Dual mode electrophotographic apparatus having dual function printing beam

A dual mode of operation electrophotographic copier/printer apparatus wherein a charged photoconductor is discharged in accordance with an image to be reproduced;

• optical means operable to discharge said photoconductor in accordance with the reflected image of an original document when said apparatus is in the copier mode of operation;
• electrical means operable to supply an output signal whose time varying characteristics define a visual image;
• a raster scanning beam controlled by said electrical means and operable to discharge said photoconductor in accordance with said time varying characteristics when said apparatus is in the printer mode of operation;
• and
• border discharging means operable when said apparatus is in the copier mode of operation to control said raster scanning beam to discharge the area of said photoconductor bordering the area which coincides with the reflected image of said original document.

A dual mode of operation electrophotographic copier/printer apparatus wherein a latent image is formed on a photoconductor as said apparatus operates in a copy or a print mode,

• charging means operable to charge said photoconductor,
• raster scanning means operable in both the copy and print mode to discharge a border portion of said photoconductor to thereby form a residual charged area,
• copy means operable in the copy mode to discharge said residual area in accordance with the reflected image of an original document, and
• print means operable in the print mode to discharge said residual are in accordance with an electrical signal which defines an image to be printed,
• only one of said copy means or said print means being operable at any given time.