公开(公告)号：US07436424B2

公开(公告)日：2008-10-14

申请号：US11092888

申请日：2005-03-29

申请人： Kenichi Komiya ,  Koji Tanimoto ,  Daisuke Ishikawa ,  Yuji Inagawa

发明人： Kenichi Komiya ,  Koji Tanimoto ,  Daisuke Ishikawa ,  Yuji Inagawa

IPC分类号： B41J2/47

CPC分类号： G02B26/122 ,  G02B26/127 ,  G06K15/1204 ,  G06K15/1209 ,  H04N1/053 ,  H04N1/1135 ,  H04N2201/02443 ,  H04N2201/0471 ,  H04N2201/04732 ,  H04N2201/04744 ,  H04N2201/04767 ,  H04N2201/04798

摘要： An image forming apparatus includes a light generator (e.g., laser) generating a scanning light beam and a driver driving the light generator depending on a drive signal to be provided. In this apparatus, data formed of image information at each pixel of each line along a main scan direction of an image to be targeted are distributed into a plurality of strings (i.e., channels) of data (e.g., two strings). Concerning each pixel provided by data in each string, information indicative of both a start and an end of modulation (e.g., PWM) is then produced. By using the start and end information, a modulator performs modulation depending on the data of each pixel in each string, providing a modulated signal. The modulated signals from the plural strings are mutually synthesized at synchronizes timings, being provided as the drive signal and given to the driver.

摘要翻译： 图像形成装置包括根据要提供的驱动信号产生扫描光束的光发生器（例如激光器）和驱动光发生器的驱动器。 在该装置中，沿着要对象的图像的主扫描方向的每行的每个像素处的图像信息形成的数据被分配到多个数据串（例如，两个串）中。 关于每个串中由数据提供的每个像素，随后产生指示调制的开始和结束（例如PWM）的信息。 通过使用开始和结束信息，调制器根据每个串中每个像素的数据执行调制，从而提供调制信号。 来自多个串的调制信号在同步定时被相互合成，作为驱动信号提供给驱动器。

公开(公告)号：US07408567B2

公开(公告)日：2008-08-05

申请号：US11091933

申请日：2005-03-29

申请人： Daisuke Ishikawa ,  Koji Tanimoto ,  Kenichi Komiya ,  Yuji Inagawa

发明人： Daisuke Ishikawa ,  Koji Tanimoto ,  Kenichi Komiya ,  Yuji Inagawa

IPC分类号： B41J2/435

CPC分类号： B41J2/471

摘要： An image forming apparatus is provided with a modulator producing a modulated signal of a pulse width decided on given image data and a driver driving an optical generator such as laser to generate a light beam. The image forming apparatus is further provided with a scanner periodically scanning the light beam generated by the optical generator and a power detector detecting information indicative of a power of the light beam scanned by the scanner. A pulse width adjustor uses the information detected by the power detector, in order to adjust the pulse width of the light beam.

摘要翻译： 图像形成装置具有调制器，其产生在给定图像数据上决定的脉冲宽度的调制信号，以及驱动器驱动诸如激光器的光学发生器的驱动器以产生光束。 图像形成装置还设置有周期性扫描由光学发生器产生的光束的扫描仪和检测由扫描仪扫描的光束的功率的信号的功率检测器。 脉冲宽度调节器使用由功率检测器检测的信息，以便调节光束的脉冲宽度。

公开(公告)号：US20080018727A1

公开(公告)日：2008-01-24

申请号：US11491737

申请日：2006-07-24

申请人： Daisuke Ishikawa ,  Koji Tanimoto ,  Kenichi Komiya

发明人： Daisuke Ishikawa ,  Koji Tanimoto ,  Kenichi Komiya

IPC分类号： B41J2/435

CPC分类号： B41J2/471 ,  G06K15/1247

摘要： In the optical beams scanning apparatus and an image forming apparatus having this optical beam scanning apparatus according to this invention, a light emitting unit emits plural laser beams set at a predetermined output in advance, and a scanning unit deflects the emitted plural laser beams and scans with them. A laser beam output setting unit arranges the light emitting unit so that scanning positions of the plural laser beams are arrayed in time series in a main scanning direction on the same line, and sets the output of laser beams cast onto a photoconductor by using the plural laser beams. A writing unit writes an image to the photoconductor with the preset output of the laser beams cast onto the photoconductor, using the plural laser beams used for scanning. With the optical beam scanning apparatus and the image forming apparatus having this optical beam scanning apparatus according to this invention, the output of laser beams cast onto a photoconductive drum can be controlled at a high speed.

