US 11,919,290 B2
Device for aligning magnetic or magnetizable particles and machine for generating optically variable image elements
Eugen Beck, Oberthulba (DE); Edwin Kreps, Zellingen (DE); and Björn Kriege, Veitshöchheim (DE)
Assigned to KOENIG & BAUER AG, Würzburg (DE)
Appl. No. 18/278,032
Filed by KOENIG & BAUER AG, Würzburg (DE)
PCT Filed Mar. 31, 2022, PCT No. PCT/EP2022/058603
§ 371(c)(1), (2) Date Aug. 21, 2023,
PCT Pub. No. WO2022/228822, PCT Pub. Date Nov. 3, 2022.
Claims priority of application No. 10 2021 110 864.0 (DE), filed on Apr. 28, 2021.
Prior Publication US 2024/0034052 A1, Feb. 1, 2024
Int. Cl. B41F 27/02 (2006.01); B41F 13/10 (2006.01); B41F 13/20 (2006.01); B41F 19/00 (2006.01)
CPC B41F 27/02 (2013.01) [B41F 13/10 (2013.01); B41F 13/20 (2013.01); B41F 19/005 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A device for aligning magnetic or magnetizable particles (P) contained in a coating agent (06), comprising a cylinder (26), which comprises a number of n×m (in words: n times m, where n, m 0 ┐) elements (24) providing magnetic fields, magnetic elements (24) for short, in the region of its outer circumference in a matrix-like manner, which are arranged one behind the other in m columns extending in the circumferential direction of the cylinder (26) and next to one another in n rows extending in an axially parallel manner, in several of the columns of magnetic elements (24) arranged one behind the other in the circumferential direction in each case the magnetic elements (24) of these columns being mounted as a group at or on a shared carrier element (31) and being variable with respect to their axial position in or at the cylinder (26) by way of the carrier element (31), collectively as a group and independently of the magnetic elements (24) of an adjoining column, and, in these columns, in each case at least one of the magnetic elements (24) being arranged and/or mounted on the carrier element (31) of a multi-piece cylinder body (29) of the cylinder (26) so as to be adjustable in the axial direction, by way of mechanical adjusting means (42, 43, 44) comprising a gearbox, independently of at least one further magnetic element (24) of the same column which is mounted on the same carrier element (31).