IEC 62899-402-2:2020
(Main)Printed electronics - Part 402-2: Printability - Measurement of qualities - Edge waviness
Printed electronics - Part 402-2: Printability - Measurement of qualities - Edge waviness
IEC 62899-402-2:2020(E) describes the measurement methods of the edge waviness of printed patterns in printed electronics.
This document includes the measurement procedure, as well as the definition of edge waviness and related attributes such as average edge, touch edge and distribution edge of edge waviness, which are quite different from those that appear in the printing of graphic arts or from etching processes.
General Information
- Status
- Published
- Publication Date
- 20-Aug-2020
- Technical Committee
- TC 119 - Printed Electronics
- Drafting Committee
- WG 4 - TC 119/WG 4
- Current Stage
- PPUB - Publication issued
- Start Date
- 21-Aug-2020
- Completion Date
- 18-Sep-2020
Overview
IEC 62899-402-2:2020 - part of the IEC 62899 printed electronics series - defines standardized methods to measure edge waviness of printed patterns used in printed electronics. The standard specifies an optical measurement workflow (image acquisition, instrument requirements, image preparation, data collection and analysis) and precise definitions of edge-related attributes-such as inner edge, test line, average edge (1σ), touch edge (2σ) and distribution edge (3σ)-based on relative gray value (RGV) distributions. It focuses on optical measurement systems and reporting; it does not standardize specific instruments.
Key topics and technical requirements
- Scope: Measurement methods for edge waviness to assess printability in printed electronics.
- Definitions: Clear terminology for inner edge, test line, ROI (region of interest), sampling length, and RGV-based edges (1σ, 2σ, 3σ).
- Atmospheric conditions: Standard atmosphere per ISO 291 - typically 23 ± 2 °C and 50 ± 10 % RH (tighter class-1 limits for plastic substrates where specified).
- Image acquisition:
- Field of view must include a statistically significant edge length and at least five cycles of peak/valley within the sampling length.
- Lighting must be uniform; optics must provide sufficient depth of field.
- Instrument recommendations:
- Optical microscope with at least 20× magnification.
- Visible light sources (halogen, LED).
- CCD or CMOS sensors (8 megapixels or higher suggested).
- Analysis software: Must read gray values and compute RGV, produce distribution graphs correlating distance from inner edge (x axis) with RGV ratio (y axis).
- Reporting: Test identification, instrument specifications, atmospheric conditions and numerical results (average/touch/distribution edges and distribution graphs).
Applications and users
IEC 62899-402-2 is practical for:
- Printed electronics manufacturers and process engineers validating printability and edge quality of conductive ink traces, printed circuits, sensors and displays.
- Ink and substrate developers optimizing formulations to reduce edge waviness.
- Quality control and metrology labs performing reproducible optical edge measurements.
- Equipment suppliers (scanners, microscopes, imaging systems) who need to align product capabilities with standard requirements.
Practical benefits include objective, repeatable assessment of printed pattern edge amplitude, improved process control, and better comparability across suppliers and production lines.
Related standards
- ISO 291 (standard atmospheres for conditioning and testing) - referenced for environmental conditions.
- Other parts of the IEC 62899 series (Printed electronics) for broader printability and measurement guidance.
Keywords: IEC 62899-402-2:2020, printed electronics, edge waviness measurement, printability, ROI, relative gray value, optical measurement, sampling length, microscope, CCD, CMOS.
Frequently Asked Questions
IEC 62899-402-2:2020 is a standard published by the International Electrotechnical Commission (IEC). Its full title is "Printed electronics - Part 402-2: Printability - Measurement of qualities - Edge waviness". This standard covers: IEC 62899-402-2:2020(E) describes the measurement methods of the edge waviness of printed patterns in printed electronics. This document includes the measurement procedure, as well as the definition of edge waviness and related attributes such as average edge, touch edge and distribution edge of edge waviness, which are quite different from those that appear in the printing of graphic arts or from etching processes.
IEC 62899-402-2:2020(E) describes the measurement methods of the edge waviness of printed patterns in printed electronics. This document includes the measurement procedure, as well as the definition of edge waviness and related attributes such as average edge, touch edge and distribution edge of edge waviness, which are quite different from those that appear in the printing of graphic arts or from etching processes.
IEC 62899-402-2:2020 is classified under the following ICS (International Classification for Standards) categories: 31.180 - Printed circuits and boards. The ICS classification helps identify the subject area and facilitates finding related standards.
IEC 62899-402-2:2020 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
IEC 62899-402-2 ®
Edition 1.0 2020-08
INTERNATIONAL
STANDARD
colour
inside
Printed electronics –
Part 402-2: Printability – Measurement of qualities – Edge waviness
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IEC 62899-402-2 ®
Edition 1.0 2020-08
INTERNATIONAL
STANDARD
colour
inside
Printed electronics –
Part 402-2: Printability – Measurement of qualities – Edge waviness
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 31.180 ISBN 978-2-8322-8769-9
– 2 – IEC 62899-402-2:2020 © IEC 2020
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Atmospheric conditions for evaluation and conditioning . 7
5 Measuring methods and instruments . 8
5.1 Image acquisition . 8
5.2 Measuring instrument. 8
5.3 Analysis software . 8
5.4 Preparation of image (specimen) . 9
5.5 Data collection and analysis . 9
5.6 Obtaining edge waviness and related attributes . 12
6 Report of results . 12
6.1 Test identification information . 12
6.2 Instrument specification . 12
6.3 Results . 12
Bibliography . 13
Figure 1 – ROI image of the specimen, and inner edge and test line selection . 9
Figure 2 – Distribution graph of pattern edge waviness . 10
Figure 3 – Distribution graph of pattern edge waviness of the sample with a spike on
the edge . 11
Figure 4 – Distribution graph of pattern edge waviness of the sample with a groove on
the edge . 11
Table 1 – Reporting items (example) . 12
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
PRINTED ELECTRONICS –
Part 402-2: Printability –
Measurement of qualities – Edge waviness
FOREWORD
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International Standard IEC 62899-402-2 has been prepared by IEC technical committee 119:
Printed Electronics.
The text of this International Standard is based on the following documents:
FDIS Report on voting
119/310/FDIS 119/317/RVD
Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
– 4 – IEC 62899-402-2:2020 © IEC 2020
A list of all parts in the IEC 62899 series, published under the general title Printed electronics,
can be found on the IEC website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
INTRODUCTION
This part of IEC 62899-402 describes the measurement methods of printed patterns to
evaluate their printability in the field of printed electronics. Printability is defined as both the
qualities of printed patterns and the reproducibility of printing designs as the interaction result
of printing media, inks and substrates. The qualities of printed patterns are satisfied by
accurate measuring of the printed patterns two- and/or three-dimensionally with mechanical,
physical and optical apparatus. The reproducibility of printing designs is achieved by
estimating the reproducibility of replica. In terms of the business background, the requests
from the industry applying the printing technology to the electronics manufacturing concern
the guarantees of both the quality and reproducibility of printed patterns and printing designs
to facilitate international trade and enhance user value in the field of printed electronics.
This document provides fundamental information on the measurement of printed pattern edge
waviness to evaluate the printability in the field of printed electronics. An assurance of
printability enhances user value of printed electronics and facilitates international trade. This
document includes the measurement procedure, as well as the definition of edge waviness
and re
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