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    • 10. 发明授权
    • Image forming apparatus
    • 图像形成装置
    • US5485261A
    • 1996-01-16
    • US279923
    • 1994-07-25
    • Masayoshi KurodaMasataka Oda
    • Masayoshi KurodaMasataka Oda
    • G03G21/14B65H7/04B65H83/02G03G15/00G03G15/23G03G15/36G03G21/02
    • G03G15/6579G03G15/234G03G2215/00578
    • There is disclosed an image forming apparatus capable of double-sided or overlay copying at high speed. While a sheet having initially copied a first original document is still being transported to an intermediate tray inside the apparatus, an image forming operation on a second document is started, and one of the initially copied sheets in the intermediate tray starts to be refed therefrom for secondary copying. If the designated number of copying sheets is larger than a predetermined value and when the number of times the image forming operation is performed has exceeded that value, the start of the subsequent image forming operation is delayed by a predetermined time so as to provide the currently transported sheet with an extended distance relative to the preceding sheet. Thus there occurs no interference or feed-related trouble between the sheet which copied the first document and which is being transported to the intermediate tray on the one hand, and the sheet refed from the same tray upon starting of an image forming operation on the second document on the other hand.
    • 公开了能够高速双面或叠加复印的图像形成装置。 虽然最初复制了第一原始文件的纸张仍然被传送到设备内部的中间托盘,但是在第二文档上的图像形成操作开始,并且中间托盘中的最初复印的纸张之一开始被从其中重新提供, 二次复印。 如果指定数量的复印纸大于预定值,并且当执行图像形成操作的次数超过该值时,则后续图像形成操作的开始被延迟预定时间,以便提供当前的 运送的纸张相对于前一张纸具有较长的距离。 因此,一方面在复制第一文件的纸张和正在运送到中间托盘的纸张之间没有发生干涉或进料相关故障,并且在第二张纸张开始成像操作时从相同的纸盘提取的纸张 另一方面是文件。