printing

Screen ruling
For optimun results a screen of 133-150 lpi should be used. Finer screens, up to a maximun of 200 lpi can also give very good results with careful ink density control. For dark 4 colour images with high ink density, under colour removal may be required depending on the quality of the visual. This willalso hepl to reduce the print drying time.
Printing inks
Conventional, positive drying inks should be used with or without Infra Red drying assistance. UV inks may also be used. Avoid using overnight/stay fresh/duct stable inks. Always allow sufficient drying time. Anti set-off spray is recommended when printing multiple colours. Use laser-stable inks for subsequent laser printing. It is always advisable to consult your ink supplier about specific projects to ensure ink suitability.
Paper handing
Select a slower press speed for board printing. Do not allow to delivery stack to become too large; prints at the stack bottom will still be wet and less resistant to marking. Protect paper from environmental humidity and temperature changes by always using stack covers or stretch wrap.
Litho printing
For optimun results on textures and embossed papers increase the blanket pressure or use a softer blanket to achieve consistent ink lay down.
Varnishing
To achieve a gloss varnish it is essential to pre-seal the surface. Silk screen matt UV varnish should be used first follow by subsequent applications of gloss UV varnish to achieve the desired effect. Ensure suitable inks are used prior to varnishing and that the inks are completely dry before varnish application. Not recommended for paper weights.
Blind embossing
All finishes can be blind embossed. For subsequent laser printing, we recommend a shallow emboss to allow good feeding and to avoid damaging the emboss.
Laser-cutting
While laser-cutting is easy, some scorching will be apparent around the cut area. Laser-cut papers are more prone to misfeeds and jams within office printing technologies.
Hot foil blocking
All finishes in the ArjoWiggins Impressions range can be foil blocked. Foil blockers can recommend the best foil for the image and the paper chosen.
Folding and creasing
To guarantee good folding results, prior creasing is recommended. Creases should be made parallel to the grain of the board. For best results a creasing rule and matrix system should be used. Fold into the bead for prominent folds except for Translucents (see separate instruccions).
Screen printing
All finishes can be successfully screen printed.
Office desktop printing
Most products in the range carry desktop laser and inkjet guarantees depending on grammage and colour.
Laser stable inks should be used on pre-printed sheets for subsequent laser printing.
Some finishing techniques such as die-cutting and deep emboses may cuase office machines to jam. Thermography is not recommended for subsequent laser printing.