Electrophotography – Diagnostics – Consumable
Reexamination Certificate
2005-07-06
2008-01-15
Lee, Susan (Department: 2852)
Electrophotography
Diagnostics
Consumable
C399S256000
Reexamination Certificate
active
07319828
ABSTRACT:
A development apparatus includes an auger conveyor member for stirring and conveying developer, the gravity of the developer being eccentrically distributed with respect to a center of rotation, a drive transfer member for driving and rotating the auger conveyor member, the drive transfer member being capable of being engaged and disengaged, and a rotation detector for detecting a rotational state of the auger conveyor member. The remaining amount of the developer is detected based on the rotational state detected by the rotation detector. Alternatively, a development apparatus includes the auger conveyor member and the drive transfer member, in which the eccentric gravity distribution is achieved by a rod-like weight member eccentrically provided with respect to a rotational axis, the auger conveyor member includes a first coil spring having an inner diameter larger than an outer diameter of the weight member, and the first coil spring is inserted around the weight member in a manner which allows the first coil spring to be rotated and limits an angle of rotation of the first coil spring to a predetermined angle. Alternatively, a development apparatus includes the auger conveyor member and the drive transfer member, in which the auger conveyor member is provided near a development supply roller, and a uniforming member for making the developer uniform is provided in a space portion between the development supply roller and the auger conveyor member.
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Hayashi Shigeki
Kido Eiichi
Nishino Toshio
Takesawa Yohichi
Lee Susan
Nixon & Vanderhye P.C.
Sharp Kabushiki Kaisha
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