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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
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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 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.
This document excludes the standardization of any kind of measurement equipment or system.
It focuses on specifying the properties related to edge waviness of the printed patterns
obtained by an optical measurement system.
– 6 – IEC 62899-402-2:2020 © IEC 2020
PRINTED ELECTRONICS –
Part 402-2: Printability –
Measurement of qualities – Edge waviness
1 Scope
This part of IEC 62899 describes the measurement methods of the edge waviness of printed
patterns in printed electronics.
2 Normative references
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 291, Plastics – Standard atmospheres for conditioning and testing
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1
inner edge
line drawn in a tangent to the innermost edge point and parallel to the pattern's centre line
3.2
test line
selected line on a sample pattern edge (parallel to the inner edge) to test the edge waviness
3.3
background gray value
gray value of the line which is in the area without any printed patterns and parallel to the inner
edge
Note 1 to entry: A centre line between two adjacent printed patterns is recommended.
3.4
average edge
1σ edge
distance to the inner edge of a gray ratio of more than 0,68 (single standard deviation in
Gaussian distribution)
3.5
relative gray value
RGV
relative gray value of the line to the background gray value
Note 1 to entry: RGV can be o
...