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The Collaborative International Dictionary
Ductor roller

Ductor \Duc"tor\, n. [L., fr. ducere to lead.]

  1. One who leads. [Obs.]
    --Sir T. Browne.

  2. (Mach.) A contrivance for removing superfluous ink or coloring matter from a roller. See Doctor, 4.
    --Knight.

    Ductor roller (Printing), the roller which conveys or supplies ink to another roller.
    --Knight.