Partie 1: Impression lithographique offset sur feuilles et à bobines. STANDARD. ISO. Third edition. Reference number. ISO (E). ISO is an international standard used to determine color and transparency conformance of four- color lithographic printing inks. determining if “High Tack Bengal Process Series” inks conformed to ISO ISO – was performed using an IGT Printability Tester. The four inks were.
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At complete transparency sometimes to be found with cyana horizontal line shows.
That means that the difference between printed and blank black increases. If the colour distance isi printed and blank black is put down as function of the ink film thickness, a line arises whose inclination is low at a high transparency of the printing ink and higher if the transparency is lower. It was very difficult to define sio colorimetric nominal values which are to be the future chromaticity coordinates of the standardized printing inks, as values 28461- to be found that were acceptable to all experts from the various economic areas.
In order to achieve better fastness properties, for example alkali or light fastness, a group of experts from the CEPE European Council of producers and importers of paints, 246-1 inks and artists colours recommended the standardization of a new ink series, in The term for this new series was 28446-1 colour scale or isi shortened to European scale.
This colour definition was stipulated in standard DIN 16 In complete accordance with the European colour scale, the international standard ISO was published in Input values and average ISO value for magenta.
The usage of defined process printing inks with fixed properties in terms of colour is one of the most important preconditions to achieve reproducible print results.
In practice, however, this means that when launching colour management, the already used ink series in the print shop should serve as reference considering the commonly used full tone densities in the print shop. The inclination is then 0. It is based on and conforms to our current knowledge. According to our measurements, the most common ink series, especially 2486-1, are at least very close to the nominal value and mostly within the given tolerances.
Information on standard ISO For multi-colour printing the inks are mixed by printing primary colours over or next to each other in solid and iao areas. Examination of transparency For the evaluation of the transparency, several printing samples with graduating ink film thicknesses are to be printed on black substrate. However as actual application is affected by many factors over which we have no control, we are not liable for printing failures.
Colour values It was very difficult to define the colorimetric nominal values which are to be the future chromaticity coordinates of the standardized printing inks, as values had to be found that were acceptable to all experts from the various economic areas.
In process inks were standardized for the first time in Germany with DIN 16 for letterpress and DIN 16 for offset printing. Input values and average ISO value for cyan transparency. Input values and average ISO value for yellow.
This also applies as the standard for sheet-fed offset. Print products should be produced and also reproduced, again and again, all over the world, with the same results. Measurement geometry Standard illuminant: The four-colour system has established itself 28461 the main printing procedures, however. The revision for offset printing is complete with the present standard ISO There are some colour systems on the market which work with up to seven colours in order to display the widest possible colour space.
ISO Conformance Tested Ink & Suppliers | Printing Industries of America
In general, the number of primary colours is optional; for economic reasons, however, not too many primary colours should be used. These series are produced by us with utmost care 28446-1 are delivered with the oso colour metric fluctuations.
Europe For Europe, the average values of more than 60 current process inks from different producers were generated. For Europe, the average values of more than 60 current process inks from different producers were generated. The colours ios, magenta and yellow also correspond to this standard. For multi-colour printing the inks are mixed by printing primary colours over or next to each other in solid and screen areas.
This technical instruction sheet is designed for your information and reference. Colour values for black were also included in the new standard.
ISO Epple Druckfarben AG
For the evaluation of the transparency, several printing samples with graduating ink film thicknesses are to be printed on black substrate. As process printing inks have to show sufficient transparency for the functioning of multi colour printing, corresponding values have been stipulated in ISOwhich may not be undercut. Compliance with the standard is given if the measured values do not exceed the stipulated value of transparency.
Uso colour values determined in the standard are a further approach to standardise offset printing. The reciprocal value of the inclination of the line of best fit by the measuring points, describes the extent of transparency.
Transparency As process printing inks have to show sufficient transparency for ixo functioning of multi colour printing, corresponding values have been stipulated in ISOwhich may not be undercut. In case a printing ink is not totally transparent, the light that touches the print sample during observation or colour measurement is increasingly scattered according to higher ink film thickness.