Epson PP-100II Technical Reference Manual page 57

When the label file is a rectangle, it is enlarged/reduced keeping the aspect ratio, so that the long side becomes the same as
the diameter of the disc print area (1700  1700). Also, margins appear on the left, right, top or bottom of the print area.
Image before printing
When the label file has margins or trim marks, they are printed as they are.
Image before printing
Chapter 4 Development Guide for a Cooperative Application
Image after printing
Image after printing
Print area of the disc
Outside of the print area of the disc
Label file
Cut area of the label file
Margin
Print area of the disc
Outside of the print area of the disc
Label file
Margin
4
57