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    • 4. 发明授权
    • Image forming apparatus provided with a movement control mechanism for
optical system
    • 具有光学系统的移动控制机构的图像形成装置
    • US5752127A
    • 1998-05-12
    • US814847
    • 1997-03-11
    • Makoto OkadoYoshihiro UedaTadashi KobataMasami Taniguchi
    • Makoto OkadoYoshihiro UedaTadashi KobataMasami Taniguchi
    • G03G21/00G03B27/34G03G15/04G03G15/041G03G15/043H04N1/04
    • G03G15/041
    • This invention relates to an image forming apparatus of electro-photography type in which a light image obtained by reflected light from an original document image by projecting light onto the original document image is changed in size at a set magnification rate to form an electrostatic latent image on a photosensitive member, and the electrostatic latent image is developed into a toner image. The image forming apparatus includes: a magnification rate setting unit with a lens and a reflective mirror for determining a magnification rate of the light image; lens moving means for moving the lens between a first position and a second position; reflective mirror moving means for moving the reflective mirror between a third position and a fourth position along the optical path; and movement controlling means for controlling the lens moving means to move the lens and the reflective mirror between the first position and the second position and between the third position and the fourth position by respective predetermined distances upon receiving a command signal.
    • 本发明涉及一种电摄影类型的图像形成装置,其中通过将原始文件图像的反射光通过将光投影到原始文件图像上而获得的光图像以设定的放大率改变尺寸以形成静电潜像 在感光构件上,并且静电潜像显影成调色剂图像。 图像形成装置包括:放大率设定单元,具有用于确定光图像的放大率的透镜和反射镜; 透镜移动装置,用于在第一位置和第二位置之间移动透镜; 反射镜移动装置,用于沿着光路在第三位置和第四位置之间移动反射镜; 以及运动控制装置,用于控制透镜移动装置,以在接收到命令信号时将透镜和反射镜在第一位置和第二位置之间以及第三位置和第四位置之间移动相应的预定距离。