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    Exposure device, image forming apparatus, exposure control method and computer-readable medium
    1.
    发明授权
    Exposure device, image forming apparatus, exposure control method and computer-readable medium 有权
    曝光装置，图像形成装置，曝光控制方法和计算机可读介质

    公开(公告)号：US08368734B2

    公开(公告)日：2013-02-05

    申请号：US12548964

    申请日：2009-08-27

    申请人： Ken Tsuchiya ,  Michio Taniwaki ,  Fumihiko Ogasawara ,  Toshio Hisamura ,  Osamu Yasui ,  Michihiro Inoue

    发明人： Ken Tsuchiya ,  Michio Taniwaki ,  Fumihiko Ogasawara ,  Toshio Hisamura ,  Osamu Yasui ,  Michihiro Inoue

    IPC分类号： B41J2/435 ,  B41J2/47

    CPC分类号： H04N1/40056

    摘要： An exposure device includes a plurality of light-emitting elements, a lighting driver, a first storage, a reader, a shading correction unit and a second storage. The lighting driver drives and lights up the light-emitting elements based on image data. The first storage stores light amount unevenness correction values of the respective light-emitting elements. The reader reads the light amount unevenness correction values stored in the first storage. The shading correction unit executes shading correction for the light amount unevenness correction values read by the reader. The second storage stores correction values obtained by having the shading correction unit to execute the shading correction for the light amount unevenness correction values. The lighting driver controls light power of the respective light-emitting elements based on the correction values stored in the second storage.

    摘要翻译： 曝光装置包括多个发光元件，照明驱动器，第一存储器，读取器，阴影校正单元和第二存储器。 照明驱动器基于图像数据驱动并点亮发光元件。 第一存储器存储各个发光元件的光量不均匀校正值。 读取器读取存储在第一存储器中的光量不均匀性校正值。 阴影校正单元对读取器读取的光量不均匀性校正值执行阴影校正。 第二存储器存储通过使阴影校正单元执行光量不均匀校正值的阴影校正而获得的校正值。 照明驱动器基于存储在第二存储器中的校正值来控制各个发光元件的光功率。

    EXPOSURE DEVICE, IMAGE FORMING APPARATUS AND COMPUTER-READABLE MEDIUM
    2.
    发明申请
    EXPOSURE DEVICE, IMAGE FORMING APPARATUS AND COMPUTER-READABLE MEDIUM 审中-公开
    曝光装置，图像形成装置和计算机可读介质

    公开(公告)号：US20100182391A1

    公开(公告)日：2010-07-22

    申请号：US12563467

    申请日：2009-09-21

    申请人： Osamu Yasui ,  Michihiro Inoue ,  Ken Tsuchiya ,  Michio Taniwaki ,  Toshio Hisamura ,  Fumihiko Ogasawara

    发明人： Osamu Yasui ,  Michihiro Inoue ,  Ken Tsuchiya ,  Michio Taniwaki ,  Toshio Hisamura ,  Fumihiko Ogasawara

    IPC分类号： B41J2/435

    CPC分类号： G06K15/1247

    摘要： An exposure device includes an exposure section and first and second signal output units. The exposure section has plural light emitting elements. The first signal output unit outputs to the exposure section a first signal for determining timings for starting and ending light emission of the respective light emitting elements. The second signal output unit outputs to the exposure section a second signal for determining as to whether the respective light emitting elements are caused to emit light for respective pixels. If light mission of the respective light emitting elements is stopped with respect to all pixels of one line in a main scanning direction, the first signal does not output to the exposure section for each group of one or plural light emitting elements that operate based on the common first signal.

