Rotary die cut stacking system having optical beam generator...

Details Rotary die cut stacking system having optical beam generator... Rotary die cut stacking system having optical beam generator...

2008-04-10

2010-12-21

Karmis, Stefanos (Department: 3653)

Sheet feeding or delivering

Feeding

By means to convey sheet

C271S198000

Reexamination Certificate

active

07854428

ABSTRACT:
A rotary die cut stacking system for use with a rotary die cutter having a rotary die configured to output die-cut sheets of material, the system including a stacker and a layboy for carrying die-cut sheets of material in a first direction from the die cutter to the stacker, wherein, the layboy has upper arms and lower arms defining a nip region therebetween for receiving the die-cut sheets, at least some of the upper arms and at least some of the lower arms being moveable transversely to the first direction, the layboy including at least one optical beam generator configured to direct an optical beam against a portion of the rotary die cutter so that a position of the arms relative to the rotary die can be determined based on the location of the optical beam on the portion of the rotary die cutter.

REFERENCES:
patent: 3321202 (1967-05-01), Martin
patent: 3419266 (1968-12-01), Martin
patent: 3860232 (1975-01-01), Martin
patent: 5768137 (1998-06-01), Polidoro et al.
patent: 6427097 (2002-07-01), Martin et al.

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