A copy machine, also known as a photocopier, is a device that makes duplicate copies of documents and images. It works by using light to scan the original document, which is then reproduced onto paper. Most copy machines can produce multiple copies quickly and efficiently, making them essential in offices, schools, and other settings where document duplication is needed. Modern copy machines often come with additional features, such as scanning, faxing, and printing capabilities. They can handle various paper sizes and types, and many are equipped with digital interfaces for easy operation. Some advanced models even allow for color copying and double-sided printing, enhancing their versatility in everyday tasks.