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Pre-/Post-Dampening with Alcolor |
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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.
| The pre- and post-dampening phase with Alcolor |
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| 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.
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