Image forming apparatus with charger of image carrier using magnetic brush.

摘要

An image forming machine has a charging roller (22) on which magnetic particles (21) are supplied to form a magnetic brush and an image forming body (10) which is charged under the condition that the magnetic brush on the charging roller (22) is in an alternating electric field. When the distance between a regulating member (26) that regulates an amount of the magnetic particles passing through it and the charging roller (22) is defined to be DB and the distance between the image forming body and the charging roller is defined to be DI, an inequality of 0.7 DB </= DI </= 1.0 DB is satisfied. More preferably, DB is in the relation of 0.2 </= DB </= 1.0 in mm. <IMAGE>