Photocopying – Contact printing – Light boxes
Patent
1993-12-02
1995-09-19
Smith, Matthew S.
Photocopying
Contact printing
Light boxes
355221, G03G 1502
Patent
active
054520614
ABSTRACT:
An electrophotographic image formation apparatus using a photoconductor which is composed of a substrate, a photoconductive layer provided on the substrate, and a protective layer formed directly or via an intermediate layer on the photoconductive layer and capable of performing an electrophotographic process including the steps of conducting a first charging for uniformly charging the surface of the photoconductor, exposing the charged surface of the photoconductor to light images to form latent electrostatic images corresponding to the light images, developing the latent electrostatic images to toner images, transferring the toner images to a transfer sheet, cleaning the surface of the photoconductor to remove residual toners therefrom, and fixing the toner images to the transfer sheet, includes a charger for charging the photoconductor with a polarity opposite to that of the charge applied in the step of the first charging prior to the step of the first charging.
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Ikuno Hiroshi
Kojima Narihito
Nagame Hiroshi
Ricoh & Company, Ltd.
Smith Matthew S.
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