PRINTED UNIT BLOCK ARRANGEMENT DEVICE AND ARRANGEMENT METHOD

A problem to be solved is to achieve higher efficiency and higher accuracy of alignment work in a printed unit block aligning device. Primary cutting and secondary cutting are performed. Then, a group of printed unit blocks is dropped from an upper rail onto a lower rail group perpendicular to the upper rail. The printed unit block aligning device includes supporting means and an alignment transfer rail. The supporting means is opened and closed between a supporting position and a releasing position. The supporting position is a position where the group of the printed unit blocks in each line unit block fed horizontally and transferred from the lower rail group is received. The alignment transfer rail receives the group of the printed unit blocks dropped in response to move of the supporting means to the releasing position, aligns the group of the printed unit blocks in each line unit block in a vertical direction, and feeds the group of the printed unit blocks vertically at a constant speed using alignment transferring means. In this structure, electrical controlling means is provided that electrically controls timing of drop from the supporting means onto the alignment transfer rail. While a speed of transfer of the horizontal feeding and transferring means is determined to be uniform for any imposition structure, the electrical controlling means controls timing of drop in a manner that depends on the numbers of layers in each vertical line in different imposition structures.