is synchronized. The synchronizing signal generating system includes a first bias superimposing system configured to superimpose a first bias signal onto the light receiving signals to generate a first light receiving signal, a second bias superimposing system configured to superimpose a second bias signal with a different level from that of the first bias signal onto the light receiving signals to generate a second light receiving signal, a waveform shaping system configured to shape the waveform of the second light receiving signal, and a comparing system configured to compare the first light receiving signal with the second light receiving signal to output the synchronizing signal.

Abstract translation: 能够扫描感光表面上的光束的光扫描装置包括被配置为接收光束并输出光接收信号的光接收系统和被配置为产生同步信号的同步信号生成系统。 同步信号发生系统包括：第一偏置叠加系统，被配置为将第一偏置信号叠加到光接收信号上以产生第一光接收信号;第二偏置叠加系统，被配置为将具有不同电平的第二偏置信号与 所述第一偏置信号到所述光接收信号上以产生第二光接收信号，波形整形系统，被配置为对所述第二光接收信号的波形进行整形;以及比较系统，被配置为将所述第一光接收信号与所述第二光接收 信号输出同步信号。

公开(公告)号：US20090103115A1

公开(公告)日：2009-04-23

申请号：US12268326

申请日：2008-11-10

Applicant: Kouichi TAKAKI

Inventor： Kouichi TAKAKI

IPC: G06K15/10 ,  H04N1/60

CPC classification number: H04N1/053 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/02443 ,  H04N2201/0471 ,  H04N2201/04717 ,  H04N2201/04732 ,  H04N2201/04744 ,  H04N2201/04749 ,  H04N2201/04768 ,  H04N2201/04774 ,  H04N2201/04798

Abstract: This invention is directed to an image printing apparatus which can print images without any halfway offset or obverse/reverse pixel offset at a low cost. An image printing apparatus includes a clock generating section which generates a dot clock as the basis of each pixel forming an image, an image printing section which prints a one-line image in a main scanning direction in accordance with image data with reference to the dot clock output from the clock generating section, and prints a one-page image by repeating in the sub-scanning direction one-line image printing performed in the main scanning direction, and a clock control section which changeably controls the frequency of the dot clock during scanning of one line in the main scanning direction.

Abstract translation: 本发明涉及一种图像打印设备，其可以以低成本打印图像而没有任何中途偏移或正面/反向像素偏移。 一种图像打印设备包括：时钟产生部分，其生成点时钟作为形成图像的每个像素的基础，图像打印部分，根据图像数据参照点来在主扫描方向上打印单行图像 从时钟产生部分输出的时钟，并且通过在副扫描方向上重复在主扫描方向上执行的一行图像打印来打印单页图像，以及时钟控制部分，其可变地控制点时钟频率 在主扫描方向扫描一行。

公开(公告)号：US20090052916A1

公开(公告)日：2009-02-26

申请号：US12235068

申请日：2008-09-22

Applicant: Yujiro NOMURA ,  Ken IKUMA

Inventor： Yujiro NOMURA ,  Ken IKUMA

IPC: G03G15/043

CPC classification number: H04N1/053 ,  H04N1/00525 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/04713 ,  H04N2201/04732 ,  H04N2201/04744

Abstract: As a scanning light beam which is scanning and traveling away from an effective image region moves passed the location of a sensor, a horizontal synchronizing signal Hsync is obtained as a first detection signal. A deflection mirror surface turns around, thereby reversing the direction in which the scanning light beam scans. This scanning light beam therefore scans an effective image region IR, and a latent image forming operation using this scanning light beam is controlled based on the horizontal synchronizing signal Hsync. Hence, there is a relatively long period of time (T4+T5) since the horizontal synchronizing signal Hsync is obtained until formation of a latent image starts in accordance with the signal Hsync. This secures sufficient time for control of the latent image forming operation based on the horizontal synchronizing signal Hsync, and hence, realizes the latent image forming operation as desired during the time T6.

