Epson TM-300A Operator's Manual page 69

To avoid this, write software so that half-dots are not adjointed horizontally. For
example, set the right side spacing of character to 1 or more (ESC SP). In this
case the user should note that the total number of dots in the horizontal
direction is 400.
Example: If the following codes are transmitted, some dots are not printed.
(Graphic character <B2>H + "H" double-height enlarged)
PRINT #1, CHR $ (&HB2)
PRINT #1, CHR $ (&H1B) ; "!" ; CHR $ (&H11);
PRINT #1, "H" ; CHR $ (&HA) ;
When the data is buffered in the print buffer.
dots are deleted by the previous character and not printed in
the print buffer.
Printed result (When uni-directional printing).
dots are not printed.
To
avoid this, write the software as follows.
(Set the right-side spacing of graphic character <B2>H to 1.)
PRINT #1 , CHR $ (&H1B) ; " " ; CHR $ (1); CHR $ (&HB2)
PRINT #1, CHR $ (&H1B) ; "!" ; CHR $ (&H11);
PRINT #1, "H" ; CHR $ (&HA) ;
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