Graphics5–14
Other Bit Image Features
Bit image characters are always plotted as normal characters. Emphasized,
double strike, underlines, and doubling in width commands are ignored when
printing bit image characters. However, single density and double density bit
image may exist in the same line, and it is also possible to include text in the
same line with single density, double density, or with both. Underlines and
other normal character features may appear in a print line that also contains
bit image. Note, however, that the bit image characters are always printed
devoid of underlines or other special features.
Modes 1 and 6
In Modes 1 and 6 it is important to take precautionary steps when mixing text
and bit image data in the same line. These modes require nine steps to print
an uppercase character. A maximum of eight steps can be transmitted in bit
image. If the text is fully printed (contingent upon ESC 3 (n), ESC A (n), or
the normal power–up LF value), there will be a gap in the bit image sections
vertically. A similar situation will occur with text that includes descenders.
In this case, the last row of dots and the dot rows of descenders are cut off.
See Table 5–2 on page 5–5 for more information on available features for
each print mode.
Modes 2 and 5
In Modes 2 and 5, the gap will not occur because the uppercase characters
only occupy seven dot rows. However, the last dot row of descenders is cut
off in these modes for the same reason as explained above.
Modes 3 and 4
Bit image plotting is not available in Mode 3 or 4. However, if the feature is
called on a Mode 3 line, that line is printed in Mode 2, then the printer
returns to Mode 3.
Darker Print
Bit images can be darkened by printing over the data a second time using a
CR. For example:
ESC, K, n1, n2, DATA, (CR) ESC, K, n1, n2, DATA (LF)