Printronix ThermaLine Series - Manual (Page 236)

Bar Codes 5–98
POSTNET
The POSTNET bar code structure is illustrated in Figure 5–24 and
Figure 5–25 and described on the following pages. The POSTNET code can
be a part of the address block and appear anywhere within a vertical 4–inch
area across the length of the mailpiece.
Return Address Area Postage Area
1/2” 1/2”
BAR CODE DATA FIELD START STOP
CLEAR ZONE
CODE CODE
SR, SC
POSITION
CLEAR ZONE
CHECK DIGIT
NOTE: Illustration is not to scale
CLEAR
ZONE CLEAR
ZONE
ADDRESS BLOCK BAR CODE READ AREA
4”
Figure 5–24. POSTNET Structure
NOTE: Additional information regarding POSTNET bar code requirements
can be obtained from the U.S. Postal Service’s Publication 25: A
Guide to Business Mail Preparation.