This Standard specifies the methodology for the measurement of print quality of bar code symbols.
This Standard applies to the measurement of print quality of bar code symbols. For the specific application fields have special national standards on bar code symbol inspection, the bar code symbols shall be inspected in accordance with such inspection standards.
2 Normative References
The following normative documents contain provisions which, through reference in this text, constitute provisions of this Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this Standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies.
GB/T 12905 Bar coding terminology
ISO 7724-2:1984 Paints and varnishes — Colorimetry — Part 2: Colour measurement.
3 Terms and Definitions
For the purposes of this Standard, the terms and definitions given in GB/T 12905 and the following apply.
3.1
Bar
A dark element corresponding to a region of a scan reflectance profile (3.16) below the global threshold.
3.2
Bar reflectance
The lowest reflectance value (3.16) of an individual bar element (3.1) in the scan reflectance profile of that element.
GB/T 14258-2003 The following standards are cited：
