Brother  HL-4140CN, Technical Reference Manual

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CHAPTER 2 PCL - 57
 The selection will apply to whichever font you are currently specifying (primary or secondary).

If the printer doesn't have the specified size font, the next largest size font is used. If the printer doesn't
have a larger sized font, the next smallest one is used.
 This value is ignored by the printer when a proportional spaced font is selected.
10 REM ****** CHARACTER PITCH SELECTION ******
20 ESC$=CHR$(27)
30 WIDTH "LPT1:",255
40 REM --- SELECT A 10 CPI PITCH FONT ----
50 LPRINT ESC$+"(s10H";
60 FOR I=33 TO 127
70 LPRINT CHR$(I);
80 NEXT
90 LPRINT
100 REM --- SELECT A 12 CPI PITCH FONT ---
110 LPRINT ESC$+"(s12H";
120 FOR I=33 TO 127
130 LPRINT CHR$(I);
140 NEXT
150 LPRINT
160 REM --- PAPER EJECT ---
170 LPRINT CHR$(12);
180 END
5.2.8. Selecting the height
Esc(s#V (27)(40)(115)#(86) <1Bh><28h><73h>#<56h>
This command designates the height of the primary font.
Esc)s#V (27)(41)(115)#(86) <1Bh><29h><73h>#<56h>
 This command designates the height of the secondary font.

# is the size in points (1/72") from 0.25 to 999.75 in 0.25 increments.
 This value is ignored by the printer when a fixed-spaced scalable font is selected.
5.2.9. Scaling the scalable fonts vertically or horizontally
EscCR!#H (27)(13)(33)#(72) <1Bh><0Dh><21h>#<48h>
This command designates the height of the scalable fonts.
EscCR!#V (27)(13)(33)#(86) <1Bh><0Dh><21h>#<56h>
This command designates the width of the scalable fonts.
 # can be from 0.25 ~ 3.00 in 0.01 increments.
 # value is set to 0.25 when # is specified less than 0.25, and # value is set to 3.00 when # is specified bigger
than 3.00.
 The value set by this command is initialized when the emulation is changed, a printer Reset, Test Print or
Macro overlay is executed.
5.2.10. Selecting the style
Esc(s#S (27)(40)(115)#(83) <1Bh><28h><73h>#<53h>
 This command designates the style of the primary font.
Esc)s#S (27)(41)(115)#(83) <1Bh><29h><73h>#<53h>
 This command designates the style of the secondary font.

If you select a particular style (for example upright condensed outline) the command will only take effect if
the font is available in one of the three font locations.