The word "xerox" is commonly used as a synonym for "photocopy" (both as a noun and a verb) i.e. to make a copy with a Xerox photocopy
machine.
Xerox was founded in 1906 as the Haloid Company, changed their name in 1958 to Xerox and came to prominence in 1959 with the introduction of the first plain
paper photocopier using the process of xerography developed by
Chester Carlson.
The novelty and popularity of the Xerox photocopiers made them a household name in the
USA for decades after.
While the "xerox" word is commonly used as a synonym for "photocopy", the company Xerox is concerned about the ongoing
use of it, because it put the brand name in danger of being declared a generic word by the courts.
From
Kojak: Season 1 - Episode 8 "Dark
Sunday" (1973).
Kojak: The
map you gave me, I had it xeroxed and gave the original to Valano to put into Arties room.