| 摘要 |
Smoking articles (10) include a colour shifting marking (99). The marking (99) may be provided on a wrapper, such as a plug wrap (60), a smokable material wrap (40), or a tipping paper wrap (50). The marking (99) may be produced by a gonichromatic pigment to provide a smooth transition between colours as viewing angles change. The marking (99) may allow a consumer to identify the smoking article (10) as genuine, as opposed to counterfeit. |
