Developer guide for preventing developer from entering gap betwe

Details Developer guide for preventing developer from entering gap betwe Developer guide for preventing developer from entering gap betwe

1989-12-14

1991-01-01

Grimley, Arthur T.

Photocopying

Contact printing

Light boxes

118658, 355253, G03G 1509

Patent

active

049822233

ABSTRACT:
A developing device for an image forming apparatus having a plurality of developing sleeves which are arranged one above the other in a predetermined relationship along the surface of an image carrier of the apparatus, and developing a latent image electrostatically formed on the image carrier by using a toner contained in a developer. While a paddle wheel scoops up the developer, a developer guide guides the scooped developer to the uppermost developing sleeve. The developer fed by the paddle wheel toward the lowermost developing sleeve is received by the guide member and driven therealong to the uppermost developing sleeve and not to the lowermost sleeve.

REFERENCES:
patent: 4041903 (1977-08-01), Katakura et al.
patent: 4235193 (1980-11-01), Groen et al.
patent: 4766458 (1988-08-01), Oka et al.
patent: 4912511 (1990-03-01), Murasaki

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