| 摘要 |
The multi-colour printing system uses a pin registration system for accurate alignment on the light table, plate maker and printing cylinder which ensures the in-registration production of plate negative and printing plates and their accurate mounting on the printing cylinder. In order to achieve this precision the original which is to be printed and the plate negative have registration holes separated by a distance equal to the distance between registration pins on the preparation table and the plate making frame. The pins are screwed into holes on a registration bar. The plate which is produced has edge slots at the same spacing which are located against registration pins on the printing cylinder. |
