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    • 8. 发明授权
    • Color image forming apparatus
    • 彩色图像形成装置
    • US5381167A
    • 1995-01-10
    • US962862
    • 1992-10-19
    • Yozo FujiiTadashi MiwaHisao SatohAtsushi OganeIsao MatsuokaTadayoshi Ikeda
    • Yozo FujiiTadashi MiwaHisao SatohAtsushi OganeIsao MatsuokaTadayoshi Ikeda
    • G03G15/01H04N1/047H04N1/113H04N1/12H04N1/50G01D15/14
    • G03G15/0152G03G15/0163H04N1/0473H04N1/506H04N1/1135H04N1/12H04N2201/0471H04N2201/04748H04N2201/04756H04N2201/04786
    • A color image forming machine includes a plurality of exposure units for irradiating an image carrier movable in a secondary scanning direction of the exposure units by primary scanning beams, at a plurality of irradiation positions to form latent images, a plurality of charging units for charging the image carrier corresponding to the irradiation positions of the exposure units and a plurality of developing units to form toner images corresponding the latent images. The plurality of toner images are superimposed on the image carrier to obtain a multi-color or full-color images trough transferring and fixing. A light-reflective registration mark is provided to a non-image area on one side of the image carrier. Employing at least two exposure units, irradiation by each primary scanning beam is conducted to the light-reflective registration mark moving in the secondary scanning direction. Each reflected beam from the registration mark is received by a plurality of photoreceptor sensors and then detection signals of a registration mark position are generated. Timing of writing by the primary scanning beam and a distance between bright lines formed on the image carrier by primary scanning beams of at least two exposure units are detected. The detected result is fed back to control the start timing of image writing and the driving of the image carrier.
    • 一种彩色图像形成机包括多个曝光单元,用于在多个照射位置处照射通过主扫描光束在曝光单元的副扫描方向上可移动的图像载体,以形成潜像;多个充电单元, 对应于曝光单元的照射位置的图像载体和多个显影单元,以形成对应于潜像的调色剂图像。 多个调色剂图像叠加在图像载体上,以通过传送和固定获得多色或全色图像。 光反射对准标记被提供给图像载体的一侧上的非图像区域。 使用至少两个曝光单元,每个主扫描光束的照射被传导到在二次扫描方向上移动的光反射对准标记。 来自对准标记的每个反射光束被多个感光体传感器接收,然后产生对准标记位置的检测信号。 检测由初级扫描光束写入的时序以及通过至少两个曝光单元的主扫描光束形成在图像载体上的亮线之间的距离。 反馈检测结果来控制图像写入的开始定时和图像载体的驱动。