| 摘要 |
An instant-game-type lottery ticket comprises a card having a coating on the front side thereof which includes a first metallic layer and an outwardly facing layer of thermally responsive chemicals, a removable opaque layer over at least a portion of the thermally responsive chemical layer and a second metallic layer on the back side of the card. The metallic layers preferably comprise vacuum deposited silver-colored metallized layers having protective transparent plastic films thereon. Game-playing indicia can be imprinted on the lottery ticket at the point of sale without damaging the removable opaque layer by selectively activating the thermally responsive chemicals under the removable opaque layer with a thermal printhead. The transparent plastic films allow the card to be thermally imprinted with a thermal printhead without damaging the printhead and the metallized layers add opacity to the lottery ticket.
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