公开(公告)号：US07982424B2

公开(公告)日：2011-07-19

申请号：US12228220

申请日：2008-08-11

Applicant: Yasuhiko Yoshihisa

Inventor： Yasuhiko Yoshihisa

IPC: G05B11/42

CPC classification number: H04N1/1017 ,  H04N1/00236 ,  H04N1/0473 ,  H04N1/1026 ,  H04N1/193 ,  H04N2201/02425 ,  H04N2201/02439 ,  H04N2201/0471 ,  H04N2201/04725 ,  H04N2201/04731 ,  H04N2201/04755 ,  H04N2201/04791 ,  H04N2201/04793 ,  H04N2201/04794

Abstract: The invention provides, as an aspect thereof, an document reading apparatus that includes: a speed calculating unit that calculates a speed related to the rotation of a motor on the basis of a signal that is outputted from an encoder; and a controlling unit that calculates control amount on the basis of the speed calculated by the speed calculating unit so as to control the rotation of the motor in accordance with the calculated control amount. In the configuration of an document reading apparatus according to this aspect of the invention, the above-mentioned controlling unit controls the motor with an increase in the control amount in a case where there occurs no change in the signal that is outputted from the encoder for a certain period of time. The increase in the control amount is based on the length of time that has elapsed since the last change in the signal.

Abstract translation: 本发明的一个方面提供了一种文件读取装置，其包括：速度计算单元，其基于从编码器输出的信号计算与马达的旋转相关的速度; 以及控制单元，其基于由速度计算单元计算的速度来计算控制量，以便根据计算出的控制量来控制电动机的旋转。 在根据本发明的该方面的文件读取装置的结构中，上述控制单元在从编码器输出的信号不发生变化的情况下，随着控制量的增加而控制电动机 一段时间。 控制量的增加是基于从信号的最后一次变化起经过的时间长度的。

公开(公告)号：US07920305B2

公开(公告)日：2011-04-05

申请号：US11882691

申请日：2007-08-03

Applicant: Masaaki Ishida ,  Yasuhiro Nihei ,  Atsufumi Omori ,  Jun Tanabe

Inventor： Masaaki Ishida ,  Yasuhiro Nihei ,  Atsufumi Omori ,  Jun Tanabe

IPC: H04N1/04

CPC classification number: H04N1/40037 ,  G06K15/1219 ,  G06K15/1261 ,  H04N1/0473 ,  H04N1/1135 ,  H04N1/12 ,  H04N1/1911 ,  H04N2201/02439 ,  H04N2201/0471 ,  H04N2201/04734 ,  H04N2201/04744 ,  H04N2201/04787 ,  H04N2201/04794

Abstract: An optical scanning device of the invention includes: n-odd (n≧2) light sources disposed at different positions at least in a sub scanning direction; a light source driving control part configured to control a light emitting state of the light source; and a sub-scanning pixel position detecting part configured to depict one pixel with m-odd (n≧m≧2) light sources of the n-odd (n≧2) light sources and to detect a deviation in position of the one pixel in a sub scanning direction, wherein the light source driving control part is configured to correct the deviation in position of the one pixel in the sub scanning direction at a resolution equal to or higher than a density of the pixel, depicted with the m-odd light sources, by controlling the light emitting state of the m-odd light sources on the basis of a result of detection with the sub-scanning pixel position detecting part.

Abstract translation: 本发明的光学扫描装置包括：至少在副扫描方向上设置在不同位置的n奇（n≥2）个光源; 被配置为控制所述光源的发光状态的光源驱动控制部; 以及副扫描像素位置检测部，其被配置为描绘所述n奇数（n≥2）个光源的m奇数（n≥m≥2）个光源的一个像素，并且检测所述一个像素的位置偏差 在副扫描方向上，其中光源驱动控制部被配置为以像素的密度等于或高于像素的密度来校正副扫描方向上的一个像素的位置偏移，以m奇数 基于利用副扫描像素位置检测部分的检测结果控制m个奇数光源的发光状态。

公开(公告)号：US07830407B2

公开(公告)日：2010-11-09

申请号：US11637742

申请日：2006-12-13

Applicant: Yasuo Tamaru ,  Ryota Kato

Inventor： Yasuo Tamaru ,  Ryota Kato

IPC: B41J2/47 ,  B41J2/435

CPC classification number: G03G15/011 ,  G03G2215/0119 ,  G03G2215/0158 ,  H04N1/047 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/02439 ,  H04N2201/0471 ,  H04N2201/04732 ,  H04N2201/04744 ,  H04N2201/04767 ,  H04N2201/04793 ,  H04N2201/04794

