Developing apparatus with developer leak prevention

Details Developing apparatus with developer leak prevention Developing apparatus with developer leak prevention

1990-08-27

1991-12-24

Grimley, A. T.

Photocopying

Contact printing

Light boxes

118656, 355245, G03G 1506

Patent

active

050757288

ABSTRACT:
A developing apparatus includes a container having a first chamber and a second chamber, the second chamber containing a developer; a rotatable developer carrying member in the first chamber to carry the developer through a developing zone where an electrostatic latent image on an image bearing member is developed; a rotatable supply member disposed in the first chamber and cooperative with the developer carrying member to form a nip therebetween to supply the developer supplied from the second chamber to the developer carrying member; and a partition wall between the first chamber and a second chamber having an opening for permitting supply of the developer from the second chamber to the supply member, wherein the opening has a length smaller than a length of the supply member.

REFERENCES:
patent: 4528936 (1985-07-01), Shimazaki et al.
patent: 4596455 (1986-06-01), Kohyama et al.
patent: 4616918 (1986-10-01), Kohyama et al.
patent: 4632535 (1986-12-01), Nagata
patent: 4656965 (1989-04-01), Hosoya et al.
patent: 4809036 (1989-02-01), Yamashita et al.
patent: 4870463 (1989-09-01), Miyoshi et al.

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