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AssigneeNexPress Solutions LLC
InventorsChristopher Liston, Patrick Metzler
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Apparatus and a method for correcting registration faults based on changes in machine state (4, 4′, . . . ; 5, 5′, . . . ) in a multicolor printing machine (1) having a number of printing units (13, 13′, . . . ) with image cylinders (14, 14′, . . . ) and exposure devices (2, 2′, . . . ) for the digital production of color separations (3, 3′, . . . ) on the image cylinders (14, 14′, . . . ), the actions of setting up and combining the color separations (3, 3′, . . . ) being controlled such that in-register prints are achieved. Changes in machine state (4, 4′, . . . ; 5, 5′, . . . ) are registered and, on the basis of these changes in machine state (4, 4′, . . . ; 5, 5′, . . . ), the production of the color separations (3, 3′, . . . ) is changed such that a disturbance to registration accuracy of the print, threatened by a change in machine state (4, 4′, . . . ; 5, 5′, . . . ), is compensated for.
A method of correcting registration faults based on changes in machine state (4, 4′;
Apparatus for a multicolor printing machine (1) having a number of printing units (13, 13′) with image cylinders (14, 14′) and exposure devices (2, 2′) for the digital production of color separations (3, 3′) on the image cylinders (14, 14′), and at least one controller (8, 8′) for achieving in-register prints, the actions of producing and combining color separations (3, 3′) being controlled by said at least one controller (8, 8′), wherein:
Dependencies are inferred from the claim text.