Perhaps you know this: Your T-shirt has been printed, marvellous green, yellow, blue tones adorn the substance. You frequently attract it in summer which is hot in which often seems the sun: What happens? The colours bleach. The less they do this, the more colourfast they are. With the help of the blue wool scale this colour fastness of colours is, the UV light you stop, measured. The scale reaches of 0 (very little non-fadely) to 8 (very non-fadely). On the one hand, a wool stripe which is coloured with eight blue tones serves as a comparison, the respective lightfastness shows different and known to the testers values: Of very low till very big. The colour to be tested is then applied on the test material (at best on what she shall be printed later). The half of the coloured test material is not, covered the other half. A xenon lamp then usually feigns sunlight and one tests with a comparison of test material covered and not covered and colour to be tested this one with the help of the blue wool stripe how strongly is from bleached. The method is standardized.

This word has a meaning also in the printer's language, though. It stands for a dirty pressure at which the ink a little runs, for example the letters do not seem marked at the document pressure clearly through this. The transitions become blurred during the pressure at pictures, through what the printed picture seems blurred. There are several possible reasons for the Bleeding: For example an unsatisfactory medium at which you print. The ink then only draws approximately badly into a paper, one the repletion limit is reached too fast. A good printing paper is therefore coated often. Reason for Bleeding also could be itself which can only badly be fixed on the paper the ink.

Blueback is the name of a special paper, advertising, this particularly at posters for the outside and inside is used. The back of the paper is blue. Thanks to the blue colouring she covers the motives posters on advertising spaces of with the poster of her own, überklebten different one, particularly good off. The paper is suited for the outside area very well due to his qualities. Firm, wind also stay with wetness and betters attack it only conditionally. Through this a poster absolutely forms three months of the outside area. Blueback is used, however, also at sceneries and photo wallpapers. Blueback paper is usually printed with solvent ink at which the pigments are solved in a medium like embittered Ethanol.

This abbreviation stands for bitmap, a graphic file format developed for the enterprise Microsoft. So the respective pictures are built up some colour information from many single pixels of which everybody has his own RGB value. RGB answers (for red/green/blue Green/Blue talk/) and is a colour system which builds up primary colours on these three and develops all other colours from this. Picture information can be saved with 1, 4, 8, 16, 24 or 32 bpp in the bitmap format. The abbreviation bpp means here bits per pixel (therefore bits per pixel), how a pixel is a single colour point of the picture and a bit of the smallest unity of the information storage in the computer. If some colour information is saved with more bits, more colours can be represented. Bitmap graphics files consist of a header and the real bitmap data. While the header contains information about graphic size and colour depth approximately, the colours of every single pixel of the graphic are defined in the bitmap data. Graphics saved as a bitmap usually take up much storage and therefore are not suitable for Internet graphics

Almost any picture which you see in your graphics program is a Composite file, a file in which the colour information completely becomes dargstellt. We take once a single microdot and its colour as an example. In the CMYK colour system he becomes in color Cyan with him-(green blue) -- money (Yellow) his magenta (violet red) and his defines shares. K stands for Black. This colour mixture which yields a hue of its own is shown at every microdot in the Composite file now. For the pressure this file gets, however, self-contained in the single primary colours. We get a picture only with the Cyananteilen of the microdots, one for the magenta shares, for Yellow and for black. From the Composite (mix-) -- four single files become file. As a Composite file, more simply can be edited a graphic as if she has been separated. Composite files also conserve the resources of computers; they are smaller than the four self-contained files and must be calculated by the computer less intensively.

The print view is transferred by a computer directly to a printing press at the digital printing. This is a laser printer conceived for higher editions mostly which represents an electrophotographic system and frequently also takes over postpress tasks like blades or bandages. Modern digital printing systems have a storage medium on which the pressure documents can be safeguarded.

Among other things the digital printing is different from the offset printing by the fact that no firm printing form is needed. This makes possible a printing every single sheet individually and has proved to be extremely economical. The operation is dropped since multi-page publications can be printed directly in the correct order the collect in a machine designed for sorting work extra.

Meanwhile, the digital printing finds many different application fields, e.g. in the direct marketing or the pressure of books with low edition numbers which would not be worthwhile in the offset printing.

