Non-standard paper detection device of printing press and processing method of non-standard paper picked up using same

摘要

Disclosed are a non-standard paper detecting apparatus of a printing press and a method of processing a non-standard paper picked up using the same. Non-standard paper detectors are separated from each other by a predetermined distance along a direction intersecting at a predetermined angle with respect to the paper feed direction so as to partition the passage detection area for the paper on the paper feed path leading from the paper storage of the printing machine to the printing unit through the printing unit. Compares the plurality of paper bin identification sensors arranged to output electrical signals corresponding to the paper passage, and the electrical signals output from the paper passage identification sensors to determine whether the paper is over the specification, and whether the paper is over the standard. And a non-standard paper judging section for outputting information to the controller that controls the first half of the printing press. The non-standard paper detection device can process non-standard paper so that image printing is not performed, thereby reducing printing waste by suppressing image printing on non-standard paper.