US 12,291,017 B2
Cylinder for aligning magnetic or magnetizable particles contained in coating agent on a substrate and machine for generating optically variable image elements
Tobias Diehm, Wertheim (DE); Michael Müller, Karlstadt (DE); and Emmanuel Thony, Rennaz (CH)
Assigned to KOENIG & BAUER AG, Würzburg (DE)
Appl. No. 18/837,966
Filed by KOENIG & BAUER AG, Würzburg (DE)
PCT Filed Dec. 22, 2022, PCT No. PCT/EP2022/087516
§ 371(c)(1), (2) Date Aug. 13, 2024,
PCT Pub. No. WO2023/198302, PCT Pub. Date Oct. 19, 2023.
Claims priority of application No. 10 2022 109 038.8 (DE), filed on Apr. 13, 2022; and application No. 10 2022 114 900.5 (DE), filed on Jun. 14, 2022.
Prior Publication US 2025/0108596 A1, Apr. 3, 2025
Int. Cl. B41F 13/08 (2006.01); B05D 3/00 (2006.01); B41F 15/08 (2006.01); B41F 11/02 (2006.01)
CPC B41F 13/08 (2013.01) [B05D 3/207 (2013.01); B41F 15/0809 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A cylinder (26) for aligning magnetic or magnetizable particles (P) contained in coating agent (06) on a substrate (02), which comprises, in a region of the outer circumference thereof in a matrix-like manner, a number of n×m (where n and m are integers >1) magnetic elements (24) that provide magnetic fields, and which are arranged in n rows extending in an axially parallel manner and in m columns extending in the circumferential direction, at least two or all magnetic elements (24) that are provided one behind the other in the same column 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, collectively and independently of the magnetic elements (24) of an adjoining column, characterized in that the at least two or all magnetic elements (24) of the same column are arranged at respective magnetic element carriers (37) which, in turn, are mounted at the shared carrier element (31) so as to be positionable at the shared carrier element (31) independently of one another in the circumferential direction and/or so as to be detachable from the carrier element (31), the at least two or all magnetic elements (24) of the same column being mounted on the respective magnetic element carrier (37) so as to be adjustable relative thereto in the axial direction within an adjustment range.