Patents by Inventor Charles T. Markantes
Charles T. Markantes has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9257059Abstract: A device includes a substrate and at least 1,000 flakes resting upon the substrate, each flake including a magnetic layer. The plurality of flakes are aligned so as to form a plurality of rings or curves, wherein within each ring or curve, flakes are tilted at a same angle with respect to the substrate and planes extending from surfaces of said flakes intersect with one another. The device provides a visible image of a single ring or curve when illuminated with a single light source, and three rings or curves are visible when three light sources illuminate the device. The device may be used as a printed light detector.Type: GrantFiled: November 29, 2012Date of Patent: February 9, 2016Assignee: VIAVI SOLUTIONS INC.Inventors: Vladimir P. Raksha, Paul G. Coombs, Charles T. Markantes, Alberto Argoitia, Roger W. Phillips
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Publication number: 20150217307Abstract: 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.Type: ApplicationFiled: April 8, 2015Publication date: August 6, 2015Applicant: JDS Uniphase CorporationInventors: Vladimir P. RAKSHA, Paul G. COOMBS, Charles T. MARKANTES
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Publication number: 20150138641Abstract: A method of providing a configuration of a system of interference filters with a visible color shifting effect, includes: a hue matching step of identifying a configuration of a first interference filter including two first metal layers and a first spacer layer therebetween, and a configuration of a second interference filter including two second metal layers and a second spacer layer therebetween, wherein the first and second filters match in hue at the first viewing angle, and the mismatch in hue at the second angle; and a lightness adjustment step which may include modifying the layer material or the layer thickness of one of the metal layers; wherein a difference in lightness at the first viewing angle between the first and second modified filters is less that a difference in lightness at the first viewing angle between the first and second filters.Type: ApplicationFiled: November 18, 2014Publication date: May 21, 2015Inventors: Cornelis Jan Delst, Matthew R. WITZMAN, Paul T. KOHLMANN, Charles T. MARKANTES
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Patent number: 9027479Abstract: 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.Type: GrantFiled: October 6, 2009Date of Patent: May 12, 2015Assignee: JDS Uniphase CorporationInventors: Vladimir P. Raksha, Paul G. Coombs, Charles T. Markantes
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Publication number: 20140362443Abstract: In a plurality of asymmetric color-shifting flakes, each flake has an asymmetric magnetic core with a magnetic layer visible on the first side of the core and a non-magnetic reflector layer on the magnetic layer, visible on the second side of the core. The flake has a spacer layer and an absorber layer on the first side of the core, and also a spacer layer and an absorber layer on the second side of the core, for providing color shifting effects. The material of the magnetic layer is different from the material of the reflector layer, and may be more stable when exposed to a chemical. When a coating with the asymmetric color-shifting flakes is exposed to the chemical, it may have better optical performance than a coating with symmetric color-shifting flakes.Type: ApplicationFiled: June 10, 2014Publication date: December 11, 2014Inventors: Charles T. MARKANTES, Cornelis Jan Delst, Vladimir P. Raksha, David de la Fuente, Paul G. Coombs
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Patent number: 8726806Abstract: A printing apparatus includes a magnetic rotatable roller with a smooth even outer surface for aligning magnetic flakes in a carrier, such as an ink vehicle or a paint vehicle to create optically variable images in a high-speed, linear printing operation. Images can provide security features on high-value documents, such as bank notes. Magnetic flakes in the ink are aligned using magnetic portions of the roller, that can be formed by permanent magnets embedded in a non-magnetic roller body, or selectively magnetized portions of a flexible magnetic cover of the roller. In some embodiments, the roller is assembled for a plurality of interchangeable sections, which can include spinning magnets. Selected orientation of the magnetic pigment flakes can achieve a variety of illusive optical effects that are useful for decorative or security applications.Type: GrantFiled: September 26, 2012Date of Patent: May 20, 2014Assignee: JDS Uniphase CorporationInventors: Vladimir P. Raksha, Jay M. Holman, Paul G. Coombs, Charles T. Markantes, Roger W. Phillips
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Patent number: 8511712Abstract: Pigment flakes are blended together wherein some are magnetically alignable and exhibit a color shift from a first color to a second color with a change in viewing angle; and some are pigment flakes which exhibit a color shift from the first color to a third color or vice versa with a change in viewing angle, wherein the first, second and third colors are three different colors. The flakes are coated upon a substrate and magnetically alignable flakes are magnetically aligned. The non-magnetically alignable flakes are not aligned by the magnetic field and lie flat upon the substrate they are coated on. By judiciously selecting the angle upon which the magnetic flakes are oriented, an effect is created whereby an observer sees a color shift from a first color to a second or a first color to a third, when orienting the substrate by tilting it at different particular angles. The coated substrate can be used in security applications such as on currency or secure instruments.Type: GrantFiled: June 30, 2010Date of Patent: August 20, 2013Assignee: JDS Uniphase CorporationInventors: Vladimir P. Raksha, Michael R. Nofi, Charles T. Markantes, Paul G. Coombs
