Kopírky
Kopírky, often referred to as photocopiers, are electronic devices that produce copies of documents and other visual images quickly and cheaply. The process, known as xerography, was invented by Chester Carlson in 1938. Early copiers were mechanical and required manual operation. Modern digital copiers use a scanning process to create a digital image, which can then be reproduced multiple times.
The basic principle of xerography involves a photoconductive drum. This drum is first electrostatically charged. When
Copiers are now ubiquitous in offices, schools, and homes. They have evolved significantly from their early