Image transferring
There are two kinds of photopolymer
plates in depend of the method, which the image is
transferred.
1.
Analogue –
Image is transferred on
plate through beforehand
styled film
negative.
2.
Digital – Image
is transferred on plate through laser engraving.
Wash methods
Wash
methods:
1.
Solvent –
chemical dissolving.
2.
Dry – thermal
taking of the elements, that shouldn't be printed.
The
main difference between this two kinds is:
-In
solvent type wash, printed elements grow in time and even in
3 hour drying they doesn't give back their onset appearance.
-In
thermal kind of wash there are no deformations and forms
don't need to be dried, consequently the time of making is less.
-
Printing elements are more stable.
