G - Physics – 06 – K
Patent
G - Physics
06
K
G06K 9/00 (2006.01) B41J 3/54 (2006.01) G06K 15/02 (2006.01) H04N 1/047 (2006.01) H04N 1/191 (2006.01)
Patent
CA 2415612
A method is presented of determining the relative position (510) of a first imagesetting device (56) with respect to a second imagesetting device by setting images (58) on an associated imagesetting medium (54), said method comprising at least the following steps: an image of a group of mutually different reference patterns (16) and a basic pattern (18) is set by means of the second imagesetting device (58), which serves as a master, each reference pattern (16) from the group being assigned uniquely to one relative position. An image of at least one test pattern is set by means of the first imagesetting device (56), whose relative position is to be determined, over the basic pattern, so that a combination pattern (24) is produced. A reference pattern (16) whose area coverage coincides with the area coverage of the combination pattern (24) is determined. Since a relative position (510) is associated in a unique way with the identified pattern from the group, the relative position of the first with respect to the second imagesetting device (56, 58) is identified. The method according to the invention can advantageously be used in a printing form exposer or in a printing unit (52) of a printing press (50).
Koehler Thomas
Zintzen Bernhard
Dennison Associates
Heidelberger Druckmaschinen Aktiengesellschaft
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