Printronix l7032 参照マニュアル

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Interleaved 2/5
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Interleaved 2/5
The Interleaved 2/5 bar code structure is shown in Figure 14 and described 
on following pages.
Figure 14. Interleaved 2/5 Structure
Quiet Zone
Both ends of the bar code structure have blank quiet zones. The quiet zones 
should be at least 0.25 inches wide and completely blank to ensure accurate 
reading of the start/stop codes and to prevent adjacent bar codes from 
overlapping. You are responsible for providing sufficient space on the form for 
the quiet zones.
Start/Stop Codes
Unique start and stop codes permit bidirectional scanning. Both start and stop 
codes contain bars and spaces. They are automatically produced.
Data Field
The bar code symbol uses a series of wide and narrow bars and spaces to 
represent numeric characters. The structure is 2 wide elements (bars or 
spaces) and 3 narrow elements. In the bar code, two characters are 
interleaved (paired); bars are used to represent data characters occupying 
the odd-numbered positions, and spaces are used to represent data 
characters occupying the even-numbered positions. The interleaving process 
requires an even number of characters; if an odd number of characters are 
encoded, a leading zero is automatically inserted to change the number of 
characters to an even number.
DATA FIELD
QUIET
QUIET
START
STOP
LOWER GUARD BAND
CODE
CODE
ZONE
ZONE
OPTIONAL READABLE DATA FIELD
HEIGHT
STARTING
DATA
FIELD
QUIET
ZONE
STOP
CODE
START
CODE
OPTIONAL
READABLE
DATA
FIELD
HEIGHT
STARTING
GUARD
BAND
LOWER
CHECK
OPTIONAL
DIGIT
POSITION
POSITION
CHECK DIGIT
OPTIONAL
QUIET
ZONE