The Divisibility Rule
When sourcing jumbo rolls for items like POS thermal paper, the width is the most important factor. You must choose a width that is cleanly divisible by your target finished roll width (e.g., 80mm or 57mm), accounting for small losses (trims) caused by the slitting blades.
Example: To produce 80mm finished rolls, a 795mm jumbo roll is ideal.
GSM (Basis Weight)
GSM dictates the quality, opacity, and "feel" of the paper.
48–55 GSM: Lightweight, cost-effective.
60–65 GSM: Mid-weight, standard for general POS and receipt printing.
70–80 GSM: Premium/Heavy-weight.