Zebra P520 Manual de usuario Pagina 51

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Company Confidential
Varnish Overlays
Varnish overlays use the same concept as thermal transfer
monochrome ribbon. Varnish overlay consist of: polyester foil
(carrier), special backcoat, and ink. The ink transfer can be done
by a printhead or by a hot roller (P520i Lamination station).
1
Polyester foil (6 to 19µ)
2
Transfer
area
3
1 Backcoat for a printing with a printhead
no Backcoat for a printing with a hot roller (P520i Laminator station)
2 polyester foil : it is the carrier
3 the ink is often a 3 to 4 coats :
• wax release coat
• emboss coat
• high refractive index coating (metal layer)
•adhesive coat
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