Xerox Dc 250 Machine

The name Xerox means "dry writing" in Greek. The word xero means "dry," and graphy means "write." Carlson's invention used a dry, granular ink which replaced the messy liquid ink of the times. The First Xerox Machine The first xerographic copier was sold in 1950.In a photocopier, the light-induced conductivity of the drum is exploited to create a latent image in the form of electrical charges on the surface of the drum. This image is made visible and transferred to paper using a special, charged toner.