Epson LX-86, Руководство пользователя

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Line 20 begins a loop to produce multiple print lines. Lines 30 and
40 were covered above, but an LPRINT is added to line 50 to pro-
duce a line feed after line 40. Lines 60 and 70 are like lines 30 and 40
except that lint! 70 uses a reversal of the patterns in line 40. As the loop
is executed, the program prints lines 40 and 70 alternately so that the
patterns of the print lines will fit together well.
Notice that the graphics command can be in effect for only one
print line. The command is in lines 30 and
60
so that it is issued each
time a new print line is begun. You cannot print more than one line of
graphics without having the graphics command issued more than
once.
Line 90 is the reset code to return the printer to its defaults.
Density Varieties
Although all the examples so far in this chapter have been in the
single-density graphics mode, the
LX-86
offers five other eight-pin
density modes and two nine-pin ones. Nine-pin graphics is not neces-
sary for most uses, but you can find its command (Escape “ ^ “) in
Appendix C. All the eight-pin densities and their commands are
described in Table 9-l.
Table 9-l. Graphics modes
M o d e
Density
A l t e r n a t e
code
Description
0
1
2
3
4
5
6
Single
ESC "K"
Low-Speed ESC "L"
Double
High-Speed
ESC "Y"
Double
Quadruple
ESC "Z"
CRT
none
One-to-one
none
(plotter)
90 dots/inch none
60 dots/inch:
480 dots/8" line
120 dots/inch
960 dots/8 line
120 dot positions/inch
Faster than Mode 1; does not print
consecutive dots in a row.
240 dot positions/inch; 1920 dot
positions/8" line. Does not print
consecutive dots in a row.
80 dots/inch;
640 dots/8" line
72 dots/inch;
576 dots/8" line
Produces the same density hori-
zontally as vertically, which makes
circles look round.
90 dots/inch;
720 dots/8" line
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