Melbourne Museum of Printing
PRE-PRESS DEVICES
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Devices to produce printing plates for offset lithography.

Some use a prepared negative of the artwork and expose it onto a sensitised (usually metal) plate: the plate is then treated chemically by hand or in another machine (Plate Processor).

Others work directly from the artwork and may expose the (typically paper) plate and treat it.

And there are other combinations of exposure method, plate material and treatment.


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