ELECTROGRAPHIC RECORDING APPARATUS

摘要

Electrographic Recording Apparatus Electrographic apparatus providing electrograhic stylus recording using magnetically attractable toner powder supplied to a recording region while electrical signals are applied to styli (1) to deposit toner powder onto a receptor recording member (3). At least one side of the stylus array has a rotatable sleeve member (13) with an enclosed magnet (4) disposed near the stylus array (1) to remove excess toner powder that is magnetically drawn from the recording region. A toner removal means (18) removes toner powder drawn to the sleeve member (14) for return to a toner powder hopper (6). The toner removal means can be a stationary sleeve (19) within which a rotatable magnetic assembly (20) is carried. The stationary sleeve is positioned near the rotatable sleeve to remove toner powder that is carried by the rotatable sleeve. Toner powder is directed to a flange (21) on the stationary sleeve (19) and, thence, to a pathway (22) providing for return of the toner powder to the toner powder hopper. The toner removal means can also be a magnetic shunt member for the magnet and/or a blade member positioned near the rotatable sleeve member.