Chester Carlson invented coping onto dry paper, 75 years ago.
He called the process electrophotography, back then in 1938.
According to Xerox, the invention led to the founding of the Xerox Corporation.
Carlson's process was renamed xerography, which means, dry writing.
Now, Xerox is planning a series of activities to celebrate innovation in the company's history and its future.
Xerox CEO Ursula Burns says such an anniversary is a time to look back, but to also focus on the future.
The theme of the anniversary year is The Next 75.