CYLINDER FOR ALIGNING MAGNETIC OR MAGNETIZABLE PARTICLES CONTAINED IN COATING AGENT ON A SUBSTRATE AND MACHINE FOR GENERATING OPTICALLY VARIABLE IMAGE ELEMENTS
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United States of America
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Issued Date -
Apr 3, 2025
app pub date -
Dec 22, 2022
filing date -
Dec 22, 2022
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Abstract
Examples include a cylinder for aligning magnetic or magnetizable particles contained in a coating agent on a substrate. In the region of the outer circumference of the cylinder, in a matrix-like manner, a number of magnetic elements that provide magnetic fields are arranged in n rows extending in an axially parallel manner and in m columns extending in the circumferential direction. Additionally, suction elements with suction openings pointing outwards are also arranged in the circumferential region. A plurality or all of the magnetic elements are arranged one behind the other and are each combined with at least one assigned suction element in respective modular units as action units in a plurality or all of the columns of magnetic elements. The action units can be positioned in each case independently of the other action units in the circumferential direction and/or can be detached from the cylinder.
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