Epson AP-80 User Guide - Page 68

codes K, L, Y, or Z and, Reassigning a graphics mode, Introduction to Dot Graphics

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Table 6-1. Graphics modes Modes 4-6 in the table are special modes that alter the horizontal density to give proportions of a computer monitor (the CRT modes), or to match the vertical density so as to give round circles (the plotter mode). In two modes, high-speed double-density and quadruple-density, the print head cannot print two consecutive dots with the same pin, so that it can print dots in only half the possible dot positions in any one row. The higher density means that the resolution of the pattern is better than in single-density mode. When you design patterns in these two modes, however, you must see that no dots overlap. Reassigning a graphics mode Another graphics command lets you assign a different eight-pin graphics mode to one of the specific eight-pin graphics commands. You can use it with graphics software programs to quickly change the density and proportions of your printouts. Changing the graphics option changes the width without changing the height. The command for reassigning a graphics mode is ESC ? c m. In this command, c is a letter designating one of the four alternate graphics codes (K, L, Y, or Z) and m is the mode number of the new mode, as listed in Table 6-1. For example, to change the ESC K command to select the CRT I screen graphics mode, the command in BASIC would be the following: LPRINT CHR$(27);"?K";CHR$(4); Introduction to Dot Graphics 6.9

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Table 6-1. Graphics modes
Modes 4-6 in the table are special modes that alter the horizontal
density to give proportions of a computer monitor (the CRT modes),
or to match the vertical density so as to give round circles (the plotter
mode).
In two modes, high-speed double-density and quadruple-density, the
print head cannot print two consecutive dots with the same pin, so
that it can print dots in only half the possible dot positions in any one
row. The higher density means that the resolution of the pattern is
better than in single-density mode. When you design patterns in these
two modes, however, you must see that no dots overlap.
Reassigning a graphics mode
Another graphics command lets you assign a different eight-pin
graphics mode to one of the specific eight-pin graphics commands. You
can use it with graphics software programs to quickly change the
density and proportions of your printouts. Changing the graphics
option changes the width without changing the height.
The command for reassigning a graphics mode is ESC ? c m. In this
command, c is a letter designating one of the four alternate graphics
codes (K, L, Y, or Z) and
m
is the mode number of the new mode, as
listed in Table 6-1.
For example, to change the ESC K command to select the CRT I
screen graphics mode, the command in BASIC would be the following:
LPRINT CHR$(27);"?K";CHR$(4);
Introduction to Dot Graphics
6.9