System and method for registration control on-press during press

Details System and method for registration control on-press during press System and method for registration control on-press during press

1998-09-21

2000-07-11

Eickholt, Eugene

Printing

Processes

Position or alignment

101181, 101211, 101DIG36, 36447101, 347260, B41L 302

Patent

active

060856580

ABSTRACT:
A system and method for controlling registration between different printing plates or printing cylinders in a printing press which includes a camera with a lens having at least two zoom settings and a control unit for changing the zoom setting of the camera in accordance with a distance between registration marks printed on a printed substrate found in at least one image acquired by the camera.

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patent: 5068810 (1991-11-01), Ott
patent: 5539487 (1996-07-01), Taguchi et al.
patent: 5572433 (1996-11-01), Falconer et al.
patent: 5592211 (1997-01-01), Porter et al.
patent: 5633676 (1997-05-01), Harley et al.
patent: 5809894 (1998-09-01), Goldstein
Press, W. et al., "Numerical Recipes in C--The Art of Scientific Computing", Second Edition, Cambridge University Press (1992), pp. 564-568 (and TOC).
Hall, Ernest L., "Computer Image Processing and Recognition", Academic Press (1979), pp. 231-238 (and TOC).

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