Patent ID: 6615730
Filing Date: 2003-09-09
Classification: B41F,B41P

Abstract:
A method for controlling, in a power failure, a rotary press having a printing section and a folding section separately driven by independent drive sources, with a printing material, while being braked by a paper feeding section, being pulled by at least the folding section and brought into contact with a blanket cylinder of the printing section to produce printing impressions on the printing material, the method comprising steps of:changing over the braking of the printing material in the paper feeding section to a braking mode with a constant braking force upon interruption of power feeding due to a main power failure; outputting a power failure signal upon detection of a voltage drop as the result of the power failure and changing over the power supply to a battery power supply; separating the blanket cylinder that is at press from the printing material by applying the power failure signal and a power from the battery power supply; and decelerating and bringing to a halt a printing material pulling mechanism in the folding section by applying the power failure signal and the power from the battery power supply.