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BSI PD CEN/TS 14826:2022 – TC

$217.84

Tracked Changes. Postal services. Automatic identification of items. Two dimensional bar code symbol print quality specification for machine readable Digital Postage Marks

Published By Publication Date Number of Pages
BSI 2022 74
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This document: – specifies a methodology for the measurement of defined print quality attributes of Digital Postage Marks in the form of two-dimensional bar code symbols on mail-pieces; – defines methods for grading the results of these measurements and deriving an overall symbol quality grade as a guide to estimating the readability of the Digital Postage Marks; – provides guidelines for printing and gives information on possible causes of deviation from high grades to assist users in taking appropriate corrective action; – defines a test procedure for the assessment of printing systems for the production of Digital Postage Marks. These provisions apply to the Digital Postage Mark blocks as they appear on fully produced mail items when remitted to postal operators, including the characteristics resulting from operations other than printing per se that affect their appearance to a mail processing system (covering, inserts into transparent window envelopes, affixed Digital Postage Mark labels). This document does not define the qualification tests or sampling requirements necessary to determine the practical feasibility of any specific read rate. Although this document is not intended for barcodes (other than Digital Postal Marks) which can be printed on mail pieces for item identification or additional services, a similar methodology can be applied.

PDF Catalog

PDF Pages PDF Title
1 30461820
41 A-30435423
42 undefined
48 1 Scope
2 Normative references
49 3 Terms and definitions
50 4 Symbols and abbreviations
5 Requirements
52 6 Basic measurement methodology
7 Verification requirements for Digital Postage Marks
7.1 Verification equipment
53 7.2 Optical geometry
7.3 Light source
54 7.4 Measuring aperture
7.4.1 General
7.4.2 Measuring aperture for two-dimensional multi-row symbologies
7.4.3 Measuring aperture for two-dimensional matrix symbologies
55 7.5 Mail format
8 Grading implications for individual symbol attributes
57 9 Additional grading parameters – Quiet zone
10 Qualification of printing systems for Digital Postage Marks
58 Annex A (normative)Test procedure for printing systems for Digital Postage Marks
A.1 Environmental conditions for test
A.2 Test materials
59 A.3 Test procedure
60 Annex B (informative)Light sources and spectral response characteristics for verification of Digital Postage Marks
B.1 General
B.2 Narrow-band illumination
61 B.3 Broad-band illumination (white light)
B.3.1 General
B.3.2 Halogen lamps
62 B.3.3 Light emitting diode
B.3.4 Gas discharge lamp
B.3.5 Fluorescent lamps
63 Annex C (informative)Symbol parameters measured in accordance with ISO/IEC 15415
C.1 General
C.2 Parameters for two-dimensional multi-row symbols
64 C.3 Parameters for two-dimensional matrix symbologies
65 Annex D (informative)Characteristics of Digital Postage Mark printing and reading environments that affect print quality
D.1 Introduction
D.2 Printing of Digital Postage Marks
D.2.1 General
D.2.2 Ink-jet printing
66 D.2.3 Laser printing
D.2.4 Thermal transfer printing
D.2.5 Direct thermal printing
D.2.6 Matching X dimension to printer resolution
67 D.3 Reading environment
68 Annex E (informative)Possible causes of low parameter grades in the Digital Postage Mark environment
E.1 Multi-row symbologies
E.1.1 Symbol Contrast
E.1.1.1 General
E.1.1.2 Low background/space reflectance
E.1.1.3 High bar reflectance
E.1.2 Minimum reflectance
E.1.3 Minimum edge contrast
E.1.4 Modulation
69 E.1.5 Decode
E.1.6 Defects
E.1.7 Decodability
E.1.8 Codeword yield
E.1.9 Unused error correction (UEC)
E.1.10 Quiet zone
70 E.1.11 Print growth
E.1.12 Codeword quality
E.2 Matrix symbologies
E.2.1 Symbol Contrast
E.2.2 Fixed pattern damage
E.2.3 Modulation
71 E.2.4 Axial non-uniformity
E.2.5 Grid non-uniformity
E.2.6 Unused error correction
E.2.7 Quiet zone
E.2.8 Print growth
BSI PD CEN/TS 14826:2022 - TC
$217.84