Printing – Multicolor – Processes
Patent
1989-04-19
1990-04-03
Eickholt, Eugene H.
Printing
Multicolor
Processes
101484, 101225, 226 7, 226 45, 226 30, B41M 114
Patent
active
049130498
ABSTRACT:
A system and method for generating indicia of registration error between respective, separately adjustable printing units of a printing press, the printing units cooperating to print an image on a moving web, the system being of the type comprising a photo-optical control, having a field of view and depth-of-field, for generating output signals indicative of a predetermined relative disposition of marks on a web passing through the field of view within the depth-of-field of the photo-optical control as the web moves in relation to the printing units, and processing circuits, responsive to the photo-optical output signals, for generating signals indicative of deviations of the registration marks printed by the printing units from the predetermined relative disposition; improved wherein:
REFERENCES:
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patent: 3622058 (1971-11-01), Vits
patent: 4038917 (1977-08-01), Deligt
patent: 4096801 (1978-06-01), Martin
patent: 4137644 (1979-02-01), Karlsson
patent: 4240346 (1980-12-01), Landis et al.
patent: 4321107 (1982-03-01), Page
patent: 4342413 (1982-08-01), Reba
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patent: 4453709 (1984-06-01), Reba
patent: 4541337 (1985-09-01), Schaul
Three page Bertin & Cie brochure entitled "Calgraph Systeme" Control de reperage (Register Control), 4-7-89.
Eickholt Eugene H.
Quad/Tech Inc.
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