Thermal paper is a special fine paper that is coated with a material formulated to change color when exposed to heat. It is used in thermal printers and particularly in inexpensive or lightweight devices such as adding machines, cash registers, and credit card terminals. Technical standards: thermal paper rolls . - Diameter outside roll: + Type 1 (diameter 38 mm) with paper length: 15m. + Type 2 (28 mm diameter) with a paper length of 7.5 m. - Paper core: inside: 11mm; outside 15mm. - Paper width: 57 mm . Safety for the user: Content :Bisphenol A (BPA) 0.115 mg / cm2. - The edges of the paper roll are even, flat. Paper materials :Quantification 60GSM / M2 Coating of chemical substance: uniform, bold When printing on the POS printer does not lose focus. Retention time of 3 months or more. Print embryo: Print engraved logo and other meanings: Printed by Offset printing technology 04 front color and 04 back color (print content changes according to each order) - The end of the roll (before the 25 cm paper runs out) The warning paper out of ink reflected in red color with the content: 25cm longer is paper out.