| 摘要 |
<p>This invention is a method for heating only an outer exterior surface (100) of an area on a substrate. A pigmented area (120) is provided on the outer exterior surface (100) of the substrate. The pigmented area may, for example, be formed by applying a pigment to an area of interest on the outer exterior surface (100) of the substrate. The pigmented area (120) is illuminated with laser light energy for a period sufficient to heat the area of interest. During the illuminating step, substantially all of the laser light energy is absorbed by the pigmented area (120) on the outer exterior surface (100) of the substrate, and the laser light energy does not substantially penetrate into the depth of the substrate.</p> |
