5525B/31/32 Line Matrix Printer Code V Programmer's Reference Manual

Identicon
171
Identicon
The Identicon bar code structure is shown in Figure 14 and described on the
following pages.
Figure 14. Identicon Structure
Quiet Zone
Quiet zones extend on both ends of the bar code to permit the scan to begin
and end in a blank area. The quiet zone should be at least 0.25 inch wide and
completely blank.
Start/Stop Codes
The Start/Stop codes identify the leading and trailing end of the bar code. The
Start/Stop code is automatically produced with each bar code.
Data Field
The bar code symbol uses a series of wide and narrow bars to represent the
10 numeric characters (0 - 9) and Start/Stop codes. All the information is
contained in the width of the bars, the spaces serving only to separate the
individual bars. The wide bars are conventionally three times the widths of the
narrow bars. The spaces may be any reasonable width but are typically equal
to the narrow bars. The bar code can encode up to 40 numbers. Each data
character is represented by 5 bars separated by spaces. There must be two
wide bars among the 5 bars. Refer to Table 29 for symbol coding.
Readable Data
Readable data is printed below the horizontal bar code and to the left of the
vertical bar codes. The lower guard band is provided when the readable data
field is selected.
DATA FIELD
QUIETQUIET
START
STOP
LOWER GUARD BAND
CODE
CODEZONE
ZONE
OPTIONAL READABLE DATA FIELD
HEIGHT
STARTING
DATA
FIELD
QUIET
ZONE
STOP
CODE
START
CODE
OPTIONAL
READABLE
DATA
FIELD
HEIGHT
STARTING
GUARD
BAND
LOWER
POSITION
POSITION
QUIET
ZONE