ISO/IEC 29112:2018

Information technology — Office equipment — Test pages and methods for measuring monochrome printer resolution

This document defines methods for the objective measurement of the print quality characteristics that contribute to the perceived resolution of reflection mode monochrome printed pages produced by digital electro-photographic printers. The measurement methods of this document are derived from several existing techniques for the assessment of an imaging system's resolution characteristics. Each of these measurement methods is intended for the engineering evaluation of a printing system's perceived resolution and is not intended to be used for purposes of advertising claims. The methods of this document are applicable only to monochrome prints produced in reflection mode by electro-photographic printing technology. This document is intended for monochrome printers utilizing PostScript®[1] interpreters capable of accepting PostScript and encapsulated PostScript (EPS) jobs. [1] PostScript® and Encapsulated PostScript® are registered trademarks for freely usable page description formats controlled and defined by Adobe Systems Incorporated. This information is given for the convenience of users of this document and does not constitute an endorsement by ISO/IEC.

Technologies de l'information — Équipement de bureau — Diagrammes et méthodes pour mesurer la résolution des imprimantes monochromes

General Information

• Status: Published
• Publication Date: 06-Nov-2018
• ICS: 37.100.10 - Reproduction equipment
• Technical Committee: ISO/IEC JTC 1/SC 28 - Office equipment
• Drafting Committee: ISO/IEC JTC 1/SC 28 - Office equipment
• Current Stage: 9060 - Close of review

Relations

• Revises: ISO/IEC TS 29112:2012 - Information technology — Office equipment — Test charts and methods for measuring monochrome printer resolution
• Effective Date: 05-Nov-2015

Standards Content (Sample)

INTERNATIONAL ISO/IEC
STANDARD 29112
First edition
2018-11
Information technology — Office
equipment — Test pages and methods
for measuring monochrome printer
resolution
Technologies de l'information — Équipement de bureau —
Diagrammes et méthodes pour mesurer la résolution des imprimantes
monochromes
Reference number
©
ISO/IEC 2018
© ISO/IEC 2018
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Fax: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii © ISO/IEC 2018 – All rights reserved

Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms, definitions and abbreviations . 1
3.1 Terms and definitions . 1
3.2 Abbreviations . 6
4 Print resolution characteristics — Methods for measurement and analysis .6
4.1 Conformance requirements . 6
4.1.1 General. 6
4.1.2 Test page conformance . 6
4.1.3 Printing process conformance . 7
4.1.4 Scanner characteristics conformance . 7
4.1.5 Measurement method conformance . 7
4.2 Native addressability . 8
4.2.1 General. 8
4.2.2 Method for measuring native addressability . 8
4.3 Effective addressability .10
4.3.1 General.10
4.3.2 Method for measuring effective addressability .10
4.4 Edge blurriness and edge raggedness .12
4.4.1 General.12
4.4.2 Edge blurriness .12
4.4.3 Edge raggedness . .13
4.4.4 Method for measuring edge blurriness and edge raggedness .14
4.5 Spatial frequency response .15
4.5.1 General.15
4.5.2 Printer SFR estimation from edge characteristics .15
4.5.3 Method for measuring printer SFR from edge characteristics .15
4.5.4 Printer SFR estimation from 1-D repeating patterns .16
4.5.5 Method for measuring printer SFR from 1-D repeating pattern characteristics .16
4.6 ROI size and shape variation .18
5 Test set-up, configurations and procedure .18
5.1 Printer set-up and configuration .18
5.2 Printer testing environment .19
5.3 Substrate .19
5.4 Test platform connection to the printer .19
5.5 Printing process .19
5.6 Test pages .19
5.7 Sample size .20
5.8 Set-up procedure .20
5.9 Testing procedure for visual evaluation .20
5.10 Testing procedure for scanner-based measurement .21
6 Presentation of results .21
6.1 General .21
6.2 Required assessment configuration documentation .22
6.3 Required assessment measurement documentation .23
Annex A (normative) Printing process .25
Annex B (normative) Scanner conformance .30
Annex C (normative) Reference measurement methods and conformance .36
© ISO/IEC 2018 – All rights reserved iii

Annex D (informative) Reporting .53
Annex E (informative) Usage .59
Annex F (informative) Electro-photographic system measurement method verification example 65
Bibliography .87
iv © ISO/IEC 2018 – All rights reserved

Foreword
ISO (the International Organization for Standardization) and IEC (the International Electrotechnical
Commission) form the specialized system for worldwide standardization. National bodies that are
members of ISO or IEC participate in the development of International Standards through technical
committees established by the respective organization to deal with particular fields of technical
activity. ISO and IEC technical committees collaborate in fields of mutual interest. Other international
organizations, governmental and non-governmental, in liaison with ISO and IEC, also take part in the
work. In the field of information technology, ISO and IEC have established a joint technical committee,
ISO/IEC JTC1.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for
the different types of document should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject
of patent rights. ISO and IEC shall not be held responsible for identifying any or all such patent
rights. Details of any patent rights identified during the development of the document will be in the
Introduction and/or on the ISO list of patent declarations received (see www .iso .org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following
URL: www .iso .org/iso/forward .html.
This document was prepared by Technical Committee ISO/IEC JTC1, Information technology,
Subcommittee SC 28, Office equipment.
This first edition cancels and replaces ISO/IEC TS 29112:2012.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/members .html.
© ISO/IEC 2018 – All rights reserved v

Introduction
The purpose of this document is to provide a process for the objective measurement of print quality
characteristics that contribute to perceived resolution in pages printed on paper or similar opaque
materials using monochrome electro-photographic printing processes.
This document prescribes the following:
— Definitions of print quality characteristics that contribute to perceived resolution.
— Definitions of conformance methods to qualify a reflection scanner for use as a measuring device.
— A testing procedure based upon:
a) a well-documented printer and printing environment setup,
b) well-controlled printing of specified test pages, and
c) subsequent measurement of print quality characteristics using reflection scans of test pattern
elements on the printed test pages.
— Definitions of methods for measuring the contributing print quality characteristics using printed
test pattern elements of the specified test pages and analysing the resulting data to derive an
assessment of printer resolution.
— Requirements for the report of a printer resolution assessment that define the context of the
assessment and describe the results of the assessment.
Printer resolution, a quantification of the ability of a digital printing system to depict fine spatial
detail, is a perceptually complex entity with no single, simple, objective measure. Five print quality
characteristics that meanin
...

