Electrophotography – Image formation – Development
Reexamination Certificate
2011-06-14
2011-06-14
Gray, David M (Department: 2852)
Electrophotography
Image formation
Development
C399S279000
Reexamination Certificate
active
07962076
ABSTRACT:
An image forming apparatus includes an image bearing member; a developer carrying member, contactable to the image bearing member, for carrying a developer to a developing position to develop an electrostatic image formed on the image bearing member with the developer; a supplying member for supplying the developer to the developer carrying member, wherein a peripheral speed of the developer carrying member is not less than 1.05 times and not more than 1.20 times a peripheral speed of the image bearing member, and an arithmetic average roughness Ra is not less than 0.20 times and not more than 0.33 times a volume average particle size of the developer, wherein a potential applied to the supplying member is different from a potential applied to the developer carrying member toward a larger potential of a regular charge polarity of the developer.
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Endo Rie
Moriya Shuji
Sakaizawa Katsuhiro
Takahashi Norio
Canon Kabushiki Kaisha
Curran Gregory H
Fitzpatrick ,Cella, Harper & Scinto
Gray David M
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