Star Micronics SB-15 user manual High Resolution Graphics

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HIGH RESOLUTION GRAPHICS

Up until now all of the dot graphics printing we have done has been with SD-IO/IS’s normal density mode. This can give you some pretty sharp images at great speed. Sometimes though, you may want to create an image with even higher resolution. SD-lo/l 5 has seven graphics modes you can use; they’re sum- marized in Table 10-2.

The command syntax for all of the commands is the same- just as you have learned it for the < ESC > “K” (normal density) command. The number of columns to be printed is nl + 256 * n2.

So what do these different modes do? On the following pages are actual size reproductions of printouts of the same image printed in each of the four typical different graphics modes. They were all printed using the plotting program in this chapter (with a rather complex set of formulas starting at line 600!).

Normal density graphics

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