发明授权
US4241991A Photocopying machine 失效
复印机

Photocopying machine
摘要:
A duplex copying machine is provided with an open operator-accessible buffer storage tray and appropriate sheet feeding means to feed paper through the machine. In duplexing mode, sheet feeding takes place from the buffer storage tray instead of the main paper supply store.
公开/授权文献
信息查询
0/0