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AssigneeNexPress Solutions LLC
InventorsPatrick Metzler, Karlheinz Walter Peter
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The invention relates to a method and apparatus for setting register in a multicolor printing machine (1) having a number of items of equipment (2, 2′, . . . ) for the digital production of color separations (3, 3′, . . . ), the print results being registered and used to control the production of the color separations (3, 3′,. . . ) in such a way that in-register prints are achieved, and a change in the dimensions (7, 8, 7′, 8′) of the printing substrates (4) being determined by means of the print, in order to take this change into account for renewed printing. The afore-mentioned method and the aforementioned apparatus are to be configured in such a way that coincidence can be achieved between the recto print and versa print. According to the invention, this is achieved by the changes in the dimensions (7, 8, 7′, 8′) of the recto print (6) from the transfer to the printing substrate (4) up to the completion of the recta print (6) being determined and being used to control the digital production of the color separations (3, 3′, . . . ) for the verso print (5) in such a way that after being printed, it coincides with the recto print (6).
A method of setting register in a multicolor printing machine (1) having a number of items of equipment (2, 2′, . . . ) for the digital production of color separations (3, 3′, . . . ), the print results being registered and used to control the production of the color separations (3, 3′, . . . ) in such a way that in-register prints are achieved, and a change in the dimensions (7, 8, 7′, 8′) of the printing substrates (4) being determined by means of the print, in order to take this change into account for renewed printing, wherein the changes in the dimensions (7, 8, 7′, 8′) of the recta print (6) from the transfer to the printing substrate (4) up to the completion of the recto print (6) are determined and used to control the digital production of the color separations (3, 3′, . . . ) for the versa print (5) in such a way that after being printed, it coincides with the recto print (6).
Dependencies are inferred from the claim text.