11 EVOLUTION 1 SYSTEM MANUAL Issue Issue 1.1 20 Dec 2006
UPC-E: The UPC-E code is a compressed barcode (4 widths)
Numbers only (must include 0’s)
Compression works by squeezing extra zeroes out of the barcode and
then automatically re-inserting them at the scanner. Only barcodes
containing zeroes are candidates for the UPC-E symbol.
DATAMATRIX: Is a 2-D full 256-character ASCII code
The code is made up of square modules (elements) arranged within a
perimeter-clocking pattern.
The symbol consists of data regions, which contain square modules set
out in a regular array.
Most of the symbols are square ranging from 10x10 to144x144 elements.
The correct array is automatic, dependent on the data entered.
The following are ideal data matrix codes.
The pictorial below is a 10x10 array encoding the numbers 1, 2, 3, 4 and 5
scaled for reference purposes.
Data matrix codes are more tolerable to stretch and skew by the nature of their
imbedded clocking patterns defining both columns and rows.
Below is an 18x18 array encoding DIGITAL DESIGN INC. The pattern is
repeated 7 times with various resolutions ranging from a 7x7 element to a 1x1
element. Even though it is conceivable to produce a 1x1 element, the nature of
ink bleed makes it unrealistic. The EVOLUTION II with the optional DATAMATRIX
symbologies installed limits the element size to a 2x2 array.
CLOCKING PATTERNS
CLOCKING PATTERNS
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