Epson ActionPrinter 4500 User Manual page 126

Notice that the dots overlap quite a bit. This design was printed using
the triple-density, 24-pin graphics option because the density is the same
dots per inch) in both directions (horizontal and vertical).
(180
Adding the following lines to the preceding program causes the pattern
to print 10 times in a row as shown below:
15 FOR C-1 TO 10:RESTORE
65 NEXT C
Software and Graphics
Graphics
4-19