Image forming apparatus for forming toner image using...

Details Image forming apparatus for forming toner image using... Image forming apparatus for forming toner image using...

2007-10-18

2010-11-09

Brase, Sandra L (Department: 2884)

Electrophotography

Diagnostics

Consumable

C399S058000

Reexamination Certificate

active

07831159

ABSTRACT:
An apparatus is configured to charge an image bearing member in a charging section, develop an electrostatic image formed on the image bearing member, and transfer a toner image formed on the image bearing member to a transfer medium in a transfer section. The apparatus includes a charging auxiliary apparatus for changing a charge amount of toner on the image bearing member. The charging auxiliary apparatus includes a charging auxiliary member contacting with the image bearing member downstream of the transfer section and upstream of the charging section and a voltage applying device to apply a voltage to the charging auxiliary member. The apparatus includes a first detector to detect a current flowing in the charging auxiliary member during a period of non-image formation when the voltage is applied to the charging auxiliary member, a second detector to detect information regarding a toner density in the developing apparatus, and a control device to control toner supply to the developing apparatus based on detection results of both the detectors.

REFERENCES:
patent: 5461462 (1995-10-01), Nakane et al.
patent: 5581221 (1996-12-01), Kawai et al.
patent: 6744994 (2004-06-01), Yoshikawa et al.
patent: 9-281783 (1997-10-01), None
patent: 9-305009 (1997-11-01), None
patent: 2001-215798 (2001-08-01), None
patent: 2001-215799 (2001-08-01), None
patent: 2003-316202 (2003-11-01), None
patent: 2004-117960 (2004-04-01), None

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