Submodular unit for use in a modular rotary developing apparatus

Details Submodular unit for use in a modular rotary developing apparatus Submodular unit for use in a modular rotary developing apparatus

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.

REFERENCES:
patent: 4772913 (1988-09-01), Watanabe
patent: 4772916 (1988-09-01), Mochida
patent: 4782360 (1988-11-01), Iwamoto et al.
patent: 4792825 (1988-12-01), Saito et al.
patent: 4894684 (1990-01-01), Nakajima et al.
patent: 4970561 (1990-11-01), Mizuno
patent: 5103764 (1992-04-01), Fujiwara et al.
patent: 5198866 (1993-03-01), Kimura et al.
patent: 5258819 (1993-11-01), Kimura et al.

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