US 12,143,555 B2
Method and apparatus for printing a paper web
Sabrina Pfeiffer, Kyritz (DE); Sebastian Dicke, Bantikow (DE); Falko Geitz, Zernitz-Lohm (DE); and Frank Oldorff, Schwerin (DE)
Assigned to SWISS KRONO TEC AG, Lucerne (CH)
Appl. No. 18/266,939
Filed by SWISS KRONO Tec AG, Lucerne (CH)
PCT Filed Nov. 25, 2021, PCT No. PCT/EP2021/082974
§ 371(c)(1), (2) Date Jun. 13, 2023,
PCT Pub. No. WO2022/135824, PCT Pub. Date Jun. 30, 2022.
Claims priority of application No. 20216013 (EP), filed on Dec. 21, 2020.
Prior Publication US 2023/0396725 A1, Dec. 7, 2023
Int. Cl. H04N 1/60 (2006.01); G06F 3/12 (2006.01); H04N 1/00 (2006.01)
CPC H04N 1/6013 (2013.01) [G06F 3/1208 (2013.01); H04N 1/00665 (2013.01); H04N 1/6044 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method for printing a paper web with at least one print motif by a digital printing facility, comprising:
providing a digital image of a master sample of the print motif,
printing a plurality of copies of a section of the at least one print motif with different color settings,
creating digital images of the printed copies, the digital images and the master sample of the print motif comprising a same motif,
comparing the digital images of the printed copies with the digital image of the master sample, wherein a degree of similarity is determined in each case,
selecting color settings using a highest similarity of the digital images of the printed copies with the digital image of the master sample based on the determined degrees of similarity, and
printing the print motif onto the paper web with the selected color settings.