High-quality coated and smooth paper and cardboard are ideally suited for achieving an outstanding rendering of metallic color tones and effects. Glossy photo printing paper varieties fulfill these requirements very well.
Matt coated papers deliver a less smooth surface. To achieve a matt effect, an alternative solution is to coat glossy photo printing paper with a matt lacquer. Uncoated and structured paper varieties are not generally recommended.
Hight quality materials
Photo paper includes all coated papers with a grammage from 70 to 170 g/m2. Paper in the range 170 - 300 g/m² is referred to as photo card board. Photo paper can have a matt, semi-gloss or glossy finish, and is suitable for all printing processes. Photo paper is also often referred to as art paper.
The surface of these materials is treated with a binding agent ("coating"). The coating usually comprises chalk, china clay, casein and a plastic dispersion. This gives the material a non-porous, smooth and stable surface.
The coating is applied up to three times using a doctor blade, air knife or a ductor blade. After the application of this coating, all papers initially have a matt finish. To achieve a glossy paper/card, it is passed through a calender that smooths the surface as a result of the pressure applied by two rollers.
Picture book quality finishing
Photo printing materials are particularly suitable for cold foiling because they do not fully absorb the cold adhesive. This allows contours and half-tones to be rendered more accurately.
Here are a few examples of photo printing materials that have been successfully tested for use in cold foiling:
- Galaxi Brilliant
- Magno Star