PURPOSE: To permit vertical conveyance of cards between belts by installing a plurality of conveying rollers in parallel in the vertical direction and winding a flat belt in double form so as to meander mutually in the reverse direction on the roller surface of each roller using a normal flat belt.

CONSTITUTION: A plurality of coveying rollers 1 are arranged in parallel in the vertical direction, and flat belts 2a and 2b are put in double form so as to meander mutually in the reverse direction on the roller surface 3 of each roller 1, and the both edge areas of each belt 2a, 2b are connected endlessly. A card carrying-in port 6 is installed at one of the upper and lower dividing parts 4 and 5 of each belt 2a, 2b, and a card carrying-out port 7 is installed at the other. A proper tension is applied onto each belt 2a, 2b by a tension roller 9a, 9b, and auxiliary rollers 10 for realy are arranged properly. Further, the belt conveyor 15 and the guide plate 16 for assisting conveyance of cards 8 are installed in the vicinity of the card carrying-in port 6.