Decorative article

• US 5,492,370 A
• Filed: 08/31/1993
• Issued: 02/20/1996
• Est. Priority Date: 03/22/1991
• Status: Expired due to Fees

• Current Assignee: De La Rue International Limited (De La Rue PLC)
• Original Assignee: DE La Rue Holographics Ltd. (De La Rue PLC)
• Inventors: Kay, Ralph, Chatwin, Charles E.
• Primary Examiner(s): Ryan, Patrick J.
• Assistant Examiner(s): LAM, CATHY FONG FONG
• Application Number:
  US08/098,267
• Time in Patent Office: 903 Days
• Field of Search: 428/915, 428/916, 359/2, 283/85, 283/86, 283/91, 283/904, 283/82, 283/83, 283/107, 283/108
• US Class Current: 283/110
• CPC Class Codes: B41M 3/14 Security printing securities B42D25/29
• CPC Class Codes: B42D 25/328 Diffraction gratings; Holograms
• CPC Class Codes: G03H 1/0011 for security or authentication holograms on information-bearing cards B42D25/328; testing papers with holograms G07D7/0032
• CPC Class Codes: G03H 1/0244 Surface relief holograms replicating hologram without interference recording G03H1/0276
• CPC Class Codes: Y10S 283/904 Credit card
• CPC Class Codes: Y10S 428/916 Fraud or tamper detecting

Abstract

The article includes a substrate which is composed of a single ply that contains both a structure for generating a viewable optically variable effect, such as a hologram, and carries an indicia receptive coating. The indicia receptive coating covers the single ply such that at least part of the optically variable effect is visible. The indicia receptive coating may receive printed indicia such as security indicia, alphanumeric character shapes, symbols, and bar codes. The article with the single ply that contains viewable optically variable effect and also carries the printed indicia, is more tamper resistant than previous identification documents. It is very difficult, if not impossible, to alter the printed indicia without also altering the structure that generates the viewable optically variable effect or vice versa.

Claims

1. An article comprising a substrate having a structure for generating a viewable optically variable effect, the substrate being partially printed with a continuous non-self-supporting, indicia-receptive coating, wherein the coating acts as a mask which overlies at least part of the structure for generating the viewable optically variable effect and includes at least one window through which the viewable optically variable effect can be observed.

2. An article according to claim 1, wherein indicia are provided on the surface of the substrate not carrying the continuous coating.

3. An article according to claim 1, wherein the at least one window defines indicia.

4. An article according to claim 3, wherein the indicia comprises alphanumeric characters.

6. An article according to claim 1, wherein the article consists of the substrate and printing alone.

7. An article according to claim 1, wherein the substrate consists of a polymeric film alone.

8. An article according to claim 1, wherein the coating defines a rainbow effect.

9. An article according to claim 1, wherein the substrate comprises a polymeric film.

10. An article according to claim 9, wherein the polymeric film extends throughout the article.

11. An article according to claim 1, wherein the at least one window in which the optically variable effect is visible exhibits one of an individual, discrete optically variable effect image and a repetitive pattern.

12. An article according to claim 1, wherein the coating covers a substantial area of the substrate.

13. An article according to claim 1, wherein a metallic coating is provided on the substrate, the metallic coating being selectively removed to define security indicia.

14. An article according to claim 1, further including an outermost adhesive layer to enable the article to be adhered to a surface.

15. An article according to claim 1, wherein the optically variable effect is one of a diffraction polarization and interference effect.

16. A security article according to claim 1, wherein the article is selected from the group comprising passports, visas, vehicle licence certificates, vehicle tax certificates, identity cards, financial transaction cards, access cards, cheques, bond, tickets, passes, brand protection items, authentication certificates, vouchers, bank notes, bank note threads, credit notes, financial instruments, legal documents, stamps, permits, licences such as driving licences, lottery tickets and gaming cards, machine readable holographic articles and the like.

17. An article according to claim 1, wherein printing is provided on the coating.

18. An article according to claim 1, wherein at least one of the printing and the at least one window define security indicia.

5. A method of manufacturing security articles, the method comprising:

providing a substrate having a structure for generating an optically variable effect; and

printing a partial, continuous, non-self-supporting, indicia-receptive coating on the substrate;

wherein the coating acts as a mask which overlies at least part of the structure for generating the optically variable effect and includes at least one window through which the optically variable effect can be observed.

19. A method according to claim 5, further comprising;

defining a number of portions on the substrate each incorporating a first viewable optically variable effect area and a separate second indicia providing viewable area, wherein the separate area of the substrate exhibits printing and divides the substrate into individual portions.

20. A method according to claim 19, wherein printing is applied before dividing the substrate into individual portions.

21. A method according to claim 5, wherein the film comprises a polymeric film.

22. A method according to claim 5, wherein the coating is opaque.

23. A method according to claim 5, wherein the substrate is in the form of a roll.

24. A method according to claim 5, wherein the coating defines a rainbow effect.

25. A method according to claim 5, wherein the optically variable effect generating structure includes partial metallisation.

26. A method according to claim 25, further comprising;

applying a corona treatment to the surface of the substrate which will carry the metallisation.

27. A method according to claim 26, wherein the metallisation is in the form of a half tone dot pattern.

28. A method according to claim 5, further comprising;

providing indicia on the indicia receptive coating.

29. A method according to claim 5, wherein at least one of the printing and the indicia define security indicia.