A photocopier is a machine which reproduces
copies of documents or illustrations.
An American named G.C. Beidler patented a copying machine in 1906,
based on a dry-plate camera. However, its popularity remained
limited.
In 1938 Chester Carlson decided to attempt to create a photocopier
which used the principle of static electricity. His first version,
launched in the late 1940s, it was too slow to be useful. Finally,
in 1959, he was able to market the first Xerox machine, which had
an output of seven copies per minute. The mass appeal of the
photocopier gradually began to build from this point. Today
photocopiers and their similar cousins laser printers are that
affordable many small home business's have one. Today's machines
use the same basic principals of static electricity created by
Chester Carlson.
Xerox invented the Graphic User Interface (GUI)
in 1970, the concept was adapted by Apple for use on the Mac and
Microsoft for use on Windows during the 1980s.