Image forming apparatus having cleaner-less developer system
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United States of America Patent
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Dec 5, 2017
Issued Date -
N/A
app pub date -
Feb 23, 2016
filing date -
Feb 27, 2015
priority date (Note) -
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status (Latency Note)
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Abstract
An image forming apparatus includes an image bearing member on which a latent image is formed, a developer carrying member for developing the latent image, and an electroconductive regulating member for regulating a layer thickness of the developer in contact with the developer carrying member. A voltage source applies, to the electroconductive regulating member, a voltage of the same polarity as a polarity of the developer on a surface of the developer carrying member at least during a developing operation. The developer remaining on the surface of the image bearing member, after a developer image formed on the image bearing member is transferred, is collected by the developer carrying member. At a time when the developer carrying member is driven in a period other than during the developing operation, a potential difference between the electroconductive regulating member and the developer carrying member is made zero or a voltage which is different toward a side of a polarity opposite the polarity of the developer from a voltage applied to the developer carrying member is applied to the electroconductive regulating member.
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