摘要翻译： 在根据本发明的光束扫描装置和具有该光束扫描装置的图像形成装置中，发光单元预先发射设置在预定输出端的多个激光束，并且扫描单元使发射的多个激光束偏转并扫描 跟他们。 激光束输出设定单元配置发光单元，使得多个激光束的扫描位置在同一行上的主扫描方向上以时间序列排列，并且通过使用多个激光束将激光束的输出设置在光电导体上 激光束。 写入单元使用用于扫描的多个激光束，使用投射到光电导体上的激光束的预设输出将图像写入光电导体。 利用具有根据本发明的光束扫描装置的光束扫描装置和图像形成装置，可以高速地控制投射到感光鼓上的激光束的输出。

公开(公告)号：US20070216757A1

公开(公告)日：2007-09-20

申请号：US11375920

申请日：2006-03-14

申请人： Daisuke Ishikawa ,  Koji Tanimoto ,  Kenichi Komiya ,  Yuji Inagawa

发明人： Daisuke Ishikawa ,  Koji Tanimoto ,  Kenichi Komiya ,  Yuji Inagawa

IPC分类号： B41J2/435

CPC分类号： H04N1/295 ,  G06K15/1214 ,  H04N1/2346 ,  H04N1/40006

摘要： A laser beam scanning apparatus according to the invention includes: a laser oscillating unit that outputs a laser beam; a laser beam scanning unit that performs scanning in a main scanning direction with a laser beam and irradiates the laser beam on a photosensitive member via an optical lens; an error signal generating unit that monitors, in a predetermined period, intensity of a laser beam outputted from the laser oscillating unit and generates an error signal of an error between output intensity of the laser oscillating unit and a predetermined output reference value; a correction signal generating unit that generates a correction signal for correcting output intensity of a laser beam according to a change in optical efficiency in the main scanning direction such that intensity of the laser beam in the main scanning direction on the photosensitive member is constant; and a laser control signal generating unit that holds, during the image formation period, a reference signal generated on the basis of the error signal and applies the correction signal to the reference signal to generate a laser control signal for determining intensity of a laser beam outputted from the laser oscillating unit. The correction signal generated by the correction signal generating unit is a correction signal for correcting sensitivity of the photosensitive member including a change in the sensitivity with time and is a correction signal for further applying correction corresponding to a change in optical efficiency in the main scanning direction to output intensity of a laser beam with the change in the sensitivity with time corrected.

摘要翻译： 根据本发明的激光束扫描装置包括：激光振荡单元，其输出激光束; 激光束扫描单元，其利用激光束在主扫描方向上进行扫描，并且经由光学透镜将激光束照射在感光构件上; 误差信号发生单元，在预定周期中监视从激光振荡单元输出的激光束的强度，并产生激光振荡单元的输出强度与预定输出参考值之间的误差的误差信号; 校正信号产生单元，其根据主扫描方向上的光效率的变化产生用于校正激光束的输出强度的校正信号，使得激光束在感光构件上的主扫描方向上的强度恒定; 以及激光控制信号生成单元，其在图像形成期间保持基于所述误差信号生成的基准信号，并将所述校正信号施加到所述参考信号，以生成用于确定输出的激光束的强度的激光控制信号 来自激光振荡单元。 由校正信号产生单元产生的校正信号是用于校正包括灵敏度随时间变化的感光构件的灵敏度的校正信号，并且是用于进一步应用与主扫描方向上的光效率的变化相对应的校正的校正信号 以随着时间校正随着灵敏度的变化而输出激光束的强度。

公开(公告)号：US20070216756A1

公开(公告)日：2007-09-20

申请号：US11376776

申请日：2006-03-15

申请人： Kenichi Komiya ,  Koji Tanimoto ,  Daisuke Ishikawa ,  Yuji Inagawa

发明人： Kenichi Komiya ,  Koji Tanimoto ,  Daisuke Ishikawa ,  Yuji Inagawa

IPC分类号： B41J2/435

CPC分类号： G06K15/1219

摘要： A laser beam scanning apparatus includes: a laser oscillating unit that outputs a laser beam; a laser beam scanning unit that scans and irradiates the laser beam in a main scanning direction on a photosensitive member; an error signal generating unit that monitors intensity of a laser beam and generates an error signal between output intensity of the laser oscillating unit and a reference value; a correction signal generating unit that generates a correction signal for correcting intensity of a laser beam along the main scanning direction to be constant; a correction signal converting unit that converts a correction signal into an adapted correction signal by attenuating the correction signal; and a laser control signal generating unit that holds, during the image formation period, a reference signal generated on the basis of the error signal and applies the adapted correction signal to the reference signal to generate a laser control signal for determining intensity of a laser beam outputted from the laser oscillating unit.

