| 摘要 |
PURPOSE: A pattern formation method of a lighting cover is provided to prevent discoloration by using pattern forming liquid of special component which does not react to hydrofluoric acid. CONSTITUTION: A transparent lighting cover body is manufactured in a glass molding step. A pattern forming liquid is printed on the exterior of the transparent lighting cover body in a pattern printing layer formation step. A pattern printing layer(200) is dried in a natural state in a drying step in order to stick the pattern printing layer on the exterior of the transparent lighting cover body. The transparent lighting cover body is dipped in a hydrofluoric acid receiving container(300) and the exterior of the transparent lighting cover body is opaquely corroded in a corrosion step. |
