The Monte di Luce project presents a comprehensive showcase of the technological possibilities of offset printing, combining high-quality print production with practical training. It has been developed as a joint project between the Graphic Design and Visual Communication studio at UMPRUM University in Prague, the Italian paper mill Cartiere del Garda, Europapier and Tiskárna Helbich. The result is a publication that clearly presents the key technical parameters of offset printing whilst offering inspiration for working with different types of paper.
The main aim of the project is to create an educational, practical and visually appealing guide intended for students, budding graphic designers, staff at DTP studios and anyone involved in the preparation of printed materials. The guide serves as a practical manual that helps users prepare print data correctly, highlights the most common errors in pre-press preparation and demonstrates possible solutions. At the same time, it showcases a selected portfolio of Garda papers and their use in combination with various printing technologies.
The publication is available in three languages – Czech, English and Italian – and is aimed not only at Czech users but also at those abroad. Thanks to the combination of specialist content, high-quality printing and well-designed layout, it serves as a useful resource for both study and professional practice, helping to improve the preparation and production of printed materials.
16 important technological parameters of offset printing
Conventional offset is sufficient for reproducing most printed matter. Some picture books, art monographs and certain magazines use UV printing, whose advantage is a richer reproduction of colour. This is because the inks are cured by UV radiation rather than by absorption and oxidation as in conventional printing. One drawback is that the printed area, especially on uncoated papers, looks noticeably glossier than the unprinted paper.
Printing colour and grey ramps shows how individual tonal values behave on a particular paper. It reveals where subtle shades merge and helps you decide how to handle them while preparing the data.
Offset turns tones into halftone dots. Screen ruling (lpi) and screen type – amplitude or frequency modulated – affect the sharpness of detail, the smoothness of gradients and how an image looks on coated and uncoated paper.
An image that works well as a small preview may fall apart at a large size – and vice versa. The sample book shows how image resolution and screening shape both the overall impression and the legibility of the finest details.
Inks never register perfectly on press. Correctly set overprint, knockouts and trapping prevent white gaps between colour areas and unwanted coloured fringes.
Black (K) alone looks flat on large areas. Rich black combines K with other process inks for a deeper, denser result – but total ink coverage has to be kept in check.
Lines that are too thin can break up or disappear entirely in print, especially when built from several inks or knocked out of a dark area. The sample book shows safe minimum weights.
Small type – especially with thin strokes, reversed out or built from several inks – quickly loses legibility. The sample book shows how small type can still be printed reliably on a given paper.
Spot colors are mixed in advance and printed as an ink of their own. Metallic spot inks contain metal pigments that give printed matter a sheen process inks cannot achieve; fluorescent inks glow more intensely and add a striking accent. Their final effect depends on the paper surface and cannot be shown accurately on screen, so it helps to see them in print.
A black-and-white photograph can be printed in a single ink, but duotone, tritone or a combination of black and grey spot inks offers a wider tonal range and deeper shadows.
At the ends of the tonal range, differences between shades disappear – highlights fade into the paper and shadows fill in. The sample book shows where these limits lie for each paper.
The same photograph can look very different on different papers and with different printing technologies. The sample book compares how saturation, contrast and colour rendering change.
Large areas of light tints are demanding in offset: small variations in ink density and the screen itself are easy to see. A spot colour or adjusted tonal values can help.
Halftone dots spread and grow during printing, so the image darkens. Dot gain is stronger on uncoated papers and has to be accounted for when preparing the data.
An ICC profile describes how colours behave on a particular paper and press. Choosing the right profile for coated or uncoated paper makes sure the result matches expectations.
Moiré is an unwanted pattern caused by screens overlapping at unsuitable angles, or by printing motifs with a regular structure such as textiles. It can be avoided by choosing screen angles carefully or by using frequency-modulated screening.
Conventional offset is sufficient for reproducing most printed matter. Some picture books, art monographs and certain magazines use UV printing, whose advantage is a richer reproduction of colour. This is because the inks are cured by UV radiation rather than by absorption and oxidation as in conventional printing. One drawback is that the printed area, especially on uncoated papers, looks noticeably glossier than the unprinted paper.
Printing colour and grey ramps shows how individual tonal values behave on a particular paper. It reveals where subtle shades merge and helps you decide how to handle them while preparing the data.
Offset turns tones into halftone dots. Screen ruling (lpi) and screen type – amplitude or frequency modulated – affect the sharpness of detail, the smoothness of gradients and how an image looks on coated and uncoated paper.
An image that works well as a small preview may fall apart at a large size – and vice versa. The sample book shows how image resolution and screening shape both the overall impression and the legibility of the finest details.
Inks never register perfectly on press. Correctly set overprint, knockouts and trapping prevent white gaps between colour areas and unwanted coloured fringes.
Black (K) alone looks flat on large areas. Rich black combines K with other process inks for a deeper, denser result – but total ink coverage has to be kept in check.
Lines that are too thin can break up or disappear entirely in print, especially when built from several inks or knocked out of a dark area. The sample book shows safe minimum weights.
Small type – especially with thin strokes, reversed out or built from several inks – quickly loses legibility. The sample book shows how small type can still be printed reliably on a given paper.
Spot colors are mixed in advance and printed as an ink of their own. Metallic spot inks contain metal pigments that give printed matter a sheen process inks cannot achieve; fluorescent inks glow more intensely and add a striking accent. Their final effect depends on the paper surface and cannot be shown accurately on screen, so it helps to see them in print.
A black-and-white photograph can be printed in a single ink, but duotone, tritone or a combination of black and grey spot inks offers a wider tonal range and deeper shadows.
At the ends of the tonal range, differences between shades disappear – highlights fade into the paper and shadows fill in. The sample book shows where these limits lie for each paper.
The same photograph can look very different on different papers and with different printing technologies. The sample book compares how saturation, contrast and colour rendering change.
Large areas of light tints are demanding in offset: small variations in ink density and the screen itself are easy to see. A spot colour or adjusted tonal values can help.
Halftone dots spread and grow during printing, so the image darkens. Dot gain is stronger on uncoated papers and has to be accounted for when preparing the data.
An ICC profile describes how colours behave on a particular paper and press. Choosing the right profile for coated or uncoated paper makes sure the result matches expectations.
Moiré is an unwanted pattern caused by screens overlapping at unsuitable angles, or by printing motifs with a regular structure such as textiles. It can be avoided by choosing screen angles carefully or by using frequency-modulated screening.