Electrophotography – Image formation – Development
Patent
1997-10-28
1999-09-28
Braun, Fred L.
Electrophotography
Image formation
Development
G03G 1506
Patent
active
059602392
ABSTRACT:
A developing device has a development roller for carrying toner on a surface thereof, a toner supply roller for supplying the toner to the development roller, a flat spring which comes into contact with the development roller, charges the toner to be supplied to the development roller and applies the toner to the development roller while regulating the thickness of a layer of the toner. The flat spring has a plurality of flat-plate parts including a contact flat-plate part which comes into contact with the development roller, and a curved part which connects the flat-plate parts to each other. In this structure, by arbitrarily selecting dimensional parameters of the flat spring, it is possible to easily obtain various flat springs having different properties. Therefore, for example, the stress to the toner and the stress to the members can be easily reduced simultaneously with a design of the flat spring. Moreover, it is possible to improve the uniformity of the toner layer thickness in the axis direction of the development roller and the uniformity of charging of the toner.
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Azuma Nobuyuki
Toyoshima Tetsuro
Yamanaka Takayuki
Braun Fred L.
Sharp Kabushiki Kaisha
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