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Publication number: 20130087060Abstract: A printing apparatus includes a magnetic rotatable roller with a smooth even outer surface for aligning magnetic flakes in a carrier, such as an ink vehicle or a paint vehicle to create optically variable images in a high-speed, linear printing operation. Images can provide security features on high-value documents, such as bank notes. Magnetic flakes in the ink are aligned using magnetic portions of the roller, that can be formed by permanent magnets embedded in a non-magnetic roller body, or selectively magnetized portions of a flexible magnetic cover of the roller. In some embodiments, the roller is assembled for a plurality of interchangeable sections, which can include spinning magnets. Selected orientation of the magnetic pigment flakes can achieve a variety of illusive optical effects that are useful for decorative or security applications.Type: ApplicationFiled: September 26, 2012Publication date: April 11, 2013Inventors: Vladimir P. Raksha, Jay M. Holman, Paul G. Coombs, Charles T. Markantes, Roger W. Phillips
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Publication number: 20130084411Abstract: A device includes a substrate and at least 1,000 flakes resting upon the substrate, each flake including a magnetic layer. The plurality of flakes are aligned so as to form a plurality of rings or curves, wherein within each ring or curve, flakes are tilted at a same angle with respect to the substrate and planes extending from surfaces of said flakes intersect with one another. The device provides a visible image of a single ring or curve when illuminated with a single light source, and three rings or curves are visible when three light sources illuminate the device. The device may be used as a printed light detector.Type: ApplicationFiled: November 29, 2012Publication date: April 4, 2013Inventors: Vladimir P. RAKSHA, Paul G. Coombs, Charles T. Markantes, Alberto Argoitia, Roger W. Phillips
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Patent number: 8343615Abstract: 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.Type: GrantFiled: April 4, 2006Date of Patent: January 1, 2013Assignee: JDS Uniphase CorporationInventors: Vladimir P. Raksha, Paul G. Coombs, Charles T. Markantes, Alberto Argoitia, Roger W. Phillips
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Patent number: 8287989Abstract: A security image is disclosed which is formed from flakes having a first color with flakes having a second different color mixed within a carrier uniformly. The flakes having the second color are magnetically orientable and the flakes having the first color are non-magnetic and do not align or orient in a magnetic field. By exposing at least a single coated region to a magnetic field that is substantially orthogonal to the substrate upon which the coating of flakes is coated, a visible region having the first color is provided as the magnetic flakes are upstanding and the non-magnetic flakes are lying flat upon the substrate. In another region where there is no field applied a visible region having third perceived color different from, however formed from the first color or the second color is seen.Type: GrantFiled: April 10, 2007Date of Patent: October 16, 2012Assignee: JDS Uniphase CorporationInventors: Vladimir P. Raksha, Roger W. Phillips, Charles T. Markantes, Paul G. Coombs
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Patent number: 8276511Abstract: A printing apparatus includes a magnetic rotatable roller with a smooth even outer surface for aligning magnetic flakes in a carrier, such as an ink vehicle or a paint vehicle to create optically variable images in a high-speed, linear printing operation. Images can provide security features on high-value documents, such as bank notes. Magnetic flakes in the ink are aligned using magnetic portions of the roller, that can be formed by permanent magnets embedded in a non-magnetic roller body, or selectively magnetized portions of a flexible magnetic cover of the roller. In some embodiments, the roller is assembled for a plurality of interchangeable sections, which can include spinning magnets. Selected orientation of the magnetic pigment flakes can achieve a variety of illusive optical effects that are useful for decorative or security applications.Type: GrantFiled: March 28, 2011Date of Patent: October 2, 2012Assignee: JDS Uniphase CorporationInventors: Vladimir P. Raksha, Jay M. Holman, Paul G. Coombs, Charles T. Markantes, Roger W. Phillips
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Patent number: 8211509Abstract: A method and apparatus is provided for printing using paste like inks such as those used in intaglio printing, wherein the inks include specialty flakes such as thin film optically variable flakes, or diffractive flakes. The invention discloses an apparatus having an energy source such as a heat source for temporarily lessening the viscosity of the ink during alignment of the flakes within the ink.Type: GrantFiled: October 18, 2005Date of Patent: July 3, 2012Inventors: Vladimir P. Raksha, Dishuan Chu, Thomas Mayer, Charles T. Markantes, Paul G. Coombs
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Patent number: 8137762Abstract: A method of planarizing a plurality of orientable non-spherical flakes supported by a longitudinal web is disclosed. A web supporting a coating of field orientable non-spherical flakes is placed between magnets so that the fields from the magnets traverse the web. First and third magnets are provided on one side of a feedpath and a second magnet is provided between the first and third magnets on the other side of the feedpath.Type: GrantFiled: August 17, 2009Date of Patent: March 20, 2012Inventors: Vladimir P. Raksha, Paul G. Coombs, Charles T. Markantes, Wilfred C. Kittler, Jr., Dave Williams, John D. Sonderman, Cornelis Jan Delst
