| 摘要 |
PURPOSE:To make distinguish characters, symbols, or figures engraved on the surface of a plate, or to generate brightness on the whole surface of the plate by using a transparent material having reflecting face(s) for scattering or transmitting incident light from the side face of the plate formed in the inside and/or on the rear surface of the plate. CONSTITUTION:Suitable transparent material is glass, acrylic resin, polycarbonate resin, polystyrene resin, acetate resin, transparent ABS resin, ionomer resin, or polyvinyl chloride resin, etc. Any of ceramic, thermosetting resin thermoplastic resin, etc. may be useful for the transparent material, but those having >=80% light transmittance per 3mm thickness is preferable. A light reflexing face which scatters or transmit the light incident from the side face of the plate at the specified position of the surface is provided to the inside and/or rear surface of the plate comprising said transparent material. The reflecting surface is preferred to be formed substantially perpendicularly in the forwarding direction of incident light in the inside of the plate plane to form substantially uniform scattered light or transmitted light. |
