Abstract: A copying apparatus capable of copying and printing an image of a document on one side or on either side of a printing sheet including a plurality of image recording units each including an image recording member and a variety of devices associated with the image recording member for performing image copying. The adjacent two image recording units are connected together by a printing sheet transporting path provided with printing sheet reversing means having a switch member. Printing sheets each having an image of a document copied and printed on one side thereof by the image recording member of the first image recording unit have their posture reversed by the printing sheet reversing means so that an opposite side thereof will face the image recording member of the second image recording unit, whereby the image of the document can be printed on the opposite side of the printing sheets.