ZT220 print area issue

Hi.

Why there is unprintable fields (5mm) on left and right sides? We using 60mm width labels with this printer.

issue.jpg

I was trying sending commands from PC: "Reset printer" and "Load factory defaults" - thats change nothing. Configuration label (printed even from printer itself, not from PC) is also printing with such fields.

What should I do to make the printer use full width?