Patent · US Active

Devices for aligning magnetic or magnetizable particles, machine, and method for producing optically variable image elements

US11072164B2 · kind B2 · utility

0Cited by

2References

14Claims

0Family size

Assignee

KOENIG & BAUER AG · DE

Inventors

Andreas Jantsch · Veitshöchheim, DE
Edwin Kreps · Zellingen, DE
Michael Scheller · Unterpleichfeld, DE

Key dates

Filing date	May 17, 2019
Grant date	Jul 27, 2021
Priority date	—
Expiry date	May 17, 2039

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB41P2213/91
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

Devices are provided for aligning magnetic or magnetizable particles, which particles are contained in a coating that is applied on one side of a substrate, which substrate is in the form of a web or sheet. The device has a magnet cylinder, which is arranged in a transport path of the substrate to be conveyed and, in a region of the outer circumference of the magnet cylinder, the device has a plurality of devices for effecting a magnetic field, or magnet devices for short. Some or all of the magnet devices comprise a magnet which is rotatable by an associated motor. The magnet cylinder is rotatably arranged in frame walls of a frame. At least one transducer for contactless transfer of electrical energy or control signals from the outside is provided in or on the rotating magnet cylinder, which comprises a first transducer part fixed to the frame and a second transducer part fixed to the cylinder during operation.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.