Photocopying – Contact printing – Light boxes
Patent
1995-06-06
1997-11-11
Ramirez, Nestor R.
Photocopying
Contact printing
Light boxes
222DIG1, G03G 2110
Patent
active
056869851
ABSTRACT:
The invention is applicable to a developing device with a toner hopper as toner container, which can be mounted and dismounted and includes a toner replenishment roller controlled for rotation according to a detection signal of a toner concentration sensor. A shutter capable of being rotated along the outer periphery of the toner replenishment roller, is provided for opening and closing an opening at predetermined angular positions. At least one shutter opening end is in frictional contact with roller periphery, thus permitting stable mounting and dismounting of the toner container with respect to a developer container in a simple operation.
Further, in a toner container comprising a replenishment toner accommodating section and a waste toner recovery section formed at a longitudinal end of the accommodating section via a partitioning wall, the volume ratio between the replenishment toner accommodating section and the waste toner recovery section is set such that no overflow of waste toner occurs. A toner accommodation space is formed by an inclined wall extending substantially downward from a toner replenishment roller mounting portion of the replenishment toner accommodating section such that replenishment toner in it can be pulled up onto the toner replenishment roller mounting portion with the rotation of a toner agitating fin. It is thus possible to provide a suitable layout structure of toner container having an integral waste toner recovery section for accommodating waste toner after toner image formation.
REFERENCES:
patent: 4993829 (1991-02-01), Naganuma et al.
patent: 5243390 (1993-09-01), Takemoto et al.
patent: 5289241 (1994-02-01), Sugiyama et al.
patent: 5309211 (1994-05-01), Yoshioka
Kyocera Corporation
Ramirez Nestor R.
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