A toner applicator for delivering an optimum amount of toner powder to a recording electrode of an electrographic recording system whereby a portion of said toner may be electrographically deposited on a recording medium in the form of toner images. The toner is fed from a toner reservoir onto the recording...http://www.google.es/patents/US3946402?utm_source=gb-gplus-sharePatente US3946402 - Toner applicator for electrographic recording system
Toner applicator for electrographic recording system
