graphotype

1 definition found

graphotype - Collaborative International Dictionary of English v.0.48 :

  Graphotype \Graph"o*type\, n. [Gr. gra`fein to write + -type.]
     (Engraving)
     A process for producing a design upon a surface in relief so
     that it can be printed from. Prepared chalk or oxide of zinc
     is pressed upon a smooth plate by a hydraulic press, and the
     design is drawn upon this in a peculiar ink which hardens the
     surface wherever it is applied. The surface is then carefully
     rubbed or brushed, leaving the lines in relief.
     [1913 Webster]