Image forming apparatus

Abstract

In a configuration that includes a brush that comes into contact with a charged roller, image artifacts are suppressed. [Solution] The device comprises a rotatable image carrier, a rotatable charging roller that contacts the image carrier to form a charged portion and charges the surface of the image carrier with the charged portion, and a brush member that contacts the surface of the charging roller to form a brush portion, the brush member having bristles that contact the charging roller, wherein in the brush portion, the pressure per unit area that the brush member applies to the surface of the charging roller due to the contact of the bristles with the charging roller is defined as the contact pressure, and in the brush portion, the area of ​​the region in which the bristles of the brush member contact the charging roller per 1 mm in the direction in which the brush member extends is defined as the contact area, and the contact pressure is 1.5 mmgf / mm 2 The above is 4.6 mm gf / mm 2 The following applies, and the contact area is 0.05 mm². 2 1.10mm 2 The following applies:

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