Dictionary

Backlite mode is used for printing on materials intended for illumination (fabrics, foils, plexiglass). This is a printing mode in which a double layer of ink is applied to maintain vivid colours when illuminated. This mode is suitable for areas where permanent illumination occurs.
Bleed (also print on bleeding) is the overlap of a printable document which prevents a narrow strip of unprinted area from appearing at the edge. The bleed must be used for all printed materials where the colour should be up to the edge.

The document containing the bleed is always printed on a print sheet larger than the intended size of the final printed matter, and must contain crop marks, according to which it is cut to the required format during subsequent processing.

An unwritten standard is a 3-5 mm wide bleed. Depending on the printing technology used and the further processing, a larger or smaller bleed may be required.
The CMYK colour model is based on subtractive colour mixing, where white paper is covered with inks, reducing the colour spectrum reflected from the paper surface. That is why it is called subtractive - subtraction of colours.

Theoretically, it would be enough to mix inks of three CMY colours - Cyan, Magenta, Yellow, to generate all colours. In practice, however, a fourth colour Black is used, which helps to print typically black text, reduces the cost of printing and helps to mix dark shades. The CMYK colour model is used in printing and needs external light to generate white by reflection from the paper.
The principle of day and night printing is to print two identical images with a white layer between them. This mode provides a day view without illumination and a night view with illumination without colour fading.
You often come across the acronym DPI for printing. It comes from English, where it represents the combination of the words dots per inch. The value indicates the number of pixels which fit per inch (1 inch = 2.54 cm). So a value of 300 DPI says that you will find 300 points on a length of 2.54 cm. Each printer has its own DPI parameter, and in general, the larger the DPI value, the more detailed the resulting printout.

DPI refers to the physical size of an image that is reproduced as a real physical entity, such as printed on paper or displayed on a monitor. There is no "natural" physical size (measured in inches or centimeters) for a digitally stored image. Some digital file formats record the DPI value to be used when printing. This number provides the printer with information about the intended image size. For example, a bitmap image can measure 1,000 × 1,000 pixels. If it is marked as 250 DPI, the actual size will be 4 × 4 inches. Changing the DPI to 100 would resize it to 10 x 10 inches. However, changing the DPI value would not change the size of the image in pixels, which would remain 1,000 × 1,000.
The final print format is then cropped to a clean size by finishing. The product is cut by bleed into a square or rectangle according to the specified dimensions and according to the parameters of setting the crop marks into the resulting clean document format..
Coating the print with plastic film, which ensures higher resistance to damage, dirt, soaking and UV radiation. The lamination can also be decorative, which gives the final product the appearance of leather, wood or brushed metal.
Latex printing has a scratch-resistant ink with the latest generation, which is comparable to hard solvent inks. Colour fastness for exterior applications reaches 3 years without lamination and 5 years with lamination. Thanks to its composition, it also meets all the requirements for ecological printing, which can represent a great competitive advantage for such oriented advertisers.

The advantages of this printing method are resistance to UV radiation, water and also mechanical damage.
POS – Point Of Sale / POP – refers to point of purchase, and sometimes the activities or materials used for point-of-sale communication. They communicate the price, operate at the point of sale, support the product and its communication.
This type of graphics is sometimes also referred to as bitmap graphics. The final image is folded into a grid of a certain number of points, each of which carries information about the colour used.

The quality of image recording is mainly affected by resolution and colour depth. The placement and number of colour dots usually correspond to the device on which the image is rendered (monitor, printer). If the image is displayed on the monitor, then a resolution of 72 DPI is usually sufficient, for printing on a printer 300 DPI.
The RGB colour model contains three basic colours, R - red, G - green and B - blue. The assumption of the model is that the light of these colours emitted into the surroundings composes other colours - a combination of red and green creates yellow, a combination of all colours of the model gives white. Therefore, the model is called an additive way of mixing colours. Black, on the other hand, is created so that no colour is emitted.

The RGB colour model is used in devices which emit light, such as computer monitors, data projectors, televisions, etc. Each pixel on the screen is represented on the computer as values ​​for red, green, and blue. These values ​​are converted to electrical voltage via gamma correction and the intended intensity is reproduced on the display. Commonly, today, displays use 24 bits per pixel - 8 bits for each of the colours having a range of 256 (0-255) possible intensity values ​​for each colour.

The basic models of the RGB model are not precisely specified, so more RGB models have been created. The best known and most widespread is the sRGB model, which is a standard of the Windows operating system. Another representative of the RGB model is the AdobeRGB model, which was created by Adobe in 1998. It is based on slightly different basic colours and thus contains a larger gamut than the sRGB model, especially in shades of green-blue. There are also a number of other RGB models which are not widely used in practice.
The final material print is then cut to the desired shape according to the created cutting contours (CutContourCut). By using a shape cut, any shape of the final format of the sticker, board and other materials can be achieved.
UV printing machines allow printing as for flexible (roll) and solid (plate) materials. The advantage of this printing technology is the ability to print directly on any material, including glass. The print is immediately dry and ready for shipment to the client. This UV printing technology is the only one that allows printing with white ink to cover dark surfaces or as a background when printing on clear media.
Vector graphics is one of the two basic ways of representing image information in computer graphics. While in raster graphics the whole image is described using the values ​​of individual colour points (pixels - px) arranged in a rectangular grid, a vector image is composed of basic, precisely defined shapes, such as points, lines, curves and polygons. The biggest advantage is any reduction or enlargement of the image without loss of quality.

The theoretical basis of vector graphics is analytical geometry. The image is not composed of individual points, but of curves - vectors. The curves connect the individual anchor points and can have a defined fill (colour area or colour gradient). These lines are called Bézier curves.