A photo-copier is a device that makes copies of printed material or images. However, there are many other names for this useful machine that we use in our offices, schools, and public places. Some of the synonyms for photo-copier include Xerox machine, copy machine, copier, duplication machine, photostat machine, and reprographic machine. These different names help us to understand the functionality and purpose of the device. Regardless of the name we use, the photo-copier remains a staple in our modern-day offices and helps us to rapidly replicate documents and images for a wide range of purposes.