Switch the print font size steps:
1, the printer default font is Font A.
2. Enter "1f 1b 1f 2F 01" in the test software. Click to print a test page. Turn off the printer. (Test software is available for each printer, on the CD)
3. Turn on the printer. Enter “1b 21 01†or “1b 4d 01†and click to print the test page. Turn off the printer. Then, the font is switched to Font B.
4, "1f 1b 1f 2F 00" is to turn off the Font B command.
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