The Collaborative International Dictionary
Ductor roller
Ductor \Duc"tor\, n. [L., fr. ducere to lead.]
One who leads. [Obs.]
--Sir T. Browne.-
(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.