Electrophotography – Cleaning of imaging surface
Patent
1997-02-05
2000-09-26
Chen, Sophia S.
Electrophotography
Cleaning of imaging surface
399169, 399350, 430125, G03G 2100
Patent
active
061252573
ABSTRACT:
The current methods and systems for cleaning residual ultra-fine spherical toner from an image forming surface discloses the application of aspherical toner to a cleaning blade. The aspherical toner is generally larger than the ultra-fine spherical toner which provides a superior image on an image-carrying medium. According to one preferred embodiment of the current invention, the aspherical black toner is placed in a predetermined area outside of a desired image area where the ultra-fine spherical toner in multiple colors is placed. The aspherical toner is transported to the cleaning blade before the multi-color toner reaches the cleaning blade. Since the aspherical toner applied at a contacting edge of the cleaning blade provide an effective seal or trap between the cleaning blade and the image forming surface, the ultra-fine spherical toner is effectively removed from the image forming surface.
REFERENCES:
patent: 5510886 (1996-04-01), Sugimoto et al.
patent: 5521691 (1996-05-01), Morimoto et al.
patent: 5648842 (1997-07-01), Sekine et al.
Fujimdri Kouta
Fushimi Hiroyuki
Kawaishi Yasunori
Ohsaki Makoto
Okamoto Jun
Chen Sophia S.
Ricoh Co. Ltd.
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