| 摘要 |
A method of manufacture of an identification plate comprises:advancing a transparent sheet material having an opaque material in contact with one maj or surface thereof to a printing station; printing indicia in reverse on the other major surface of the sheet material; and securing the printed sheet material to a substrate having a retro-reflective surface such that the printed surface is in contact with, or at least adjacent to, the retro- reflective surface.
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