Electrophotography – Having particular structure – Modular or displaceable
Patent
1994-10-25
1997-03-18
Dang, Thu A.
Electrophotography
Having particular structure
Modular or displaceable
399228, 399284, G03G 1501
Patent
active
056127693
ABSTRACT:
For image reproduction, a submodular unit including a developing roller and a doctor blade is adjustably mounted on a modular developing unit of a rotary developing apparatus. In general, the modular developing unit is rotatably positioned to juxtapose a photoreceptor drum. This juxtaposed position defines the developing position. The toner loaded on the developing roller in the developing position travels over a spacial gap between the developing roller surface and the photoreceptor drum surface. This crucial gap is necessary for successful image reproduction. However, this gap usually cannot be optimally maintained over extended time. The gap is also changed due vibration caused during shipment. In adjusting the gap, the submodular unit allows an independent and fine adjustment for each modular image developing unit. The submodular unit also allows an efficient assembly of the modular rotary developing unit.
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Kosuge Katsuhiro
Sugihara Kazuyuki
Dang Thu A.
Ricoh & Company, Ltd.
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