Methods for application of a tag onto a media article

• US 20050167510A1
• Filed: 03/02/2005
• Published: 08/04/2005
• Est. Priority Date: 12/12/2002
• Status: Active Grant

• Current Assignee: General Electric Company
• Original Assignee: Marc Brian Wisnudel, Radislav Alexandrovich Potyrailo, Steven F. Hubbard
• Inventors: Potyrailo, Radislav Alexandrovich, Wisnudel, Marc Brian, Hubbard, Steven F.
• Granted Patent: US 7,508,499 B2
• Time in Patent Office: Days
• US Class Current: 235/487
• CPC Class Codes: B82Y 10/00 Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic
• CPC Class Codes: B82Y 30/00 Nanotechnology for materials or surface science, e.g. nanocomposites
• CPC Class Codes: G06K 1/12 otherwise than by punching
• CPC Class Codes: G06K 1/123 for colour code marks
• CPC Class Codes: G06K 19/06009 with optically detectable marking G06K19/063, G06K19/08 take precedence
• CPC Class Codes: G06K 19/06046 Constructional details
• CPC Class Codes: G06K 2019/06225 using wavelength selection, e.g. colour code
• CPC Class Codes: G06K 2019/06253 for a specific application
• CPC Class Codes: G11B 20/00086 Circuits for prevention of unauthorised reproduction or copying, e.g. piracy indicating unauthorised use of record carriers in general G11B23/28; scrambling for television signal recording H04N5/913; network architectures or network protocols for network security H04L63/00; cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
• CPC Class Codes: G11B 20/00876 wherein physical copy protection means are attached to the medium, e.g. holograms, sensors, or additional semiconductor circuitry
• CPC Class Codes: G11B 23/30 with provision for auxiliary signals
• CPC Class Codes: G11B 7/252 of layers other than recording layers
• CPC Class Codes: G11B 7/2534 polycarbonates [PC]
• CPC Class Codes: G11B 7/254 of protective topcoat layers
• CPC Class Codes: G11B 7/2585 based on aluminium
• CPC Class Codes: G11B 7/26 Apparatus or processes specially adapted for the manufacture of record carriers
• CPC Class Codes: Y10T 428/25 Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles

Abstract

A method for imparting tags to a media article, comprising: modifying predetermined locations on the article to change a surface energy of the predetermined locations, applying the tags to a surface of the article, and retaining the tags in the modified predetermined locations while the tags are removed from unmodified regions.

Claims

1. A method for tagging a media article, comprising:

modifying predetermined locations on the media article to change a surface energy of the predetermined locations;

applying a tag to the media article; and

retaining the tag in the modified predetermined locations while the tag is removed from unmodified regions.

2. The method of claim 1, wherein applying the tag comprises subjecting the media article to a spinning motion that produces centrifugal forces, and wherein the tag is removed from the unmodified regions by the centrifugal forces.

3. The method of claim 1, wherein the tag comprises spectroscopic tag.

4. The method of claim 3, wherein the spectroscopic tag is selected from the group consisting of:

organic dyes, organic pigments, inorganic dyes, inorganic pigments, nanocrystals, nanoparticles, quantum dots, organic fluorophores, inorganic fluorophores, and combinations comprising at least one of these tags.

5. The method of claim 3, wherein excitation wavelengths of the spectroscopic tag is in a range of operation of a laser diode used in an optical media article drive, and wherein a readout of the tag is performed by the laser of the optical media article drive.

6. The method of claim 3, wherein excitation wavelengths of the spectroscopic tag is in a range of operation outside of the laser diode used in an optical media article player or recorder, and wherein a readout of the tag is performed outside of the optical media article player.

7. The method of claim 1, wherein the media article comprises an optically transparent substrate with the tag on a laser-incident surface of the substrate.

8. The method of claim 1, wherein the media article comprises an optically transparent substrate with the tag on a data layer adjacent to a reflective layer.

9. The method of claim 1, wherein a material of the article is selected and/or modified to provide required properties for the retention of the dissolved tag on the article.

10. The method of claim 9, wherein the modifications are selected from the group consisting of different copolymer materials, surface-segregating additives, endcapping, and combinations comprising at least one of the foregoing modifications.

11. The method of claim 1, wherein the modifying comprises using light-induced surface modification.

12. The method of claim 1, wherein removing the tag from the unmodified regions comprises washing off excess tag by applying a pure solvent onto the media article.

13. The method of claim 1, wherein the media article is an optical media article and wherein the tag does not interfere with optical properties of the optical media article.

14. The method of claim 1, wherein modifying predetermined locations comprises using a radiation source;

and wherein applying the tag comprises dissolving a dye in an appropriate solvent to form a solution, and applying the solution to the media article.

15. The method of claim 14, further comprising applying the solution while the media article is undergoing a spinning motion, and wherein the dye is removed from the unmodified regions by centrifugal forces produced from the spinning motion.

16. The method of claim 14, wherein the dye is a fluorophore.

17. The method of claim 1, wherein the tag is a fluorescent material.

18. A method of claim 1, wherein modifying the predetermined locations comprises modifying predetermined locations on a surface of a coating of the media article.

19. The method of claim 1, wherein applying the tag and retaining the tag in the modified predetermined locations further comprises subjecting the article to a spinning motion that produces centrifugal forces.

20. The method of claim 19, wherein modifying the predetermined locations comprises using light-induced surface modification.

21. A media article formed in accordance with the method of claim 1.

22. A media article comprising:

a substrate;

data; and

a tag disposed in one of a modified predetermined location on the media article and an unmodified region on the media article.

23. The media article of claim 22, wherein the tag is disposed in at least two modified predetermined locations

24. The media article of claim 22, wherein the media article is an optical media article and wherein the tag does not interfere with optical properties of the optical media article.

25. The media article of claim 22, wherein the tag is used for a purpose selected from the group consisting of identification, piracy protection, labeling, and decorative applications.

26. The media article of claim 22, wherein the tag comprises a spectroscopic tag.

27. The media article of claim 22, wherein the media article comprises an optically transparent substrate with the tag on a laser-incident surface of the substrate.

28. The media article of claim 22, wherein the media article comprises an optically transparent substrate with the tag on a data layer adjacent to a reflective layer.

29. A method for tagging a media article, comprising:

modifying predetermined locations on the media article to change a surface energy of the predetermined locations;

applying a tag to the media article; and

retaining the tag in unmodified regions while the tag is removed from the modified predetermined locations.

30. The method of claim 29, wherein applying the tag comprises subjecting the article to a spinning motion that produces centrifugal forces.

31. The method of claim 29, wherein the tag comprises a spectroscopic tag.

32. The method of claim 29, wherein the media article comprises an optically transparent substrate with the tag on a laser-incident surface of the substrate.

33. The method of claim 29, wherein the media article comprises an optically transparent substrate with the tag on a data layer adjacent to a reflective layer.

34. The method of claim 29, wherein the predetermined locations on the surface of the article are modified using chemical modification.