Abstract: In an image forming apparatus, a polygon mirror, a plurality of laser generators, a first sensor, and a second sensor are disposed at a resin frame. A laser beam outputted from each of the laser generators and deflected by a deflection surface is irradiated onto a surface of a photosensitive drum to scan the surface over a scan part. The first sensor is disposed at a first position to detect a laser beam deflected by the deflection surface. The second sensor is disposed at a second position to detect a laser beam deflected by the deflection surface. A storage unit stores correspondence information indicating shift of the scan part from a reference scan part in relation to time difference between detections of the laser beam by the first and second sensor. A controller controls the laser generator to output a laser beam based on the shift of the scan part.

Abstract translation: 在图像形成装置中，在树脂框架上设置多面镜，多个激光发生器，第一传感器和第二传感器。 从每个激光发生器输出并由偏转表面偏转的激光束被照射到感光鼓的表面上以扫描扫描部分上的表面。 第一传感器设置在第一位置以检测由偏转表面偏转的激光束。 第二传感器设置在第二位置以检测由偏转表面偏转的激光束。 存储单元存储指示从第一和第二传感器相对于基准扫描部分的扫描部分的移动相对于激光束的检测之间的时间差的对应信息。 控制器控制激光发生器基于扫描部分的偏移输出激光束。

公开(公告)号：US20100189453A1

公开(公告)日：2010-07-29

申请号：US12691911

申请日：2010-01-22

Applicant: Okito Ogasahara

Inventor： Okito Ogasahara

IPC: G03G15/043

CPC classification number: H04N1/506 ,  G03G15/0435 ,  H04N1/053 ,  H04N1/1135 ,  H04N1/12 ,  H04N1/2323 ,  H04N1/233 ,  H04N1/295 ,  H04N2201/02439 ,  H04N2201/0471 ,  H04N2201/04732 ,  H04N2201/04744 ,  H04N2201/04755 ,  H04N2201/04786 ,  H04N2201/04794

Abstract: A write reference signal generating unit uses horizontal synchronization signals output from BD sensors to generate, for each laser scanning unit of respective image forming units, a main scanning write reference signal for irradiating laser light from a semiconductor laser every other predetermined number of reflective surfaces when photosensitive drums are driven to rotate at a second speed of rotation which is slower than a standard speed of rotation. A phase adjustment unit adjusts the phase of a control signal for driving a polygonal mirror, which is output to a polygon motor of each image forming unit, on the basis of a relative time difference between image write timings of the respective laser scanning units as measured by a time difference measurement unit.

Abstract translation: 写参考信号生成单元使用从BD传感器输出的水平同步信号，对于各图像形成单元的每个激光扫描单元，生成用于从半导体激光器每隔一定数量的反射面照射激光的主扫描写入基准信号， 感光鼓被驱动以比标准旋转速度慢的第二旋转速度旋转。 相位调整单元基于被测定的各激光扫描单元的图像写入定时之间的相对时间差来调整用于驱动被输出到各图像形成单元的多边形电机的多角镜的控制信号的相位 通过时差测量单元。

公开(公告)号：US20100177364A1

公开(公告)日：2010-07-15

申请号：US12684286

申请日：2010-01-08

Applicant: Takahisa YOSHIGAE

Inventor： Takahisa YOSHIGAE

IPC: H04N1/04

CPC classification number: H04N1/047 ,  H04N1/193 ,  H04N1/40056 ,  H04N2201/02439 ,  H04N2201/04768 ,  H04N2201/04794

Abstract: An image reading apparatus includes a drive unit that drives the line image sensor by frequency-modulated clock; a signal generating unit that generates an analog signal according to a change in frequency of the frequency-modulated clock; an amplification-inversion unit that amplifies the analog signal with an arbitrary amplification factor, and configured to switch between inversion and non-inversion; and a signal superimposing unit that superimposes between the analog image signal and an analog signal output from the amplification-inversion unit.

