These rolls measure 79mm in width and have an 80mm diameter, which is a common size compatible with most standard thermal receipt printers, cash registers, and ETR machines. The paper is heat-sensitive and coated with a specialized chemical layer to produce clear text and graphics when exposed to heat from the printer's print head. High-quality versions of these rolls are designed to resist fading and smudging, ensuring that receipts and records remain readable for an extended period. The inner core size is often specified as 13mm, which is another crucial factor for ensuring proper fit and smooth feeding in compatible machines.