DIN CEN TS 14826-2004 Postal services - Automatic identification of items - Two dimensional bar code symbol print quality specification for machine readable Digital Postage Marks E.pdf

1、Oktober 2004 Normenausschuss B rowesen (NB ) im DINPreisgruppe 14DIN Deutsches Institut f r Normung e.V. Jede Art der Vervielf ltigung, auch auszugsweise, nur mit Genehmigung des DIN Deutsches Institut f r Normung e. V., Berlin, gestattet.ICS 03.240: 9528726www.din.deXVornormDIN CEN/TS 14826Postalis

2、che Dienstleistungen Automatische Identifizierung von Sendungen Druckqualit t von zweidimensionalen Strichcodes f r Digitale Freimachungsvermerke;Englische Fassung CEN/TS 14826:2004Postal services Automatic identification of items Two dimensional bar code symbol print quality specification for machi

3、ne readable Digital Postage Marks;English version CEN/TS 14826:2004Services postaux Identification automatique des objets postaux Mesure de la qualit d impression;Version anglaise CEN/TS 14826:2004Alleinverkauf der Normen durch Beuth Verlag GmbH, 10772 Berlin www.beuth.deGesamtumfang 32 SeitenB55EB1

4、B3E14C22109E918E8EA43EDB30F09CC9B7EF8DD9NormCD - Stand 2007-03 DIN CEN/TS 14826:2004-102Eine Vornorm ist das Ergebnis einer Normungsarbeit, das wegen bestimmter Vorbehalte zum Inhalt oderwegen des gegenber einer Norm abweichenden Aufstellungsverfahrens vom DIN noch nicht als Normherausgegeben wird.Z

5、ur vorliegenden Vornorm wurde kein Entwurf verffentlicht.Erfahrungen mit dieser Vornorm sind erbeten an den Normenausschuss Browesen (NB) im DIN DeutschesInstitut fr Normung e. V. 10772 Berlin (Hausanschrift: Burggrafenstrae 6, 10787 Berlin).Nationales VorwortDiese Technische Spezifikation wurde vom

6、 CEN/TC 331 Postalische Dienstleistungen unter Beteiligungdeutscher Experten erarbeitet.Der fr die deutsche Mitarbeit zustndige Arbeitsausschuss im DIN Deutsches Institut fr Normung e. V. istder NB-1.6 Postalische Dienstleistungen.Da von den interessierten Kreisen kein Bedarf an einer deutschen Spra

7、chfassung erkannt wurde, wird dieseeuropische Technische Spezifikation vom DIN in der Englischen Fassung verffentlicht.Fr die im Abschnitt 2 zitierte Europische Norm wird im Folgenden auf die entsprechende Deutsche Normhingewiesen:EN 1556 siehe DIN EN 1556Nationaler Anhang NA(informativ)Literaturhin

8、weiseDIN EN 1556, Strichcodierung Terminologie; Deutsche Fassung EN 1556:1998.Vornorm B55EB1B3E14C22109E918E8EA43EDB30F09CC9B7EF8DD9NormCD - Stand 2007-03 TECHNICAL SPECIFICATIONSPCIFICATION TECHNIQUETECHNISCHE SPEZIFIKATIONCEN/TS 14826August 2004ICS 03.240; 35.040English versionPostal servicesAutom

9、atic identification of itemsTwo dimensional bar code symbol print quality specification formachine readable Digital Postage MarksServices postaux Identification automatique des objets postaux Mesure de la qualit dimpressionPostalische Dienstleistungen -Automatische Identifizierung von Sendungen Druc

10、kqualitt von zwei-dimensionalen Strichcodes frDigitale FreimachungsvermerkeThis Technical Specification (CEN/TS) was approved by CEN on 23 March 2004 for provisional application.The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requ

11、ested to submit theircomments, particularly on the question whether the CEN/TS can be converted into a European Standard.CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS availablepromptly at national level in an appropriate form. I

12、t is permissible to keep conflicting national standards in force (in parallel to the CEN/TS)until the final decision about the possible conversion of the CEN/TS into an EN is reached.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland,

13、 France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGM

14、anagement Centre: rue de Stassart, 36 B-1050 Brussels 2004 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. CEN/TS 14826:2004: EVornorm B55EB1B3E14C22109E918E8EA43EDB30F09CC9B7EF8DD9NormCD - Stand 2007-03 CEN/TS 14826:2004 (E)2ContentsPa

