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31. 发明授权

US5395104A Paper conveying device 失效
标题翻译：纸张输送装置
公开(公告)号：US5395104A
公开(公告)日：1995-03-07
申请号：US186761
申请日：1994-01-25
申请人： Hiroyuki Harada , Yasuhiko Kida
发明人： Hiroyuki Harada , Yasuhiko Kida
IPC分类号： B65H5/02 , B65H9/00 , G03G15/00
CPC分类号： G03G15/60 , Y10S271/902
摘要： A paper conveying device overruns a document from a stop position and then, switches the document back so that the end of the document collies with a document abutting member provided in the stop position. At this time, the amount of overrun and the amount of switchback of the document are respectively set to the minimum ones required, to reduce the stress applied to the document, and the most suitable control is carried out even in a special mode (SDF mode) in which the document conveying speed is low. More specifically, at the time of the SDF mode, even if a stop instruction is given at timing T2, timing at which a conveying motor is turned off is delayed by a short time .increment.T. A distance A' from the timing T2 to the time when the conveying motor is completely stopped is detected, and the conveying motor is rotated in the reverse direction by a distance B' equal to the distance A'. The conveying motor is rotated in the reverse direction by position control. Consequently, in not only an ADF mode in which the document is conveyed at the standard speed but also the SDF mode in which the conveying speed is low, running distance data required for switchback control is obtained, thereby to make it possible to carry out the most suitable position control.
摘要翻译：纸张输送装置从停止位置超过文件，然后将文件切换回，使得文档的末端与设置在停止位置的文件抵靠构件相吻合。此时，将文件的超限量和转回量分别设定为所需的最小值，以减少施加到文档的应力，并且甚至在特殊模式（SDF模式）中也执行最合适的控制），其中文件传送速度较低。更具体地说，在SDF模式时，即使在定时T2中给出了停止指令，传送马达被关闭的定时被延迟很短时间INCREMENT T.从时刻T2到检测到输送马达完全停止的时间，并且输送马达沿相反方向旋转距离等于距离A'的距离。输送马达通过位置控制反向旋转。因此，不仅以标准速度传送文件的ADF模式，而且在传送速度低的SDF模式下，获得转向控制所需的行驶距离数据，从而可以执行最合适的位置控制。

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