Pre-/Post-Dampening with Alcolor
Using automatic pre-dampening, the Alcolor dampening system ensures
there is adequate dampening agent film on the printing plate. Where
printing is interrupted (washing, stoppages etc.) the dampening
system is automatically switched off as part of a post-dampening
phase. The duration of the automatic pre- and post-dampening phases
can be set via the machine control system and thereby adapted to
the many different materials in use and the conditions that exist
in print shops. Good adjustment ensures an optimum amount of
dampening agent when printing starts and after printing has been
interrupted.
To avoid excess dampening agent on the printing plate, the pre- and post-dampening phases should be set to the minimum.
| The pre- and post-dampening phase with Alcolor | ||||
| Mode | Standard settings | Revolutions | Adjustment range max. revolutions | Adjustment range min. revolutions |
| Pre-dampening phase 1 | 3 | 3 | 18 | 0 |
| Pre-dampening phase 2 | 2 | 2 | 18 | 0 |
| Post-dampening phase 1 | 15 | 15 | 50 | 0 |
| Post-dampening phase 2 | 45 | 45 | 100 | 0 |
To avoid excess dampening agent on the printing plate, the pre- and post-dampening phases should be set to the minimum.
