Image forming apparatus using hypochromatic toner and...

Details Image forming apparatus using hypochromatic toner and... Image forming apparatus using hypochromatic toner and...

2004-01-21

2008-03-11

Gray, David M. (Department: 2852)

Electrophotography

Control of electrophotography process

Of plural processes

C399S227000

Reexamination Certificate

active

07343112

ABSTRACT:
The image forming apparatus has an image forming portion capable of forming an image on a transferring medium by the use of a hypochromatic toner and a hyperchromatic toner of substantially the same color. The image forming portion is provided with a developing device for developing with the hypochromatic toner and the hyperchromatic toner, wherein, in an image area in which the hyperchromatic toner and the hypochromatic toner are mixedly present, the recording rate of the hyperchromatic toner is 1/16, the minimum size Wmini of a toner image of the hyperchromatic toner is 50 μm or less on the transferring medium. Thereby, it is achieved to reduce graininess.

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