Fax Machine

Forgotten Technology · 1843

Fax machines scanned documents, transmitted their visual information through communications networks and reproduced them at another location. Alexander Bain patented an early facsimile system in 1843, long before telephone-connected office machines became commonplace.

Why It Mattered

Fax changed the speed of document exchange by allowing contracts, forms and handwritten pages to cross long distances in minutes. It became part of the everyday infrastructure of offices, hospitals and public institutions before email and online document services displaced much of its role.

From Bain’s Patent to Office Fax

Scottish clockmaker Alexander Bain patented an early system for transmitting images in 1843.
Later facsimile technologies combined synchronised scanning, photoelectric sensing, telephone connections and printing mechanisms.
Commercial systems became increasingly common from the 1960s, with broad office adoption during the 1980s and 1990s.

Scanning and Reconstruction

A transmitter scanned a document line by line and encoded light and dark areas as electrical signals.
A receiving machine decoded those signals and reconstructed the page remotely.
Thermal-paper and plain-paper machines brought the process into ordinary workplaces.

Decline in the Digital Era

Email, cloud storage, electronic signatures and online document systems reduced everyday fax use.
Fax remained in limited use where established procedures or compatibility requirements persisted.
Museum collections preserve its place between telegraphy and internet-based document exchange.