Image forming apparatus and developing device thereof

Details Image forming apparatus and developing device thereof Image forming apparatus and developing device thereof

1989-04-20

1989-12-12

Evans, Arthur G.

Recorders

Printing, dotting, or punching marker

Ink transfer support or moving means

3461531, G01D 1500

Patent

active

048871036

ABSTRACT:
An image forming apparatus which employs a recording method that uses electrically conductive developer, and a developing device for use in the image forming apparatus. A magnetic field is generated in an area having a width larger than that of a group of electrodes at the position of the electrode group so as to prevent the developer which has been passed over the electrodes from flowing outside of an image area at the downstream side of the group of electrodes.

REFERENCES:
patent: 3816840 (1974-06-01), Kotz
patent: 3879737 (1975-04-01), Lunde
patent: 3914771 (1975-10-01), Lunde
patent: 4268598 (1981-05-01), Leseman et al.
patent: 4573061 (1986-02-01), Fujii et al.
patent: 4635074 (1987-01-01), Young
patent: 4739348 (1988-04-01), Ando et al.
patent: 4755837 (1988-07-01), Schmidlin
patent: 4810604 (1989-03-01), Schmidlin

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