Electrophotography – Image formation – Development
Reexamination Certificate
2006-06-27
2006-06-27
Brase, Sandra L. (Department: 2852)
Electrophotography
Image formation
Development
C399S223000, C399S284000, C399S299000
Reexamination Certificate
active
07068967
ABSTRACT:
A developing apparatus including a developer container which contains a first developer having a first charging polarity and a second developer having a second charging polarity opposite to the first charging polarity, a developer bearing member which bears the first and the second developers, a layer forming device which forms a first layer substantially composed of the first developer on the developer bearing member and forms a second layer composed of the first and the second developers on the first layer, a separating member which is provided downstream of the layer forming device and upstream of a developing position in a developer bearing and conveying direction of the developer bearing member to separate the second layer from the developer bearing member, whereby plural kinds of developers can be selectively supplied for a development.
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Brase Sandra L.
Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
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