Abstract translation: 图像读取装置包括通过调频时钟驱动线路图像传感器的驱动单元; 信号发生单元，其根据调频时钟的频率变化产生模拟信号; 放大反转单元，其以任意的放大系数放大模拟信号，并且被配置为在反相和非反相之间切换; 以及信号叠加单元，其叠加在模拟图像信号和从放大反转单元输出的模拟信号之间。

公开(公告)号：US20090168133A1

公开(公告)日：2009-07-02

申请号：US12332918

申请日：2008-12-11

Applicant: Susumu Narita

Inventor： Susumu Narita

IPC: G02B26/10

CPC classification number: G02B26/123 ,  B41J2/473 ,  G02B26/126 ,  H04N1/024 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/02414 ,  H04N2201/02433 ,  H04N2201/02439 ,  H04N2201/02445 ,  H04N2201/0448 ,  H04N2201/04794

Abstract: An optical scanner provided with at least one optical path through which an optical beam emitted from a light source is directed onto a surface of an object for forming an image thereon includes a deflector configured to deflect the optical beam and a curvature adjustment unit. The curvature adjustment unit includes a reflecting mirror configured to reflect the optical beam in a predetermined direction, a holder unit configured to hold the reflecting mirror and including at least one supporter that engages the reflecting mirror, a pressure unit configured to flexibly deform the reflecting mirror in a normal direction relative to a reflecting surface of the reflecting mirror, and a fixing member fixed to at least a portion of the reflecting mirror, configured to fix a position of the holder unit relative to the reflecting mirror in a main scanning direction by contacting at least a portion of the holder unit including the supporter.

Abstract translation: 一种设置有至少一个光路的光学扫描器，从光源发射的光束通过该光路被引导到用于形成图像的物体的表面上，包括：偏转器，其被配置为偏转光束和曲率调节单元。 曲率调节单元包括被配置为沿预定方向反射光束的反射镜，被配置为保持反射镜并且包括至少一个与反射镜接合的支撑件的保持器单元，构造成使反射镜柔性变形的压力单元 在相对于反射镜的反射面的法线方向上固定有固定部件，该固定部件被固定在所述反射镜的至少一部分上，所述固定部件被配置为通过接触将所述保持器单元相对于所述反射镜的位置固定在主扫描方向 保持器单元的至少一部分包括支撑件。

公开(公告)号：US07499070B2

公开(公告)日：2009-03-03

申请号：US10831301

申请日：2004-04-26

Applicant: Yasuyuki Horie ,  Toru Kikuchi

Inventor： Yasuyuki Horie ,  Toru Kikuchi

IPC: B41J2/435 ,  B41J2/47

CPC classification number: G02B26/127 ,  G02B26/123 ,  H04N1/053 ,  H04N1/1135 ,  H04N1/12 ,  H04N1/1911 ,  H04N2201/02439 ,  H04N2201/0471 ,  H04N2201/04732 ,  H04N2201/04744 ,  H04N2201/04786 ,  H04N2201/04794

Abstract: A method of diagnosing a state of a horizontal synchronizing signal is provided for an optical scanner, which includes a rotary polygon mirror having a rotation sensor, a control clock competing with a signal of the rotation sensor to control the rotary polygon mirror to a constant speed, a laser beam illuminating the rotary polygon mirror to be used in a scanning operation, and a scanning beam detector detecting the laser scanning beam at a prescribed position and outputting a horizontal synchronizing signal to trigger a control of the scanner. The method includes using the optical scanner, and presetting an effective period of outputting the horizontal synchronizing signal by counting the control clock for the rotary polygon mirror, the counting being triggered by a previous horizontal synchronizing signal.

Abstract translation: 提供了一种用于诊断水平同步信号的状态的方法，用于光学扫描器，其包括具有旋转传感器的旋转多面镜，与旋转传感器的信号竞争的控制时钟，以将旋转多面镜控制到恒定速度 照射用于扫描操作的旋转多面镜的激光束和扫描光束检测器，其在预定位置检测激光扫描光束，并输出水平同步信号以触发扫描仪的控制。 该方法包括使用光学扫描器，并且通过对旋转多面镜的控制时钟进行计数来预设输出水平同步信号的有效时段，计数由先前的水平同步信号触发。

