| 摘要 |
A printing member such as a metal cylinder (1) incorporates a photopolymer (2) as a light-sensitive medium. In a process for preparing the printing member, the photopolymer (2) is coated with a secondary photosensitive layer (3). In one example this is a photographic emulsion of the type commonly used for lithography. The secondary light-sensitive layer is exposed using a digitally modulated light source. The light source is scanned with respect to the printing member. Subsequently the secondary photosensitive layer is developed and then the photopolymer is exposed through the developed secondary photosensitive layer. |
