Inventors:
Ira B. Goldberg - Thousand Oaks CA
Edward Hudyma - Bolingbrook IL
Ragy A. Isaac - Bolingbrook IL
Kenneth W. Dabisch - Bolingbrook IL
International Classification:
B41F 2700
Abstract:
A printing press with a page cutting control apparatus (11) for controlling cut-off registration in a rotary printing press (10) includes markers (30, 32, 51, 53) for printing reference marks (36) on webs (20, 23) with magnetizable ink having magnetic particles therein, magnetizers (62, 64, 65, 67) for magnetizing the reference marks, sensors (121-124) for magnetically detecting the reference marks, and a controller (140) for changing the web length in response to the detecting.