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    Image recording apparatus using optical beam
    2.
    发明授权
    Image recording apparatus using optical beam 失效
    使用光束的图像记录装置

    公开(公告)号：US5463410A

    公开(公告)日：1995-10-31

    申请号：US252625

    申请日：1994-06-01

    申请人： Seiji Uchiyama ,  Akio Noguchi ,  Yukihide Ushio ,  Shinpei Matsuo ,  Youji Serizawa ,  Makoto Takeuchi ,  Kazurou Yamada ,  Junichi Kato

    发明人： Seiji Uchiyama ,  Akio Noguchi ,  Yukihide Ushio ,  Shinpei Matsuo ,  Youji Serizawa ,  Makoto Takeuchi ,  Kazurou Yamada ,  Junichi Kato

    IPC分类号： B41J2/47 ,  G03G15/16 ,  G01D9/42

    CPC分类号： G03G15/1675 ,  B41J2/471 ,  G03G15/168 ,  G03G2215/1614 ,  G03G2215/1657

    摘要： In a laser beam printer, automatic optical quantity (APC) control is performed based on an optical quantity detection output to generate a laser beam having a predetermined quantity of light. In each scanning cycle, APC is effected by utilizing a period (unblanking period) in which the laser device is forcibly actuated to generate a horizontal synchronization signal. The unblanking period may be changed according to the print paper size or image formation/non-image-formation periods. Also, light quantity control may be effected through a plurality of scanning cycles before image formation and may be effected by utilizing the unblanking period during the period corresponding to the intervals of print sheets. Techniques also provided to prevent a transfer unit from being contaminated by toner images formed as a byproduct of APC.

    摘要翻译： 在激光束打印机中，基于光量检测输出执行自动光量（APC）控制，以产生具有预定量的光的激光束。 在每个扫描周期中，APC通过利用激光装置被强制致动以产生水平同步信号的周期（非白平衡周期）来实现。 可以根据打印纸尺寸或图像形成/非图像形成期间来改变非曝光时段。 此外，光量控制可以在图像形成之前通过多个扫描周期进行，并且可以通过在对应于打印片材的间隔的期间利用非曝光时段来实现。 还提供了防止转印单元被作为APC副产物形成的调色剂图像污染的技术。