发明名称 MULTI-COLOR OVERPRINTING OF SCRATCH-OFF LOTTERY TICKETS
摘要 A method of producing a lottery ticket and lottery tickets produced thereby wherein an overprinting layer is provided over a scratch-off layer, the overprinting layer comprising an image obtained from a design in which the colors in the design have been separated into half tone images of each color and are superimposed on the scratch-off layer of the lottery ticket.
申请公布号 WO9640395(A1) 申请公布日期 1996.12.19
申请号 WO1996IB00632 申请日期 1996.06.04
申请人 BABN TECHNOLOGIES CORP. 发明人 DESBIENS, JEAN-PIERRE
分类号 A63F3/06;(IPC1-7):A63F3/08 主分类号 A63F3/06
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