| 摘要 |
PROBLEM TO BE SOLVED: To provide an image forming device with durable constitution against an electric noise and capable of preventing a malfunction of the device due to the electric noise occurring on a connector section of a developing bias applying circuit. SOLUTION: This device is constituted by providing a developing bias power source 105 between a connector 108 of a developing bias applying circuit and a developing roller 41, namely, on a front side plate 201 of a developing device supporting material 200, connects a projecting shape terminal 108b of the connector 108 and the developing bias power source 105 with a harness 109a and connects this developing bias power source 105 and a bar shape terminal 106 as a developing bias input section to the developing roller 41 with a harness 109b. As the result, the electric noise occurring on the connector 108 is limitted to a DC component only being outputted from a main power source 104 and the device is prevented from the malfunction even if this electric noise is fetched in a controlling circuit (CPU) of a printer and becomes the durable constitution against the electric noise. |
