Automatic simplex and duplex copying system

Abstract From the Canadian patent

In a simplex or duplex copier with plural different document inputs, including at least one input normally used for copying single documents and another normally used for copying plural documents a, system is provided for automatically selecting duplex copying whenever appropriate, to save copy sheets, including a controller programmed to automatically select between simplex or duplex copying and to direct the copy sheets into a duplex copying path when duplex copying is selected and respective document input sensors connected to provide control signals to the controller upon sensing a document at a respective document input, the controller automatically selecting duplex copying unless …