#printing_machine__printer  a machine that prints
  supertype:  machine  any mechanical or electrical device that transmits or modifies energy to perform or assist in the performance of human tasks
  subtype:  addressing_machine__Addressograph  a printer that automatically prints addresses on letters for mailing
  subtype:  character_printer__characterprinter__character-at-a-time_printer__serial_printer  a printer that prints a single character at a time
     subtype:  daisywheel_printer  a printer that uses a daisy print wheel
     subtype:  teletypewriter__teleprinter__teletype_machine__telex__telex_machine  a character printer connected to a telegraph that operates like a typewriter
     subtype:  stock_ticker__stockticker  character printer that automatically prints stock quotations on tickertape
     subtype:  typewriter  hand-operated character printer for printing written messages one character at a time
        subtype:  electric_typewriter  a typewriter powered by an electric motor
        subtype:  portable  a small light typewriter; usually with a case in which it can be carried
  subtype:  electrostatic_printer__electrostaticprinter  a printer that uses an electric charge to deposit toner on paper
     subtype:  laser_printer__laserprinter  electrostatic printer that focuses a laser beam to form images that are transferred to paper electrostatically
  subtype:  impact_printer  a printer that prints by mechanical impacts
     subtype:  bar_printer__barprinter  an impact printer that uses a bar to carry the type slugs
     subtype:  chain_printer__chainprinter  an impact printer that carries the type slugs by links of a revolving chain
     subtype:  wire_matrix_printer__wire_printer__stylus_printer  an impact printer in which each character is represented by a pattern of dots made by wires or styli
  subtype:  line_printer__line-at-a-time_printer  printer that serves as an output device on a computer; prints a whole line of characters at a time
     subtype:  drum_printer  a line printer in which the type is mounted on a rotating drum that contains a full character set for each printing position
  subtype:  page_printer__page-at-a-time_printer  a printer that prints one page at a time
     subtype:  xerographic_printer__xerographicprinter  a page printer that uses the xerographic process
  subtype:  thermal_printer  a printer that produces characters by applying heat to special paper that is sensitive to heat
  subtype:  typesetting_machine__typesettingmachine  a printer that sets textual material in type
     subtype:  Linotype_machine__Linotype  (trade mark) a typesetting machine operated from a keyboard that casts an entire line as a single slug of metal
     subtype:  monotype  a typesetting machine operated from a keyboard that sets separate characters

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