Printronix LQH-HWTM manual Upc-A

UPC-A

UPC-A

The UPC-A bar code structure is shown in Figure 38 and described on the following pages.

Normal

	SR, SC	START CODE		CENTER CODE	STOP CODE
	POSITION
	QUIET	LEFT DATA		RIGHT DATA		QUIET	2- or 5-
	ZONE	FIELD		FIELD		ZONE	DIGIT	HEIGHT
							ADD-ON
NUMBER							CODE
	N						C
SYSTEM
CHARACTER
					CHECK DIGIT FIELD		CHECK DIGIT
		NUMBER SYSTEM	OPTIONAL READABLE				CHARACTER
		CHARACTER FIELD		DATA FIELD	NUMBER SYSTEM
	SR, SC				CHARACTER FIELD
	POSITION

INV

2- or 5-			QUIET
	DIGIT		ZONE
ADD-ON
CODE
		C

CHECK DIGIT

CHARACTER

		QUIET	HEIGHT
		ZONE
RIGHT DATA		LEFT DATA
FIELD		FIELD	N
STOP CODE	CENTER	START CODE	NUMBER SYSTEM
	CODE
CHECK DIGIT FIELD			CHARACTER

CCW

SR, SC

POSITION

STOP CODE

CHECK

DIGIT

FIELD

CENTER CODE

START CODE

2- or 5-

DIGIT

ADD-ON

CODE

QUIET

ZONE C

RIGHT

DATA

FIELD

LEFT

DATA

FIELD

QUIET

ZONE N

HEIGHT

SR, SC

POSITION

START CODE

CHECK

DIGIT CHARACTER

OPTIONAL

READABLE

DATA

FIELD

OPTIONAL

READABLE

DATA

FIELD

STOP CODE

NUMBER

SYSTEM

CHARACTER

FIELD

NUMBER

SYSTEM

CHARACTER

QUIET	N	SYSTEM	CW
ZONE		NUMBER

CHARACTER

NUMBER

SYSTEM

CHARACTER

FIELD

LEFT

DATA

FIELD

CENTER

CODE

RIGHT

DATA

FIELD

CHECK

DIGIT

FIELD

QUIET
ZONE	CHECK
C	DIGIT
	CHARACTER

2- or 5-

DIGIT

ADD-ON

CODE

HEIGHT

Figure 38. UPC-A Structure

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