| http://www.w3.org/ns/prov#value | - BACKGROUND OF THEINVENTIONThe present invention relates to an image forming apparatus such as a copying apparatus or a printer, and particularly to an image forming apparatus of a vertical feed type, wherein a sheet is fed in a vertical direction to pass the sheet througha transfer area.Recently, as an image forming apparatus, a multiple apparatus (referred to as an MPF hereinafter) having functio
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