Facsimile paper is also known as fax paper, thermal paper, or telecopier paper. It is made of a special paper stock that is coated with a thin layer of thermal material. When the thermal material is heated by the fax machine, it turns black, creating the image of the document being sent.
Facsimile paper is available in a variety of sizes and weights. The most common size is A4 (210 x 297 mm), but other sizes, such as US letter (8.5 x 11 inches) and B5 (182 x 257 mm), are also available. The weight of facsimile paper is typically measured in grams per square meter (gsm), and it can range from 50 gsm to 120 gsm.
Facsimile paper is an essential component of fax machines, and it plays an important role in the transmission of documents.