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    Optical print head and image forming apparatus
    1.
    发明公开
    Optical print head and image forming apparatus 有权
    Optischer druckkopf und bilderzeugungsvorrichtung

    公开(公告)号：EP2921305A1

    公开(公告)日：2015-09-23

    申请号：EP15158601.3

    申请日：2015-03-11

    申请人： Konica Minolta, Inc.

    发明人： Watanabe, Yoshikazu ,  Masuda, Satoshi ,  Obayashi, Makoto ,  Iijima, Masayuki ,  Yano, So ,  Uemura, Takaki

    IPC分类号： B41J2/45

    CPC分类号： B41J2/47 ,  B41J2/451 ,  B41J2002/453

    摘要： Optical print head includes: light-emitting elements connected one-to-one to current supply lines branching from first power line at different positions in longitudinal direction; holding elements; signal writing unit writing luminance signal into each holding element, the luminance signal being represented by voltage indicating light emission amount of corresponding light-emitting element; second power line supplying reference voltage to each holding element, the reference voltage being reference when signal writing unit writes luminance signal into holding element; and driving drivers corresponding one-to-one with current supply lines and controlling current supplied to corresponding current supply line from first power line, in accordance with voltage held in corresponding holding element when signal writing unit has written luminance signal into corresponding holding element, wherein power source supplying the reference voltage to second power line is common with power source supplying voltage to signal output subunit outputting luminance signal.

    摘要翻译： 光学打印头包括：与第一电源线在纵向不同位置分支的电流供应线路一对一连接的发光元件; 持有元素; 信号写入单元将亮度信号写入每个保持元件，所述亮度信号由指示相应发光元件的发光量的电压表示; 第二电源线将参考电压提供给每个保持元件，参考电压是当信号写入单元将亮度信号写入保持元件时参考的; 以及当信号写入单元将亮度信号写入到相应的保持元件中时，根据当前保持在相应的保持元件中的电压，从当前电源线对应一对一驱动驱动器并控制从第一电源线提供给相应电流线的电流，其中 向第二电力线提供参考电压的电源与向输出信号的输出子单元输出亮度信号的电源供电相同。