Toner
Toner is a powder used in laser printers and photocopiers which forms the text and images on the printed paper. In its early form it was simply carbon powder. In order to improve the quality of the printout the individual carbon particles were coated in plastic.
In earlier machines toner was shaken from a bottle into a receptacle in the machine. Modern methods use a disposable cartridge. These discarded cartridges are often refilled by third party vendors.
Toner may have some unknown effects on health.
