JEC IEC62899-302-6 Edition1.02025-05 INTERNATIONAL STANDARD Printed electronics- Part302-6:Equipment-Inkjet-Firstdropmeasurement IEC 62899-302-6:2025-05(en) ICS 19.080; 37.100.10 ISBN 978-2-8327-0414-1 THISPUBLICATIONISCOPYRIGHTPROTECTED Copyright@2025IEC,Geneva,Switzerland by any means,electronic or mechanical, including photocopying and microfim, without permission in writing from either IEC or IEC's member National Committee in the country of the requester.If you have anyquestions about IEC copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or your local IEC member National Committee for further information. IEC Secretariat Tel.: +41 22 919 02 11 3, rue de Varembe
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[email protected]. Warning!Make sure that you obtained this publication from an authorized distributor. IEC62899-302-6:2025IEC2025 -2 CONTENTS FOREWORD 3 INTRODUCTION. .5 1 Scope.. 2 Normative references... 3 Terms,definitionsandabbreviatedterms. 3.1 Terms and definitions... 3.2 Abbreviatedterms... 4 Inkjet first drop measurement.. 4.1 General... 8 4.2 Process for printing-based method.. 8 4.3 Processforhighspeedcameraimaging-basedmethod .9 4.4 Processforsingleflashimagingbasedmethod. 10 5 Recordedoperatingparametersfordropspeedmeasurements 11 AnnexA(normative)Keyconsiderationsforinkjetfirstdropmeasurement ..12 A.1 Printingmeasurement.... .12 A.2 Highspeedcamerabasedmeasurement. A.2.1 General.... 15 A.2.2 Measurement steps using high speed camera. 16 A.2.3 Analysis method of acquired images. 18 A.2.4 Jetting speed measurement forfirstdropanalysis.. .20 A.3 First dropmeasurementusing imaging device(CCD camera)with flash light source, 22 Bibliography. .24 Figure A.1 - Typical first drop effect. 12 FigureA.2-Jettingspeedeffectsondropplacement .13 Figure A.3-Patterns for first drop evaluation... Figure A.4-Practical guidelines to obtain acceptable printing accuracy 15 FigureA.5-Visionmeasurementbasedonhighspeedcamera. .16 Figure A.6-Triggerbased image acquisition and jetting forfirst dropmeasurement.. Figure A.7-Non-jetting pause time effects on the first drop jetting speed Figure A.8-Sorted drop images (ink type A) .19 Figure A.9-Sorted drop images (ink type B). .19 FigureA.10-Two jetting images of a droplet, to calculate jetting speed FigureA.11-Jetting speed calculation from the droplet locations at two timings.. ..21 Figure A.12-Jetting speedbehaviour accordingto non-jetting time. .21 FigureA.13-Timi