| 摘要 |
PURPOSE:To obtain a good electrostatic transfer, and also, to execute a transfer, especially, at the time of high humidity by using a conductive toner containing a (p) type or (n) type semiconductor, as an electric conductor of the toner. CONSTITUTION:A (p) type or (n) type semiconductor is used as an electric conductor 24 of a toner, and one of them is used in accordance with the polarity of a photoconductor layer 3. To a toner 7 being in contact with an image forming body 4, charge corresponding to the polarity of a bias voltage 13 is injected from a sleeve 9, and since the charge injection quantity is different in an exposed part and an unexposed part, a difference is generated in an electrostatic adhesion of the toner, to the surface of the photoconductor layer 3, and an image information is executed. Also, on the surface of the image forming body 4, a recording medium 17 is superposed, the reverse side is electrified to the polarity opposite to the charge which has been injected at the time of forming an image of the toner 7 by a corona transfer device 20, and by an electrostatic force generated between the toner and the charge of the reverse side of the recording medium 17, the toner 7 is transferred onto the recording medium 17 from on the photoconductor layer 3. In this way, even at the time of high humidity, a transfer to usual paper can be executed by an electrostatic transfer method. |