公开(公告)号：US20090009582A1

公开(公告)日：2009-01-08

申请号：US12230716

申请日：2008-09-04

Applicant: Mitsuo Shiraishi

Inventor： Mitsuo Shiraishi

IPC: B41J2/435

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, and comprises an auxiliary clock calculating portion for calculating an auxiliary clock period based on a reference clock period and a modulation coefficient, and an image clock generating portion for generating 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 said image bearing body based on the initial period value set in advance and said auxiliary clock period, and said image clock generating means perform a frequency modulation so that the frequency of said 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由激光束扫描的图像承载体的图像形成装置，并且包括：辅助时钟计算部分，用于基于参考时钟周期和调制系数计算辅助时钟周期;以及 图像时钟产生部分，用于基于初始周期值，生成图像时钟，其中至少在一个部分中的频率不同，并且主扫描线上的图像区域的其他部分被激光束扫描在所述图像承载体上 所述图像时钟发生装置执行频率调制，使得所述图像时钟的频率在预定的波动内变化。

公开(公告)号：US07433074B2

公开(公告)日：2008-10-07

申请号：US10815306

申请日：2004-04-01

Applicant: Shin-ichi Takata

Inventor： Shin-ichi Takata

IPC: H04N1/40

CPC classification number: H04N1/053 ,  G02B26/127 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/02439 ,  H04N2201/0471 ,  H04N2201/04732 ,  H04N2201/04744 ,  H04N2201/04748 ,  H04N2201/04767 ,  H04N2201/04794

Abstract: An image forming apparatus that is capable of scanning at a proper speed at all positions on a main scan line without being affected by variations in the characteristics of a f-θ lens, variations in the laser beam wavelength, irregularities in the rotational speed of a polygon mirror and fluctuations in the characteristics of the f-θ lens due to changes in ambient temperature. An image clock signal for exposure control is generated for each of a plurality of segments obtained by dividing a main scan line on a photosensitive drum scanned by a laser beam, based on a modulation coefficient. The modulation coefficient is corrected based on the detected phase difference between detection timing of the terminating end of the main scan line and generation timing of the last image clock signal for the last segment.

Abstract translation: 一种图像形成装置，其能够在主扫描线上的所有位置以适当的速度扫描，而不受f-θ透镜的特性变化的影响，激光束波长的变化， 多角镜和由于环境温度变化引起的f-theta透镜特性的波动。 基于调制系数，通过对由激光束扫描的感光鼓上的主扫描线进行分割而获得的多个片段中的每一个产生用于曝光控制的图像时钟信号。 基于检测到的主扫描线的终端的检测定时与最后一段的最后的图像时钟信号的产生定时之间的相位差来校正调制系数。

公开(公告)号：US07400338B2

公开(公告)日：2008-07-15

申请号：US11224937

申请日：2005-09-14

Applicant: Hidetoshi Yano

Inventor： Hidetoshi Yano

IPC: B41J15/14 ,  B41J27/00

CPC classification number: H04N1/00015 ,  G02B26/122 ,  H04N1/00034 ,  H04N1/00037 ,  H04N1/00082 ,  H04N1/053 ,  H04N1/1135 ,  H04N2201/02439 ,  H04N2201/04755 ,  H04N2201/04794

Abstract: An image forming apparatus including: an optical scanning unit for deflecting and scanning a light on a photosensitive body, the optical scanning unit having: a light source for emitting the light; a deflection section that deflects the emitted light; a driving section that drives the deflection section; and a temperature detecting section that detects the temperature of the driving section or the temperature in vicinity of the driving section; a developing section that develops an electrostatic latent image by depositing a developer on the electrostatic latent image formed on a surface of the photosensitive body by the optical scanning unit; a transfer section that transfers the developer deposited on the surface of the photosensitive body to a recording medium; and a controller for changing a drive speed of the driving section based on the temperature detected by the temperature detecting section.

Abstract translation: 一种图像形成装置，包括：用于偏转和扫描感光体上的光的光学扫描单元，所述光学扫描单元具有：用于发射光的光源; 使发射的光偏转的偏转部; 驱动偏转部的驱动部; 以及温度检测部，其检测所述驱动部的温度或所述驱动部附近的温度; 显影部分，其通过在由光学扫描单元在感光体的表面上形成的静电潜像上沉积显影剂来显影静电潜像; 转印部分，其将沉积在感光体表面上的显影剂转印到记录介质上; 以及控制器，用于基于由温度检测部检测到的温度来改变驱动部的驱动速度。