15、geForeword. 4Introduction 51 Scope 72 Normative references . 73 Terms and definitions. 74 Symbols and abbreviations . 85 Requirements 96 Basic measurement methodology. 107 Verification requirements for Digital Postage Marks 117.1 Verification equipment . 117.2 Optical geometry. 117.3 Light source. 1

16、17.4 Measuring aperture. 127.4.1 Measuring aperture for two-dimensional multi-row symbologies. 127.4.2 Measuring aperture for two-dimensional matrix symbologies 137.5 Mail format . 138 Grading implications for individual symbol attributes 139 Additional grading parameters - Quiet zone 1510 Qualifica

17、tion of printing systems for Digital Postage Marks 15Annex A (normative) Test procedure for printing systems for Digital Postage Marks. 16A.1 Environmental conditions for test. 16A.2 Test materials 16A.3 Test procedure 17Annex B (informative) Light sources and spectral response characteristics for v

18、erification of DigitalPostage Marks. 18B.1 Narrow-band illumination. 18B.2 Broad-band illumination (white light) . 18B.2.1 General . 18B.2.2 Halogen lamps. 19B.2.3 Light emitting diode 19B.2.4 Gas discharge lamp 19B.2.5 Fluorescent lamps. 20Annex C (informative) Symbol parameters measured in accorda

19、nce with ISO/IEC 15415. 21C.1 Parameters for two-dimensional multi-row symbols 21C.2 Parameters for two-dimensional matrix symbologies 22Annex D (informative) Characteristics of Digital Postage Mark printing and reading environments thataffect print quality . 23D.1 Printing of Digital Postage Marks

20、23D.1.1 Ink-jet printing . 23D.1.2 Laser printing 23D.1.3 Thermal transfer printing . 24D.1.4 Direct thermal printing 24D.1.5 Matching X dimension to printer resolution. 24D.2 Reading environment . 25Vornorm B55EB1B3E14C22109E918E8EA43EDB30F09CC9B7EF8DD9NormCD - Stand 2007-03 CEN/TS 14826:2004 (E)3P

21、ageAnnex E (informative) Possible causes of low parameter grades in the Digital Postage Markenvironment26E.1 Multi-row symbologies 26E.1.1 Symbol Contrast 26E.1.2 Minimum reflectance .26E.1.3 Minimum edge contrast.26E.1.4 Modulation26E.1.5 Decode 27E.1.6 Defects 27E.1.7 Decodability27E.1.8 Codeword

22、yield 27E.1.9 Unused error correction (UEC).27E.1.10 Quiet zone.27E.1.11 Print growth28E.1.12 Codeword quality.28E.2 Matrix symbologies28E.2.1 Symbol Contrast 28E.2.2 Fixed pattern damage28E.2.3 Modulation28E.2.4 Axial non-uniformity 29E.2.5 Grid non-uniformity .29E.2.6 Unused error correction29E.2.

23、7 Quiet zone.29E.2.8 Print growth29Bibliography 30Vornorm B55EB1B3E14C22109E918E8EA43EDB30F09CC9B7EF8DD9NormCD - Stand 2007-03 CEN/TS 14826:2004 (E)4ForewordThis document (CEN/TS 14826:2004) has been prepared by Technical Committee CEN/TC 331 “Postal Services“,the secretariat of which is held by NEN

24、.This document includes a Bibliography.Organisations contributing to the development of the document include: Universal Postal Union ISO/IEC JTC1/SC28 “Office equipment“ ISO/IEC JTC1/SC31 “Automatic identification and data capture techniques“It is intended that this document should be adopted by ISO

25、/IEC JTC1/SC28, in the work programme of which theproject has been assigned project number ISO/IEC NP 18050.For compatibility between CEN and UPU versions of this document, the term document is used. In a CEN context,this should be interpreted as being equivalent to the deliverable mentioned on the

26、title page of this document. In aUPU context, this should be interpreted as being equivalent to standard.According to the CEN/CENELEC Internal Regulations, the national standards organizations of the followingcountries are bound to announce this Technical Specification : Austria, Belgium, Cyprus, Cz

27、ech Republic,Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland andUnited Kingdom.Vornorm B55EB1B3E14C22109E918E8EA43EDB30F09CC9B7EF8DD9NormCD

28、 - Stand 2007-03 CEN/TS 14826:2004 (E)5IntroductionDigital Postage Marks (or franking marks), sometimes abbreviated to DPM, are used to evidence the payment ofpostage and/or other fees related to services requested by mailers. Digital Postage Marks are represented bysymbols imprinted on the envelope

