Patent ID: 6820549
Filing Date: 2004-11-23
Classification: B41F,B65H,Y10S

Abstract:
A rotary press comprising;a printing unit for printing on a web supplied from a winding roll; a folding machine for folding the printed web supplied from said printing unit; a wrap-up preventive member retreating from and advancing to a web traveling path between said printing unit and said folding machine, during printing and plate mounting, respectively, to come into contact with the web; driving means for selectively, rotatably driving said winding roll in a reel-out direction and a winding direction; tension detecting means for detecting a tension of the web between said winding roll and said printing unit; control means for controlling said driving means on the basis of a detection result of said tension detecting means during plate mounting; wherein when said tension detecting means detects a slack, said control means controls said driving means such that said winding roll rotates in the direction to wind the web, and when said tension detecting means detects an excessive tension, said control means controls said driving means such that said winding roll rotates in the direction to reel out the web.