Article with curved patterns formed of aligned pigment flakes

• US 9,102,195 B2
• Filed: 01/09/2013
• Issued: 08/11/2015
• Est. Priority Date: 01/12/2012
• Status: Active Grant

• Current Assignee: Viavi Solutions, Inc. (Lumentum Holdings Inc.)
• Original Assignee: Viavi Solutions, Inc. (Lumentum Holdings Inc.)
• Inventors: Raksha, Vladimir P., Hynes, John, Holden, Laurence, Coombs, Paul G.
• Primary Examiner(s): Ahmed, Sheeba
• Application Number:
  US13/737,811
• Publication Number:
  US 20130189454A1
• Time in Patent Office: 944 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: B05D 3/207 post-treatment by magnetic fields
• CPC Class Codes: B05D 5/061 Special surface effect
• CPC Class Codes: B41M 3/14 Security printing securities B42D25/29
• CPC Class Codes: B41M 7/0072 using mechanical wave energy, e.g. ultrasonics; using magnetic or electric fields, e.g. electric discharge, plasma
• CPC Class Codes: B42D 25/00 Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof printing processes to produce identification or security features B41M3/14
• CPC Class Codes: B42D 25/29 Securities; Bank notes
• CPC Class Codes: B42D 25/342 Moiré effects
• CPC Class Codes: B42D 25/369 Magnetised or magnetisable materials
• CPC Class Codes: B42D 25/378 Special inks
• CPC Class Codes: B42D 25/41 using electromagnetic radiation B42D25/435 takes precedence
• CPC Class Codes: B44F 1/02 produced by reflected light, e.g. matt surfaces, lustrous surfaces
• CPC Class Codes: B44F 1/10 Changing, amusing, or secret pictures
• CPC Class Codes: C09D 11/00 Inks
• CPC Class Codes: C09D 5/29 for multicolour effects
• CPC Class Codes: C09D 5/36 Pearl essence, e.g. coatings containing platelet-like pigments for pearl lustre
• CPC Class Codes: C09D 7/61 inorganic
• CPC Class Codes: H01F 41/0253 for manufacturing permanent magnets

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 flakes 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.

Claims

1. An article comprising a substrate and a coating comprising pigment flakes, supported by the substrate;

wherein each of the pigment flakes includes a magnetic or magnetizable material for magnetic alignment of the pigment flakes, and the pigment flakes are aligned so as to form an aligned pattern wherein a portion of the pigment flakes are parallel to the substrate along a continuous imaginary line on a surface of the substrate between first and second points thereof, and the pigment flakes form curved patterns in a plurality of cross-sections normal the continuous imaginary line so that radii of the curved patterns increase along the imaginary line from the first point to the second point; and

,

wherein, when light is incident upon the pigment flakes 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.

2. The article as defined in claim 1, wherein the radii of the curved patterns decrease along the continuous imaginary line beyond the second point.

3. The article as defined in claim 2, further comprising an image comprising non-magnetic ink, under the coating comprising pigment flakes, wherein the bright image moves from one side to another side of the image.

4. The article as defined in claim 1, further comprising a background comprising non-magnetic ink, wherein the bright image moves relative to the background.

5. The article as defined in claim 1, wherein in one of the plurality cross-sections, angles that the pigment flakes form with the substrate increase from zero at the continuous imaginary line to 80 degrees on both sides of the continuous imaginary line.

6. The article as defined in claim 1, wherein the curved patterns are concave patterns.

7. The article as defined in claim 1, wherein the curved patterns are convex patterns.

8. An article comprising a substrate and a coating comprising pigment flakes, supported by the substrate;

wherein each of the pigment flakes includes a magnetic or magnetizable material for magnetic alignment of the pigment flakes, and the pigment flakes are aligned so as to form an aligned pattern wherein a portion of the pigment flakes are parallel to the substrate along a continuous imaginary line on a surface of the substrate between first and second points thereof, and the pigment flakes form curved patterns in a plurality of cross-sections normal the continuous imaginary line, and wherein the continuous imaginary line is a zigzag or wavy line between the first and second points; and

,

wherein, when light is incident upon the pigment flakes from a light source, light reflected from the image region forms a bright zigzag or wave which appears to move when the substrate is tilted with respect to the light source.

9. The article as defined in claim 8, wherein the bright zigzag includes at least three sections.

10. The article as defined in claim 8, wherein the pigment flakes are color-shifting flakes.

11. The article as defined in claim 8, wherein in one of the plurality cross-sections, angles that the pigment flakes form with the substrate increase from zero at the imaginary line to 80 degrees on both sides of the imaginary line.