Printing Bar Codes
Page B-4
Bar Code Sequences
To print bar codes, the following sequences are used in bar code mode:
BAR CODE SEQUENCE FUNCTION
BEL Sound the Bell.
ESC ESC n Change Emulation Mode
ETX ETX/ACK Software Handshake.
FF Form Feed.
LF Fractional Line Feed (to next line
boundary)
^BNxccc...c^G Horizontal Bar Code.
^BN9xddddccc...c^G Variable Width Horizontal Bar Code.
^Htt Bar Code Height.
^Jttd Relative Vertical Tab.
^Ttttd Absolute Horizontal Tab.
^- Bar Code Pass Terminator.
These bar code sequences are described in detail in the following sections.
Measurements in Bar Code Mode
All measurements in bar code mode are specified in tenths of an inch and/or dots.
Bar codes are printed with a graphics resolution of 144 dots per inch both horizontally
and vertically.
All references to tenths of an inch are in actuality 14/144's of an inch.
All references to dots are in actuality 1/144's of an inch. The range of dots that may
be specified is 0 to 15. This range is represented using hexadecimal convention. The
ASCII characters '0' to '9' represent 0 to 9 dots, respectively. The ASCII characters
'A' to 'F', and 'a' to 'f', represent 10 to 15 dots, respectively.
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