Photocopying is done by a machine that can make copies of paper documents and other visual images. They typically do this using a standard copying process called xerography which uses electrostatic charges on a light-sensitive photoreceptor. The photoreceptor attracts and then transfers powder toner particles onto the paper exactly representing the image being scanned.
The toner is then fused to the paper using either pressure or heat or a combination of the two. Many organizations widely use photocopying however more and more so it is being displaced by digital scanning and transmission and storage of documents in electronic form.