What does toner refer to in the context of printing?

In the context of printing, toner specifically refers to a fine powder used in laser printers and photocopiers to create images and text on paper. It is a crucial component in the electrostatic printing process, where the toner adheres to a charged drum and is then transferred onto the paper before being fused with heat. This allows for high-quality printed materials, making it distinct from other printing methods that may use liquid inks or dyes.

The other options refer to different components or functions related to printing and office technology. The computer screen displays information but does not directly relate to the printing process itself. Faxing capability pertains to an entirely different function involving the transmission of documents over a telephone line. External hardware refers to any peripheral device connected to a computer but does not specifically define something intrinsic to the printing process like toner does. Thus, toner is the most appropriate choice when discussing materials specifically used in printers.