Thermal fax paper is made of thermal paper, and the required characters and graphics are formed by thermal technology. Mainly used in fax machines, printers and other equipment.
The main sizes of fax paper are A4, A3, B4 and B5 (210mm×297mm, 297mmx420mm, 250mmx353mm, 176mmx250mm, 841mm×1189mm).
There are also some small-sized fax papers mainly used for fax documents: 210mm×30mm, 210mm×50mm, 210mm×100mm, etc.
The standard specification of fax paper is determined by the international standard IS0/IEC7810. Its size, thickness and weight are strictly measured and tested, which can ensure the quality of documents transmitted by fax machines.