As with digital photocopiers, laser printers employ a xerographic printing process. Digital photocopiers were essentially high-end laser printers with integrated scanners. In addition, other equipment like printers, photocopiers, telephone and fax lines were also provided. The introduction of desktop computers, printers, networks and photocopiers meant additional demand. Transparencies for overhead projectors could be printed by some photocopiers. Jet airliners, televisions, hair-dryers, coffee machines and photocopiers are used in Germany. Electrostatic plotters used a dry toner transfer process similar to that in many photocopiers. Toothed belts are used widely in mechanical devices, including sewing machines, photocopiers and many others. Behind the printer and photocopiers you will also find two bookable meeting rooms. Flat-panel membrane keyboards are most often found on appliances like microwave ovens or photocopiers. Voltage multipliers can still be found in modern TVs, photocopiers, and bug zappers. Other industrial applications included photocopiers, industrial automation, professional light measurement instruments and auto-exposure meters. It can be used as a phosphor in fluorescent lamps in photocopiers and other devices. Corona discharges are used in photocopiers. The advent of photocopiers made the practice easier and more flexible.