Dual mode electrophotographic apparatus having dual function...

Details Dual mode electrophotographic apparatus having dual function... Dual mode electrophotographic apparatus having dual function...

G - Physics

03

G

314/7

G03G 15/22 (2006.01) G03G 15/047 (2006.01)

Patent

CA 1075758

DUAL MODE ELECTROPHOTOGRAPHIC APPARATUS HAVING DUAL FUNCTION PRINTING BEAM Abstract of the Disclosure A dual mode xerographic copier/printer is selec- tively operable to form a latent image of an original document on a photoconductor, or to raster-scan the photo- conductor with a laser printing beam which is under the control of a binary-data-defined image to thereby form a latent image thereof. The latent image, whether it is formed in the copy mode or the print mode, is toner developed. The developed image is then transferred to a sheet of copy paper. This copy paper may be of variable size. In the copy mode, the laser printing beam is con- trolled to erase the photoconductor bordering that photo- conductor area which will coincide with the sheet during transfer, i.e. bordering the latent image of the original document. In the print mode, a data processor formats the binary-data-defined image to fit into a photoconductor area compatible with the size of the copy paper. The resulting electrical signals then control the laser printing beam to erase the entire photoconductor, exclusive of the binary-data-defined image. BO9-75-006

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