Printing press and paper-splicing method for reel stand unit

Abstract

A paper splicing method for a printing press and a reel stand unit that prevents misregistration at a paper-splicing section in the top-to-bottom direction and that enables improvement of printing quality and stable printing are provided. Provided is a printing press including a reel stand unit configured to bond a web fed out from an old reel to a new reel and continuously feed paper by splicing paper from the old reel to the new reel, wherein the distance in the length direction of an overlapping section of the old reel and the new reel spliced by the reel stand unit is smaller than the minimum distance between driving rollers provided in the printing press. The driving rollers are, in particular, the distance between a printing unit and a blanket cylinder.

1 . A printing press comprising:
 a reel stand unit configured to bond a web fed out from an old reel to a new reel and continuously feed paper by splicing paper from the old reel to the new reel,   wherein the distance in the length direction of an overlapping section of the old reel and the new reel spliced by the reel stand unit is smaller than the minimum distance between driving rollers provided in the printing press.   
     
     
         2 . The printing press according to  claim 1 , further comprising:
 a cutter configured to cut the old reel spliced to the new reel; and   a control unit configured to control the cutting timing of the cutter,   wherein the control unit controls the cutting timing of the cutter such that the distance in the length direction of the overlapping section of the old reel and the new reel is smaller than the minimum distance between the driving rollers provided in the printing press.   
     
     
         3 . The printing press according to  claim 2 , wherein the control unit determines the cutting timing of the cutter on the basis of at least one of cutter delay time, preparation length, and a cutter-to-brush distance. 
     
     
         4 . A splicing method for a reel stand unit configured to bond a web fed out from an old reel to a new reel and continuously feed paper by splicing paper from the old reel to the new reel, the method comprising:
 cutting the old reel after the old reel is bonded to the new reel such that the distance of an overlapping section of the old reel and the new reel is smaller than the minimum distance between driving rollers provided on a path where the web passes until the web is finally cut.