The digital printing is a special printing process at which the computer transfers the desired print view directly to a printing press. Because of the high flexibility of the digital printing this printing process is particularly environmentally harmless. By the digital administration of the data and therefore also the respective print view it is possible to update the respective print job also short time before. An unnecessary waste of Druckmaterialen therefore gets very low and is printing not required copies also discontinued, excluded almost. You very frequently use as printing system of the laser printers but ink-jet pressure finds poster at this printing process to use, primarily then, too, if extensive or banners shall be printed. Particularly of advantage the very high quality which always remains unchanged and is therefore very exact at a high pressure edition, too is not cares completely identical at the digital printing process, whether you print colouredly or black whitely. The digital printing Indoor can in this and in the Outdoorbereich is used similarly, of smallest visiting cards about personalized pictures up to extensive fair graphics everything is possible, because the variety of the digital printing does not know any limits. If the digital printing is used for the Aussenwerbung, is to take into account that the ink point marking jet coloured printing inks Aussenbeständigkeit should have which is reached by solvent based coloured printing inks, the ready pressure is particularly kratztfest later and the colour is liable particularly well. The digital printing comes primarily when printing from bridge banners, big areas, making panels, signposts, flags, container advertising, advertizing columns or as a motor vehicle marking for use in the area of the Aussenwerbung. In the Indoorbereich shopwindow decoration, museum equipment, event designs, are however also small documents to be used in the office to print.

"DPI" is a short cut. Stands for "Dots per inch" and indicates, like many microdots contains an inch of a picture or shall containedly, in which an inch of 2.54 centimetres corresponds. The more microdots it a picture contains, the better can represent colour courses and transitions, for example without these seeming screened (with clearly differentiable areas of colours). Relatively low values see having the observer every single microdot of the picture, extremely low make it impossible to recognize the picture motive. While at pictures a value of 72 dpi usually suffices on the Internet, at least 300 dpi are already required for a really good expression. With the unity "dpi" one can describe the density of the colour points in a picture. However, one also can which maximum density an output device show off with her, (e.g A printer reaches). Details are made approximately to 300 dpi x 300 dpi in the form in which the values stand for length and breadth.

The so-called by pressure also is described as a silk-screen print because the manner of printing actually works a little just like sifting. What shall be printed is applied with the help of the photography or also by hand as a stencil on a fabric. The printer colour is sifted by the stencil virtually now. The places of the printing substance (e.g. paper) which shall not be printed are covered. So it is main feature of the by pressure that the coloured printing ink is pressed by the vacancies of a stencil. Mostly, the fabric used at the silk-screen print consists of polyester which has replaced the silk used before. Also nylon or fine steel fabrics are used from time to time. As an advantage of the silk-screen print applying the colour relatively thick and good on the printing substance counts. Silk-screen print is a very flexible printing process: Clothes substances are approximately, besides this for example acrylic glass and ceramic also printed next to paper with him.

EPS stands for Encapsulated PostScripts. Such as bitmap or JPG EPS belongs to the graphic file formats. A whole number of printeries prefers the EPS format if it is about the question how customers deliver the presentation for a digital pressure. Whole page layouts can be stored, the both vector contained like grid graphics and text with the EPS format. On the one hand, EPS files remain unchanged on all sorts of computer systems (approximately Mac and PC), they can contain all documents used in the document to be printed and on the other hand, are scalable without the graphic losing quality (scalably = reduce or extend, in the same relations to each other how the individual elements of for example a page layout stop). EPS files contain a pre-diagram and make it possible to store it, the overall picture already with self-contained colours (what this means: see Composite file). A disadvantage: Often, EPS files cannot be reworked.

Pressure and original file (e.g. original photo) usually differ in color a little from each other. This difference is expressed by the concept colour distance. Generally can be said: The lower the colour distance between original and pressure, the better were the pressure. It is said delta E 5 for clear colour differences the colour distance with the device of delta E. delta E 1 stands for low. To be meaningful, the colour distance must orientate itself at a predefined colour space. In colour spaces (examples: RGB colour space, HSV colour space) . be certain values which allow a clear regulation of hues assigned to colours. The L*A*B* colour space is usually used. The computing is defined for so-called body colours in the DIN 6174. One describes the one as body colour which arises by the fact that a body (object) only throws back certain wavelengths of the light, absorbs others. If the colour distance is too large between original and pressure, the customer can usually of a professional pressure mode demand free stress.

So-called pigment inks are inks with a high colour brilliance. You contain pigments of high purity, water usually distilled to this and additional means. Pigments are different from pigments by the fact that you come loose completely in the solvent, so in the distilled water to have left at the example and ink it. Pigment ink is produced in a pure room therefore in an almost dust-free room. A mixer mixes the individual components to the ink which is then filtered and filled into containers dust-freely. With this ink one can do almost perfect expressions of produce pictures; however, these expressions primarily are good without further processing for use in interiors. There could be problems in the outside area without laminat since the pigment ink is attacked sooner than other inks and is not also waterproof of UV light.

