Genuine/counterfeit discriminating method, genuine/counterfeit discrimination object, and genuine/counterfeit discriminating device

• US 6,987,868 B1
• Filed: 11/25/1999
• Issued: 01/17/2006
• Est. Priority Date: 11/27/1998
• Status: Expired due to Fees

• Current Assignee: Katsuto Nakatsuka, Nittetsu Mining Company Limited
• Original Assignee: Katsuto Nakatsuka, Nittetsu Mining Company Limited
• Inventors: Nakatsuka, Katsuto, Atarashi, Takafumi
• Primary Examiner(s): Johns, Andrew W.
• Assistant Examiner(s): NAKHJAVAN, SHERVIN K
• Application Number:
  US09/856,957
• Time in Patent Office: 2,245 Days
• Field of Search: 382/112, 382/135, 382/139, 382/140, 382/143, 382/182, 382/206, 382/207, 382/218, 382/224, 382/318, 382/320, 902/7, 902/28, 434/110, 209/534, 283/72, 283/83, 283/85, 283/88, 283/89, 283/95, 283/96, 283/113, 283/114
• US Class Current: 382/112
• CPC Class Codes: G07D 7/02 Testing electrical properties of the materials thereof G07D7/01 takes precedence
• CPC Class Codes: G07D 7/04 Testing magnetic properties of the materials thereof, e.g. by detection of magnetic imprint G07D7/01 takes precedence
• CPC Class Codes: G07D 7/12 Visible light, infrared or ultraviolet radiation
• CPC Class Codes: G07D 7/20 Testing patterns thereon G07D7/004, G07D7/005 take precedence

Abstract

A genuine/counterfeit discrimination method, comprising identifying a combination of at least two of an electric field pattern, a magnetic pattern, an electron beam responsive pattern, and reflection or absorption patterns of visible light, ultraviolet light, and infrared light using an electric field, a magnetic field, an electron beam, visible light, ultraviolet light, or infrared light. A genuine/counterfeit discrimination object, wherein a combination of at least two of an electric field pattern, a magnetic pattern, an electron beam responsive pattern, and reflection or absorption patterns of visible light, ultraviolet light, and infrared light can be identified therein using an electric field, a magnetic field, an electron beam, visible light, ultraviolet light, or infrared light. And a genuine/counterfeit discrimination device comprising at least two devices selected from a device for identifying an electric field pattern, a device for identifying a magnetic pattern, a device for identifying an electron beam responsive pattern, a device for identifying a visible-light pattern, a device for identifying an ultraviolet-light pattern, and a device for identifying an infrared-light pattern and further comprising a device for comparing and identifying patterns obtained with these identification devices.

Claims

1. A genuine/counterfeit discrimination method, comprising identifying on a genuine/counterfeit discrimination object a combination of at least two of an electric field pattern, a magnetic pattern, an electron beam responsive pattern, an X-ray responsive pattern, and reflection or absorption patterns of visible light, ultraviolet light, and infrared light, using an electric field, a magnetic field, an electron beam, an X-ray beam, visible light, ultraviolet light, or infrared light,

wherein the genuine/counterfeit discrimination object is a printed matter obtained by printing with a color ink composition comprising a powder of colored particles, said powder is prepared by coating base particles with a multilayered film so as to exhibit color by means of light interference, and to enable the particles to show a specific interference reflection peak in a region besides the visible light region, and said color ink composition is prepared by dispersing the powder into a dispersion medium for ink.

2. The genuine/counterfeit discrimination method according to claim 1, wherein all the patterns to be identified are identical.

3. The genuine/counterfeit discrimination method according to claim 1, wherein each of the patterns is imaged and the images are compared and identified.

4. The genuine/counterfeit discrimination method according to claim 1, wherein the identification of a visible-light pattern is indispensable.

5. The genuine/counterfeit discrimination method according to claim 1, wherein the base particles comprise a magnetic material.

6. The genuine/counterfeit discrimination method according to claim 1, wherein the base particles used in the color ink composition are comprise a conductive material.

7. The genuine/counterfeit discrimination method according to claim 1, characterized in that the electron beam responsive pattern formed with an electron beam is identified with an electron microscope.

8. A genuine/counterfeit discrimination object, having formed thereon for identification a combination of at least two of an electric field pattern, a magnetic pattern, an electron beam responsive pattern, an X-ray responsive pattern, and reflection or absorption patterns of visible light, ultraviolet light and infrared light, said at least two patterns discernible by subjecting the genuine/counterfeit discrimination object to an electric field, a magnetic field, an electron beam, an X-ray beam, visible light, ultraviolet light, or infrared light, which genuine/counterfeit discrimination object is a printed matter obtained by printing with a color ink composition comprising a powder of colored particles, said powder prepared by coating base particles with a multilayered film so as to exhibit color by means of light interference, and to enable the particles to show a specific interference reflection peak in a region besides the visible light region, and said color ink composition prepared by dispersing the powder into a dispersion medium for ink.

10. The genuine/counterfeit discrimination object according to claim 8 or 9, wherein the matter to be printed or the substrate is a sheet or plate, a woven fabric, or a knit fabric made of a paper, resin, glass, rubber, ceramic, or metal.

9. A genuine/counterfeit discrimination object, having formed thereon for identification a combination of at least two of an electric field pattern, a magnetic pattern, an electron beam responsive pattern, an X-ray responsive pattern, and reflection or absorption patterns of visible light, ultraviolet light and infrared light, said at least two patterns discernible by subjecting the genuine/counterfeit discrimination object to an electric field, a magnetic field, an electron beam, an X-ray beam, visible light, ultraviolet light, or infrared light, which genuine/counterfeit discrimination object is obtained by forming a peculiar differentiation pattern on a substrate by coating with a color ink composition comprising a powder of colored particles, said powder prepared by coating base particles with a multilayered film so as to exhibit color by means of light interference, and to enable the particles to show a specific interference reflection peak in a region besides the visible light region, and said color ink composition prepared by dispersing the powder into a dispersion medium for ink.

11. A genuine/counterfeit discrimination device, comprising means for identifying on a genuine/counterfeit discrimination object a combination of at least two of an electric field pattern, a magnetic pattern, an electron beam responsive pattern, an X-ray responsive pattern, and reflection or absorption patterns of visible light, ultraviolet light, and infrared light, using an electric field, a magnetic field, an electron beam, an X-ray beam, visible light, ultraviolet light, or infrared light,

wherein the genuine/counterfeit discrimination object is a printed matter obtained by printing with a color ink composition comprising a powder of colored particles, said powder is prepared by coating base particles with a multilayered film so as to exhibit color by means of light interference, and to enable the particles to show a specific interference reflection peak in a region besides the visible light region, and said color ink composition is prepared by dispersing the powder into a dispersion medium for ink, and

wherein all the patterns to be identified are identical,

said device comprising at least two devices selected from a device for identifying an electric field pattern, a device for identifying a magnetic pattern, a device for identifying an electron beam responsive pattern, a device for identifying an X-ray responsive pattern, a device for identifying a visible-light pattern, a device for identifying an ultraviolet-light pattern, and a device for identifying an infrared-light pattern and further comprising a device for comparing and identifying patterns obtained with these identification devices.

12. The genuine/counterfeit discrimination device according to claim 11, which indispensably has the device for identifying a visible-light pattern.

13. The genuine/counterfeit discrimination device according to claim 11, wherein the device for identifying an electron beam responsive pattern is an electron microscope.