Image forming apparatus

Details Image forming apparatus Image forming apparatus

2008-06-19

2009-11-03

Gray, David M (Department: 2852)

Electrophotography

Image formation

Development

C399S282000, C399S285000

Reexamination Certificate

active

07613417

ABSTRACT:
An image forming apparatus uses a two-component developer containing a toner and a carrier. The apparatus has a latent image bearer for bearing an electrostatic latent image. A toner bearer bears the toner to be conveyed to a development region to develop the electrostatic latent image. A developer bearer bears the two-component developer and supplies the toner to the toner bearer. A regulator sets the thickness of a toner layer carried on the toner bearer to 6 μm to 15 μm and sets a difference between a half width of a first toner charge number distribution as a number distribution of the charge amount of the toner carried on the toner bearer and that of a second toner charge number distribution as a number distribution of the charge amount of the toner in the two-component developer carried on the developer bearer to 0.8 (10−10C/m) or smaller.

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patent: 2003-280357 (2003-10-01), None
patent: 2005-242281 (2005-09-01), None

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