Xerox is a brand name that has become synonymous with photocopying. It refers to the process of making copies of documents or images using a machine called a photocopier. This technology uses light to scan the original document and then reproduces it on paper, allowing for quick and efficient duplication. The first commercial photocopier was introduced by Xerox Corporation in 1959, revolutionizing the way businesses and individuals handled paperwork. Today, photocopiers come in various models, including multifunction devices that can print, scan, and fax, making them essential tools in offices and schools worldwide.