Paper roll driving apparatus

A paper roll driving apparatus for use in a paper roll feeding apparatus comprising paper roll supports supported facing each other by a driven rotating shaft in such a manner that the paper roll supports can be rotated along the rotating shaft and fixed at desired positions, at least a pair of supporting members provided facing each other on each of the paper roll supports in such a manner that the supporting members can be rotated on a rotational center line parallel with the axial center of the rotating shaft, a driven mechanism provided on each of the supporting members of at least any one of the paper roll supports, a driving transmission mechanism that can be connected to the driven mechanism;

• wherein the driving transmission mechanism being connected to the driven mechanism to cause the supporting members to rotate so that the paper roll can be rotated via the supporting members, the paper roll driving apparatus comprising:
• a prime mover moving mechanism comprising a guide rail provided parallel with the rotating shaft, and a moving body having a prime mover mounted thereon that can be freely reciprocated along the guide rail, and the moving body being connected to the paper roll support in such a manner that the moving body can be moved in the direction parallel with the rotating shaft along with the movement of the paper roll support along with the rotating shaft;
• a cable supporting mechanism having a plurality of links connected in such a manner as to be bendable only in one direction;
• wherein with one end thereof fitted to the moving body, the links bent between both ends, and the other end thereof fixedly fitted to a part in the middle or vicinity of the moving range of the moving body;
• and
• a driving transmission mechanism comprising a relay shaft rotatably provided parallel with the rotating shaft on the moving body, an arm provided on the moving body in such a manner as to pivot around the axial center of the relay shaft and having a transmission part driven by the prime mover via at least the relay shaft, and a pivoting means for pivoting the arm at a predetermined angle,
• wherein both the prime mover and the driving transmission mechanism being integrally movable parallel with the rotating shaft, together with the paper roll supports.