| 摘要 |
A substrate, comprises a plurality of substantially equally spaced embossed grooves and a line of material provided in the vicinity of at least one of the embossed grooves. In a first region of the substrate, the line of material has a fixed positional relationship with at least one of the embossed grooves to provide a first visual effect when the substrate is viewed from a first angle, and a second visual effect when the substrate viewed from a second angle. In a second region of the substrate, there is a deviation in the fixed positional relationship between the line of material and the at least one of the plurality of embossed grooves to provide a third visual effect in the second region when the substrate is viewed from the first angle and a fourth visual effect when the substrate is viewed from the second angle. |
