This is called “Dot Matrix Printing”.
Dots are printed according to a
(2) Character and line spacing
Line spacing means the pitch from the top of dots that forms 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
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
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.
3 dots = 1124”
12dots =1/w
- Line spacing
(a) 1/8” line spacing | (b) 1/6" line spacing |
- 5 4 -