The concept "colour depth" has two a little different meanings, depending on, whether one speaks about a colour or about the colourfulness of a computer graphics generally. If one uses him in connection with colours, then he stands besides similar concepts like colour repletion, colourfulness or grey amount of a colour. The colour depth is, measured the bigger the grey share the lower the colour depth with her grey share here, for example. The concept colour depth also stands for two meanings at computer graphicses: Colours are stored as RGB colours, for example. This means every colour is put together by the three colour channels red, green, blue. By a different mixture of the colours also many other colours then can be represented. In this case colour depth stands for the number of information units, measured in bits which are at every colour channel's for the storage of the hues disposal: Only if the green channel had approximately the colour depth of a bit, then either black or a green tone could be represented. If two bits are available, then 22 possibilities at 8 bits of 28 = 256 possibilities to represent different green tones would arise. The concept colour depth also can stand for the number of bits with which information about every pixel of (colour point) of a picture is saved on the other side. The more bits are available to the information storage per pixel, the more colours can be represented at every pixel" has two a little different meanings, depending on, whether one speaks about a colour or about the colourfulness of a computer graphics generally. If one uses him in connection with colours, then he stands besides similar concepts like colour repletion, colourfulness or grey amount of a colour. The colour depth is, measured the bigger the grey share the lower the colour depth with her grey share here, for example. The concept colour depth also stands for two meanings at computer graphicses: Colours are stored as RGB colours, for example. This means every colour is put together by the three colour channels red, green, blue. By a different mixture of the colours also many other colours then can be represented. In this case colour depth stands for the number of information units, measured in bits which are at every colour channel's for the storage of the hues disposal: Only if the green channel had approximately the colour depth of a bit, then either black or a green tone could be represented. If two bits are available, then 22 possibilities at 8 bits of 28 = 256 possibilities to represent different green tones would arise. The concept colour depth also can stand for the number of bits with which information about every pixel of (colour point) of a picture is saved on the other side. The more bits are available to the information storage per pixel, the more colours can be represented at every pixel

One describes all work steps as a "Finishing" which arise after the real pressure for the production of a pressure end product. You can serve to improve a pressure product or to make more robust, for example: The printed can be laminated approximately to this, joined with a lock seam or perforated, punched. Printed paper turns into flyers, Leporellos, posters, books, creative sales letters, protected from wind and weather. Special Finishing work steps can secure special attention for the pressure product: So approximately special hologram foils can be trained. Particularly offers in the "Finishing" offer printeries the possibility of standing out artistically from the competition. Printeries count the delivery of the end products as one of the "Finishing" from time to time, too

The Flexprint is a direct rotation printing process and is mainly applied in the packing pressure. The Flexprint is also used in the multi-coloured newspaper pressure as well as for printing from corrugated cardboards, napkins or wallpapers.

The principle of this printing process is based on a flexible, photopolymer printing plate which is inked by a rotating grid roller. The raised elements of the printing form transfer the colour directly to the printing substance.The printing form which consists of rubber or synthetic material with a laser engraving is produced. This also makes possible reproducing graphics.

Coming in the Flexprint to make colours possible for use, base this one on solvents and water and the print the most different materials uncomplicated which are low viscous and drying fast.Flexprint maschine consist of up to ten publications which are ordered mostly in satellite style. This machine type needs a lower room than the flexprint maschine designed in increase top-hat compact or row style.

Publications produced in the Flexprint can be recognized by the squeezing edges and lack by shades.

One understands a special printing process by the so-called foil cut at which a certain motive is cut out of a coloured foil with the help of a cutter plotter. Before, this motive is selectly or personally arrangedly and then transferred at the computer to the plotter which prints the desired motive exactly and reliably and provides it with a transfer foil. By means of this self-adhesive transfer foil it is possible after a successful pressure very simply to transfer the motive to the object to be stuck on. Before this can happen, however, the surplus colour foil is removed by hand so that the desired motive is only left later and only this is applied under great heat on the printable area, for example one T-shirt, at long last, too. By the special coating and composition of the used colour foil this is UV and weatherproofly and also for the washing machine suitably as well as heat-resistantly C and resistant against most greases, oils and weak acids up to 90°. Since this method is particularly flexible, small logos or größerflächige pictures let themselves cut all sorts of motives out such as strokes, in which documents can be made with a letter height between 1.5 centimetres and up to 200 centimetres. The foil can then be transferred to textiles, vehicles or boats among other things. The durability is the Hatlbarkeit of these foils depending on the respective foil type and almost lies in the area of the Aussenwerbung between 3 and is in the area of the inside advertising up to 10 years unlimitedly. The foils are by coloured, they can be attached also on glass areas and are then visible well from the two sides through this, that.