摘要翻译： 激光束扫描装置包括：激光振荡单元，其输出激光束; 激光束扫描单元，其在感光构件上沿主扫描方向扫描和照射激光束; 误差信号发生单元，其监视激光束的强度并在激光振荡单元的输出强度与参考值之间产生误差信号; 校正信号生成单元，其生成用于校正激光束沿着主扫描方向的强度为一定的校正信号; 校正信号转换单元，通过衰减校正信号将校正信号转换成适配的校正信号; 以及激光控制信号生成单元，其在图像形成期间保持基于误差信号生成的参考信号，并将适应的校正信号施加到所述参考信号，以生成用于确定激光束强度的激光控制信号 从激光振荡单元输出。

公开(公告)号：US07158163B2

公开(公告)日：2007-01-02

申请号：US10805531

申请日：2004-03-22

申请人： Kenichi Komiya ,  Koji Tanimoto ,  Daisuke Ishikawa ,  Yuji Inagawa

发明人： Kenichi Komiya ,  Koji Tanimoto ,  Daisuke Ishikawa ,  Yuji Inagawa

IPC分类号： B41J2/435

CPC分类号： B41J2/471

摘要： A light beam scanning apparatus according to an embodiment of this invention includes a reflection unit for reflecting a light beam, a rotation unit for rotating the reflection unit, a rotation control unit for controlling rotation of the rotation unit, a rotational speed detection unit for detecting a rotational speed of the rotation unit, a light amount control unit for, before the rotational speed detection unit detects that the rotational speed has reached a predetermined rotational speed, controlling light emission of the light beam and controlling the light amount of the light beam to a predetermined value, and a light emission control unit for, after the rotational speed detection unit detects that the rotational speed has reached the predetermined rotational speed, controlling a light emission timing of the light beam.

摘要翻译： 根据本发明实施例的光束扫描装置包括用于反射光束的反射单元，用于旋转反射单元的旋转单元，用于控制旋转单元的旋转的旋转控制单元，用于检测旋转单元的旋转速度检测单元 旋转单元的旋转速度，用于在转速检测单元检测到转速已经达到预定旋转速度之前的光量控制单元，控制光束的发光并将光束的光量控制为 以及发光控制单元，用于在转速检测单元检测到转速已经达到预定转速之后，控制光束的发光定时。

公开(公告)号：US07030900B2

公开(公告)日：2006-04-18

申请号：US10617029

申请日：2003-07-11

申请人： Kenichi Komiya ,  Koji Tanimoto ,  Daisuke Ishikawa

发明人： Kenichi Komiya ,  Koji Tanimoto ,  Daisuke Ishikawa

IPC分类号： B41J2/47

CPC分类号： H04N1/0473 ,  G06K15/1204 ,  H04N1/1013 ,  H04N1/192 ,  H04N2201/04782 ,  H04N2201/04786

摘要： A method and apparatus for scanning a common scan line in a main scanning direction with a light emitting device is provided. The method and apparatus preferably generates at least a first control signal and a second control signal for driving the light emitting device, the first control signal and the second control signal being generated from image data for the common scan line in the main scanning direction, drives the light emitting device with the first control signal to scan the common scan line in the main scanning direction, and drives the light emitting device with the second control signal to scan the common scan line in the main scanning direction.

摘要翻译： 提供一种用于利用发光器件扫描主扫描方向的公共扫描线的方法和装置。 所述方法和装置优选地至少产生用于驱动发光装置的第一控制信号和第二控制信号，所述第一控制信号和第二控制信号是从主扫描方向上的共扫描线的图像数据产生的，驱动 具有第一控制信号的发光器件沿主扫描方向扫描公共扫描线，并且利用第二控制信号驱动发光器件以沿主扫描方向扫描公共扫描线。

公开(公告)号：US07022977B2

公开(公告)日：2006-04-04

申请号：US10457504

申请日：2003-06-10

申请人： Daisuke Ishikawa ,  Koji Tanimoto ,  Kenichi Komiya ,  Koji Kawai

发明人： Daisuke Ishikawa ,  Koji Tanimoto ,  Kenichi Komiya ,  Koji Kawai

IPC分类号： B41J2/435 ,  G02B26/10

CPC分类号： H04N1/113

摘要： A main control section controls a movable beam a such that a passage position thereof may come to a center of a gap between a sensor SK and a sensor SJ, and measures an output difference between a sensor SP and a sensor SO. In this case, the main control section successively measures an output difference between the sensors SP and SO while moving the movable beam a to the center of the gap between the sensors SK and SJ. Similarly, the main control section controls the movable beam a such that the passage position thereof may come to a center of a gap between the sensor SJ and a sensor SI.

