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AssigneeMatthews International Corporation
InventorsKonrad KLIMMEY, Daniel SCHMIDT
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The invention relates to a method for checking a printing cylinder for defects in an engraved cylinder surface of the printing cylinder, comprising the steps: capturing a first and at least one further digital image of a cylinder surface of a printing cylinder by means of an optical capture unit, wherein the cylinder surface is cleaned before capturing the at least one further image, comparing the digital images each with a digital engraving master of the printing cylinder, the comparing comprising: determining deviations between each of the digital images and the digital engraving master, and checking the determined deviations for matching deviations between the digital images, wherein a pseudo defects is concluded if no matching deviations between the digital images have been detected when comparing, and wherein an engraving defect on the printing cylinder is concluded in the case of matching deviations. Furthermore, a corresponding arrangement is described.
A method for checking a printing cylinder for defects in an engraved cylinder surface of the printing cylinder, comprising the steps:
An arrangement for checking a printing cylinder for defects in an engraved cylinder surface of the printing cylinder, with an optical capture unit which is linearly adjustable by means of an adjustment unit along a longitudinal axis of a rotatably mounted printing cylinder, the optical capture unit being directed towards an area to be captured of the printing cylinder surface and being connected to the adjustment unit via a supporting device, wherein the optical capture unit (4) further has one or more light sources which are alignable or aligned with the area to be captured at different angles to the printing cylinder surface.
Dependencies are inferred from the claim text.