xerográfiában

Xerográfiában is a Hungarian term that translates to "xerography" in English. Xerography is a dry copying process that utilizes electrostatic charges to produce copies of documents. It was invented by Chester Carlson in the 1930s and commercialized by Xerox Corporation, hence the name.

The xerographic process involves several key steps. First, a light-sensitive drum is electrostatically charged. Then, an image of the original document is projected onto the drum. Areas exposed to light lose their charge, while the dark areas retain their charge, creating an electrostatic image. Next, a finely powdered dry ink, called toner, is applied to the drum. The toner particles are attracted to the charged areas, adhering to the electrostatic image. The toner is then transferred from the drum to a sheet of paper, which is also electrostatically charged. Finally, the paper with the toner is passed through a heated fuser unit, which melts and fuses the toner particles to the paper, creating a permanent copy.

This process forms the basis of modern photocopiers and laser printers. Its invention revolutionized document reproduction, making it faster, more convenient, and more accessible than previous methods like carbon paper or wet chemical processes. Xerography is a fundamental technology in the field of imaging and printing.