| 摘要 |
<p>A method of manufacturing an improved instant lottery ticket with a graphic overprint applied by offset lithography, and the instant lottery ticket made accordingly, are provided, whereby the superior quality visual images produced by lithographic printing may be obtained for the marketing advantage of the lottery ticket. A substrate comprises a secure area having variable (e.g. game) data printed therein and a graphic area. The secure area is hidden by a non-graphic overprint layer which covers it, comprising scratch-off layers. A graphic overprint layer is applied over the non-graphic overprint layer by means of offset lithographic printing. The non-graphic overprint layer is prepared in such a manner as to provide a sufficiently thin and smooth, and having the appropriate rheology and pH characteristics, for compatibility with graphic overprinting by offset lithography.</p> |