INTERNATIONAL ISO/IEC
STANDARD 29112
First edition
2018-11
Information technology — Office
equipment — Test pages and methods
for measuring monochrome printer
resolution
Technologies de l'information — Équipement de bureau —
Diagrammes et méthodes pour mesurer la résolution des imprimantes
monochromes
Reference number
©
ISO/IEC 2018
© ISO/IEC 2018
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Fax: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii © ISO/IEC 2018 – All rights reserved

Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms, definitions and abbreviations . 1
3.1 Terms and definitions . 1
3.2 Abbreviations . 6
4 Print resolution characteristics — Methods for measurement and analysis .6
4.1 Conformance requirements . 6
4.1.1 General. 6
4.1.2 Test page conformance . 6
4.1.3 Printing process conformance . 7
4.1.4 Scanner characteristics conformance . 7
4.1.5 Measurement method conformance . 7
4.2 Native addressability . 8
4.2.1 General. 8
4.2.2 Method for measuring native addressability . 8
4.3 Effective addressability .10
4.3.1 General.10
4.3.2 Method for measuring effective addressability .10
4.4 Edge blurriness and edge raggedness .12
4.4.1 General.12
4.4.2 Edge blurriness .12
4.4.3 Edge raggedness . .13
4.4.4 Method for measuring edge blurriness and edge raggedness .14
4.5 Spatial frequency response .15
4.5.1 General.15
4.5.2 Printer SFR estimation from edge characteristics .15
4.5.3 Method for measuring printer SFR from edge characteristics .15
4.5.4 Printer SFR estimation from 1-D repeating patterns .16
4.5.5 Method for measuring printer SFR from 1-D repeating pattern characteristics .16
4.6 ROI size and shape variation .18
5 Test set-up, configurations and procedure .18
5.1 Printer set-up and configuration .18
5.2 Printer testing environment .19
5.3 Substrate .19
5.4 Test platform connection to the printer .19
5.5 Printing process .19
5.6 Test pages .19
5.7 Sample size .20
5.8 Set-up procedure .20
5.9 Testing procedure for visual evaluation .20
5.10 Testing procedure for scanner-based measurement .21
6 Presentation of results .21
6.1 General .21
6.2 Required assessment configuration documentation .22
6.3 Required assessment measurement documentation .23
Annex A (normative) Printing process .25
Annex B (normative) Scanner conformance .30
Annex C (normative) Reference measurement methods and conformance .36
© ISO/IEC 2018 – All rights reserved iii

Annex D (informative) Reporting .53
Annex E (informative) Usage .59
Annex F (informative) Electro-photographic system measurement method verification example 65
Bibliography .87
iv © ISO/IEC 2018 – All rights reserved

Foreword
ISO (the International Organization for Standardization) and IEC (the International Electrotechnical
Commission) form the specialized system for worldwide standardization. National bodies that are
members of ISO or IEC participate in the development of International Standards through technical
committees established by the respective organization to deal with particular fields of technical
activity. ISO and IEC technical committees collaborate in fields of mutual interest. Other international
organizations, governmental and non-governmental, in liaison with ISO and IEC, also take part in the
work. In the field of information technology, ISO and IEC have established a joint technical committee,
ISO/IEC JTC1.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for
the different types of document should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject
of patent rights. ISO and IEC shall not be held responsible for identifying any or all such patent
rights. Details of any patent rights identified during the development of the document will be in the
Introduction and/or on the ISO list of patent declarations received (see www .iso .org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following
URL: www .iso .org/iso/forward .html.
This document was prepared by Technical Committee ISO/IEC JTC1, Information technology,
Subcommittee SC 28, Office equipment.
This first edition cancels and replaces ISO/IEC TS 29112:2012.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/members .html.
© ISO/IEC 2018 – All rights reserved v

Introduction
The purpose of this document is to provide a process for the objective measurement of print quality
characteristics that contribute to perceived resolution in pages printed on paper or similar opaque
materials using monochrome electro-photographic printing processes.
This document prescribes the following:
— Definitions of print quality characteristics that contribute to perceived resolution.
— Definitions of conformance methods to qualify a reflection scanner for use as a measuring device.
— A testing procedure based upon:
a) a well-documented printer and printing environment setup,
b) well-controlled printing of specified test pages, and
c) subsequent measurement of print quality characteristics using reflection scans of test pattern
elements on the printed test pages.
— Definitions of methods for measuring the contributing print quality characteristics using printed
test pattern elements of the specified test pages and analysing the resulting data to derive an
assessment of printer resolution.
— Requirements for the report of a printer resolution assessment that define the context of the
assessment and describe the results of the assessment.
Printer resolution, a quantification of the ability of a digital printing system to depict fine spatial
detail, is a perceptually complex entity with no single, simple, objective measure. Five print quality
characteristics that meanin
...