公开(公告)号：US06885480B2

公开(公告)日：2005-04-26

申请号：US10929399

申请日：2004-08-31

申请人： Kenichi Komiya ,  Koji Tanimoto ,  Daisuke Ishikawa

发明人： Kenichi Komiya ,  Koji Tanimoto ,  Daisuke Ishikawa

IPC分类号： H04N1/053 ,  H04N1/113 ,  H04N1/12 ,  H04N1/04

CPC分类号： H04N1/053 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/04712 ,  H04N2201/04732 ,  H04N2201/04744 ,  H04N2201/04782 ,  H04N2201/04793

摘要： A synchronizing circuit and a timing adjusting circuit set a position of an exposure area by beam scanning as an additional value of a first setting value set in dot unit corresponding to the scanning of a pixel clock period and a second setting value set in tap unit corresponding to the scanning of a period smaller than the pixel clock period. A CPU controls the synchronizing circuit and the timing adjusting circuit so that the exposed position becomes an objective position. The CPU changes the second setting value to a first predetermined value by increasing the first setting value by one dot, in the case that the additional value is increased to reach a first threshold. Further, the CPU changes the second setting value to a second predetermined value by decreasing the first setting value by one dot, in the case that the additional value of the synchronizing circuit and the timing adjusting circuit in which the first setting value is increased by one dot is decreased to reach a second threshold smaller than the first threshold.

摘要翻译： 同步电路和定时调整电路通过光束扫描设置曝光区域的位置，作为对应于像素时钟周期的扫描设置的点单位的第一设定值的附加值和对应于抽头单元对应的第二设定值 到比像素时钟周期小的扫描。 CPU控制同步电路和定时调整电路，使得曝光位置成为目标位置。 在增加附加值以达到第一阈值的情况下，CPU通过将第一设定值增加一个点来将第二设定值改变为第一预定值。 此外，在将第一设定值增加1的同步电路和定时调整电路的附加值的情况下，CPU将第一设定值减小一点，CPU将第二设定值变更为第二规定值 点减小以达到小于第一阈值的第二阈值。

公开(公告)号：US08134586B2

公开(公告)日：2012-03-13

申请号：US11239097

申请日：2005-09-30

申请人： Kenichi Komiya ,  Koji Tanimoto ,  Daisuke Ishikawa

发明人： Kenichi Komiya ,  Koji Tanimoto ,  Daisuke Ishikawa

IPC分类号： B41J2/435

CPC分类号： H04N1/1135 ,  H04N2201/0471 ,  H04N2201/04729 ,  H04N2201/04732 ,  H04N2201/04744

摘要： A beam light scanning apparatus capable of reducing influences of variations in characteristics of circuits disposed in a signal path extending until a laser driver and speeding up image data transfer for scan and exposure. Data of each line is distributed by an image data I/F into data trains of two channels, i.e., an odd-numbered pixel train and an even-numbered pixel train. The data in the two-channel trains are written by writing units into a plurality of memories in parallel for each of the trains in response to a line sync signal. During the same processing cycle as that for the writing, the data are read out of the memories in parallel by reading units. The data of two channels are combined by a multiplexer into a data train in the original order of pixels in each line, and a driving signal based on the combined data is generated by a PWM. A laser is driven by the driving signal.

摘要翻译： 一种能够减少设置在延伸到激光驱动器的信号路径中的电路的特性变化的影响并且加速图像数据传输以用于扫描和曝光的光束扫描装置。 每行的数据由图像数据I / F分配到两个通道的数据串中，即奇数像素列和偶数列列。 响应于行同步信号，双通道列车中的数据由写入单元写入并行的多个存储器中。 在与写入相同的处理周期中，通过读取单元并行地从存储器中读出数据。 通过多路复用器将两个通道的数据以每行中的原始像素顺序组合成数据序列，并且通过PWM产生基于组合数据的驱动信号。 激光由驱动信号驱动。