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 Poliro litho "roll-up" inking rollers
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These rollers are available in several qualities: |
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Roll covered with Nitril-Rubber-PVC
This rubber quality is normally used for roll-up rollers. Used mostly for printing transparent primary colours. Diameters 10 cm (4") and 16 cm (6.3"). Length 30 cm (12"), 40 cm (16"), 50 cm (20") and 60 cm (24") |
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Roll covered with Nitril-Rubber "nylon-flock".
The nylon fibres create a "peach-skin" , allows higher volumes of ink transfer. Good alternativ for leather rollers. Good for "roll-up-ink". Diameter 16 cm (6.3"). Length 30 cm (12"), 40 cm (16"), 50 cm (20") and 60 cm (24") |
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Roll covered with Nitril-Rubber "cotton-flock".
Even higher volume of ink transfer, because of the rough surface. Can absorb moisture, to avoid emulsification of ink. Good for testprints and earth tones. Diameter 16 cm (6.3"). Length 30 cm (12"), 40 cm (16"), 50 cm (20") and 60 cm (24") | There is a certain logic in the different qualities of the rollers. Some features:
- The softness in degrees Shore. Lithor rollers are soft, to allow an easy transfer of ink.
- The structure. The structure on the surface determines the quantity of ink that can be transferred, a rough structure transfers more ink than a smooth surface. A smooth roller should therefore be used for "delicate" ink ( tranparent inks + fine details). For darker colours a more structured surface is fine. For non drying "roll-up-ink" the roll should have some structure. (like leather)
- Capacity to absorb moisture. This can be useful to avoid mixing of water and ink (emulsification). This capacity should be limited however, otherwise the stone will dry out too quickly.
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