Method and apparatus for precision counting and tracking of...

Details Method and apparatus for precision counting and tracking of... Method and apparatus for precision counting and tracking of...

2006-02-21

2006-02-21

Porta, Dave (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

C250S22300B

Reexamination Certificate

active

07002135

ABSTRACT:
Printed products are accurately detected, counted and tracked as they move from a gripper conveyor to a lay down conveyor. The printed products are further tracked from a position where they reach a sensor upstream of the stacker where the position of selected printed products is provided to the stacker, together with a flag for those selected printed products, to assure that all of the stacker operations, including product stream interception, turntable rotation and bundle ejection, are performed with precision. Counting and tracking are performed by different sensors upstream relative to the stacker and the tracking function is transferred to the stacker when a flagged signature reaches a nip of the stacker infeed. Counting of printed products by the stacker is eliminated.

REFERENCES:
patent: 3507492 (1970-04-01), Spencer
patent: 4037525 (1977-07-01), Sjogren et al.
patent: 4604851 (1986-08-01), Reist
patent: 4678387 (1987-07-01), Sjogren et al.
patent: 6876716 (2005-04-01), Sjogren et al.

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