Brother BT-1000 User Manual - Page 22

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Codabar is unusual because some characters are wider than others. With 2-element

widths defined, each character contains 4 bars and 3 spaces. The character is

followed by a single narrow space to separate it from the next character. Each

pattern begins and ends with one of 4 start/stop characters A-D.

Codabar defines different element widths for each of the characters in an effort to

make all the characters have the same width. (Rationalized Codabar uses the same

patterns, but assigns only 2 element widths for wide and narrow.)

5.2 PCL Escape Sequences

From UNIX or DOS it is necessary to send PCL escape sequences as part of the

print data to select the desired bar code font. The PCL escape sequences for the

fonts are shown on the PCL font list. Instructions on how to print the PCL font list are

given in your printer manual.

Font Name

PCL Escape Sequence

Codabar-Regular : esc(26Yesc(s1p#v0s0b28702T

(# : point size 0.25 - 999.75)

Replace the hash (#) with the relevant point size. For example, to print a bar code

that is one inch (25.4 mm) high, substitute '#' with '72'. To print a bar code half and

inch (12.7 mm) high, use 36.

After printing a bar code it is necessary to select a different font in order to print

something besides more bar codes. The PCL command to select the default font is

"<esc>(3@". To select a font other than the default font, use the PCL escape

sequence show on the PCL font list. The "<esc>" shown is the ASCII escape

character. It is decimal 27, hexadecimal 1B, octal 33, or binary 00011011.