Epson LQ-2550 User Manual page 124

The actual pattern the printer prints on paper is made up of dots
that the
that overlap each other both vertically and horizontally. The reason the
planning grid uses x for dot is that using an accurate
an each
representation of dots makes calculating the data numbers difficult
the
because they cover each other. Therefore, remember that
each x
represents the center of a dot, and the dots actually overlap.
Write the assigned values of the pins next to your design and then total
the values for column of dots. These totals are the values that will
each
be sent to the printer as graphics data.
The following figure is the same grid divided into three sections to make
the data calculation easier. At the bottom of each section of each column
is the total of the pin numbers for that section. This gives you a total of
data numbers necessary to print this small figure.
126
Using Software and Graphics
4-19