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Patent number: 8025952Abstract: A security image and method of forming said image is disclosed wherein a substrate having an image or indicia thereon is coated with a dilute solution of pigment flakes in an ink or paint. The flakes are subsequently aligned in a magnetic field and are fixed after the field is applied. Most or all of the flakes in a region are aligned so as to be partially upstanding wherein their faces are essentially parallel. Coating the image with flakes yields a latent image which can be clearly seen at a small range of predetermined angles.Type: GrantFiled: October 30, 2007Date of Patent: September 27, 2011Assignee: JDS Uniphase CorporationInventors: Vladimir P. Raksha, Cornelis Jan Delst, Paul G. Coombs, Charles T. Markantes, Alberto Argoitia
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Publication number: 20110168088Abstract: A printing apparatus includes a magnetic rotatable roller with a smooth even outer surface for aligning magnetic flakes in a carrier, such as an ink vehicle or a paint vehicle to create optically variable images in a high-speed, linear printing operation. Images can provide security features on high-value documents, such as bank notes. Magnetic flakes in the ink are aligned using magnetic portions of the roller, that can be formed by permanent magnets embedded in a non-magnetic roller body, or selectively magnetized portions of a flexible magnetic cover of the roller. In some embodiments, the roller is assembled for a plurality of interchangeable sections, which can include spinning magnets. Selected orientation of the magnetic pigment flakes can achieve a variety of illusive optical effects that are useful for decorative or security applications.Type: ApplicationFiled: March 28, 2011Publication date: July 14, 2011Applicant: JDS Uniphase CorporationInventors: Vladimir P. Raksha, Jay M. Holman, Paul G. Coombs, Charles T. Markantes, Roger W. Phillips
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Publication number: 20110121556Abstract: Pigment flakes are blended together wherein some are magnetically alignable and exhibit a color shift from a first color to a second color with a change in viewing angle; and some are pigment flakes which exhibit a color shift from the first color to a third color or vice versa with a change in viewing angle, wherein the first, second and third colors are three different colors. The flakes are coated upon a substrate and magnetically alignable flakes are magnetically aligned. The non-magnetically alignable flakes are not aligned by the magnetic field and lie flat upon the substrate they are coated on. By judiciously selecting the angle upon which the magnetic flakes are oriented, an effect is created whereby an observer sees a color shift from a first color to a second or a first color to a third, when orienting the substrate by tilting it at different particular angles. The coated substrate can be used in security applications such as on currency or secure instruments.Type: ApplicationFiled: June 30, 2010Publication date: May 26, 2011Applicant: JDS Uniphase CorporationInventors: Vladimir P. Raksha, Michael R. Nofi, Charles T. Markantes, Paul G. Coombs
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Patent number: 7934451Abstract: A printing apparatus includes a magnetic rotatable roller with a smooth even outer surface for aligning magnetic flakes in a carrier, such as an ink vehicle or a paint vehicle to create optically variable images in a high-speed, linear printing operation. Images can provide security features on high-value documents, such as bank notes. Magnetic flakes in the ink are aligned using magnetic portions of the roller, that can be formed by permanent magnets embedded in a non-magnetic roller body, or selectively magnetized portions of a flexible magnetic cover of the roller. In some embodiments, the roller is assembled for a plurality of interchangeable sections, which can include spinning magnets. Selected orientation of the magnetic pigment flakes can achieve a variety of illusive optical effects that are useful for decorative or security applications.Type: GrantFiled: January 15, 2007Date of Patent: May 3, 2011Assignee: JDS Uniphase CorporationInventors: Vladimir P. Raksha, Jay M. Holman, Paul G. Coombs, Charles T. Markantes, Roger W. Phillips
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Publication number: 20100208351Abstract: A method of conforming non-ductile flakes to a surface is provided wherein a surface is coated with the non-ductile flakes. A first step of coating at least a portion of the surface with a coating of adhesive or a paint is required and subsequently before the coating cures a plurality of thin film flakes having a non-ductile insulating or semiconductor layer are sprinkled upon the adhesive or paint while it is still tacky. Typically the thin-film flakes have a thickness of between 50 nm and 2,000 nm, and have a length of between 2 microns and 200 microns. The flakes having a non-ductile layer are then burnished upon the surface so as to provide an active layer, which conforms to the surface.Type: ApplicationFiled: March 18, 2010Publication date: August 19, 2010Inventors: Michael R. NOFI, Patrick Laden, Charles T. Markantes, Wilfred C. Kittler, JR., Paul G. Coombs
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Patent number: RE45762Abstract: A security image and method of forming said image is disclosed wherein a substrate having an image or indicia thereon is coated with a dilute solution of pigment flakes in an ink or paint. The flakes are subsequently aligned in a magnetic field and are fixed after the field is applied. Most or all of the flakes in a region are aligned so as to be partially upstanding wherein their faces are essentially parallel. Coating the image with flakes yields a latent image which can be clearly seen at a small range of predetermined angles.Type: GrantFiled: September 26, 2013Date of Patent: October 20, 2015Assignee: JDS Uniphase CorporationInventors: Vladimir P. Raksha, Cornelis Jan Delst, Paul G. Coombs, Charles T. Markantes, Alberto Argoitia