ISO 2834-1-2020 pdf free

04-24-2021 comment

ISO 2834-1-2020 pdf free.Graphic technology – Laboratorypreparation of test prints — Paste inks.
This document specifies a test procedure for the preparation of test prints on paper, board, metals,foils and other suitable substrates using paste inks,such as for offset and letterpress printing, usingelectrically driven IGT-type and prufbau-type printability testers.
This document describes the procedure for reference optical density and reference ink film thickness.This document describes the method as used on the current models of testers.Most of the describedprocedures are also applicable in analogy to the older models but can require additional steps to beexecuted or recalculation of the settings to make them conform to this document.
The following documents are referred to in the text in such a way that some or all of their contentconstitutes requirements of this document. For dated references,only the edition cited applies. Forundated references, the latest edition of the referenced document(including any amendments) applies.ISO 5-4,Photography and graphic technology —Density measurements—Part 4:Geometric conditions forreflection density
ISO 187,Paper; board and pulps — Standard atmosphere for conditioning and testing and procedure formonitoring the atmosphere and conditioning of samples
ISO 2846-1,Graphic technology —Colour and transparency of printing ink sets for four-colour printing —Part 1: Sheet-fed and heat-set web offset lithographic printing
IS05631 (all parts), Paper and board — Determination of colour by diffuse reflectance
ISO 13655,Graphic technology — Spectral measurement and colorimetric computation for graphicarts images.
For the purposes of this document, the following terms and definitions apply.
breaking-in:roller conditioning
preparation process for new rollers or before using another ink system (3.4)
Note 1 to entry: Run rollers in an (or another) ink system to condition the elastomer until constant readings areachieved. See Annex B for the procedure.
ink <printability> fluid to be printed under the conditions of this document
Note 1 to entry: It can be a commercial printing ink, a modified ink for the purpose of the test, a simulant like picktest oil, a varnish and other materials which create a print under the conditions as specified in this document.
inking device:separate or integrated part of the printability tester(3.6)used to distribute the ink in a uniform way ona roller system from where the printing forme(3.7) can be inked with a known amount of ink.
ink system:range of inks which are comparable with regards to varnish system and liquid baseNote 1 to entry: For paste inks there are e.g.oxidative, setting and Uv curing systems.
packing:underlayment under the sample to be printed
Note 1 to entry:This is used for mechanical protection or to simulate the hardness of the impression in printingpractice or to accentuate the effects of the test on the printed image.ISO 2834 pdf download.

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