Koopiamasinasse

Koopiamasinasse, often referred to as a photocopier or xerographic copier, is an electrophotographic machine used to create copies of documents, photographs, and other visual images onto paper or other media. The process typically involves a light-sensitive drum, a toner powder, and a fusing mechanism. When a document is placed on the glass and the machine is activated, a light scans across the original. Areas that are white reflect light, while dark areas absorb it. This light then strikes the drum, which is electrostatically charged. The light causes the charge on the drum to dissipate in the areas corresponding to the white parts of the original. A fine powder, known as toner, which is also electrostatically charged, is then attracted to the charged areas of the drum, forming a replica of the original image. This toner image is then transferred to a sheet of paper, which is passed through heated rollers that fuse the toner permanently onto the paper. Early models were complex and expensive, but advancements in technology have made them more affordable, faster, and capable of producing higher quality copies. Modern digital copiers often incorporate scanning and printing capabilities, blurring the lines between copiers, printers, and scanners. They are ubiquitous in offices, schools, and homes worldwide, facilitating the rapid duplication of information.