公开(公告)号：US20060227207A1

公开(公告)日：2006-10-12

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 comprises 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：US20060203262A1

公开(公告)日：2006-09-14

申请号：US11237902

申请日：2005-09-29

申请人： Daisuke Ishikawa ,  Koji Tanimoto ,  Kenichi Komiya

发明人： Daisuke Ishikawa ,  Koji Tanimoto ,  Kenichi Komiya

IPC分类号： G06K15/12

CPC分类号： H04N1/0473 ,  H04N1/06 ,  H04N1/1135 ,  H04N2201/04712 ,  H04N2201/04729 ,  H04N2201/04732 ,  H04N2201/04744 ,  H04N2201/04767 ,  H04N2201/04789

摘要： A beam light scanning apparatus capable of always stably maintaining the operations of writing and reading data of each line in a normal state while suppressing an increase of the parts cost. The beam light scanning apparatus includes a laser for emitting a beam light for scan. The apparatus further includes a memory allowing writing and reading of data based on image information per pixel read from a target image, units for writing, into the memory, the data of the target image in each line in a direction of main scan in response to a line sync signal, and units for reading the data out of the memory during the same processing cycle corresponding to the line sync signal after a delay of a predetermined time from writing of the data. A control unit converts the read data to a PWM modulated signal in accordance with the data and applies the PWM modulated signal as a driving signal to the laser.

摘要翻译： 一种光束扫描装置，其能够在抑制部件成本增加的同时，始终将各行的写入和读取数据的操作保持在正常状态。 射束光扫描装置包括用于发射用于扫描的光束的激光。 该装置还包括：存储器，用于根据从目标图像读取的每像素的图像信息写入和读取数据，所述单元用于向存储器写入在主扫描方向上的每行中的目标图像的数据，以响应于 线同步信号，以及用于在与写入数据之间的预定时间延迟之后的对应于行同步信号的相同处理周期期间将数据读出存储器的单元。 控制单元根据数据将读取的数据转换为PWM调制信号，并将PWM调制信号作为驱动信号施加到激光器。

公开(公告)号：US20060203077A1

公开(公告)日：2006-09-14

申请号：US11239098

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： B41J2/471

摘要： A beam light scanning apparatus capable of speeding up transfer of image data used for scan with a beam light while suppressing an increase of the parts cost. The beam light scanning apparatus includes a laser oscillator for emitting a beam light for scan, and a unit for processing and supplying image data of a target image in each line in a direction of main scan in response to a sync signal. The apparatus further includes a unit for acquiring the supplied image data after a certain time from generation of the sync signal, and a unit for controlling operation of the laser oscillator by a driving signal which is generated based on the acquired image data.

公开(公告)号：US06836279B2

公开(公告)日：2004-12-28

申请号：US10445842

申请日：2003-05-28

申请人： Kenichi Komiya ,  Koji Tanimoto ,  Daisuke Ishikawa

发明人： Kenichi Komiya ,  Koji Tanimoto ,  Daisuke Ishikawa

IPC分类号： G03G2114

CPC分类号： G02B26/127

摘要： The sensors SP and SO detect a position in the sub-scanning direction through which a light beam scanned by the scanning unit passes. The correction pulse generator corrects the amplitude of the position signal obtained by the sensors SP and SO. The integrator integrates the position signal corrected by the correction pulse generator, and outputs the integration value corresponding to the sub-scanning direction position. The CPU 51 adjusts the correction amount of the correcting unit (the amplitude of the pulse) such that the integration value output from the integrator falls within a target range. The target range is varied in accordance with the light beam position that changes due to an influence caused by a change in the surrounding temperature or the like.

摘要翻译： 传感器SP和SO检测由扫描单元扫描的光束经过的副扫描方向的位置。 校正脉冲发生器校正由传感器SP和SO获得的位置信号的幅度。 积分器对由校正脉冲发生器校正的位置信号进行积分，并输出与副扫描方向位置对应的积分值。 CPU51调整校正单元的校正量（脉冲的幅度），使得从积分器输出的积分值落在目标范围内。 目标范围根据由于周围温度等的变化引起的影响而变化的光束位置而变化。

公开(公告)号：US06791722B1

公开(公告)日：2004-09-14

申请号：US10446105

申请日：2003-05-28

申请人： Kenichi Komiya ,  Koji Tanimoto ,  Daisuke Ishikawa

发明人： Kenichi Komiya ,  Koji Tanimoto ,  Daisuke Ishikawa

IPC分类号： H04N104

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通过将第一设定值减小一点来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：US06710793B1

公开(公告)日：2004-03-23

申请号：US10305165

申请日：2002-11-27

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

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

IPC分类号： B41J2435

CPC分类号： H04N1/047 ,  G02B26/123 ,  G02B26/127 ,  H04N1/1135 ,  H04N1/12 ,  H04N1/1911 ,  H04N2201/02439 ,  H04N2201/04712 ,  H04N2201/04729 ,  H04N2201/04731 ,  H04N2201/04732 ,  H04N2201/04744 ,  H04N2201/04762 ,  H04N2201/04781 ,  H04N2201/04789 ,  H04N2201/04791 ,  H04N2201/04794

摘要： In an image forming apparatus such as a digital copying machine using a multi-beam optical system, a printing area can be set in the unit equal to or smaller than a clock for image formation by use of a delay pulse for each light beam and the exposure position in the light beam scanning direction (main scanning direction) is always precisely controlled by selecting an optimum set value while the actual light beam position is being checked by use of a sensor.

摘要翻译： 在诸如使用多光束光学系统的数字复印机的图像形成装置中，可以通过使用每个光束的延迟脉冲将打印区域设置为等于或小于用于图像形成的时钟的单位，并且 在通过使用传感器检查实际光束位置的同时通过选择最佳设定值来始终精确地控制光束扫描方向（主扫描方向）上的曝光位置。

公开(公告)号：US06661444B2

公开(公告)日：2003-12-09

申请号：US10134488

申请日：2002-04-30

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

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

IPC分类号： B41J2435

CPC分类号： G06K15/1219 ,  B41J2/473

摘要： A light beam scanning apparatus controls a scan position for a light beam with a first light volume so that output from a sensor is adjusted to a target value. Further, the light beam scanning apparatus controls a scan position for the light beam with a second light volume so that output from the sensor is adjusted to the target value.

公开(公告)号：US06611279B2

公开(公告)日：2003-08-26

申请号：US09966096

申请日：2001-10-01

申请人： Kenichi Komiya ,  Koji Tanimoto ,  Daisuke Ishikawa

发明人： Kenichi Komiya ,  Koji Tanimoto ,  Daisuke Ishikawa

IPC分类号： B41J2435

CPC分类号： H04N1/0473 ,  G02B26/127 ,  G06K15/1219

摘要： The sensor for converting a light beam into an electric signal is formed by a pair of symmetrical saw-toothed patterns with a narrowed width for marginally located teeth. The patterns are arranged interdigitally on the surface to be scanned or at a position equivalent to the surface. The difference of the output signals from the patterns is integrated to determine the scanning position of the light beam.

摘要翻译： 用于将光束转换成电信号的传感器由一对具有窄的宽度的对称锯齿形图案形成，用于稍微定位的齿。 这些图形被指定在待扫描的表面上或与表面等同的位置。 集成了来自图案的输出信号的差异，以确定光束的扫描位置。

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。

公开(公告)号：US20080273076A1

公开(公告)日：2008-11-06

申请号：US12172667

申请日：2008-07-14

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： 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。