Image forming method and apparatus

Details Image forming method and apparatus Image forming method and apparatus

2005-09-20

2005-09-20

Tran, Hoan (Department: 2852)

Electrophotography

Image formation

Development

C399S276000

Reexamination Certificate

active

06947692

ABSTRACT:
A method for developing an electrostatic latent image, including forming a magnet brush of a developer including a toner and a carrier on a developing sleeve including a main magnet and auxiliary magnets; and developing the electrostatic latent image with the magnet brush to form a toner image at a rubbing region, wherein the magnetic flux density in a normal line direction, half width, and attenuation ratio of the main magnet and the angle between the main magnet and auxiliary magnets are specified, and the magnetic sleeve has specific grooves thereon, and wherein the toner has a volume average particle diameter of from 4.0 to 7.0 μm, and includes fine particles having a circle equivalent diameter not greater than 2 μm in an amount not greater than 20% by number.

REFERENCES:
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patent: 2001-10336 (2000-01-01), None
patent: 2000-305360 (2000-11-01), None
patent: 2000-347506 (2000-12-01), None

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