| 摘要 |
An image can be formed onto a device such as a cell phone or a tablet by laser engraving the image onto a housing of the device. A coloring agent can then be applied to the engraved image to modify the color of the image. The coloring agent can darken the engraved image. The coloring agent can include multiple colors of ink (e.g., UV curing ink) that can be applied to form a multi-color image. The coloring agent can be applied without requiring the use of a masking layer, for example, by aligning the laser engraved image with a coloring agent applicator so that the coloring agent is applied to substantially only the engraved image on the device.
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