| 摘要 |
PURPOSE:To obtain a simple device by using repeatedly an endless master sheet produced by applying a thermally reversible material which is transparent with UV rays at ordinary temp. and turns non-transmittible to UV rays when heated on a substrate repeatedly. CONSTITUTION:A master sheet 1 produced by applying such a termably reversible material 2 which is transparent with UV rays at ordinary temp. and turns non-transmittible to UV rays when heated on a substrate 3 transparent with UV rays is provided like an endless belt. The 1st exposing part 4 with IR rays and the 2nd exposing part 7 operating with UV rays as well as a reproducing part 9 are provided respectively in the position where the sheet 1 passes; further, a developing part 13 which develops the latent images formed on diazo photosensitive paper 11 in the part 7 is provided. |
