Forgery/alteration protective material

• US 6,846,547 B2
• Filed: 06/29/2001
• Issued: 01/25/2005
• Est. Priority Date: 07/10/2000
• Status: Expired due to Fees

• Current Assignee: Shiseido Company Limited
• Original Assignee: Shiseido Company Limited
• Inventors: Wada, Masayoshi, Kimura, Asa
• Primary Examiner(s): Stein, Stephen
• Assistant Examiner(s): BLACKWELL, GWENDOLYN
• Application Number:
  US10/332,279
• Publication Number:
  US 20030138609A1
• Time in Patent Office: 1,306 Days
• Field of Search: 428/195, 428/323, 428/402, 428/402.24, 428/403, 428/913, 283/72, 283/94
• US Class Current: 428/195.1
• 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: G02B 5/128 transparent spheres being embedded in matrix
• CPC Class Codes: G02B 5/136 plural reflecting elements forming part of a unitary body G02B5/124 takes precedence
• CPC Class Codes: Y10T 428/24802 Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
• CPC Class Codes: Y10T 428/24868 Translucent outer layer
• CPC Class Codes: Y10T 428/24884 Translucent layer comprises natural oil, wax, resin, gum, glue, gelatin
• CPC Class Codes: Y10T 428/24901 including coloring matter
• CPC Class Codes: Y10T 428/25 Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
• CPC Class Codes: Y10T 428/2993 Silicic or refractory material containing [e.g., tungsten oxide, glass, cement, etc.]
• CPC Class Codes: Y10T 428/2995 Silane, siloxane or silicone coating
• CPC Class Codes: Y10T 428/2996 Glass particles or spheres
• CPC Class Codes: Y10T 428/2998 including synthetic resin or polymer

Abstract

The purpose of the invention is to provide a forgery/alteration protective material which containing a retroreflecting material and having an improved forgery/alteration protecting effect against the process of the upper part of the material.

In order to achieve the above purpose, the forgery/alteration protective material 2 according to the invention where a retroreflecting material 4 for returning the incident light substantially along the path along which the incident light travels is provided and a transparent film 6 is layered on the retroreflecting material 4 is characterized in that a low transmittance layer 8 formed of a material having a lowerer light transmittance than that of the transparent film 6 is provided between the retroreflecting material 4 and the transparent film layer 6, and the light transmittance of the low transmittance layer 8 is 45% or higher to the light in the wavelength range of 420 nm to 700 nm.

Claims

1. A forgery/alteration protective material comprising

a retroreflecting material for returning an incident light substantially along a path along which the incident light travels,

a transparent film that is layered on said retroreflecting material, and

a low transmittance layer between said retroreflecting material and said transparent film,

wherein said low transmittance layer is formed of a material having a lower light transmittance than that of said transparent film, and the light transmittance of said low transmittance layer is 45% or higher to a light in a wavelength range of 420 nm to 700 nm.

2. The forgery/alteration protective material as claimed in claim 1, wherein information such as letters and/or designed patterns by printing and/or a photograph is recorded between said retroreflecting material and said low transmittance layer or in said retroreflecting material.

3. The forgery/alteration protective material as claimed in claim 1, wherein said retroreflecting material is a color light retroreflecting material for turning color light with different color tone from that of the incident light in the proceeding direction of the incident light.

4. The forgery/alteration protective material as claimed in claim 1, wherein the material with a low light transmittance for forming said low transmittance layer is a material with a high light diffusibility as compared with that of said transparent film.

6. The forgery/alteration protective material as claimed in claim 1, wherein the material with a low light transmittance for forming the low transmittance layer is a material with a high light shielding property as compared with that of the transparent film.

7. The A forgery/alteration protective material as claimed in claim 6, wherein said material with a high light shielding property is an inorganic substance selected from titanium oxide, zinc oxide, iron oxide, or titanium oxide-coated mica or a metal selected from aluminum or gold.

8. A forgery/alteration protective material as claimed in claim 1, wherein said material is stuck to or integrally formed in a substrate of paper or a film or an article.

18. The forgery/alteration protective material according to claim 1, wherein said low transmittance layer is adapted to attach to said transparent film in a way such that a breaking of said low transmittance layer simultaneously coincides with a breaking and peeling of said transparent film.

19. The forgery/alteration protective material according to claim 1, wherein said retroreflecting material has an interfering substance layer which comprises a titanium dioxide-coated mica layer.

20. The forgery/alteration protective material according to claim 19, wherein said retroreflecting material further comprises a transparent small spherical body.

5. A forgery/alteration protective material comprising:

a retroreflecting material for returning an incident light substantially along a path along which the incident light travels,

a transparent film that is layered on said retroreflecting material, and

a low transmittance layer between said retroreflecting material and said transparent film,

wherein said low transmittance layer is formed of a material having a lower light transmittance than that of said transparent film, and the light transmittance of said low transmittance layer is 45% or higher to a light in a wavelength range of 420 nm to 700 nm,

wherein the material with a low light transmittance for forming said low transmittance layer is a material with a high light diffusibility as compared with that of said transparent film; and

wherein said material with a high light diffusibility is a spherical inorganic powder of spherical silica or spherical alumina or a spherical resin powder of spherical polymethyl methacrylate, spherical polyethylene or spherical silicone.

9. A forgery/alteration protective material comprising

a retroreflecting material for returning an incident light substantially along a proceeding direction along which the incident light travels,

a transparent film that is layered on said retroreflecting material, and

a low transmittance layer on a surface of said transparent film,

wherein the low transmittance layer is formed of a material having a lower light transmittance than that of said transparent film, and the light transmittance of said low transmittance layer is 45% or higher to a light in a wavelength range of 420 nm to 700 nm.

10. A forgery/alteration protective material as claimed in claim 9, wherein information, that is a letter, a designed pattern by printing, a photograph, or both, is recorded in said retroreflecting material.

11. A forgery/alteration protective material as claimed in claim 9, wherein said retroreflecting material is a color light retroreflecting material for turning color light with different color tone from that of the incident light in the proceeding direction of the incident light.

12. A forgery/alteration protective material as claimed in claim 9, wherein the material with a low light transmittance for forming said low transmittance layer is a material with a high light diffusibility as compared with that of said transparent film.

13. A forgery/alteration protective material as claimed in claim 12, wherein said material with a high light diffusibility is a spherical inorganic powder of spherical silica or spherical alumina or a spherical resin powder of spherical polymethyl methacrylate, spherical polyethylene or spherical silicone.

14. A forgery/alteration protective material as claimed in claim 9, wherein the material with a low light transmittance for forming the low transmittance layer is a material with a high light shielding property as compared with that of the transparent film.

15. A forgery/alteration protective material as claimed in claim 14, wherein said material with a high light shielding property is an inorganic substance selected from titanium oxide, zinc oxide, iron oxide, or titanium oxide-coated mica or a metal selected from aluminum or gold.

16. A forgery/alteration protective material as claimed in claim 9, wherein said material is stuck to or integrally formed in a substrate of paper or a film or an article.

17. A forgery/alteration protective material comprising

a retroreflecting material for returning an incident light substantially along a proceeding direction along which the incident light travels,

a transparent film that is layered on said retroreflecting material, and

a low transmittance layer between said retroreflecting material and said transparent film or on the surface of said transparent film,

wherein the low transmittance layer is formed of a material having a lower light transmittance and higher light diffusibility than that of said transparent film, said material is a spherical inorganic powder of spherical silica or spherical alumina or a spherical resin powder of spherical polymethyl methacrylate, spherical polyethylene or spherical silicone.