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Title:
IMAGE FORMING APPARATUS
Document Type and Number:
Japanese Patent JP2011113077
Kind Code:
A
Abstract:

To inexpensively provide an image forming apparatus which prevents faulty transfer on a leading edge side of transfer material while preventing occurrence of a leak black point, a transfer memory black point or fogging.

The image forming apparatus includes: a transfer bias power supply unit which applies transfer bias to a transfer roller so that a toner image may be transferred to the transfer material when the transfer material passes through a transfer nip; a discharger which is arranged on a downstream side of the transfer nip as seen in a moving direction of the transfer material; a destaticizing bias power supply unit which applies destaticizing bias having a reverse polarity to the transfer bias to the discharger; and a control unit which controls the transfer bias power supply unit and the discharger. The control unit allows the destaticizing bias power supply unit to start application of the destaticizing bias to the discharger before starting application of the transfer bias, and allows the transfer bias power supply unit to start application of the transfer bias so that transfer bias output may rise after the leading edge of the transfer material reaches the transfer nip.


Inventors:
Okamoto, Sueaki
Kawasaki, Kenichiro
Application Number:
JP2009000272532
Publication Date:
June 09, 2011
Filing Date:
November 30, 2009
Export Citation:
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Assignee:
KYOCERA MITA CORP
International Classes:
G03G15/16; G03G13/16; G03G21/14
Domestic Patent References:



 
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