Explanation – Xerography is a widely used photocopying and printing technology, and it works on the principle of electrostatic attraction and the use of a photosensitive drum.

Electrostatic attraction is the force that exists between objects with opposite charges. When a photoconductive surface is charged, it attracts toner particles, which are negatively charged. The toner particles then adhere to the photoconductive surface, creating a latent image. This latent image is then transferred to a piece of paper and fused, creating a permanent image.

The principle of electrostatic attraction is applied in other areas such as – Air purifiers, Paint sprayers, Microelectronics, Medical devices, etc.

Source: ForumIAS