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INCITS/ISO/IEC 18050 : 2008(R 2018)
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INFORMATION TECHNOLOGY - OFFICE EQUIPMENT - PRINT QUALITY ATTRIBUTES FOR MACHINE READABLE DIGITAL POSTAGE MARKS
Hardcopy , PDF
03-04-2024
English
01-01-2008
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviations
5 Requirements
6 Basic measurement methodology
7 Verification requirements for Digital Postage Marks
7.1 Verification equipment
7.2 Optical geometry
7.3 Light source
7.4 Measuring aperture
7.4.1 Measuring aperture for two-dimensional
multi-row symbologies
7.4.2 Measuring aperture for two-dimensional
matrix symbologies
7.5 Mail format
8 Grading implications for individual symbol attributes
9 Additional grading parameters - quiet zone
10 Qualification of printing systems for Digital Postage
Marks
Annex A (normative) Test procedure for printing systems
for Digital Postage Marks
A.1 Environmental conditions for test
A.2 Test materials
A.3 Test procedure
Annex B (informative) Light sources and spectral response
characteristics for verification of
Digital Postage Marks
B.1 Narrow-band illumination
B.2 Broad-band illumination (white light)
B.2.1 Halogen lamps
B.2.2 Light emitting diode
B.2.3 Gas discharge lamp
B.2.4 Fluorescent lamps
Annex C (informative) Symbol parameters measured in
accordance with ISO/IEC 15415
C.1 Parameters for two-dimensional multi-row symbols
C.2 Parameters for two-dimensional matrix symbologies
Annex D (informative) Characteristics of Digital Postage
Mark printing and reading environments
that affect print quality
D.1 Printing of Digital Postage Marks
D.1.1 Ink-jet printing
D.1.2 Laser printing
D.1.3 Thermal transfer printing
D.1.4 Direct thermal printing
D.1.5 Matching X dimension to printer resolution
D.2 Reading environment
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.1.2 Minimum reflectance
E.1.3 Minimum edge contrast
E.1.4 Modulation
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
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
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
Bibliography
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