Photocopying – Contact printing – Light boxes
Patent
1988-02-29
1990-01-16
Prescott, A. C.
Photocopying
Contact printing
Light boxes
355296, 355301, 355244, G03G 1508
Patent
active
048946885
ABSTRACT:
A device for use with an image forming apparatus having a photosensitive drum and a developing device and a cleaning device disposed around the photosensitive drum for conducting developer recovered in the cleaning device to the developing device includes a circulating passage provided between the developing device and the cleaning device so as to communicate the developing device with the cleaning device. A discharging device discharges developer recovered in the cleaning device to the circulating passage, and a conveyor is disposed in the circulating passage to convey developer in the circulating passage to the developing device, the conveyor and the circulating passage being constructed to provide a space between the conveyor and the circulating passage such that a portion of the developer is allowed to be temporarily retained in such space. A supply device is provided for supplying developer conveyed by the developer into the developing device.
REFERENCES:
patent: 3752576 (1973-08-01), Gerbasi
patent: 4395114 (1983-07-01), Ura et al.
patent: 4593997 (1986-06-01), Fox et al.
patent: 4627716 (1986-12-01), Oka
patent: 4659212 (1987-04-01), Ichihara et al.
patent: 4660960 (1987-04-01), Fukunaga et al.
patent: 4696565 (1987-09-01), Imanaka
patent: 4724459 (1988-02-01), Ford
patent: 4768055 (1988-08-01), Takamatsu et al.
Takamatsu Junichi
Taniguchi Masami
Mita Industrial Co. Ltd.
Prescott A. C.
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