To reduce the number of parts items and the man-hour, and reduce weight and a cost in an automatic sheet carrying device having a U-turn-shaped document carrying passage to be applied to an automatic document feeding device such as a facsimile or a copying machine by integrally forming a sheet carrying passage from a sheet sucking part to a returning part and a sheet carrying passage from the returning part to a sheet ejection part.

A sheet feeding rib 16m is projected by one body molding from a carrying guide surface 16a continuing from the sheet sucking in part in an integrated resin frame 16 to form the carrying guide surface to the sheet ejecting part. A recess 16c is formed in the frame, and a retard roller 24 and ribs 16f, 16i for supporting the transmission mechanism and an energizing mechanism of the retard roller 24 are installed by integrated molding in the recess 16c.