Abstract: An apparatus for transferring a sheet between a plurality of printing units is disclosed. A transfer cylinder is provided between the adjacent units and is rotated by a motor. A drive gear mechanically connected to the motor and a driven gear mechanically connected to the transfer cylinder mate with each other. The press on a single surface and on both surfaces of the sheet are selectively performed, and a phase between the gears is adjusted by a phase adjusting mechanism. Stoppers are formed with the drive gear and driven gear respectively, for stopping relative rotation between the gears.

Abstract: A sheet transferring apparatus transfers a sheet between a plurality of printing units. Multiple color press on a single surface of the sheet and a single color press on both surfaces of the sheet are selectively performed. A feed cylinder is rotatably provided between the adjacent units. A power source actuates the feed cylinder. A first rotating member is mechanically connected to the power source. A second rotating member is mechanically connected to the feed cylinder. The second member is arranged to be driven by said first member. A phase adjusting mechanism automatically adjusts a phase between the first and second members in accordance with the multiple color press and the single color press.