Abstract translation: 当扫描并远离有效图像区域移动的扫描光束通过传感器的位置时，获得水平同步信号Hsync作为第一检测信号。 偏转镜面转过来，从而反转扫描光束扫描的方向。 因此，该扫描光束扫描有效图像区域IR，并且基于水平同步信号Hsync来控制使用该扫描光束的潜像形成操作。 因此，由于根据信号Hsync，直到形成潜像直到获得水平同步信号Hsync为止，所以存在相当长的时间段（T4 + T5）。 这确保了足够的时间来控制基于水平同步信号Hsync的潜像形成操作，因此，在时间T6期间，根据需要实现潜像形成操作。

公开(公告)号：US20090028196A1

公开(公告)日：2009-01-29

申请号：US12171329

申请日：2008-07-11

Applicant: Toru KIKUCHI

Inventor： Toru KIKUCHI

IPC: H01S3/10

CPC classification number: G03G15/043 ,  H04N1/0473 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/0471 ,  H04N2201/04734 ,  H04N2201/04744 ,  H04N2201/04786

Abstract: A disclosed continuous form electrophotographic apparatus for forming an output image on a photoconductor surface by scanning the photoconductor surface with a laser beam irradiated from a laser light source and outputting the output image on a continuous form, includes a laser beam position detecting unit configured to output a position signal indicating a starting position where the laser beam irradiated on the photoconductor surface starts horizontal scanning; and a control signal output unit configured to output a control signal for controlling a timing at which the laser beam starts writing image data in a vertical direction. The phase difference between the control signal output from the control signal output unit and the position signal is corrected.

Abstract translation: 一种公开的连续形式的电子照相设备，用于通过用激光源照射的激光束扫描感光体表面并在连续形式上输出输出图像，在感光体表面上形成输出图像，该激光束位置检测单元被配置为输出 指示激光束照射在感光体表面上的起始位置的位置信号开始水平扫描; 以及控制信号输出单元，被配置为输出用于控制激光束开始在垂直方向上写入图像数据的定时的控制信号。 校正从控制信号输出单元输出的控制信号与位置信号之间的相位差。

公开(公告)号：US20090015885A1

公开(公告)日：2009-01-15

申请号：US12169978

申请日：2008-07-09

Applicant: Shunsaku Kondo

Inventor： Shunsaku Kondo

IPC: H04N1/04

CPC classification number: G03G15/043 ,  G02B26/127 ,  G06K15/1219 ,  H04N1/053 ,  H04N1/1135 ,  H04N1/12 ,  H04N1/2323 ,  H04N2201/02439 ,  H04N2201/0471 ,  H04N2201/04729 ,  H04N2201/04731 ,  H04N2201/04732 ,  H04N2201/04734 ,  H04N2201/04744 ,  H04N2201/04755 ,  H04N2201/04767 ,  H04N2201/04793 ,  H04N2201/04794

Abstract: A frequency adjusting unit adjusts a frequency of the clock signal to be supplied to a drive unit when an image is to be formed on the second face in response to a contraction ratio of the printing material on which an image has been formed on the first face. The phase difference determining unit determines a phase difference between the clock signal corresponding to the first face and the clock signal corresponding to the second face in response to a frequency difference and a sign thereof between the clock signal corresponding to the first face and the clock signal corresponding to the second face. The change control unit changes from the clock signal corresponding to the first face to the clock signal corresponding to the second face.

Abstract translation: 频率调节单元响应于在其上形成有图像的打印材料的收缩比在第二面上形成图像时，调整要提供给驱动单元的时钟信号的频率 。 相位差确定单元响应于与第一面对应的时钟信号与时钟信号之间的频率差及其符号，确定与第一面对应的时钟信号与对应于第二面的时钟信号之间的相位差 对应于第二面。 改变控制单元从对应于第一面的时钟信号改变为对应于第二面的时钟信号。

公开(公告)号：US07456856B2

公开(公告)日：2008-11-25

申请号：US11355882

申请日：2006-02-17

Applicant: Yasuhiro Nihei

Inventor： Yasuhiro Nihei

IPC: B41J2/435 ,  B41J2/47

CPC classification number: H04N1/053 ,  G06K15/1219 ,  H04N1/1135 ,  H04N2201/0471 ,  H04N2201/04732 ,  H04N2201/04744 ,  H04N2201/04781 ,  H04N2201/04786

Abstract: The present invention discloses a clock signal generation circuit for generating one or more clock signals for performing a scanning operation by scanning a light beam from a light source to a scan target. The clock signal generation circuit includes a determination circuit for determining authenticity of start information in accordance with at least one of the length of the start information and the timing at which the start information is input, and a generation circuit for generating the clock signals in synchronization with the start information when the determination circuit determines that the start information is authentic.

Abstract translation: 本发明公开了一种时钟信号生成电路，用于通过将来自光源的光束扫描到扫描对象来产生用于执行扫描操作的一个或多个时钟信号。 时钟信号产生电路包括一个确定电路，用于根据开始信息的长度和开始信息被输入的定时中的至少一个来确定起始信息的真实性;以及生成电路，用于同步地产生时钟信号 当确定电路确定开始信息是可信的时，具有开始信息。