What is another term used for FAX?

The term "FAX" is indeed another term for "Facsimile." The concept of a fax machine originated from the ability to send a copy of a document over a telephone line. The term "facsimile" captures this function perfectly, as it means to reproduce or replicate documents across distances without requiring the physical presence of the original document.

Other options like "digital scanner," "image copier," and "document printer" relate to document processing but do not capture the essence of what a fax is. A digital scanner is primarily used to convert physical documents into digital format; an image copier duplicates documents; and a document printer produces hard copies from digital files. None of these alternatives reflects the specific purpose and function of sending and receiving documents over a telephone line, which is central to the definition of a fax or facsimile.