Intermediate Positions; All Dots In Main Columns; Use Of Intermediate Positions 4 And - Epson FX-80 User Manual

To print a capital H as in Figure 3-2b, the print head fires pins 1
through 7 in column 1; pin 3 in columns 2, 3, and 4; and pins 1
through 7 again in column 5.
Intermediate
positions
Most characters are designed to be 5 or less columns wide. As we
saw in Figure 3-1, leaving the sixth column blank allows for space
between each pair of letters. Only one character in the ROM uses all 6
dot positions-the underline character (Figure 3-3) .
•
Figure 3·3. All dots in main columns.
All the rest fit neatly into the 5-dot format, freeing the sixth column
for spacing. But use of 5 dots does not give quite enough detail for the
highest quality characters. So the FX-80 prints some dots halfway be-
tween the main columns in the 6-dot-wide matrix. This means that the
matrix grid for any character actually contains 11 columns-6 main
columns with 5 intermediate columns. You can count the 11 positions
on the grid shown in Figure 3-4.
2 4 6 8 10
1 3 5 7 9 11
Figure 3·4. Use of intermediate positions 4 and 6.