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    Printer head driving apparatus improving printing speed
    2.
    发明授权
    Printer head driving apparatus improving printing speed 失效
    打印头驱动装置提高打印速度

    公开(公告)号：US5581296A

    公开(公告)日：1996-12-03

    申请号：US170069

    申请日：1993-12-17

    申请人： Koji Tanimoto ,  Kunihiko Miura ,  Naoaki Ide

    发明人： Koji Tanimoto ,  Kunihiko Miura ,  Naoaki Ide

    IPC分类号： B41J2/44 ,  B41J2/45 ,  B41J2/455 ,  H04N1/036 ,  B41J2/47 ,  B41J2/435

    CPC分类号： G06K15/1247 ,  B41J2/45

    摘要： In a printer head constituted by a large number of linearly arranged LEDs, a lighting time designator receives image data at a period corresponding to one scanning period, designates a lighting time of each LED within one scanning period in accordance with image data corresponding to each LED and the lighting capacity of each LED, and outputs lighting time data. A lighting mode designator determines a lighting mode for designating a timing, within one scanning period, at which each LED is caused to emit light, on the basis of image data, and outputs lighting mode designation data. A light timing controller divides one scanning period into a plurality of time intervals and supplies the lighting time data to the printer head a plurality of number of times within one scanning period at the time intervals on the basis of the lighting mode designation data, thereby selectively causing the respective LEDs to emit light.

    摘要翻译： 在由多个线性排列的LED构成的打印机头中，照明时间指示器以对应于一个扫描周期的周期接收图像数据，根据与每个LED对应的图像数据在一个扫描周期内指定每个LED的点亮时间 和每个LED的照明容量，并输出点亮时间数据。 照明模式指示符基于图像数据确定用于指定使每个LED发光的一个扫描周期内的定时的点亮模式，并输出点亮模式指定数据。 光定时控制器将一个扫描周期分成多个时间间隔，并且基于点亮模式指定数据，以一定时间间隔在一个扫描周期内将点亮时间数据提供给打印头多次，从而选择性地 使各LED发光。

    Light beam scanning apparatus for use with image forming apparatus
    3.
    发明授权
    Light beam scanning apparatus for use with image forming apparatus 失效
    用于图像形成装置的光束扫描装置

    公开(公告)号：US06243123B1

    公开(公告)日：2001-06-05

    申请号：US08919274

    申请日：1997-08-28

    申请人： Koji Tanimoto ,  Kenichi Komiya ,  Kunihiko Miura ,  Naoaki Ide ,  Jun Sakakibara

    发明人： Koji Tanimoto ,  Kenichi Komiya ,  Kunihiko Miura ,  Naoaki Ide ,  Jun Sakakibara

    IPC分类号： B41J247

    CPC分类号： H04N1/0473 ,  H04N1/1135 ,  H04N1/1911 ,  H04N2201/02439 ,  H04N2201/04712 ,  H04N2201/04734 ,  H04N2201/04744 ,  H04N2201/04762 ,  H04N2201/04794

    摘要： In a digital copying machine using a multi-beam optical system, a light beam position detector situated on a line extended from the surface of a photosensitive drum detects the passing position of each light beam scanned by a polygon mirror rotated by a polygon motor. A CPU calculates control amounts for galvanomirrors by using a beam position detector output processor, on the basis of the detection result of the beam position detector. Based on the calculated control amounts, galvanomirror drive circuits drive the galvanomirrors, thereby to control the positions of the beams in a sub-scan direction. The passing positions of the beams can be precisely detected with no special precision in assembling the optical system. In addition, the positions of the beams in the sub-scan direction can be controlled at predetermined positions, even if some change occurs in the structure of the optical system due to a variation in ambience or a variation with the passing of time.

