(19)
(11) EP 0 568 814 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
16.03.1994 Bulletin 1994/11

(43) Date of publication A2:
10.11.1993 Bulletin 1993/45

(21) Application number: 93105312.8

(22) Date of filing: 31.03.1993
(51) International Patent Classification (IPC)5: A63F 3/06
(84) Designated Contracting States:
AT DE ES FR GB GR NL

(30) Priority: 07.05.1992 US 879827

(71) Applicant: SCIENTIFIC GAMES Inc.
Alpharetta, Georgia 30201 (US)

(72) Inventors:
  • Behm, William Frederick
    Marietta, Georgia 30062 (US)
  • Litman, Stanley
    Gilroy, California 95020 (US)
  • Walton, Bradley Walter
    San Jose, California 95123 (US)

(74) Representative: Lorenz, Werner, Dipl.-Ing. 
Fasanenstrasse 7
D-89522 Heidenheim
D-89522 Heidenheim (DE)


(56) References cited: : 
   
       


    (54) Game ticket confusion patterns


    (57) Security of game cards such as instant lottery tickets can be improved by locating a confusion pattern (32) below a primer layer (14) on a game cards substrate (12) and by locating another confusion pattern (34) on a release coat (24) above a game card play indica (20). Game card security can be further enhanced by using confusion pattern ink that bleeds through the game card in response to the application of various solvents.






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