164 Universal Control Commands
•
a
b
= 1: Near Letter Quality. Send 40 columns of character data
for c1 through cx. These characters may be printed only when NLQ
printing is enabled.
See "Print Quality" earlier in this section.
Both a
a
and a
b
must be provided for each character in the range n1
through n2.
c1 through cx specify the columns of pin fire patterns for the downloaded
character, and the intercharacter space. For example, if a1
b
= 0, send 10
columns of data: (c1)...(c10). If a1
b
= 1, send 40 columns of data:
(c1)...(c40).
c1 through cx must accompany each character specified by a
a
and a
b
in
the range n1 through n2.
To calculate c1 through cx, design the character within a matrix as shown
earlier in this subsection.
Note:
All cells may be defined, but the printer ignores any data entered in
Column 10 (draft) and Columns 20 and 40 (NLQ).
Use the columns on the right side of the matrix to define the space
between characters. The standard intercharacter space is two columns
(Columns 8 and 9).
When the character is designed, add the cell values vertically by column
for each row, beginning at the upper left. In the examples shown on the
next page, the cell values for ascending characters are shown on the left
side of the matrix. Ascending characters are printed by the top eight pins
of the printhead. The cell values for descending characters are shown on
the right side of the matrix. Descending characters are printed by the
bottom eight pins of the printhead.
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