B - Operations – Transporting – 31 – B
Patent
B - Operations, Transporting
31
B
B31B 1/88 (2006.01)
Patent
CA 2491206
An apparatus and method for forming continuous webs of paperboard material into multiple box blanks having dual-faced printing. The apparatus comprises a printer for repetitively applying indicia to a first continuous web of paperboard material at predetermined intervals along the longitudinal axis thereof as the first continuous web moves through the printer, the printer including a motor-driven printing cylinder having a circumferential printing surface, and an impression cylinder having a rotational speed determined by the rate of travel of the first continuous web through the printer, at least one sensor operative to detect reference marks pre-printed on the second web at intervals along the longitudinal axis thereof; at least one encoder operative to generate signals corresponding to the rotational speed of the impression cylinder, and a computer controller: (a) operatively connected to the at least one sensor to receive information corresponding to the position of the reference marks pre-printed on the second web; (b) operatively connected to the at least one encoder to receive signals corresponding to the rotational speed of the impression cylinder; and (e) operatively connected to the printing cylinder motor and operative to match the rotational speed of the printing cylinder to the rotational speed of the impression cylinder as established by the at least one encoder, and further operative to selectively adjust the rotational speed of the printing cylinder in order to bring the printing applied by each revolution of the printing cylinder into the area defined between adjacent reference marks on the second continuous web as detected by the at least one sensor.
Blackburn Mark
Hutchinson Arthur
Compak Inc.
Ridout & Maybee Llp
LandOfFree
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