SYSMEX XP Series - Page 246

14-16 Sysmex XP-300
Technical Information
January 2012
PCS (Print Contrast Signal) value
The analysis method conforms to JIS (Japanese Industrial Standards) X0501, Section 5.3:
Optical Characteristics of Bar code Symbols.
Surface reflection
A laminated label cannot be read.
Irregularity and roughness of printing
Enlarging a single bar from a bar code with a microscope shows something like the figure
below.
When the variation coefficient (S) in the width of a bar is defined:
Then the variation coefficient (S) must be 20% or less.
Bar code label dimensions
Space: Min. 2.5 mm or 10 × largest module value
Effective bar code width: Max. 48 mm (Optimum: 40 mm or less)
Bar height: Min. 20 mm
PCS =
Reflectivity of the space - Reflectivity of the black inked bar
Reflectivity of the space
Standard: PCS value ≥ 0.45
S =
MAX - MIN
× 100%
MAX
MAX
MIN
Bar element
Space Effective bar code width Space
Bar height