| 摘要 |
PROBLEM TO BE SOLVED: To provide an image forming device capable of obtaining a high definition image by preventing foreign matters such as carrier, etc., at 1st developing from mixing into a 2nd developing device. SOLUTION: An electromagnet 23 as a magnetic field generating member which is made movable in the rotary shaft direction of a developing roller 11 is installed in the hollow part of a toner control blade 20 which is arranged opposite to the developing roller 11 of a 2nd developing device with a prescribed distance left from the roller 11, then, foreign matters such as magnetic carrier, etc., at a 1st developing coming into the 2nd developing device and staying near the developing roller 11 are moved outside the developing roller 11 by a moving electromagnet 23 along the rotary shaft direction of the developing roller 11 so as to be removed, so that the foreign matters such as the carrier, etc., at the 1st developing is prevented from mixing into the 2nd developing device, and then, high definition image is obtained. |
