APPARATUS AND METHOD OF SUCCESSIVELY RECORDING INFORMATION CARRIED BY ELECTRO-MAGNETIC RADIATION BEAM

摘要

An apparatus for recording information carried by an electro-magnetic radiation beam. The apparatus has a recording unit having two electrodes (14 and 24), one of the electrodes being earthed, a photoconductive member (26) and a recording member (16) capable of holding electric charges, the members being arranged so as to face each other between the electrodes. An electro-magnetic radiation beam carrying information to be recorded is directed to the photoconductive member (26) under presence of a voltage across the electrodes. Conductivity of the photoconductive member (26) then varies according to the information so that electric charges are generated in the photoconductive member (26). An electric field is then generated and is applied to the recording member (16). Thus, an electric charge image corresponding to the information is formed on the recording member (16). An electro-magnetic radiation beam is directed to the photoconductive member (26) to increase the conductivity thereof so that the electric charges generated in the photoconductive member (26) flow to the ground via the earthed electrode.