BS ISO 2834-1:2020 pdf free.Graphic technology一Laboratory preparation of test prints.Paste inks.
BS ISO 2834-1 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, using electrically driven IGT-type and prifbau-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 described procedures are also applicable in analogy to the older models but can require additional steps to be executed 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 content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 5-4, Photography and graphic technology一Density measurements一Part 4: Geometric conditions for reflection density ISO 187 Paper, board and pulps一Standard atmosphere for conditioning and testing and procedure for monitoring the atmosphere and conditioning of samples ISO 2846-1, Graphic technology – – Colour and transparency of printing ink sets for four-colour printing一 Part 1: Shet-fed and heat-set web offset lithographic printing ISO 5631 (all parts), Paper and board一Determination of colour by diffuse reflectance ISO 13655, Graphic technology 一Spectral measurement and colorimetric computation for graphic arts images.An electrical driven device, used to generate a uniform ink film on the printing form, consisting of two inking drums or rollers having contact with a top roller covered with a rubber or other elastomer with  specific quality for the test and the ink system. At least one of the inking drums shall oscillate to induce a sideways distribution of the ink. The ink distributing surface area A of the rollers shall be known to the nearest 0,1 cm2. Each inking arrangement shall incorporate one or more holders on which the printing forme can be mounted to be inked.BS ISO 2834-1 pdf download.