Photocopying – Contact printing – Light boxes
Patent
1988-04-22
1990-10-09
Braun, Fred L.
Photocopying
Contact printing
Light boxes
355296, 355299, G03G 1506, G03G 2100
Patent
active
049624083
ABSTRACT:
An image formation apparatus having a cleaning process for removing defective toner from the developing unit during a non-image formation rotation of the photoreceptor drum. The image formation apparatus includes a reverse polarity charger for charging the photoreceptor drum to an opposite polarity from the polarity that is used for forming an electrostatic latent image. The reverse polarity charger allows defective toner to be removed from the surface of the photoreceptor during a warming-up process of the apparatus or after a predetermined number of image forming processes have been performed.
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Kawabata Itaru
Kinashi Hiroshi
Masuda Jitsuo
Morimoto Junji
Noguchi Teruhiko
Braun Fred L.
Sharp Kabushiki Kaisha
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