Epson MX-80 F/T Type II, Operation Manual

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(2) Character and line spacing
Line spacing means the pitch from the top of dots that form a character on a
line to the top of dots on the next line.
It is absolutely necessary to separate characters vertically for ease in reading
each sentence. Most typewriters and printers have a switch or lever to change
the line spacing (1/6” or 1/8”). The MX-80 Type II also can do this by DIP
switch setting, of course. In addition, you can set it programmably with some
ESC codes with a range from 1/72” to 85/72”.
See what happens when you set the line spacing to 1/8” and 1/6”.
Look at the following figures, (a) and (b). The line spacing, i.e. the pitch from
the top of upper “g” or “G” character to the top of the “g” or “G” on the
next line is 1/8”. That corresponds to 9-dot skipping. If you type a “g” on the
first line and a “G” on the next line, the 2 characters will be close to each
other. This is a little bit hard to read in a long message including upper case
characters and lower case ones. In other uses, however, this line spacing is
effective. You can understand its effectiveness when using the bit image mode.
On the other hand, with 1/6” line spacing, there is no problem even if upper
case characters and lower case ones are mixed in a message. In this case, a
minimum of 1/24” line spacing is created between characters vertically. If you
want greater line spacing or less, input the ESC A control code.
2. Definitions of Some Terms Often Used
Before looking at the printer in detail, some terms should be defined first so that
you can understand them more easily and in less time.
They are:
•
ASCII code
l
Escape codes
l “+” symbol
l 2, D and H
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