公开(公告)号：US20220282094A1

公开(公告)日：2022-09-08

申请号：US17192553

申请日：2021-03-04

Applicant: VIAVI SOLUTIONS INC.

Inventor： Vladimir P. RAKSHA ,  Cornelis Jan DELST ,  Paul Thomas KOHLMANN

IPC: C09C1/36 ,  C23C14/24

Abstract: A pigment, including a magnetizable reflector layer including an intermetallic compound, wherein the intermetallic compound is a crystal structure of at least two different elemental metals chemically bonded together is disclosed. A pigment, including a semi-transparent absorber layer including an intermetallic compound, wherein the intermetallic compound is a crystal structure of at least two different elemental metals chemically bonded together is disclosed. A method of making the pigment is also disclosed.

公开(公告)号：US20220063319A1

公开(公告)日：2022-03-03

申请号：US17523660

申请日：2021-11-10

Applicant: VIAVI SOLUTIONS INC.

Inventor： Vladimir P. RAKSHA ,  John HYNES ,  Laurence HOLDEN ,  Paul G. COOMBS

IPC: B42D25/369 ,  B44F1/10 ,  B42D25/342 ,  B42D25/41 ,  B42D25/378 ,  B05D3/00 ,  B05D5/06 ,  C09D5/29 ,  C09D5/36 ,  B41M3/14 ,  C09D11/00 ,  B41M7/00 ,  C09D7/61 ,  B44F1/02 ,  B42D25/29 ,  H01F41/02 ,  B42D25/00

Abstract: In a printed article, pigment flakes are magnetically aligned so as to form curved patterns in a plurality of cross-sections normal a continuous imaginary line, wherein radii of the curved patterns increase along the imaginary line from the first point to the second point. When light is incident upon the aligned pigment Hakes from a light source, light reflected from the aligned pattern forms a bright image which appears to gradually change its shape and move from one side of the continuous imaginary line to another side of the continuous imaginary line when the substrate is tilted with respect to the light source.

公开(公告)号：US20200338922A1

公开(公告)日：2020-10-29

申请号：US16857845

申请日：2020-04-24

Applicant: VIAVI SOLUTIONS INC.

Inventor： Vladimir P. RAKSHA ,  Cornells Jan Delst ,  Paul G. Coombs

IPC: B42D25/369 ,  B42D25/328

Abstract: An optical device comprising a structured substrate; a reflective layer on the structured substrate; and a coating with magnetic flakes on the reflective layer is disclosed. A method of making and using an optical device is also disclosed.

公开(公告)号：US20190023043A1

公开(公告)日：2019-01-24

申请号：US16113977

申请日：2018-08-27

Applicant: VIAVI Solutions Inc.

Inventor： Vladimir P. RAKSHA ,  Paul G. COOMBS ,  Charles T. MARKANTES

IPC: B41M1/00 ,  B05D3/00 ,  B05B7/02 ,  B41F23/00 ,  B05B5/00 ,  B42D25/29 ,  B41M5/00 ,  B41M3/14 ,  B41M3/00 ,  B41F11/02 ,  B05D5/06 ,  B42D25/369

Abstract: The invention relates to a method of aligning magnetic flakes, which includes: coating a substrate with a carrier having the flakes dispersed therein, moving the substrate in a magnetic field so as to align the flakes along force lines of the magnetic field in the absence of an effect from a solidifying means, and at least partially solidifying the carrier using a solidifying means while further moving the substrate in the magnetic field so as to secure the magnetic flakes in the carrier while the magnetic field maintains alignment of the magnetic flakes. An apparatus is provided, which has a belt for moving a substrate along a magnet assembly for aligning magnetic flakes. The apparatus also includes a solidifying means, such as a UV- or e-beam source, and a cover above a portion of the magnet assembly for protecting the flakes from the effect of the solidifying means.

公开(公告)号：US20240042787A1

公开(公告)日：2024-02-08

申请号：US18488258

申请日：2023-10-17

Applicant: VIAVI Solutions Inc.

Inventor： Vladimir P. RAKSHA ,  Cornelis Jan DELST

IPC: B42D25/369 ,  B42D25/378 ,  B42D25/41 ,  B41M3/14

CPC classification number: B42D25/369 ,  B42D25/378 ,  B42D25/41 ,  B41M3/148 ,  B42D25/23

Abstract: A security article may include a substrate. The security article may include a layer of security ink. The layer of security ink may include a set of color-shifting interference particles. The security article may include a layer of magnetic color-shifting ink. The layer of magnetic color-shifting ink may include a set of magnetically aligned magnetic particles. A color-shifting property of the layer of security ink and a color-shifting property of the layer of magnetic color-shifting ink may have a threshold level of similarity to create a color matching effect.

