Prepress digital UV direct exposure
Screeny direct UV exposure with Luescher CtP unit
Screeny conventional screen printing plates can be imaged in the printer’s existing digital workflow, for example using a CtP unit from Lüscher AG. This type of equipment enables the CtP workflow to be extended beyond existing printing applications to screen printing. An analogue film is no longer required, conventional exposing is no longer necessary.
Lüscher devices can be equipped with various types of lasers (405nm, 830nm, 940nm) at the same time. This enables the following printing plates to be imaged:
- Offset plates (conventional and thermal imaging)
- Flexographic plates with a LAMS layer
- Letterpress plates
- Digital films
- Conventional Screeny printing plates including Screeny S-Line
- Screeny Digital plates
In order to achieve perfect register accuracy, the Lüscher devices are equipped with register pins. It is also possible to retrofit them into existing devices. The Screeny format is fixed using a vacuum system.
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Job data, handled using digital workflow software. | The film is no longer necessary. | The Screeny printing
plate is cut to the required size and punched with register holes. The foil is removed. |
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Imaging Screeny using Lüscher direct UV beam | Exposure is no longer necessary | The photopolymer is
developed with water
that is free from chemi-
cal additives. |
 |  |  |
Brief drying with hot
air before continuing
with further steps. | The printing plates are mounted by welding the ends. | Attachment of the
stencil rings produces
a stable printing
cylinder. |