Method and device for toning detection in a printing press
OwnerBirger Hanssoninventor
Life of this patent
Estimating the term…
Abstract
A toning in the form of a circumferential printing ink band (7) on printing plates on a rotating plate cylinder (1) shall be detected during operation. The reflectivity of the surface of the printing plates is axially scanned by means of a sensor (4), and a reflectivity deviating from a predetermined value in the area in question is taken as an indication of a toning.
Claims9
A method in a printing press for detecting during operation a toning in the form of a circumferential printing ink band (7) on printing plates on a rotating plate cylinder (1), characterized in that the reflectivity of the surface of the rotating printing plates is axially scanned and that a reflectivity deviating from a predetermined value in the area in question is taken as an indication of a toning.
A device in a printing press for detecting during operation a toning in the form of a circumferential printing ink band (7) on printing plates on a rotating plate cylinder (1), characterized in that a sensor (4) for emitting signals indicative for the reflectivity of the surface of the rotating printing plates is movably arranged on a rod (5) in the axial direction of the plate cylinder (1).
Dependencies are inferred from the claim text.