Developing device and process cartridge with it

Details Developing device and process cartridge with it Developing device and process cartridge with it

1994-02-09

1996-12-17

Dang, Thu Anh

Photocopying

Contact printing

Light boxes

355245, 355260, G03G 1508

Patent

active

055858953

ABSTRACT:
An elastic regulating member for regulating thickness of a layer of developer conveyed to a developing station by a rotatable developing sleeve is abutted against the developing sleeve. At a toner return inlet of a container associated with the developing sleeve, a flexible sheet for preventing the developer in the container from leaking through the toner return inlet is abutted against the developing sleeve along a longitudinal direction thereof. Side seals are abutted against both longitudinal end portions of the developing sleeve to prevent the developer from leaking through such longitudinal end portions. Both longitudinal end portions of the flexible sheet are overlapped with sheet supporting surfaces formed on extensions of the side seals without any clearance. Further, the both longitudinal end portions of the flexible sheet are abutted against the developing sleeve at areas outwardly of both ends of the elastic regulating member.

REFERENCES:
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patent: 5016560 (1991-05-01), Asada et al.
patent: 5019861 (1991-05-01), Surti
patent: 5047805 (1991-09-01), Oka et al.
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patent: 5073797 (1991-12-01), Ono et al.
patent: 5084733 (1992-01-01), Katoh et al.
patent: 5134960 (1992-08-01), Shirai
patent: 5166472 (1992-11-01), Maeda et al.
patent: 5202729 (1993-04-01), Miyamoto et al.
patent: 5212521 (1993-05-01), Ogawa et al.
patent: 5274425 (1993-12-01), Fukimoto et al.
patent: 5338895 (1994-08-01), Ikegawa et al.

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