szárazpapírmásoló

A szárazpapírmásoló, commonly known by its English name, dry paper copier or electrostatic copier, refers to a type of photocopier that uses an electrostatic process to create copies. This technology was a significant advancement in document duplication, offering a faster and more efficient method than earlier techniques like the wet process or mimeograph.

The fundamental principle behind a dry paper copier involves creating an electrostatic image on a photoconductive drum. Light reflected from the original document is projected onto this drum, which is initially charged. The areas of the drum exposed to light lose their charge, while the areas corresponding to dark parts of the original retain their charge. A toner powder, which is electrostatically charged to a different polarity, is then attracted to the charged areas of the drum. This toner image is subsequently transferred to a sheet of paper, and finally fused onto the paper using heat or pressure, creating a permanent copy.

Early dry paper copiers, such as those developed by Chester Carlson, paved the way for modern xerography. The term "Xerox" itself became synonymous with photocopying due to the success of the Xerox Corporation, which commercialized this technology. These machines revolutionized office environments by making it easy to duplicate reports, memos, and other documents quickly and accurately. While newer digital technologies have largely superseded older electrostatic copiers, the underlying principles of electrostatic imaging remain relevant in some imaging applications.