A multi-mode copying machine capable of effecting copying in accordance with a sheet mode copying system and a book mode copying system is provided with an original feed apparatus having means for guiding conveyor belts to deflect away from an original irradiation position in their travel, the conveyor belts being adapted to transport an original in sheet form. Further, the original feed apparatus has means for transporting an original in sheet form exactly at a predetermined rate in the sheet mode copying system and for transporting the original without deformation or breakage while being fed at a high rate in the book mode copying system.