公开(公告)号：US12152152B2

公开(公告)日：2024-11-26

申请号：US16894517

申请日：2020-06-05

Applicant: VIAVI SOLUTIONS INC.

Inventor： Vladimir P. Raksha ,  Cornelis Jan Delst

IPC: C09C1/00 ,  B41M3/14 ,  B42D25/29 ,  C09D11/037

Abstract: A flake including a layer of a diamagnetic material; and at least one additional layer is disclosed. The flake, such as a plurality of flakes, can be dispersed in a liquid medium to form a composition. The composition can be applied to a surface of a substrate to form a security device. A method of making the security device is also disclosed.

公开(公告)号：US11230127B2

公开(公告)日：2022-01-25

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 ,  B05D5/06 ,  B41F11/02 ,  B41M3/14 ,  B41M5/00 ,  B42D25/29 ,  B41M3/00 ,  B41F23/00 ,  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：US20190299691A1

公开(公告)日：2019-10-03

申请号：US16434990

申请日：2019-06-07

Applicant: VIAVI SOLUTIONS INC.

Inventor： Vladimir P. Raksha ,  Paul G. Coombs ,  Charles T. Markantes

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

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：US10189997B2

公开(公告)日：2019-01-29

申请号：US15790854

申请日：2017-10-23

Applicant: Viavi Solutions Inc.

Inventor： Cornelis Jan Delst ,  Vladimir P. Raksha ,  David de la Fuente

IPC: C09C1/00 ,  C09C3/04 ,  C09C1/62 ,  C09C1/22

Abstract: A colorant including a mixture of pigments is disclosed. The pigments have a similar coloration but different resistance to corrosion. The mixing ratio is selected to optimize the corrosion resistance against color brightness, and/or acidic corrosion resistance against alkali corrosion resistance of the colorant.

公开(公告)号：US09845398B2

公开(公告)日：2017-12-19

申请号：US15296863

申请日：2016-10-18

Applicant: VIAVI SOLUTIONS INC.

Inventor： Vladimir P. Raksha ,  Paul T. Kohlmann ,  Cornelis Jan Delst ,  Paul G. Coombs

IPC: C09D7/12 ,  C09C1/00 ,  C09D17/00 ,  C09D11/037 ,  H01F1/03 ,  H01F1/01 ,  H01F1/28 ,  C09D5/32 ,  H01F1/26

CPC classification number: C09D7/62 ,  C01P2004/54 ,  C01P2004/61 ,  C01P2006/42 ,  C01P2006/60 ,  C09C1/0015 ,  C09C2200/1054 ,  C09C2210/00 ,  C09D5/32 ,  C09D7/70 ,  C09D11/037 ,  C09D17/004 ,  H01F1/01 ,  H01F1/0306 ,  H01F1/26 ,  H01F1/28

Abstract: The present invention provides a magnetic multilayer pigment flake and a magnetic coating composition that are relatively safe for human health and the environment. The pigment flake includes one or more magnetic layers of a magnetic alloy and one or more dielectric layers of a dielectric material. The magnetic alloy is an iron-chromium alloy or an iron-chromium-aluminum alloy, having a substantially nickel-free composition. The coating composition includes a plurality of the pigment flakes disposed in a binder medium.

公开(公告)号：US20160187546A1

公开(公告)日：2016-06-30

申请号：US14986293

申请日：2015-12-31

Applicant: Viavi Solutions Inc.

Inventor： Vladimir P. Raksha ,  Paul G. Coombs ,  Charles T. Markantes ,  Alberto Argoitia ,  Roger W. Phillips

IPC: G02B5/09 ,  B42D25/369 ,  G02B27/00

CPC classification number: B42D25/369 ,  B05D3/207 ,  B41M3/148 ,  B42D25/29 ,  B42D2033/16 ,  B42D2035/20 ,  G02B5/09 ,  G02B26/026 ,  G02B27/0025 ,  G09F3/0376 ,  Y10T428/24802 ,  Y10T428/25

Abstract: A printed image is disclosed wherein the image may be in the form of an array of magnetically aligned platelets or flakes that may by uniform in shape and size and wherein the flakes are arranged in a particularly manner to form optically illusive images useful as security devices, or useful in beam steering applications. In one embodiment of this invention printed array is disclosed a plurality of concentric rings of magnetically aligned platelets disposed upon a substrate in the form of a Fresnel structure, preferably a Fresnel reflector. Advantageously, since the magnetic field can be controlled with respect to strength and direction, one can easily design a field that will correct for spherical aberration that would otherwise be present in a typical Fresnel reflector. In other embodiments of the invention optically illusive images of funnels, domes and cones are printed.

公开(公告)号：US12138655B2

公开(公告)日：2024-11-12

申请号：US17444685

申请日：2021-08-09

Applicant: VIAVI Solutions Inc.

Inventor： Vladimir P. Raksha ,  Curtis R. Hruska ,  Neil Teitelbaum

IPC: B05D3/00 ,  B05C9/12 ,  B05D3/06 ,  B41J2/44 ,  B41J2/475 ,  B41J11/00 ,  B41M3/14 ,  G03G15/20 ,  G03G19/00

Abstract: A scanning laser having a wavelength compatible with a coating binder so as to cure it as the laser scans and irradiates the coating on a moving web. A system and method for curing flakes by providing a scanning laser which scans across a moving coated substrate in a magnetic field allows images to be formed as magnetically aligned flakes are cured into a fixed position. The images have regions of cured aligned flakes. The scanning laser cures the magnetically aligned flakes within it region it irradiates. Alternatively an array of lasers can be used wherein individual lasers can be switched on and off to fix irradiated coating as a moving web is moved at a high speed.

公开(公告)号：US11554603B2

公开(公告)日：2023-01-17

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: B42D25/36 ,  B42D25/369 ,  G02B5/09 ,  B42D25/378 ,  B42D25/373 ,  B42D25/425 ,  B42D25/29

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：US10981410B2

公开(公告)日：2021-04-20

申请号：US16845214

申请日：2020-04-10

Applicant: VIAVI Solutions Inc.

Inventor： Cornelis Jan Delst ,  Vladimir P. Raksha ,  Paul G. Coombs ,  Robert B. Sargent ,  Michael Ray Nofi

IPC: B42D25/36 ,  B42D25/369 ,  G02B5/09 ,  B42D25/378 ,  B42D25/373 ,  B42D25/425 ,  B42D25/29

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：US10479901B2

公开(公告)日：2019-11-19

申请号：US15812824

申请日：2017-11-14

Applicant: VIAVI SOLUTIONS INC.

Inventor： Vladimir P. Raksha ,  Paul T. Kohlmann ,  Cornelis Jan Delst ,  Paul G. Coombs

IPC: H01F1/01 ,  C09D17/00 ,  C09D11/037 ,  C09D5/32 ,  C09D7/62 ,  C09C1/00 ,  H01F1/28 ,  H01F1/03 ,  C09D7/40 ,  H01F1/26

Abstract: The present invention provides a magnetic multilayer pigment flake and a magnetic coating composition that are relatively safe for human health and the environment. The pigment flake includes one or more magnetic layers of a magnetic alloy and one or more dielectric layers of a dielectric material. The magnetic alloy is an iron-chromium alloy or an iron-chromium-aluminum alloy, having a substantially nickel-free composition. The coating composition includes a plurality of the pigment flakes disposed in a binder medium.