Upc–a, Bar codes 5–104, Figure 5–27. upc–a structure – Printronix ThermaLine Series User Manual

Page 242

Bar Codes

5–104

UPC–A

The UPC–A bar code structure is shown in Figure 5–27 and described on the

following pages.

QUIET
ZONE

CHECK

DIGIT

LEFT

DATA
FIELD

CENTER CODE

RIGHT

DATA
FIELD

QUIET
ZONE

STOP CODE

QUIET

ZONE

START CODE

CENTER CODE

CHECK DIGIT FIELD

STOP CODE

LEFT DATA

FIELD

RIGHT DATA

FIELD

HEIGHT

QUIET

ZONE

SR, SC

POSITION

FIELD

START CODE

OPTIONAL READABLE

OPTIONAL
READABLE
DATA
FIELD

QUIET
ZONE

CHECK
DIGIT

LEFT

DATA
FIELD

RIGHT

DATA
FIELD

QUIET
ZONE

HEIGHT

FIELD

QUIET

ZONE

START CODE

CENTER

CHECK DIGIT FIELD

STOP CODE

LEFT DATA

FIELD

RIGHT DATA

FIELD

HEIGHT

QUIET

ZONE

SR, SC

POSITION

SR, SC

POSITION

NUMBER
SYSTEM
CHARACTER

NUMBER
SYSTEM
CHARACTER
FIELD

CHECK
DIGIT
CHARACTER

STOP CODE

SR, SC
POSITION

START CODE

NUMBER
SYSTEM
CHARACTER
FIELD

CENTER
CODE

CHECK DIGIT
CHARACTER

CODE

CHECK DIGIT
CHARACTER

NUMBER SYSTEM
CHARACTER FIELD

DATA FIELD

2– or 5–

DIGIT

ADD–ON

CODE

2– or 5–

DIGIT

ADD–ON

CODE

2– or 5–

DIGIT

ADD–ON

CODE

2– or 5–

DIGIT

ADD–ON

CODE

Figure 5–27. UPC–A Structure