Spot UV Printing

Spot UV applies a clear, high-gloss varnish to selected areas of a printed sheet, creating contrast between the coated and uncoated surfaces. It draws attention to logos, images or text without adding colour. We produce spot UV in-house at our Marrickville embellishment department.

What is spot UV

Spot UV is a liquid varnish applied to specific areas of a printed sheet, then cured (hardened) under ultraviolet light. The cured varnish creates a glossy, raised surface that reflects light and contrasts with the flat or matt finish of the surrounding area.

The effect works by exploiting the difference between two surface textures on the same sheet. A matt-celloglazed sheet with spot UV on the logo creates a two-tone effect that is visible and tactile.

When to use spot UV

Spot UV suits any project where you want to highlight a specific design element. Common applications include business cards, book covers, annual reports, packaging, presentation folders and premium marketing collateral.

The technique is most effective when applied over a matt or silk celloglaze base. The contrast between the matt background and the gloss UV is what creates the visual impact. Applying spot UV over an already glossy surface produces a much less noticeable result.

One of the most striking applications is spot UV on specialty uncoated coloured cardstock. This creates a tonal contrast, for example a gloss black logo on a matt black card, that is subtle but immediate. Uncoated stocks require two passes of varnish due to absorption, which adds cost but the result is worth it.

Design considerations

Spot UV artwork is supplied as a separate layer or spot colour channel, typically named “Spot UV” or “Varnish”. The UV varnish slightly deepens the colour of anything printed beneath it, so factor this into colour-critical designs.

Minimum line weight for clean UV application is approximately 0.3mm. Very fine text and hairline details may not varnish cleanly. Large solid areas varnish reliably.

Spot UV is applied after printing and celloglaze, so it adds a production step and drying time. It is cost-effective on medium to long runs where the setup is spread across enough units.

Alternatives to spot UV

For short runs, spot UV setup costs can be high per unit. Digital foiling with a clear foil creates a similar gloss effect without the UV setup. Raised printing using our SwissQprint UV flatbed can also produce a gloss, dimensional finish on individual sheets.

For full-sheet gloss coating rather than selective application, a gloss celloglaze covers the entire surface in one pass at a lower per-unit cost.

How we produce spot UV

The sheet is printed, celloglazed (typically matt or silk), then the UV varnish is applied to the specified areas using a screen or digitally controlled applicator. The sheet passes under a UV lamp that cures the varnish instantly.

We register the UV application against the printed artwork to ensure precise placement. Test sheets are run before production to confirm alignment and varnish weight.

Want to add gloss contrast to a card, cover or packaging design? Get in touch to discuss spot UV.

Frequently Asked Questions

Does spot UV add texture or just shine?

Both. The cured varnish creates a slight raised surface that is both visible and tactile. The gloss finish catches light while the matt base stays flat.

Can spot UV be applied to uncoated paper?

Yes, but uncoated stocks absorb the first pass of varnish. A second pass is needed for a clean gloss finish. The cost is higher but the tonal contrast on uncoated coloured stock is very effective.

What is the minimum run size for spot UV?

There is no strict minimum, but the setup cost means spot UV is most cost-effective on runs of 200 or more. For smaller quantities, digital foiling with clear foil may be a better option.

Can I combine spot UV with foil stamping?

Yes. Foil and spot UV can appear on the same sheet in different areas. They are applied in separate passes and complement each other well.

Does spot UV affect the colour underneath?

Yes, slightly. The gloss varnish deepens the apparent colour of the print beneath it. This is usually desirable but should be considered on colour-critical work.

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