INCITS/ISO 1831 : 1980 : R2004
Current
The latest, up-to-date edition.
Hardcopy , PDF
English
01-01-2004
0 Introduction
0.1 Interpretation of the International Standard
0.2 Use of the International Standard
0.3 Annexes
1 Scope and field of application
2 References
3 Spectral requirements
3.1 General
3.2 Spectral bands
4 Paper specifications for OCR
4.1 General
4.2 Luminous reflectance factor R[u] of paper
4.3 Dirt in paper
4.4 Paper opacity
4.5 Variation in reflectance of paper
5 Characteristics of the printed image
5.1 General
5.2 Print quality tolerance ranges
5.3 Definition of character outline limits
5.4 Measurements of parameters
6 Character positioning
6.1 General
6.2 Document reference edges
6.3 Character boundary
6.4 Character skew
6.5 Line boundary
6.6 Field
6.7 Horizontal positioning of characters within a line
6.8 Character alignment within a line
6.9 Printing area
6.10 Clear area
6.11 Margin
6.12 Line separation
6.13 Line spacing
Annexes
A Paper characteristics and measurements
B Characteristics of the printed image
C Computer-aided method (CAM) of print quality measurement
D Character positioning
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