Electrophotography – Control of electrophotography process – Control of cleaning
Reexamination Certificate
2009-01-02
2010-11-23
Gray, David M (Department: 2852)
Electrophotography
Control of electrophotography process
Control of cleaning
C399S149000, C430S122400
Reexamination Certificate
active
07840152
ABSTRACT:
A transfer residual toner that has not been electrostatically transferred onto a transfer paper P at a transfer nip and remains on a surface of a photosensitive element is temporarily retained by an elastic blade of a toner retaining unit in a mechanical manner before reaching a latent image forming area. When passing through the latent image forming area, the transfer residual toner is returned onto the surface of the photosensitive member at such a timing that writing is not performed by an exposing unit on the surface of the photosensitive element.
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Ariizumi Osamu
Enoki Shigekazu
Hatakeyama Kumiko
Koichi Yasushi
Suzuki Koji
Gray David M
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Ricoh Company Limited
Yi Roy
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