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Charge roll, process cartridge, image forming apparatus, charging method, and cleaning method of charge roll

Image Number 4 for United States Patent #7917064.

A charge roll includes a roll member that contacts an image carrier and rotates, the roll member including a conductive material that charges the surface of the image carrier, and the roll member having particles on the outer circumferential surface of the roll member to have a surface roughness within a predetermined range.

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