Photocopier
device · 1959 · Digital age
The Xerox 914.
What it is made of
- Lens — has part. Optics.
Principles and materials it uses
- Xerography — uses. A photocopy.
- Semiconductor — is made of. The photoreceptor drum is a semiconductor (amorphous selenium).
- Carbon — is made of. Toner is carbon black in resin.