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    • 2. 发明授权
    • Copying apparatus
    • 复印机
    • US4862219A
    • 1989-08-29
    • US169132
    • 1988-03-10
    • Nobutoshi YoshidaNobuyuki MiykeAtsushi TakagiTakashi SaitoTadashi SuzukiNaoyuki OhkiMasahiro TomosadaHideki AdachiHiroaki Takeda
    • Nobutoshi YoshidaNobuyuki MiykeAtsushi TakagiTakashi SaitoTadashi SuzukiNaoyuki OhkiMasahiro TomosadaHideki AdachiHiroaki Takeda
    • G03G15/00G03G15/01
    • G03G15/5025G03G15/01G03G15/50G03G15/5016
    • There is a multi-color copying apparatus having image processing functions which can easily designate arbitrary areas when the trimming or masking is executed. This apparatus comprises: an area designating device to designate the first area of the original; a first developing device to develop the image of the first area in the first color; a second developing device to develop the image of the second area in the second color; and a control circuit for making the first developing device operative without making the second developing device operative in accordance with the designation of the first area and, after completion of the development of the image of the first area, making the second developing device operative without making the first developing device operative. The control circuit inhibits the operation of the first or second developing device by moving the first or second developing device to a position away from the photo sensitive drum, or by applying the bias voltage to the first or second developing device such that the toner from the inoperative developing device is not deposited onto the drum.
    • 存在具有图像处理功能的多色复印装置,其可以在执行修剪或掩蔽时容易地指定任意区域。 该装置包括:指定原稿的第一区域的区域指定装置; 用于开发第一颜色的第一区域的图像的第一显影装置; 第二显影装置,用于显影第二颜色的第二区域的图像; 以及用于使第一显影装置可操作而不使第二显影装置根据第一区域的指定而起作用的控制电路,并且在完成第一区域的图像的完成之后,使得第二显影装置在不进行 第一个显影装置可操作。 控制电路通过将第一或第二显影装置移动到远离感光鼓的位置或通过将偏置电压施加到第一或第二显影装置来阻止第一或第二显影装置的操作,使得来自 不能将显影装置沉积在滚筒上。