Epson 4500 - Manual (Page 109)

Enhancing Your Printing
You can obtain a wide variety of printing effects with your printer,
from changing the number of characters per inch to using special effects
on selected words and phrases. This section gives you a sampling of the
features you may select with your software.
For software control of these features, see the instructions for your
application programs or look up their specific commands in the
Command Summary in Chapter 9.
Character Spacing
To add greater variety to your documents, your printer has three cpi
spacings, as well as proportional spacing. Each one can be selected with
a software command.
For each of the three built-in fonts, you can choose a character spacing
of 10, 12, or 15 characters per inch, or proportional spacing. The
printout below compares the three cpi spacings:
This is 10 cpi printing.
This is
12
cpi printing.
This is 15 cpi printing.
As shown above, 15 cpi characters are only about two-thirds the height
of 10 and 12 cpi characters. This makes 15 cpi particularly useful when
you want to separate certain material from the main text.
In fixed cpi spacing each character is given the same amount of space.
The width of proportional characters, however, varies from character
to character. For example, a narrow letter like i takes less space than a
wide letter like W. The width of each proportional character is given in
the Appendix.
4-2 Software and Graphics