Image forming apparatus

An image forming apparatus comprising:

• a sheet tray loaded with a stack of sheets;
• separating and feeding means for feeding one sheet from said sheet tray while separating said one sheet from the other sheets;
• an image forming section for forming an image on the sheet fed by said separating and feeding means;
• a conveyance path for conveying the sheet from said sheet tray to said image forming section;
• a switchback path connected to an intermediate portion of said conveyance path for receiving the sheet being conveyed along said conveyance path;
• reversing means selectively switchable to a first position for switching back a preceding sheet introduced into said switchback path to thereby feed said sheet to said conveyance path or a second position for allowing said preceding sheet being fed from said switchback path and a sheet to be introduced into said switchback path after said preceding sheet to at least partly overlap each other;
• a refeed path connected to a sheet outlet side of said image forming section and part of said conveyance path upstream of said switchback path;
• and
• conveying means for conveying the sheet driven into said refeed path to said conveyance path.