GLOSSARY
Article Numbering Association - (A.N.A, the co-ordinating body in the UK for article numbering using the EAN, ITF-14 and EAN-128 standards, now renamed GS1.
AIM Automatic Identification Manufacturers Association - This organisation has branches in most countries or regions. It is supported by manufacturers and suppliers of automatic ID equipment and services.
Alphanumeric A character set including numbers and letters - ASCII the American Standard Code for information interchange. Bar Width Reduction - the thinning of bars within a bar code which compensates for print gain.
Bearer Bars - the protective printed lines or box around a bar code which help to support the printing plate and reduce the squashing effect on the bar code image.
Code 128 - a full alphanumeric bar code type which can encode the entire ASCII character set.
Code 39 - an alphanumeric bar code type which can encode capital letters, numbers and 7 special characters.
Codabar - a bar code type which may encode 0-9 and six special characters, four different start and stop patterns are used to signify different users.
CPI - characters per inch.
EAN - European Article Number The international standard for coding retail goods.
Guard Bars - the bar space patterns at the start, centre and end of EAN and UPC codes, used as a reference point for the scanning device.
GS1 - the co-ordinating body in the UK for article numbering using the EAN, ITF-14 and EAN-128 standards.
Interleaved 2 of 5 - a numeric only bar code symbology, characters are encoded in pairs with the bars representing the first character and the spaces representing the second.
ISBN International Standard Book Number - represented by the ISBN/EAN bar code on books.
ISSN International Standard Serial Number represented on magazines and periodical publications by the ISSN/EAN bar code.
Magnification - the method of describing bar code width and height in some symbologies, 100 % magnification is also called normal size.
Micron - one thousandth of a millimetre.
Narrow Bar - the width of a single module or narrowest bar in some symbologies.
Nominal Size - the standard size for a bar code of a given symbology.
Numeric Representation - using only the digits 1,2,3,4,5,6,7,8,9 and 0.
OCR-A and OCR-B - character sets or fonts both of which may be machine or human read, used for human readable information in bar coding.
Parity - a way of encoding bar/space patterns using an odd or even number of module bars or spaces, the parity may be calculated by the scanner to provide an error check.
Post Script - the high quality image description language developed by adobe systems inc. which uses vectors to describe graphical elements.
Printer Compensation - a method of adjusting bar width to compensate for a bias on a print device.
Quiet Zone - the light space at either side of a bar code which is needed by the scanner to detect the start and end of a code.
Raster A - a series of dots or cells arranged in a regular grid.
Reflectance - the ability of a surface or printed area to reflect light.
Start Character - the specific bar/space pattern which indicates the start of a bar code.
Stop Character - the specific bar/space pattern which indicates the end of a bar code.
Truncation - the reduction in bar height below normal height or that normally specified.
Transposition - the switching of the order of a pair of digits, the most common error in keyed data entry.
Uniform Code Council (U.C.C) the US organisation which administers the UPC and other retail specifications.
Universal Product Code (U.P.C) - the standard bar code type for retail products in the US.
Verifier - a device used to measure the bars and spaces of a bar code and report on their accuracy in relation to the specified tolerances.
Wide / Narrow Ratio - the ratio between the narrow bar and the wide bar widths in certain bar code symbologies.
X Dimension - the nominal width of a narrow bar.
Zero Suppression - the method of shortening a bar code number by eliminating 0's.
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