Frequently asked questions
1. What is the difference between LWC, SC and MF-paper?
MF paper was originally intended for newspaper printing, in other words it has been developed from porous offset papers, which are uncoated. Attempts have been made to increase calendering to give them a smoother surface and thus make them suitable for gravure printing. SC paper on the other hand is super calendered uncoated paper, in other words paper that has been highly calendered (smoothed), but which contains quite a lot of fillers (pigments), which enhance the paper’s smoothness and printing properties. In LWC paper, pigment is added after making the actual base paper using a separate coating machine (or unit) to form a separate layer on the paper surface. This can provide greater paper brightness and better opacity than in uncoated papers.
2. What is the difference between offset and gravure printing?
Gravure is better suited for high volume printing, whereas the offset method is better for smaller runs. This is because the costs of preparing the printing surface are lower in offset than in gravure. It is much easier to change the size of a product in gravure than in offprint.
In gravure, as the name suggests, ink is transferred from recesses or wells in the printing surface. In offset (flat printing), the ink to be transferred and the undisplaced surface are at the same level, and the non-printable and printable areas works on the basis that fat repels water. In offset the inks are water-soluble and in gravure gravure toluene soluble.
The inks used in gravure are transparent. In other words they can be applied on top of each other, whereas offset inks are opaque and so cannot be. Instead the dots must be adjacent to each other according to a certain screen angle.
3. What is an ICC profile?
An ICC profile is a characterisation of a repro device (monitor, scanner, digital camera, matchproofer or a printing machine), which describes how the device “distorts” the colours in the original. ICC profiles are used in ICC Colour Management systems to remove this distortion. To make colour management work, the entire colour reproduction chain must support colour management from the photographer to the printer. For the printing plant, this means a standardised printing process for which ICC profiles have been made for particular paper grades. This means, for example, optimal scanning results already at the image scanning stage to give an output as close as possible to the original impression.
4. How much is the weight of the product?
You can calculate the weight of your product with this calculator (an Excel file).