Copiers are machines that make copies of documents and images. They work by scanning the original document and then printing out duplicates. This is especially useful in offices, schools, and homes where people need multiple copies of the same paper, like reports or flyers. Modern copiers often combine several functions, including printing, scanning, and faxing, making them versatile tools. Many copiers use toner instead of ink, which helps produce high-quality prints quickly. With the rise of digital technology, some copiers can even connect to computers and smartphones for easy access and sharing of documents.