AS 1436-1983

1 - AS 1436-1983 ALPHANUMERIC CHARACTER SET OCR-B FOR OPTICAL RECOGNITION
4 - PREFACE
6 - 1 GENERAL
6 - 1.1 Scope
6 - 1.2 Field of application
6 - 1.3 Definitions
6 - 2 STYLES
6 - 3 OCR-B SIZES
7 - 4 TYPICAL DIMENSIONS OF THE NOMINAL PRINTED IMAGE
7 - 4.1 Constant-strokewidth font
7 - 4.2 Letterpress font
8 - 5 OCR-B CHARACTER SET
8 - 5.1 Sub-set 1: Numeric sub-set
8 - 5.2 Sub-set 2 : Initial alphanumeric sub-set
9 - 5.3 Sub-set 3 : Extended alphanumeric sub-set
9 - 5.4 Sub-set 4 : Options sub-set
10 - 5.5 Sub-set 5 : Erase characters
11 - 6 INDEX TABLE
23 - 7 USE OF DIACRITICAL SIGNS
23 - 8 USE OF THE TWO UNDERLINE CHARACTERS
23 - 9 SPACE
23 - 10 VERTICAL LINE AND LONG VERTICAL MARK
24 - 11 CHARACTER SHAPE DEFINITION
24 - 11.1 Reference drawings
24 - 11.2 Availability of duplicates
24 - 11.3 Type dimensions
24 - 11.4 Constant-strokewidth font, size I
24 - 11.5 Constant-strokewidth font, size III
25 - 11.6 Constant-strokewidth font, size IV
25 - 11.7 Letterpress font, size I
25 - 12 PRINTING THE LETTERPRESS AND CONSTANT-STROKEWIDTH FONTS
25 - 13 ILLUSTRATION OF OCR-B
37 - ANNEX A - OLD DESIGN OF DIGIT ZERO
37 - Letterpress font
37 - Constant-strokewidth font
40 - ANNEX B - EXISTING APPLICATIONS USING FORMER SIZE II WITH FORMER FONT DESIGN OF THE TEN DIGITS
40 - Use of co-ordinate tables and reference point drawings
46 - ANNEX C - RECOMMENDATION FOR THE IMPLEMENTATION OF OCR-B ON TYPEWRITERS

Specifies the printed image shapes and sizes of the alphanumeric character set OCR-B for use in optical recognition systems. Technically identical with ISO 1073-2:1976.

This International Standard for character shapes and sizes is intended to facilitate and foster the use of Optical Character Recognition (OCR) in data processing, by defining character shapes suitable for both human and machine reading.It establishes a common basis for printing equipment and optical scanning equipment for OCR interchange applications.Additional International Standards will cover the print quality and the relevant characteristics of the formats needed to satisfy interchange requirements.Field of applicationThis International Standard specifies the printed image shapes and sizes of alphanumeric characters, graphics and symbols designed for use in Optical Character Recognition. They are also suitable for general purposes.In order to satisfy present requirements and encourage the wide extension of OCR applications, two sets of characters are specified. These are named OCR-A and OCR-B.Character set OCR-A includes the numeric sub-set which was recommended in draft ISO Recommendation No. 890 (now part of this International Standard). The shapes of the characters have been designed to be suitable for use in many applications of OCR. Dimensions of OCR-A are given in three sizes. (See part I.)The shapes of the OCR-B characters have been designed for use in OCR systems without undue sacrifice of their suitability for general purposes in a wide range of applications. Dimensions of OCR-B are given in three sizes.