    摘要翻译： 曝光装置包括曝光部分和第一和第二信号输出单元。 曝光部具有多个发光元件。 第一信号输出单元向曝光部分输出用于确定各个发光元件的发光的起始和结束的定时的第一信号。 第二信号输出单元向曝光部分输出用于确定各个发光元件是否对各个像素发光的第二信号。 如果相对于主扫描方向上的一行的全部像素停止各个发光元件的光任务，则对于基于该扫描方式操作的一组或多个发光元件的组，不向曝光部分输出第一信号 共同的第一个信号。

    Exposure device, image forming apparatus and computer readable medium storing program for exposure control
    3.
    发明授权
    Exposure device, image forming apparatus and computer readable medium storing program for exposure control 有权
    曝光装置，图像形成装置和用于曝光控制的计算机可读介质存储程序

    公开(公告)号：US08022974B2

    公开(公告)日：2011-09-20

    申请号：US12568256

    申请日：2009-09-28

    申请人： Fumihiko Ogasawara ,  Osamu Yasui ,  Michihiro Inoue ,  Ken Tsuchiya ,  Michio Taniwaki ,  Toshio Hisamura

    发明人： Fumihiko Ogasawara ,  Osamu Yasui ,  Michihiro Inoue ,  Ken Tsuchiya ,  Michio Taniwaki ,  Toshio Hisamura

    IPC分类号： B41J2/435 ,  B41J2/47

    CPC分类号： G03G15/326 ,  G03G15/04054 ,  G06K15/1247

    摘要： An exposure device includes plural light emitting elements that light in turn for exposure, plural driving elements that drive each of the light emitting elements and a time changing member that changes one time period of a switching signal to switch light emitting elements driven by the driving elements among the plurality of light emitting elements in turn from a reference time, depending on an image forming speed, wherein the time changing member changes the one time period from the reference time for some of the light emitting elements during one main scan, and maintains the one time period as the reference time for the remaining light emitting elements.

    摘要翻译： 曝光装置包括依次曝光的多个发光元件，驱动每个发光元件的多个驱动元件和改变切换信号的一个时间周期的时间变化部件，以切换由驱动元件驱动的发光元件 根据图像形成速度，从参考时间开始，在多个发光元件中，其中时间变化部件在一个主扫描期间从一些发光元件的基准时间改变一个时间段，并且维持 一个时间段作为剩余发光元件的基准时间。

    EXPOSURE DEVICE, IMAGE FORMING APPARATUS, EXPOSURE CONTROL METHOD AND COMPUTER-READABLE MEDIUM
    4.
    发明申请
    EXPOSURE DEVICE, IMAGE FORMING APPARATUS, EXPOSURE CONTROL METHOD AND COMPUTER-READABLE MEDIUM 有权
    曝光装置，图像形成装置，曝光控制方法和计算机可读介质

    公开(公告)号：US20100214626A1

    公开(公告)日：2010-08-26

    申请号：US12548964

    申请日：2009-08-27

    申请人： Ken TSUCHIYA ,  Michio TANIWAKI ,  Fumihiko OGASAWARA ,  Toshio HISAMURA ,  Osamu Yasui ,  Michihiro INOUE

    发明人： Ken TSUCHIYA ,  Michio TANIWAKI ,  Fumihiko OGASAWARA ,  Toshio HISAMURA ,  Osamu Yasui ,  Michihiro INOUE

    IPC分类号： H04N1/40

    CPC分类号： H04N1/40056

    摘要： An exposure device includes a plurality of light-emitting elements, a lighting driver, a first storage, a reader, a shading correction unit and a second storage. The lighting driver drives and lights up the light-emitting elements based on image data. The first storage stores light amount unevenness correction values of the respective light-emitting elements. The reader reads the light amount unevenness correction values stored in the first storage. The shading correction unit executes shading correction for the light amount unevenness correction values read by the reader. The second storage stores correction values obtained by having the shading correction unit to execute the shading correction for the light amount unevenness correction values. The lighting driver controls light power of the respective light-emitting elements based on the correction values stored in the second storage.

    摘要翻译： 曝光装置包括多个发光元件，照明驱动器，第一存储器，读取器，阴影校正单元和第二存储器。 照明驱动器基于图像数据驱动并点亮发光元件。 第一存储器存储各个发光元件的光量不均匀校正值。 读取器读取存储在第一存储器中的光量不均匀性校正值。 阴影校正单元对读取器读取的光量不均匀性校正值执行阴影校正。 第二存储器存储通过使阴影校正单元执行光量不均匀校正值的阴影校正而获得的校正值。 照明驱动器基于存储在第二存储器中的校正值来控制各个发光元件的光功率。