    摘要翻译： 在使用多光束光学系统的数字复印机中，位于从感光鼓表面延伸的线上的光束位置检测器检测由多面镜马达旋转的多面镜扫描的每个光束的通过位置。 CPU根据光束位置检测器的检测结果，通过使用光束位置检测器输出处理器来计算电流计镜的控制量。 基于计算出的控制量，电流镜驱动电路驱动电流镜，从而控制光束在副扫描方向上的位置。 在组装光学系统时，可以精确地检测光束的通过位置，没有特别的精度。 此外，即使由于环境变化或随着时间的流逝的变化，光学系统的结构发生一些变化，也可以将子扫描方向上的光束的位置控制在预定位置。

    Image forming apparatus and image forming method
    9.
    发明授权
    Image forming apparatus and image forming method 失效
    图像形成装置及图像形成方法

    公开(公告)号：US06392684B1

    公开(公告)日：2002-05-21

    申请号：US09606744

    申请日：2000-06-29

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

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

    IPC分类号： B41J247

    CPC分类号： B41J2/473 ,  G02B26/123

    摘要： There is provided an image forming apparatus which can implement digital control of a laser beam scan (analog amount) that moves at high speed, without using any high-speed, multi-bit A/D converter. Upon executing a digital process on the basis of analog detection value Vo corresponding to the passage position or light beam power of a light beam with which a photosensitive drum is irradiated, comparator CMP0, comparison reference value (threshold value) Vr of which changes in correspondence with detection value (integration output) Vo, is used. New comparison reference value Vr is supplied to comparator CMP0 on the basis of digital data BMDA corresponding to output CMPOUT of this comparator.

    摘要翻译： 提供了一种图像形成装置，其可以实现高速移动的激光束扫描（模拟量）的数字控制，而不使用任何高速，多位A / D转换器。 在基于与照射感光鼓的光束的通过位置或光束功率相对应的模拟检测值Vo执行数字处理时，比较器CMP0，其对应的比较基准值（阈值）Vr变化 具有检测值（积分输出）Vo。 基于对应于该比较器的输出CMPOUT的数字数据BMDA，将新的比较参考值Vr提供给比较器CMP0。

    Light beam scanning, image forming apparatus, and method of adjusting the image forming apparatus
    10.
    发明授权
    Light beam scanning, image forming apparatus, and method of adjusting the image forming apparatus 失效
    光束扫描，图像形成装置以及调整图像形成装置的方法

    公开(公告)号：US06188424B1

    公开(公告)日：2001-02-13

    申请号：US09235398

    申请日：1999-01-22

    申请人： Kenichi Komiya ,  Koji Tanimoto ,  Naoaki Ide ,  Jun Sakakibara

    发明人： Kenichi Komiya ,  Koji Tanimoto ,  Naoaki Ide ,  Jun Sakakibara

    IPC分类号： B41J247

    CPC分类号： G02B26/123 ,  B41J2/473

    摘要： A light beam is made to scan and expose a photosensitive drum in the main scanning direction and the passing position of the light beam in the sub-scanning direction is sensed. On the basis of the result of the sensing, the light beam is shifted in the sub-scanning direction when the beam is made to scan by a scanner so that the passing position may come in a target range, which brings the passing position to the proper position. After the position control, the passing position of the light beam is confirmed and controlled so that the passing position may fall on the proper position a specific number of times consecutively. When the light beam is shifted in the sub-scanning direction, the passing position of the light beam is brought into a final target range in such a manner that the target range is forced to converge stepwise in a first range and then in a second range narrower than the first range.

    摘要翻译： 使光束在主扫描方向上扫描和曝光感光鼓，并且感测光束在副扫描方向上的通过位置。 基于感测的结果，当通过扫描仪对光束进行扫描时，光束在副扫描方向上移动，使得通过位置可能进入目标范围，这使得通过位置到 适当的位置 在位置控制之后，确认和控制光束的通过位置，使得通过位置可以连续地落在适当的位置上一定次数。 当光束沿副扫描方向移动时，使光束的通过位置成为最终目标范围，使得目标范围被迫在第一范围内然后在第二范围内逐步收敛 比第一范围窄。