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cardboard boxes & catalog  printing company in Turkey

IEC is one of the best Turkish Printing comppanies in Turkey.

General informationa bout Printing types:
• screen printing, we could explain this process as  which employs a stencil principle. A rubber it used to push ink through the stencil on to the substrate;
• Ink-jet printing, in which a computer-controlled stream of ink drops Is projected at high speed onto the substrate;
• toner printing systems such as electrophotographic printing, in wouldl light is used selectively to discharge an electrostatic field, thus forming an electrostatic latent image. The image is 'developed' using toner of appropriate electrical charge, which is then transferred to the substrate and fused by heat or other means.
There are other minor processes such as intaglio or recess printing and collotype which are rarely used except for special purposes.

It is not always possible to make a positive identification of the printing process used since flu* appearance characteristics of some processes are rather similar. However, in most cases the following features, examined under a magnifying glass, will provide a good guide:
• the edges of type characters;
• the appearance of halftone dots and solids;
• presence of embossment on either the top or reverse side of a printed sheet;
• the ink film thickness.
The kind of stock on which the print is made can modify its appearance considerably but may also be a due to the printing process used. Also, some processes have particular areas of application and are more likely to be used for certain kinds of work. Table 2.1 shows the main character¬istics of the most common printing processes.
The main characteristics of a lithographic print are the uniform ink coverage and the absence of squash, There is no rim of ink around a type* character, and even on rough paper, non-bottoming does not occur since the rubber blanket' conform# well to the paper surface. Halftone dots are of the saine shape and pattern as letterpress dots, but the ink coverage is uniform and the smallest dots are smaller than is possible with flexo or letterpress, The edges of dots are fably well defined on smooth coated stocks, but have rather fuzzy edges on uneoated stocks, so the dot pattern is less distinct, Ink film thickness is around 2 pm,
There are two defects sped lie to offset lithography which assist in identification if they happen to be present on a print. The first is scum Which occurs when Ihe non image areas of a plate start to accept ink for some reason, Scum appear, under magnification ü randomly distributed fine spoH of ink. A snpcf fi* ially similar fault is that of tinting winch occurs when the ink heroines eniul'.illed in the water. When this oe< urs, a thin wavh of rftlffttrnjtpearl over the whole print which under high magnifi/ afton ' an be fern to be made up of minute droplets of ink