Epson FX 30B$=CHR$(127)+CHR$(42), Figure 11-2. No overlapping dots, Figure 11-1. High-Speed Double-Densitydots

Pattern	(Overlapping dots)
Prints as	In double-density mode
	at High Speed

Figure 11-1. High-Speed Double-Density dots

To check this out, change the pin patterns in line 30 from 85 to 127, the sum of the labels for pins 1 through 7:

30B$=CHR$(127)+CHR$(42)

As Figure 11-2 shows, the repeated dots, the ones called for by the CHR$(42)--pins 2, 4, and 6--are not printed at all. The print head is moving too fast to retract the pins and then instantly fire them again, so the FX’s program suppresses them.

Figure 11-2.No overlapping dots

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