公开(公告)号：US20230038496A1

公开(公告)日：2023-02-09

申请号：US17972501

申请日：2022-10-24

Applicant: VIAVI SOLUTIONS INC.

Inventor： Vladimir P. RAKSHA ,  Paul G. COOMBS ,  Charles T. MARKANTES

IPC: B41M3/14 ,  B42D25/378 ,  B42D25/29

Abstract: A security device is disclosed that has an image formed upon a substrate. The image has a first printed region and a second different printed region both printed with a same ink formulation of field alignable flakes. At least one of the printed regions has optically variable effects. One of the first and second printed regions at least partially surrounds the other. The second printed region is formed of thin parallel lines and the first printed region has substantially wider lines than are printed in the second printed region. The area density of the ink in a line in the first group of wider lines is greater than the area density of a line in the second group of narrower lines. A surprising effect of this image is that particles or flakes in the ink are field aligned so as to produce a visible kinematic dynamic effect visible in the first region and not visible in the second region when the image is tilted or rotated.

公开(公告)号：US20220396088A1

公开(公告)日：2022-12-15

申请号：US17839013

申请日：2022-06-13

Applicant: VIAVI SOLUTIONS INC.

Inventor： Vladimir P. RAKSHA ,  Cornelis Jan DELST

IPC: B42D25/369 ,  B42D25/40

Abstract: An assembly including a first magnet; a substrate positioned above the first magnet, and having a surface for receiving a composition including a plurality of magnetizable platelets; and a second magnet, positioned above the substrate is disclosed. The assembly can be used in a method of making an optical security element. The optical security element and the method of making the optical security element are also disclosed.

公开(公告)号：US20220143997A1

公开(公告)日：2022-05-12

申请号：US17583404

申请日：2022-01-25

Applicant: VIAVI Solutions Inc.

Inventor： Vladimir P. RAKSHA ,  Cornelis Jan DELST

IPC: B41M3/14 ,  B42D25/369 ,  B42D25/378 ,  B41M7/00 ,  B41M1/12

Abstract: A security article may include a substrate. The security article may include a layer of security ink. The layer of security ink may include a set of color-shifting interference particles. The security article may include a layer of magnetic color-shifting ink. The layer of magnetic color-shifting ink may include a set of magnetically aligned magnetic particles. A color-shifting property of the layer of security ink and a color-shifting property of the layer of magnetic color-shifting ink may have a threshold level of similarity to create a color matching effect.

公开(公告)号：US20210252902A1

公开(公告)日：2021-08-19

申请号：US17301810

申请日：2021-04-15

Applicant: VIAVI Solutions Inc.

Inventor： Cornelis Jan DELST ,  Vladimir P. RAKSHA ,  Paul G. COOMBS ,  Robert B. SARGENT ,  Michael Ray NOFI

IPC: B42D25/369 ,  G02B5/09 ,  B42D25/378 ,  B42D25/373 ,  B42D25/425

Abstract: The disclosure relates to an optical security feature that is based on a single axis alignment of mirrors or facets in a structured surface that forms a micro mirror array. In an aspect, a device is described that includes a reflecting structure on a first layer, where the reflecting structure has a top surface with multiple embossed facets arranged in a spatial orientation that produces a flat ring optical effect upon incidence of light. In another aspect, a method for making the device is described that provides a reflecting layer and produces the reflecting structure on the reflecting layer with multiple facets arranged in the spatial orientation to produce the flat ring optical effect. In yet another aspect, an apparatus for making the device is described that includes a pressing device and a stamping device to transfer a pattern of the reflecting structure to a reflecting material.

公开(公告)号：US20200257235A1

公开(公告)日：2020-08-13

申请号：US16862729

申请日：2020-04-30

Applicant: VIAVI Solutions Inc.

Inventor： Vladimir P. RAKSHA ,  Cornelis Jan Delst

IPC: G03G21/04 ,  B41M3/14 ,  G07D7/12

Abstract: An optical article printed on a substrate may include an organic binder; and a plurality of reflective magnetic platelets provided in the organic binder, wherein the plurality of reflective magnetic platelets are substantially aligned in accordance with at least part of a surface of revolution, and wherein the plurality of reflective magnetic platelets are aligned to cause a first reflective effect of the optical article when the substrate is rotated around a first axis and to cause a second reflective effect of the optical article when the substrate is rotated around a second axis, wherein the first reflective effect is different from the second reflective effect.