| 摘要 |
PURPOSE:To obtain a comparatively simple and not expensive device by a structure wherein a matrix made of ultraviolet transmitting material, a pressing means, with which the surface of ultraviolet non-transmitting plastic board material is brought into close contact with the face having transferring pit train of the matrix, and an ultraviolet irradiating means, which is arranged at the back of the matrix, are equipped. CONSTITUTION:An ultraviolet lamp 2 is lit under the condition that a board material 8a is placed on the top surface of a matrix 1 made quartz glass. Since the quartz glass matrix 1 hardly absorbs ultraviolet rays, the light energy of the ultraviolet lamp 2 reaches the surface of the board material with almost no damping of the energy. Since the polycarbonate board material 8a is hard to transmit ultraviolet rays, almost all the light energy is absorbed at the surface of the board material 8a, resulting in bringing said surface up to high temperature and in the gelatinized state. The resultant board material 8a, the surface of which has been gelatinized, is pressed against the surface of the matrix 1 with a device, resulting in transferring the reversed shapes of the transferring pits 1a of the matrix 1 to the surface of the board material. Next, since environment has large heat capacity, when the irradiation with the ultraviolet lamp 2 is stopped, the surface of the board material 8a is cooled rapidly, resulting in easily separating a formed item from the matrix. |
