Method and device for developing a latent image and image...

Details Method and device for developing a latent image and image... Method and device for developing a latent image and image...

2005-02-15

2005-02-15

Tran, Hoan (Department: 2852)

Electrophotography

Image formation

Development

C399S270000

Reexamination Certificate

active

06856780

ABSTRACT:
A developing method of the present invention uses a sleeve accommodating a stationary magnet roller formed with a plurality of magnetic poles and facing an image carrier. The sleeve is rotated to convey a developer, which is made up of toner grains and magnetic carrier grains and deposited on the sleeve, to a developing zone for thereby feeding the toner grains from a magnet brush formed by the developer to a latent image formed on the image carrier. When the developing zone is seen from the image carrier side, the ratio of the total area of voids present at the tips of the magnet brush to the total area of the developing zone is selected to be 25% or less.

REFERENCES:
patent: 4576463 (1986-03-01), Sakamoto et al.
patent: 4987853 (1991-01-01), Allen et al.
patent: 5173388 (1992-12-01), Uezono et al.

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