29、, the label or the insert. Digital Postage Marks produced by different vendorssystems are generated with a variety of symbols and graphical images. The symbologies used for these imagesare primarily two-dimensional bar codes of both multi-row (PDF417) and matrix types (e.g. Data Matrix), asspecified

30、 in UPU standard S28. However, postal operators can also use other symbologies, e.g. OCR or 4-statecodes for these purposes. The two-dimensional bar code symbologies offer advantages for the machine-readablerepresentation of data strings of the order of 80 or more bytes in length, due to their high

31、information densitycharacteristics.Public postal operators and private carriers in Europe have a high interest in automatically reading and validatingthese marks, preferably at high speed. It is essential that these symbols are read reliably by postal processingequipment. The highest practicable rea

32、d rate is desired by users of such equipment in order to ensure efficientautomation of this process, and any shortfall in the read rate can have as its consequence a loss of revenue to theoperator.This document has been designed to customise the generic method of measuring the print quality of two-d

33、imensional bar code symbols to the needs of the postal application and to recommend appropriate print qualitylevels that should contribute to the achievement of the read rates desired by the authorities responsible forvalidation of the Digital Postage Marks and by postal operators; it is also intend

34、ed to provide guidelines for printingmachine readable Digital Postage Marks on mail items. The Technical Specification will provide mailers, postaloperators and their suppliers with a practical, quantitative, and objective way to measure and communicate to eachother basic print quality parameters of

35、 machine readable Digital Postage Marks. Since all attributes do notcontribute uniformly to the readability of a Digital Postage Mark, the Technical Specification identifies five levels ofcriticality for an attribute (graded 0 to 4, in ascending order of quality), and a grading scheme that assesses

36、theoverall symbol quality based on averaging the results of multiple scans.The Technical Specification can be used in the following ways: it allows an estimate to be made of the readability of a Digital Postage Mark without actually submitting it to anypostal validation and the qualification of said

37、 symbol as acceptable or not acceptable for readability purposes. it allows an estimate to be made of the quality levels potentially achievable by a printing system with particularsubstrates it provides a tool for process control in the operation of Digital Postage Mark printing systems.The Technica

38、l Specification applies the measurement methodology defined in ISO/IEC 15415 for print qualityattributes that tend to influence the readability of two-dimensional bar codes. This methodology is derived from aview of the current state-of-the-art in two-dimensional bar code scanning technologies.Yet,

39、such a state-of-the-art is not a perfectly defined concept. First, it is likely to evolve with time towards improvedrecognition capabilities. Second, an automatic identification and data capture system is always the result of acompromise between recognition power and cost. This is why the Technical

40、Specification is expressed in the formof guidelines rather than prescriptions. However, it is not technically possible to define guidelines concerning solelythe printing of Digital Postage Marks without taking into account the manufacturing of the mail item as a whole.The readability of the Digital

41、Postage Mark is a function not only of the inherent quality of printing, i.e. theinteraction of the ink, substrate and printing mechanism together with the effects of the shape of the mail-piece andits transport through the printing system on the production of the mark, but also of the effects of en

42、vironmental andhandling factors in transit between the production point and the point at which it is to be read. For example, thesymbol contrast of Digital Postage Marks is not only that provided by the printer/paper combination under definedillumination conditions. It also results from a variety of

43、 other factors among which the covering of the mail item orthe material of the transparent window through which the Digital Postage Mark can be seen. As a consequence,the guidelines described in this document apply to the Digital Postage Mark blocks of fully assembled mail items. Itis the responsibi

44、lity of the users of the Technical Specification to achieve compliance with the guidelines bycontrolling the effects of the physical elements resulting in the relevant attributes.Vornorm B55EB1B3E14C22109E918E8EA43EDB30F09CC9B7EF8DD9NormCD - Stand 2007-03 CEN/TS 14826:2004 (E)6The guidelines are pri

45、marily a tool for predicting the level of Digital Postage Mark readability with respect to currentscanning technologies, and compliance with them should result in a high level of Digital Postage Mark readability.The guidelines are aimed at facilitating the relations between postal operators and cust

46、omers, vendors of mailgeneration and printing equipment and suppliers of mail reading and sorting equipment. In particular, equipmentvendors need firm and precise guidance in designing print systems and formats for machine readability. Therefore,a quantitative specification of print quality is critical to the development