Printing – Inkers – Fountains
Patent
1997-12-10
1999-07-27
Burr, Edgar
Printing
Inkers
Fountains
101211, 382112, B41F 3102
Patent
active
059272015
ABSTRACT:
In carrying through quality management while printing a web on a rotational roller printing machine high accuracy is obtained by a periodic returning, simultaneous measuring of color density and spectral distribution in at least one selected point of the periodically returning printing pattern; the continuous registration and storing of the measuring results over the entire duration of the production process; an analysis of the measured results by predetermined criteria at least at the end of production. For doing so a device is provided with at least one adjustable measuring head spanning the width of the printed web, containing a spectrometer and a light source; the measuring head can be activated depending on the product by means of an encoder assigned to the rotational roller printing machine. Further, a control device is provided that can continuously record the measuring signals of each measuring head.
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Birkenfeld Andreas
Reichel-Langer Karl-Heinz
Baldwin Grafotec GmbH
Burr Edgar
Ghatt Dave A.
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