5525B/31/32 Line Matrix Printer LinePrinter Plus Programmer's Reference

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Chapter 4 Configuring the Epson FX-1050 Emulation with Control Codes
Double High Print, Set/Reset
ASCII Code ESC w n
Hex Code 1B 77 n
Dec Code 27 119 n
Purpose Turns double-high character printing on and off. Double-high
characters are standard width but twice as high.
where
n = 1 or 49 (hex 01 or hex 31) turns double high printing on
n = 0 or 48 (hex 00 or hex 30) turns double high printing off
Discussion The OCR A and OCR B fonts cannot be printed in double high.
NOTE: It is recommended to use double Line Feeds and Carriage Returns
when double-high character printing is on (after an ESC w control
code has been sent), or else the printer will overstrike text that has
already printed.
If Superscript/Subscript (ESC S) or Condensed Print (SI) is
combined with Double High printing,
only Double High printing
will occur.
Example The following sample illustrates double-high character printing.
Double Strike
ASCII Code ESC G
Hex Code 1B 47
Dec Code 27 71
Purpose Makes text bolder by double printing each dot twice.
Discussion This command makes text bolder by printing each dot twice, the
second dot offset to the right of the first by a distance equal to
1/2 the width of a dot, the same as with ESC E.
Example The following sample illustrates double strike character printing.